CN104284361A - Interference measuring method, network side device and terminal side device - Google Patents
Interference measuring method, network side device and terminal side device Download PDFInfo
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- CN104284361A CN104284361A CN201310284615.7A CN201310284615A CN104284361A CN 104284361 A CN104284361 A CN 104284361A CN 201310284615 A CN201310284615 A CN 201310284615A CN 104284361 A CN104284361 A CN 104284361A
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- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
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- H—ELECTRICITY
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
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Abstract
The invention discloses an interference measuring method, a network side device and a terminal side device. The method includes the steps that a network side sends interference measuring indicating information to a target terminal and indicates the target terminal to conduct interference measuring, and the interference measuring indicating information is used for indicating parameter configuration information for interference measuring and/or used for indicating information of an interference source type. The network side device is used for sending the interference measuring indicating information to the target terminal and indicating the target terminal to conduct interference measuring, and the interference measuring indicating information is used for indicating the parameter configuration information for interference measuring and/or used for indicating the information of the interference source type. By the adoption of the interference measuring method, the network side device and the terminal side device, the interference measuring effect of a data channel/control channel can be improved.
Description
Technical Field
The present invention relates to wireless communication technologies, and in particular, to an interference measurement method, a network side device, and a terminal side device.
Background
Inter-cell interference is an inherent problem of cellular mobile communication systems, and the conventional solution is to avoid the interference problem between adjacent cells by using different carrier frequencies for the adjacent cells by using frequency reuse. In an Orthogonal Frequency Division Multiplexing (OFDM) system, the Frequency Multiplexing coefficient is 1, that is, the neighboring cells use the same carrier Frequency, which also complicates the inter-cell interference problem compared to the conventional Frequency Multiplexing system. Long Term Evolution (LTE), a system based on OFDM technology, mainly uses inter-cell interference randomization, interference avoidance and coordination techniques to solve the interference problem, and implements interference avoidance at the transmitting side through precoding, cooperative scheduling, and other manners at the network side. However, interference cooperation based on the sender greatly depends on the accuracy of the fed back Channel State Information (CSI). Due to the limitation of feedback signaling overhead and the influence of feedback processing delay, the interference problem cannot be solved well by the method of the LTE system based on the sender interference cooperation at present, and how to effectively eliminate and suppress the interference between cells and between users is an important direction for further and effectively improving the spectrum efficiency subsequently.
In the LTE system, Common Reference Signals (CRS) are used for pilot measurement and data demodulation, i.e. all users use CRS for channel estimation. When the CRS-based precoding processing method is adopted, the transmitting end needs to additionally notify the receiving end of the information of the specific precoding matrix (which may also be referred to as precoding weight) used during data transmission, and the overhead of the pilot frequency is high. In addition, in a Multi-user Multi-input Multi-output (MU-MIMO) system, since a plurality of terminals use the same CRS, orthogonality of pilots cannot be achieved, and thus interference cannot be estimated.
In an enhanced Long Term Evolution (LTE-a) system, in order to reduce pilot overhead and improve channel estimation accuracy, pilot measurement and data demodulation functions are separated, and two types of reference signals are defined respectively: demodulation Reference Signal (DMRS) and Channel State Information Reference Signal (CSI-RS). The CSI-RS is mainly used for channel measurement to obtain and feed back Channel Quality Information (CQI), so that the base station side can complete user scheduling and adaptive allocation of a Modulation and Coding Scheme (MCS) by using the Information, and precoding Information is not carried in CSI-RS transmission; the DMRS is mainly used for Channel estimation of a Physical Downlink Shared Channel (PDSCH) and an enhanced Physical Downlink Control Channel (ePDCCH) to complete demodulation of a data/Control Channel, and transmission of the DMRS carries precoding information of the PDSCH/ePDCCH. LTE and LTE-a systems can be divided into Frequency Division Duplex (FDD) and Time Division Duplex (TDD) systems according to the difference between uplink and downlink Duplex modes, and the CSI-RS and DMRS patterns of FDD and TDD systems are different.
The Resource Element (RE) is a minimum Resource unit for uplink and downlink transmission, and a position in the PRB may be represented by a two-dimensional coordinate (k, l), where k is a frequency domain subcarrier index and l is a time domain OFDM symbol index. For ePDCCH, two dedicated control channel resource units are defined: enhanced Resource Element Group (eREG) and enhanced Control Channel Element (eCCE). The number of PRBs according to the RE ranking 0 to 15 may be divided into 16 eregs, eregs numbered 0, 4, 8, 12 are classified as eREG group0, eregs numbered 1, 5, 9, 13 are classified as eREG group1, eregs numbered 2, 6, 10, 14 are classified as eREG group2, eregs numbered 3, 7, 11, 15 are classified as eREG group3, and an eCCE may consist of 4 eregs (i.e., each eREG group corresponds to 1 eCCE) or 8 eregs (8 eregs numbered even make up1 eCCE, 8 eregs numbered odd make up the other 1 eCCE), as shown in fig. 3.
In the advanced receiver research of the receiving end, the performance of the receiver depends on the accuracy of the interference measurement to a large extent, and the current LTE and LTE-a systems do not support the accurate interference measurement for data demodulation well. Although Interference Measurement Resources (IMR) are introduced in the LTE-a Rel-11 phase for measuring channel state information of an Interference signal, the signal is mainly used for CQI Measurement, the transmission period is relatively long, and Interference of each layer of data cannot be measured, so that the signal is not suitable for Interference cancellation and suppression during data channel/control channel demodulation, and how to improve the Interference Measurement effect of the data channel/control channel is a problem to be solved.
Disclosure of Invention
In view of the above, the present invention provides an interference measurement method, a network side device and a terminal side device, which can improve the interference measurement effect of a data channel/a control channel.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a method of interference measurement, the method comprising:
the method comprises the following steps that a network side sends interference measurement indication information to a target terminal to indicate the target terminal to carry out interference measurement, wherein the interference measurement indication information comprises at least one of the following information:
parameter configuration information for indicating interference measurements;
information indicating a type of interference source.
Wherein the parameter configuration information for indicating interference measurement includes at least one of the following information:
a common reference signal, CRS, port for interference measurement;
data and/or control channel resources for interference measurements;
information indicating a physical cell identity, ID, of the interfering cell and/or a virtual cell ID of the interfering user;
information indicating an interfering user equipment, UE, transmission mode;
information indicating the transmission signal power of the interfering cell.
Wherein the CRS ports for interference measurement comprise: at least one port of CRS port 0, CRS port 1, CRS port 2 and CRS port 3;
the method further comprises the following steps: and the network side sends a zero-power signal on a resource element RE corresponding to the CRS port of the bandwidth where the target terminal is located, and the target terminal carries out interference measurement through the signal received on the RE.
Wherein the CRS port for interference measurement is CRS port 2 and/or CRS port 3.
Wherein, the data and/or control channel resource for interference measurement is configured by the network side or is a predefined resource;
the method further comprises the following steps: and the network side sends a zero-power signal on the RE corresponding to the resource, and the target terminal carries out interference measurement through the signal received on the resource.
Wherein, the data and/or control channel resource for interference measurement has a resource number N in each resource block RB related to the scheduling type of the adjacent cell;
when the adjacent cell is scheduled by taking a sub-band as a unit, N < = M; when the adjacent cell is scheduled by taking RB as a unit, N > M, wherein M is an integer between 1 and 4, including 1 and 4.
Wherein the data and/or control channel resources for interference measurement comprise:
under the condition of a Normal cyclic prefix Normal CP of a frequency division duplex FDD system, other resources except for resources occupied by a demodulation reference signal DMRS and a channel state information reference signal CSI-RS, of a first and/or a second time domain symbol of a first and/or a second slot in each subframe include REs having coordinates (7, 5), (7, 6), (7, 12), (7, 13), (4, 5), (4, 6), (4, 12) and (4, 13);
or,
the resources, except for the resources occupied by the CRS, of the first and/or second time domain symbol of the second slot in each subframe include REs having coordinates (11, 7), (11, 8), (10, 7), (10, 8), (8, 7), (8, 8), (7, 7), (7, 8), (5, 7), (5, 8), (4, 7), (4, 8), (2, 7), (2, 8), (1, 7), and (1, 8);
or,
the other resources of the fifth time domain symbol of the first and/or second slot in each subframe, except for the resources occupied by the CRS, include REs having coordinates (11, 4), (11, 11), (10, 4), (10, 11), (8, 4), (8, 11), (7, 4), (7, 11), (5, 4), (5, 11), (4, 4), (4, 11), (2, 4), (2, 11), (1, 4), (1, 11).
Wherein the data and/or control channel resources for interference measurement comprise:
in the case of the Extended cyclic prefix Extended CP of the FDD system, the resources of the third time domain symbol of the second slot in each subframe include REs having coordinates (11, 8), (10, 8), (9, 8), (8, 8), (7, 8), (6, 8), (5, 8), (4, 8), (3, 8), (2, 8), (1, 8), and (0, 8);
or,
the other resources of the first and/or second time domain symbol of the second slot in each subframe except for the resource occupied by the CRS include REs having coordinates (11, 6), (11, 7), (10, 6), (10, 7), (8, 6), (8, 7), (7, 6), (7, 7), (5, 6), (5, 7), (4, 6), (4, 7), (2, 6), (2, 7), (1, 6) and (1, 7).
Wherein the data and/or control channel resources for interference measurement comprise:
under the condition of a conventional cyclic prefix of a time division duplex TDD system, other resources except for resources occupied by the DMRS, of the first time domain symbol and/or the second time domain symbol of the first time slot and/or the second time slot in each subframe comprise REs with the coordinates of (9, 5), (9, 6), (9, 12), (9, 13), (8, 5), (8, 6), (8, 12), (8, 13), (7, 5), (7, 6), (7, 12), (7, 13), (4, 5), (4, 6), (4, 12), (4, 13), (3, 5), (3, 6), (3, 12) and (3, 13);
or,
resources other than resources occupied by the CRS of the fifth time domain symbol of the first slot and/or the second slot in each subframe include REs having coordinates (11, 4), (11, 11), (10, 4), (10, 11), (8, 4), (8, 11), (7, 4), (7, 11), (5, 4), (5, 11), (4, 4), (4, 11), (2, 4), (2, 11), (1, 4), (1, 11);
or,
the resources of the third time domain symbol of the second slot in each subframe include REs having coordinates (11, 9), (10, 9), (9, 9), (8, 9), (7, 9), (6, 9), (5, 9), (4, 9), (3, 9), (2, 9), (1, 9), and (0, 9).
Wherein the data and/or control channel resources for interference measurement comprise:
under the condition that a TDD system extends a cyclic prefix, other resources except for resources occupied by the DMRS, of the last time domain symbol and/or the last time domain symbol of the first time slot and/or the second time slot in each subframe comprise REs with the coordinates of (9, 4), (9, 5), (6, 4), (6, 5), (3, 4), (3, 5), (0, 4) and (0, 5);
or,
the other resources of the first and/or second time domain symbol of the second slot in each subframe except for the resource occupied by the CRS include REs having coordinates (11, 6), (11, 9), (10, 6), (10, 9), (8, 6), (8, 9), (7, 6), (7, 9), (5, 6), (5, 9), (4, 6), (4, 9), (2, 6), (2, 9), (1, 6), and (1, 9).
Wherein the information for indicating the type of the interference source includes at least one of the following information:
interference from a physical downlink shared channel, PDSCH;
interference from an enhanced physical downlink control channel, ePDCCH;
interference from a physical downlink control channel, PDCCH;
interference from mixed channels.
Wherein the method further comprises: and the network side indicates the CRS port for interference measurement to a target terminal through high-level signaling/physical-layer dynamic signaling.
And the network side configures a plurality of sets of CRS ports for interference measurement for the target terminal through the high-level signaling, and indicates the target terminal to adopt one set of CRS ports for current interference measurement through the physical-layer dynamic signaling.
Wherein the method further comprises: and the network side indicates the data and/or control channel resources for interference measurement to the target terminal through high-layer signaling/physical layer dynamic signaling.
The network side configures a plurality of sets of data and/or control channel resources for interference measurement for the target terminal through the high-level signaling, and indicates the target terminal to adopt one set of data and/or control channel resources for current interference measurement through the physical layer dynamic signaling.
Wherein the method further comprises: and the network side transmits a zero-power signal on the CRS port for interference measurement or data and/or control channel resources for interference measurement, and performs data mapping by adopting a rate matching or puncturing mode.
The network side base station and the base station interact the scheduling type information through an X2 interface, and the scheduling type comprises: and performing resource scheduling by taking a sub-band as a unit, performing resource scheduling by taking an RB as a unit, and determining whether binding bundling exists in precoding operation.
A method of interference measurement, the method comprising:
the method comprises the steps that a target terminal receives interference measurement indication information sent by a network side, interference measurement is carried out according to the indication of the interference measurement indication information, and the interference measurement indication information comprises at least one of the following information:
parameter configuration information for indicating interference measurements;
information indicating a type of interference source.
A network-side device, the network-side device comprising:
an interference measurement indication unit, configured to indicate a target terminal to perform interference measurement according to interference measurement indication information, where the interference measurement indication information includes: parameter configuration information for indicating interference measurements, and/or information for indicating a type of interference source;
and the sending unit is used for sending the interference measurement indication information to a target terminal.
A terminal side device, which is a target terminal, includes:
a receiving unit, configured to receive interference measurement indication information, where the interference measurement indication information includes: parameter configuration information for indicating interference measurements, and/or information for indicating a type of interference source;
and the interference measurement unit is used for carrying out interference measurement according to the indication of the interference measurement indication information.
The method of the invention comprises the following steps: the method comprises the steps that a network side sends interference measurement indication information to a target terminal to indicate the target terminal to carry out interference measurement, wherein the interference measurement indication information comprises parameter configuration information used for indicating interference measurement and/or information used for indicating the type of an interference source.
By adopting the invention, because the network side sends the interference measurement indication information to the target terminal, and the information indicates the target terminal to carry out interference measurement, the interference measurement effect of the data channel/the control channel can be improved.
Drawings
Fig. 1 is a diagram illustrating a target terminal receiving interference from a neighboring cell according to the present invention;
fig. 2 is a schematic diagram of interference measurement using CRS port 2/3 according to the present invention;
fig. 3 is a resource diagram of a data and/or control channel for interference measurement in case of a conventional cyclic prefix in an FDD system according to the present invention;
fig. 4 is another resource diagram of data and/or control channels for interference measurement in case of conventional cyclic prefix in FDD system according to the present invention;
fig. 5 is another resource diagram of a data and/or control channel for interference measurement in case of a conventional cyclic prefix of an FDD system;
fig. 6 is a resource diagram of a data and/or control channel for interference measurement in case of an FDD system according to the present invention with an extended cyclic prefix;
fig. 7 is another resource diagram of a data and/or control channel for interference measurement in case of an FDD system according to the present invention with an extended cyclic prefix;
fig. 8 is a resource diagram of data and/or control channels for interference measurement in the case of a conventional cyclic prefix in a TDD system according to the present invention;
fig. 9 is another resource diagram of data and/or control channels for interference measurement in the case of conventional cyclic prefix in the TDD system according to the present invention;
fig. 10 is another resource diagram of data and/or control channels for interference measurement in the case of conventional cyclic prefix in the TDD system according to the present invention;
fig. 11 is a resource diagram of a data and/or control channel for interference measurement in case of a TDD system according to the present invention extending cyclic prefix;
fig. 12 is another resource diagram of a data and/or control channel for interference measurement in case of TDD system extended cyclic prefix according to the present invention.
Detailed Description
The following describes the embodiments in further detail with reference to the accompanying drawings.
The invention mainly comprises the following contents:
regarding to the network side, the interference measurement method of the invention comprises the following steps:
the method comprises the following steps that a network side sends interference measurement indication information to a target terminal to indicate the target terminal to carry out interference measurement, and the interference measurement indication information is used for indicating one or more of the following information to the target terminal:
(1) parameter configuration information for indicating interference measurements;
(2) information indicating a type of interference source.
Further, the parameter configuration information for indicating interference measurement includes one or more of the following information:
(1) a CRS port for interference measurement;
(2) data and/or control channel resources for interference measurements;
(3) information indicating a physical cell ID of an interfering cell and/or a virtual cell ID of an interfering user;
(4) information indicating an interfering User Equipment (UE) transmission mode;
(5) information indicating a transmission signal power of an interfering cell;
further, the CRS ports for interference measurement comprise: one or more of CRS port 0, CRS port 1, CRS port 2, and CRS port 3, the network side may send a zero power signal on an RE corresponding to the CRS port of the bandwidth where the target terminal is located, and the target terminal performs interference measurement through a signal received on the RE.
Further, the CRS ports for interference measurement are CRS port 2 and/or CRS port 3.
Further, the data and/or control channel resources for interference measurement are configured by the network side, or are predefined resources, the network side may send a zero-power signal on the RE corresponding to the resource, and the target terminal performs interference measurement through the signal received on the resource.
Further, the number of resources (denoted as N) of the data and/or control channel resources for interference measurement in each Resource Block (RB) is related to the scheduling type of the neighboring cell. When the adjacent cell is scheduled by taking a sub-band as a unit, N < = M; when the adjacent cell is scheduled by taking RB as a unit, N > M, wherein M is an integer between 1 and 4, including 1 and 4.
Further, the data and/or control channel resources for interference measurement comprise:
(1) in case of a Normal cyclic prefix (Normal CP) of the FDD system, other resources, except for the resources occupied by the DMRS and CSI-RS, of the first last and/or second last time domain symbol of the first and/or second slot in each subframe include REs having coordinates (7, 5), (7, 6), (7, 12), (7, 13), (4, 5), (4, 6), (4, 12), (4, 13);
or, the other resources of the first and/or second time domain symbol of the second slot in each subframe, except for the resource occupied by the CRS, include REs having coordinates (11, 7), (11, 8), (10, 7), (10, 8), (8, 7), (8, 8), (7, 7), (7, 8), (5, 7), (5, 8), (4, 7), (4, 8), (2, 7), (2, 8), (1, 7), and (1, 8);
or, the other resources, except for the resources occupied by the CRS, of the fifth time domain symbol of the first and/or second slot in each subframe include REs having coordinates (11, 4), (11, 11), (10, 4), (10, 11), (8, 4), (8, 11), (7, 4), (7, 11), (5, 4), (5, 11), (4, 4), (4, 11), (2, 4), (2, 11), (1, 4), (1, 11);
(2) in the case of an Extended CP (Extended CP) in the FDD system, the resources of the third time domain symbol of the second slot in each subframe include REs with coordinates (11, 8), (10, 8), (9, 8), (8, 8), (7, 8), (6, 8), (5, 8), (4, 8), (3, 8), (2, 8), (1, 8), and (0, 8);
or other resources, except for resources occupied by the CRS, of the first and/or second time domain symbol of the second slot in each subframe, including REs having coordinates (11, 6), (11, 7), (10, 6), (10, 7), (8, 6), (8, 7), (7, 6), (7, 7), (5, 6), (5, 7), (4, 6), (4, 7), (2, 6), (2, 7), (1, 6), and (1, 7);
(3) in the case of a conventional cyclic prefix of a TDD system, the other resources, except for the resources occupied by the DMRS, of the first and/or second last time domain symbol of the first and/or second slot in each subframe include REs having coordinates (9, 5), (9, 6), (9, 12), (9, 13), (8, 5), (8, 6), (8, 12), (8, 13), (7, 5), (7, 6), (7, 12), (7, 13), (4, 5), (4, 6), (4, 12), (4, 13), (3, 5), (3, 6), (3, 12), and (3, 13);
or, the other resources, except for the resources occupied by the CRS, of the fifth time domain symbol of the first slot and/or the second slot in each subframe include REs having coordinates (11, 4), (11, 11), (10, 4), (10, 11), (8, 4), (8, 11), (7, 4), (7, 11), (5, 4), (5, 11), (4, 4), (4, 11), (2, 4), (2, 11), (1, 4), (1, 11);
or, the resource of the third time domain symbol of the second slot in each subframe includes REs with coordinates (11, 9), (10, 9), (9, 9), (8, 9), (7, 9), (6, 9), (5, 9), (4, 9), (3, 9), (2, 9), (1, 9), and (0, 9);
(4) under the condition that a TDD system extends a cyclic prefix, other resources except for resources occupied by the DMRS, of the last time domain symbol and/or the last time domain symbol of the first time slot and/or the second time slot in each subframe comprise REs with the coordinates of (9, 4), (9, 5), (6, 4), (6, 5), (3, 4), (3, 5), (0, 4) and (0, 5);
or, the other resources of the first and/or second time domain symbol of the second slot in each subframe, except for the resource occupied by the CRS, include REs having coordinates (11, 6), (11, 9), (10, 6), (10, 9), (8, 6), (8, 9), (7, 6), (7, 9), (5, 6), (5, 9), (4, 6), (4, 9), (2, 6), (2, 9), (1, 6), and (1, 9);
further, the information for indicating the type of the interference source includes one or more of the following combinations:
(1) interference from a PDSCH;
(2) interference from ePDCCH;
(3) interference from the PDCCH;
(4) interference from mixed channels.
Further, the network side indicates the CRS port for interference measurement to the target terminal through a high layer signaling/physical layer dynamic signaling.
Furthermore, the network side configures a plurality of sets of CRS ports for interference measurement for the target terminal through high-level signaling, and indicates to the target terminal through physical-layer dynamic signaling that one set of CRS ports is adopted for current interference measurement;
further, the network side indicates the data and/or control channel resources for interference measurement to the target terminal through high layer signaling/physical layer dynamic signaling.
Further, the network side determines the resource index for interference measurement by the following formula 1 or formula 2:
equation 1: resource index (physical cell ID/virtual cell ID) mod (total number of resources) +1
Equation 2: resource index (physical cell ID/virtual cell ID) mod (total resource number)
Furthermore, the network side configures a plurality of sets of data and/or control channel resources for interference measurement for the target terminal through high-level signaling, and indicates the target terminal to adopt one set of data and/or control channel resources for current interference measurement through physical-layer dynamic signaling.
Further, the network side indicates the type of the interference to the target terminal through a high layer signaling/physical layer dynamic signaling.
Further, the network side transmits a zero-power signal on the CRS port for interference measurement or on data and/or control channel resources, and performs data mapping in a rate matching or puncturing manner.
Further, the network side base station and the base station exchange scheduling type information through an X2 interface, and the scheduling type includes: and performing resource scheduling by taking a sub-band as a unit, performing resource scheduling by taking an RB as a unit, and determining whether the precoding operation has bundling or not.
In terms of a terminal side, an interference measurement method of the present invention includes:
the method comprises the steps that a target terminal receives interference measurement indication information sent by a network side, interference measurement is carried out according to the indication of the interference measurement indication information, and the interference measurement indication information is used for indicating one or more of the following information:
(1) parameter configuration information for indicating interference measurements;
(2) information indicating a type of interference source.
Further, the parameter configuration information for indicating interference measurement includes one or more of the following information:
(1) a CRS port for interference measurement;
(2) data and/or control channel resources for interference measurements;
(3) information indicating a physical cell ID of an interfering cell and/or a virtual cell ID of an interfering user;
(4) information indicating an interfering UE transmission mode;
(5) information indicating a transmission signal power of an interfering cell;
further, the CRS ports for interference measurement comprise: one or more of CRS port 0, CRS port 1, CRS port 2, and CRS port 3, the network side may send a zero power signal on an RE corresponding to the CRS port of the bandwidth where the target terminal is located, and the target terminal performs interference measurement through a signal received on the RE.
Further, the CRS ports for interference measurement are CRS port 2 and/or CRS port 3.
Further, the data and/or control channel resources for interference measurement are configured by the network side, or are predefined resources, the network side may send a zero-power signal on the RE corresponding to the resource, and perform interference measurement through the signal received on the resource.
Further, the number of resources (denoted as N) of the data and/or control channel resources for interference measurement in each RB is related to the scheduling type of the neighboring cell. When the adjacent cell is scheduled by taking a sub-band as a unit, N < = M; when the adjacent cell is scheduled by taking RB as a unit, N > M, wherein M is an integer between 1 and 4, including 1 and 4.
Further, the data and/or control channel resources for interference measurement comprise:
(1) in case of a Normal cyclic prefix (Normal CP) of the FDD system, other resources, except for the resources occupied by the DMRS and CSI-RS, of the first last and/or second last time domain symbol of the first and/or second slot in each subframe include REs having coordinates (7, 5), (7, 6), (7, 12), (7, 13), (4, 5), (4, 6), (4, 12), (4, 13);
or, the other resources of the first and/or second time domain symbol of the second slot in each subframe, except for the resource occupied by the CRS, include REs having coordinates (11, 7), (11, 8), (10, 7), (10, 8), (8, 7), (8, 8), (7, 7), (7, 8), (5, 7), (5, 8), (4, 7), (4, 8), (2, 7), (2, 8), (1, 7), and (1, 8);
or, the other resources, except for the resources occupied by the CRS, of the fifth time domain symbol of the first and/or second slot in each subframe include REs having coordinates (11, 4), (11, 11), (10, 4), (10, 11), (8, 4), (8, 11), (7, 4), (7, 11), (5, 4), (5, 11), (4, 4), (4, 11), (2, 4), (2, 11), (1, 4), (1, 11);
(2) in the case of an Extended CP (Extended CP) in the FDD system, the resources of the third time domain symbol of the second slot in each subframe include REs with coordinates (11, 8), (10, 8), (9, 8), (8, 8), (7, 8), (6, 8), (5, 8), (4, 8), (3, 8), (2, 8), (1, 8), and (0, 8);
or other resources, except for resources occupied by the CRS, of the first and/or second time domain symbol of the second slot in each subframe, including REs having coordinates (11, 6), (11, 7), (10, 6), (10, 7), (8, 6), (8, 7), (7, 6), (7, 7), (5, 6), (5, 7), (4, 6), (4, 7), (2, 6), (2, 7), (1, 6), and (1, 7);
(3) in the case of a conventional cyclic prefix of a TDD system, the other resources, except for the resources occupied by the DMRS, of the first and/or second last time domain symbol of the first and/or second slot in each subframe include REs having coordinates (9, 5), (9, 6), (9, 12), (9, 13), (8, 5), (8, 6), (8, 12), (8, 13), (7, 5), (7, 6), (7, 12), (7, 13), (4, 5), (4, 6), (4, 12), (4, 13), (3, 5), (3, 6), (3, 12), and (3, 13);
or, the other resources, except for the resources occupied by the CRS, of the fifth time domain symbol of the first slot and/or the second slot in each subframe include REs having coordinates (11, 4), (11, 11), (10, 4), (10, 11), (8, 4), (8, 11), (7, 4), (7, 11), (5, 4), (5, 11), (4, 4), (4, 11), (2, 4), (2, 11), (1, 4), (1, 11);
or, the resource of the third time domain symbol of the second slot in each subframe includes REs with coordinates (11, 9), (10, 9), (9, 9), (8, 9), (7, 9), (6, 9), (5, 9), (4, 9), (3, 9), (2, 9), (1, 9), and (0, 9);
(4) under the condition that a TDD system extends a cyclic prefix, other resources except for resources occupied by the DMRS, of the last time domain symbol and/or the last time domain symbol of the first time slot and/or the second time slot in each subframe comprise REs with the coordinates of (9, 4), (9, 5), (6, 4), (6, 5), (3, 4), (3, 5), (0, 4) and (0, 5);
or, the other resources of the first and/or second time domain symbol of the second slot in each subframe, except for the resource occupied by the CRS, include REs having coordinates (11, 6), (11, 9), (10, 6), (10, 9), (8, 6), (8, 9), (7, 6), (7, 9), (5, 6), (5, 9), (4, 6), (4, 9), (2, 6), (2, 9), (1, 6), and (1, 9);
further, the information for indicating the type of the interference source includes one or more of the following combinations:
(1) interference from a PDSCH;
(2) interference from ePDCCH;
(3) interference from the PDCCH;
(4) interference from mixed channels.
Further, the target terminal receives CRS port information sent by the network side through high-level signaling/physical layer dynamic signaling, and determines the CRS port for interference measurement.
Furthermore, the target terminal receives multiple sets of CRS ports configured for the target terminal by the network side through a high-level signaling, and determines to adopt one set of CRS ports for current interference measurement through the received physical layer dynamic signaling.
Further, the target terminal receives the data and/or control channel resource for interference measurement sent by the network side through high-layer signaling/physical layer dynamic signaling, and determines the data and/or control channel resource for interference measurement.
Further, the target terminal determines the resource index for interference measurement by equation 1 or equation 2 as follows:
equation 1: resource index (physical cell ID/virtual cell ID) mod (total number of resources) +1
Equation 2: resource index (physical cell ID/virtual cell ID) mod (total resource number)
Furthermore, the target terminal receives multiple sets of data and/or control channel resources configured for the target terminal by the network side through a high-level signaling, and determines to adopt one set of data and/or control channel resources for current interference measurement through the received physical-layer dynamic signaling.
Further, the target terminal receives the type of the interference sent by the network side through the high-layer signaling/physical layer dynamic signaling, and determines the type of the interference.
Further, the target terminal defaults to a network side and transmits a zero-power signal on the CRS port or data and/or control channel resource for interference measurement, and extracts data according to a rate matching or puncturing rule of data mapping.
As for the network side, the network side device of the present invention is configured to send interference measurement indication information to a target terminal, and instruct the target terminal to perform interference measurement, where the interference measurement indication information is used to instruct the target terminal to indicate one or more of the following information:
(1) parameter configuration information for indicating interference measurements;
(2) information indicating a type of interference source.
Further, the parameter configuration information for indicating interference measurement includes one or more of the following information:
(1) a CRS port for interference measurement;
(2) data and/or control channel resources for interference measurements;
(3) information indicating a physical cell ID of an interfering cell and/or a virtual cell ID of an interfering user;
(4) information indicating an interfering User Equipment (UE) transmission mode;
(5) information indicating a transmission signal power of an interfering cell;
further, the CRS ports for interference measurement comprise: the method comprises the steps that one or more of a CRS port 0, a CRS port 1, a CRS port 2 and a CRS port 3 are adopted, network side equipment can send zero-power signals on REs corresponding to the CRS ports of the bandwidth where a target terminal is located, and the target terminal carries out interference measurement through signals received on the REs.
Further, the CRS ports for interference measurement are CRS port 2 and/or CRS port 3.
Further, the data and/or control channel resource for interference measurement is configured by a network side device, or is a predefined resource, the network side device may send a zero-power signal on an RE corresponding to the resource, and the target terminal performs interference measurement through a signal received on the resource.
Further, the number of resources (denoted as N) of the data and/or control channel resources for interference measurement in each Resource Block (RB) is related to the scheduling type of the neighboring cell. When the adjacent cell is scheduled by taking a sub-band as a unit, N < = M; when the adjacent cell is scheduled by taking RB as a unit, N > M, wherein M is an integer between 1 and 4, including 1 and 4.
Further, the data and/or control channel resources for interference measurement comprise:
(1) in case of a Normal cyclic prefix (Normal CP) of the FDD system, other resources, except for the resources occupied by the DMRS and CSI-RS, of the first last and/or second last time domain symbol of the first and/or second slot in each subframe include REs having coordinates (7, 5), (7, 6), (7, 12), (7, 13), (4, 5), (4, 6), (4, 12), (4, 13);
or, the other resources of the first and/or second time domain symbol of the second slot in each subframe, except for the resource occupied by the CRS, include REs having coordinates (11, 7), (11, 8), (10, 7), (10, 8), (8, 7), (8, 8), (7, 7), (7, 8), (5, 7), (5, 8), (4, 7), (4, 8), (2, 7), (2, 8), (1, 7), and (1, 8);
or, the other resources of the fifth time domain symbol of the first and/or second slot in each subframe, except for the resources occupied by the CRS, include the resources with coordinates (11, 4), (11, 11), (10, 4), (10,
11）、（8，4）、（8，11）、（7，4）、（7，11）、（5，4）、（5，11）、（4，4）、（4，
11) RE of (2, 4), (2, 11), (1, 4), and (1, 11);
(2) in the case of an Extended CP (Extended CP) in the FDD system, the resources of the third time domain symbol of the second slot in each subframe include REs with coordinates (11, 8), (10, 8), (9, 8), (8, 8), (7, 8), (6, 8), (5, 8), (4, 8), (3, 8), (2, 8), (1, 8), and (0, 8);
or other resources, except for resources occupied by the CRS, of the first and/or second time domain symbol of the second slot in each subframe, including REs having coordinates (11, 6), (11, 7), (10, 6), (10, 7), (8, 6), (8, 7), (7, 6), (7, 7), (5, 6), (5, 7), (4, 6), (4, 7), (2, 6), (2, 7), (1, 6), and (1, 7);
(3) in the case of a conventional cyclic prefix of a TDD system, the other resources, except for the resources occupied by the DMRS, of the first and/or second last time domain symbol of the first and/or second slot in each subframe include REs having coordinates (9, 5), (9, 6), (9, 12), (9, 13), (8, 5), (8, 6), (8, 12), (8, 13), (7, 5), (7, 6), (7, 12), (7, 13), (4, 5), (4, 6), (4, 12), (4, 13), (3, 5), (3, 6), (3, 12), and (3, 13);
or, the other resources, except for the resources occupied by the CRS, of the fifth time domain symbol of the first slot and/or the second slot in each subframe include REs having coordinates (11, 4), (11, 11), (10, 4), (10, 11), (8, 4), (8, 11), (7, 4), (7, 11), (5, 4), (5, 11), (4, 4), (4, 11), (2, 4), (2, 11), (1, 4), (1, 11);
or, the resource of the third time domain symbol of the second slot in each subframe includes REs with coordinates (11, 9), (10, 9), (9, 9), (8, 9), (7, 9), (6, 9), (5, 9), (4, 9), (3, 9), (2, 9), (1, 9), and (0, 9);
(4) under the condition that a TDD system extends a cyclic prefix, other resources except for resources occupied by the DMRS, of the last time domain symbol and/or the last time domain symbol of the first time slot and/or the second time slot in each subframe comprise REs with the coordinates of (9, 4), (9, 5), (6, 4), (6, 5), (3, 4), (3, 5), (0, 4) and (0, 5);
or, the other resources of the first and/or second time domain symbol of the second slot in each subframe, except for the resource occupied by the CRS, include REs having coordinates (11, 6), (11, 9), (10, 6), (10, 9), (8, 6), (8, 9), (7, 6), (7, 9), (5, 6), (5, 9), (4, 6), (4, 9), (2, 6), (2, 9), (1, 6), and (1, 9);
further, the information for indicating the type of the interference source includes one or more of the following combinations:
(1) interference from a PDSCH;
(2) interference from ePDCCH;
(3) interference from the PDCCH;
(4) interference from mixed channels.
Further, the network side device indicates the CRS port for interference measurement to the target terminal through a high layer signaling/physical layer dynamic signaling.
Furthermore, the network side equipment configures a plurality of sets of CRS ports for interference measurement for the target terminal through high-level signaling, and indicates to the target terminal to adopt one set of CRS ports for current interference measurement through physical-layer dynamic signaling;
further, the network side device indicates the data and/or control channel resources for interference measurement to the target terminal through high layer signaling/physical layer dynamic signaling.
Further, the network side device determines the resource index for interference measurement by the following formula 1 or formula 2:
equation 1: resource index (physical cell ID/virtual cell ID) mod (total number of resources) +1
Equation 2: resource index (physical cell ID/virtual cell ID) mod (total resource number)
Furthermore, the network side device configures a plurality of sets of data and/or control channel resources for interference measurement for the target terminal through high-level signaling, and indicates the target terminal to adopt one set of data and/or control channel resources for current interference measurement through physical layer dynamic signaling.
Further, the network side device indicates the type of the interference to the target terminal through a high layer signaling/physical layer dynamic signaling.
Further, the network side device sends a zero power signal on the CRS port for interference measurement or on data and/or control channel resources, and performs data mapping in a rate matching or puncturing manner.
Further, the base station at the network side interacts scheduling type information with the base station through an X2 interface, and the scheduling type includes: and performing resource scheduling by taking a sub-band as a unit, performing resource scheduling by taking an RB as a unit, and determining whether the precoding operation has bundling or not.
In terms of a terminal side, a terminal side device of the present invention is a target terminal, and is configured to receive interference measurement indication information sent by a network side device, and perform interference measurement according to an indication of the interference measurement indication information, where the interference measurement indication information is used to indicate one or more of the following information:
(1) parameter configuration information for indicating interference measurements;
(2) information indicating a type of interference source.
Further, the parameter configuration information for indicating interference measurement includes one or more of the following information:
(1) a CRS port for interference measurement;
(2) data and/or control channel resources for interference measurements;
(3) information indicating a physical cell ID of an interfering cell and/or a virtual cell ID of an interfering user;
(4) information indicating an interfering UE transmission mode;
(5) information indicating a transmission signal power of an interfering cell;
further, the CRS ports for interference measurement comprise: the method comprises the steps that one or more of a CRS port 0, a CRS port 1, a CRS port 2 and a CRS port 3 are adopted, network side equipment can send zero-power signals on REs corresponding to the CRS ports of the bandwidth where a target terminal is located, and the target terminal carries out interference measurement through signals received on the REs.
Further, the CRS ports for interference measurement are CRS port 2 and/or CRS port 3.
Further, the data and/or control channel resources for interference measurement are configured by the network side device, or are predefined resources, the network side device may send a zero-power signal on an RE corresponding to the resource, and perform interference measurement through a signal received on the resource.
Further, the number of resources (denoted as N) of the data and/or control channel resources for interference measurement in each RB is related to the scheduling type of the neighboring cell. When the adjacent cell is scheduled by taking a sub-band as a unit, N < = M; when the adjacent cell is scheduled by taking RB as a unit, N > M, wherein M is an integer between 1 and 4, including 1 and 4.
Further, the data and/or control channel resources for interference measurement comprise:
(1) in case of a Normal cyclic prefix (Normal CP) of the FDD system, other resources, except for the resources occupied by the DMRS and CSI-RS, of the first last and/or second last time domain symbol of the first and/or second slot in each subframe include REs having coordinates (7, 5), (7, 6), (7, 12), (7, 13), (4, 5), (4, 6), (4, 12), (4, 13);
or, the other resources of the first and/or second time domain symbol of the second slot in each subframe, except for the resource occupied by the CRS, include REs having coordinates (11, 7), (11, 8), (10, 7), (10, 8), (8, 7), (8, 8), (7, 7), (7, 8), (5, 7), (5, 8), (4, 7), (4, 8), (2, 7), (2, 8), (1, 7), and (1, 8);
or, the other resources, except for the resources occupied by the CRS, of the fifth time domain symbol of the first and/or second slot in each subframe include REs having coordinates (11, 4), (11, 11), (10, 4), (10, 11), (8, 4), (8, 11), (7, 4), (7, 11), (5, 4), (5, 11), (4, 4), (4, 11), (2, 4), (2, 11), (1, 4), (1, 11);
(2) in the case of an Extended CP (Extended CP) in the FDD system, the resources of the third time domain symbol of the second slot in each subframe include REs with coordinates (11, 8), (10, 8), (9, 8), (8, 8), (7, 8), (6, 8), (5, 8), (4, 8), (3, 8), (2, 8), (1, 8), and (0, 8);
or other resources, except for resources occupied by the CRS, of the first and/or second time domain symbol of the second slot in each subframe, including REs having coordinates (11, 6), (11, 7), (10, 6), (10, 7), (8, 6), (8, 7), (7, 6), (7, 7), (5, 6), (5, 7), (4, 6), (4, 7), (2, 6), (2, 7), (1, 6), and (1, 7);
(3) in the case of a conventional cyclic prefix of a TDD system, the other resources, except for the resources occupied by the DMRS, of the first and/or second last time domain symbol of the first and/or second slot in each subframe include REs having coordinates (9, 5), (9, 6), (9, 12), (9, 13), (8, 5), (8, 6), (8, 12), (8, 13), (7, 5), (7, 6), (7, 12), (7, 13), (4, 5), (4, 6), (4, 12), (4, 13), (3, 5), (3, 6), (3, 12), and (3, 13);
or, the other resources, except for the resources occupied by the CRS, of the fifth time domain symbol of the first slot and/or the second slot in each subframe include REs having coordinates (11, 4), (11, 11), (10, 4), (10, 11), (8, 4), (8, 11), (7, 4), (7, 11), (5, 4), (5, 11), (4, 4), (4, 11), (2, 4), (2, 11), (1, 4), (1, 11);
or, the resource of the third time domain symbol of the second slot in each subframe includes REs with coordinates (11, 9), (10, 9), (9, 9), (8, 9), (7, 9), (6, 9), (5, 9), (4, 9), (3, 9), (2, 9), (1, 9), and (0, 9);
(4) under the condition that a TDD system extends a cyclic prefix, other resources except for resources occupied by the DMRS, of the last time domain symbol and/or the last time domain symbol of the first time slot and/or the second time slot in each subframe comprise REs with the coordinates of (9, 4), (9, 5), (6, 4), (6, 5), (3, 4), (3, 5), (0, 4) and (0, 5);
or, the other resources of the first and/or second time domain symbol of the second slot in each subframe, except for the resource occupied by the CRS, include REs having coordinates (11, 6), (11, 9), (10, 6), (10, 9), (8, 6), (8, 9), (7, 6), (7, 9), (5, 6), (5, 9), (4, 6), (4, 9), (2, 6), (2, 9), (1, 6), and (1, 9);
further, the information for indicating the type of the interference source includes one or more of the following combinations:
(1) interference from a PDSCH;
(2) interference from ePDCCH;
(3) interference from the PDCCH;
(4) interference from mixed channels.
Further, the target terminal receives CRS port information sent by the network side device through a high layer signaling/physical layer dynamic signaling, and determines the CRS port for interference measurement.
Further, the target terminal receives multiple sets of CRS ports configured for the target terminal by the network side device through the high-level signaling, and determines to use one set of CRS ports for the current interference measurement through the received physical layer dynamic signaling.
Further, the target terminal receives the data and/or control channel resource for interference measurement sent by the network side device through high-layer signaling/physical layer dynamic signaling, and determines the data and/or control channel resource for interference measurement.
Further, the target terminal determines the resource index for interference measurement by equation 1 or equation 2 as follows:
equation 1: resource index (physical cell ID/virtual cell ID) mod (total number of resources) +1
Equation 2: resource index (physical cell ID/virtual cell ID) mod (total resource number)
Further, the target terminal receives multiple sets of data and/or control channel resources configured for the target terminal by the network side device through a high-level signaling, and determines to adopt one set of data and/or control channel resources for current interference measurement through the received physical layer dynamic signaling.
Further, the target terminal receives the type of the interference sent by the network side equipment through the high-level signaling/physical layer dynamic signaling, and determines the type of the interference.
Further, the target terminal defaults to a network side device that transmits a zero-power signal on the CRS port for interference measurement or on data and/or control channel resources, and extracts data according to a rate matching or puncturing rule of data mapping.
In summary, the present invention improves the interference measurement effect on the data channel and the control channel through the assistance of the network signaling, so as to improve the interference cancellation/interference suppression effect of the receiver, and finally improve the spectrum efficiency of the network.
The invention is illustrated below.
In LTE/LTE-A system, the receiver receives the signal (N) on the kth subcarrier and the l OFDM symbolRxX 1 dimension, wherein NRxRepresenting the number of receive antennas) may represent the signal itselfInterference signalAnd noise n (k, l):
wherein d isj(k, l) andrespectively representing r x 1 dimension transmission signal vector sum N between the jth cell and the target terminalTxX r dimension equivalent channel matrix, where NTxIndicates the number of transmit antennas and r indicates the number of transmit layers.Wherein Hj(k, l) is NRx×NTxDimensional channel matrix, Pj(k, l) is NTxA xr-dimensional precoding matrix. Estimated signal of UE endIs of dimension r × 1, can pass through r × NRxDimension receiving weight WRX,1(k, l) gives:
for an advanced receiver MMSE-IRC receiver, the receive weights are:
wherein,is an equivalent channel matrix of the estimated interference signal.
Alternatively, where an equivalent channel matrix for the interfering signal cannot be estimated, the covariance matrix R may be estimated based on the received interference plus noise signal power,
where IMR _ NAIC is a resource for interference measurement, NspThe number of samples used for interference measurement resources.
The related documents/techniques have demonstrated that the demodulation performance is greatly improved by using the MMSE-IRC receiver compared to the conventional MRC or MMSE, because the MMSE-IRC receiver can obtain more accurate receiving weights by using the interference channel covariance matrix or the received signal power of the interference plus noise. Therefore, it is an effective way to further improve the reception performance in the case of MMSE-IRC or higher order receivers to know more accurate interference measurement information.
Example one
The embodiment provides an interference measurement method, wherein a network side sends interference measurement indication information through a high-level signaling and/or a physical-layer dynamic signaling, and the interference measurement indication information indicates a target terminal to measure interference information at a CRS port. And the CRS port for measuring the interference is configured at the network side or predefined.
As shown in fig. 1, if the cell ID of cell 1 is 0, the cell ID of cell 2 is 1, UE1 is a target terminal, the network sides of cell 1 and cell 2 are both 4 transmit antennas, and CRS port 2 and CRS port 3 are predefined by default by the network side and the target terminal to measure interference information. The CRS port time-frequency positions of cell 1 and cell 2 are shown in fig. 2. Cell 1 network side transmit interference measurementWhen the indication information is used for measuring interference for the target terminal UE1, the network side may send zero-power signals on REs corresponding to CRS port 2 and CRS port 3 of the bandwidth occupied by UE1, and the signals received by UE1 at CRS port 2 and CRS port 3 are interference from cell 2And adding white noise. The target terminal demodulates the received data using an MMSE-IRC receiver.
Or, the network side configures a CRS port for the target terminal UE1 to measure interference, where the CRS port available for configuration includes one or more of CRS port 0, CRS port 1, CRS port 2, and CRS port 3, and the configuration may be performed through higher layer signaling, or through DCI signaling, for example, through DCI signaling with 2 bits, as shown in table 1, or through DCI signaling with 3 bits, as shown in table 2.
Table 1
| 00 | Interference measurement through CRS port 0 |
| 01 | Interference measurement through CRS Port 1 |
| 10 | Interference measurement through CRS port 2 |
| 11 | Interference measurement according to CRS port 3 |
Table 2
Example two
The embodiment provides an interference measurement method, wherein a network side sends interference measurement indication information through a high-level signaling and/or a physical-layer dynamic signaling, and the interference measurement indication information indicates a target terminal to perform interference measurement through specified data and/or control channel resources.
The specified data and/or control channel resources are configured by a network side, or are predefined resources, the network side sends zero-power signals on the REs corresponding to the resources, and the target terminal performs interference measurement through the signals received on the resources.
The data and/or control channel resources for interference measurement, in case of a Normal cyclic prefix (Normal CP) of an FDD system, the resources include one or more of the following:
(1) other resources than the resources occupied by the DMRS and CSI-RS of the first and/or second last time domain symbol of the first and/or second slot within each subframe, as shown in FIG. 3, are predefined(as resource 1, time-frequency position coordinates are (7, 5), (7, 6), (7, 12), (7, 13)) and/or(marked as resource 2, time-frequency position coordinates are (4, 5), (4, 6), (4, 12), (4, 13)) for measuring interference, or informing the target terminal to use resource 1 and/or resource 2 for interference measurement through high-level signaling or DCI signaling; or defineThe REs of (7, 5), (7, 6) are resource 1, RE resource 2 of (7, 12) and (7, 13) are defined, resource 3 of (4, 5) and (4, 6) are defined, and resource 4 of (4, 12) and (4, 13) are defined, and the target terminal is notified by higher layer signaling or DCI signaling to use one or more of these 4 resources.
(2) As shown in fig. 4, in consideration of shifting the frequency domain position of the CRS with the cell ID (the initial frequency domain position of the CRS in one RB = (cell ID) mod 6), resources including the CRS are divided into 4 groups, and the resources occupied by the CRS in each group are excluded when the resources are used for interference measurement, so that the resources really usable by each group are 4 REs. Notifying the target terminal to use resource 1 and/or resource 2 and/or resource 3 and/or resource 4 for interference measurement through higher layer signaling or DCI signaling, as shown in table 3;
table 3
(3) As shown in fig. 5, in consideration that the frequency domain position of the CRS is shifted along with the cell ID (the initial frequency domain position of the CRS in one RB = (cell ID) mod 6), so that the resources including the CRS are divided into 4 groups, and the resources occupied by the CRS in each group are excluded when the resources are used for interference measurement, so that the resources really usable by each group are 4 REs. Notifying the target terminal to use resource 1 and/or resource 2 and/or resource 3 and/or resource 4 for interference measurement through higher layer signaling or DCI signaling, as shown in table 4; or, each of the 4 groups of resources may be further divided into 2 groups according to the difference of the time slot in which the resource is located, so as to obtain 8 resources, and the target terminal is notified through a high-layer signaling or a DCI signaling to use one of the 8 resources for interference measurement.
Table 4
In addition to notifying the target terminal of what resource to use for interference measurement through higher layer signaling or DCI signaling as described above, the target terminal may determine a resource index for interference measurement through the following formula 1 or formula 2:
equation 1: resource index (physical cell ID/virtual cell ID) mod (total number of resources) +1
Equation 2: resource index (physical cell ID/virtual cell ID) mod (total resource number)
Note that equation 1 is used if the resource index is numbered from 1, and equation 2 is used if the resource index is numbered from 0.
EXAMPLE III
The embodiment provides an interference measurement method, wherein a network side sends interference measurement indication information through a high-level signaling and/or a physical-layer dynamic signaling, and the interference measurement indication information indicates a target terminal to perform interference measurement through specified data and/or control channel resources.
The specified data and/or control channel resources are configured by a network side, or are predefined resources, the network side sends zero-power signals on the REs corresponding to the resources, and the target terminal performs interference measurement through the signals received on the resources.
The data and/or control channel resources for interference measurement, in case of an Extended cyclic prefix (Extended CP) of the FDD system, include one or more of the following:
(1) as shown in fig. 6, the resource of the third time domain symbol of the second slot in each subframe is notified, through high layer signaling or DCI signaling, that the target terminal uses resource 1 (whose time-frequency position coordinates are (11, 8), (10, 8), (9, 8), (8, 8)) and/or resource 2 (whose time-frequency position coordinates are (7, 8), (6, 8), (5, 8), (4, 8)) and/or resource 3 (whose time-frequency position coordinates are (3, 8), (2, 8), (1, 8), (0, 8)) for interference measurement; or, the REs of (11, 8), (10, 8) are defined as resource 1, the REs of (9, 8), (8, 8) are defined as resource 2, the REs of (7, 8), (6, 8) are defined as resource 3, the REs of (5, 8), (4, 8) are defined as resource 4, the REs of (3, 8), (2, 8) are defined as resource 5, and the REs of (1, 8), (0, 8) are defined as resource 6, and the target terminal is notified by higher layer signaling or DCI signaling to use one or more of these 6 resources for interference measurement.
(2) The resources of the first and/or second time domain symbol of the second slot in each subframe, except for the resources occupied by the CRS, are shown in fig. 7. Considering that the frequency domain position of the CRS is shifted with the cell ID (initial frequency domain position of the CRS in one RB = (cell ID) mod 6), the resources including the CRS are divided into 4 groups, and when the resources are used for interference measurement, the resources occupied by the CRS in each group are excluded, so that the resources really usable by each group are 4 REs. Informing the target terminal to use the resource 1 and/or the resource 2 and/or the resource 3 and/or the resource 4 for interference measurement through high-layer signaling or DCI signaling; or, each of the 4 groups of resources may be further divided into 2 groups according to the difference of the time slot in which the resource is located, so as to obtain 8 resources, and the target terminal is notified through a high-layer signaling or a DCI signaling to use one of the 8 resources for interference measurement.
The target terminal may also determine the resource index for interference measurement by equation 1 or equation 2 as follows:
equation 1: resource index (physical cell ID/virtual cell ID) mod (total number of resources) +1
Equation 2: resource index (physical cell ID/virtual cell ID) mod (total resource number)
Note that equation 1 is used if the resource index is numbered from 1, and equation 2 is used if the resource index is numbered from 0.
Example four
The embodiment provides an interference measurement method, wherein a network side sends interference measurement indication information through a high-level signaling and/or a physical-layer dynamic signaling, and the interference measurement indication information indicates a target terminal to perform interference measurement through specified data and/or control channel resources.
The specified data and/or control channel resources are configured by a network side, or are predefined resources, the network side sends zero-power signals on the REs corresponding to the resources, and the target terminal performs interference measurement through the signals received on the resources.
The data and/or control channel resources for interference measurement, in case of a conventional cyclic prefix of a TDD system (CRS port number is 2), include one or more of the following:
(1) as shown in fig. 8, the resources other than the resources occupied by DMRS in the first and/or second time domain symbols in each subframe are defined as RE with coordinates (9, 5), (9, 6), (9, 12), (9, 13) as resource 1, RE with coordinates (8, 5), (8, 6), (8, 12) and (8, 13) as resource 2, RE with coordinates (7, 5), (7, 6), (7, 12), (7, 13) as resource 3, RE with coordinates (4, 5), (4, 6), (4, 12) and (4, 13) as resource 4, RE with coordinates (3, 5), (3, 6), (3, 12) and (3, 13) as resource 5, RE with coordinates (2, 5), (2, 6), (2, 12) RE of (2, 13) is resource 5;
(2) resources other than the resources occupied by the CRS of the fifth time domain symbol of the first slot and/or the second slot in each subframe, such as 4 resources shown in fig. 9;
(3) as shown in fig. 10, the resources of the third time domain symbol of the second slot in each subframe include RE with coordinates (11, 9), (10, 9), (9, 9), (8, 9) as resource 1, RE with coordinates (7, 9), (6, 9), (5, 9), (4, 9) as resource 2, and RE with coordinates (3, 9), (2, 9), (1, 9), (0, 9) as resource 3.
The network side informs the target terminal to use one or more resources of the multiple resources for interference measurement through higher layer signaling or DCI signaling, or the target terminal may further determine a resource index for interference measurement through the following formula 1 or formula 2:
equation 1: resource index (physical cell ID/virtual cell ID) mod (total number of resources) +1
Equation 2: resource index (physical cell ID/virtual cell ID) mod (total resource number)
Note that equation 1 is used if the resource index is numbered from 1, and equation 2 is used if the resource index is numbered from 0.
EXAMPLE five
The embodiment provides an interference measurement method, wherein a network side sends interference measurement indication information through a high-level signaling and/or a physical-layer dynamic signaling, and the interference measurement indication information indicates a target terminal to perform interference measurement through specified data and/or control channel resources.
The specified data and/or control channel resources are configured by a network side, or are predefined resources, the network side sends zero-power signals on the REs corresponding to the resources, and the target terminal performs interference measurement through the signals received on the resources.
The data and/or control channel resources for interference measurement, in case of TDD system extended cyclic prefix (CRS port number is 2), include one or more of the following:
(1) in other resources, except for the resources occupied by the DMRS, of the first and/or second time domain symbol from the last to last and/or second time slot in each subframe, as shown in fig. 11, REs with coordinates (9, 4), (9, 5) are defined as resource 1, REs with coordinates (6, 4), (6, 5) are defined as resource 2, REs with coordinates (3, 4), (3, 5) are defined as resource 3, and REs with coordinates (0, 4), (0, 5) are defined as resource 4;
(2) other resources of the first and/or second time domain symbol of the second slot in each subframe except for the resource occupied by the CRS are defined as 4 resources as shown in fig. 12;
the network side informs the target terminal to use one or more resources of the multiple resources for interference measurement through higher layer signaling or DCI signaling, or the target terminal may further determine a resource index for interference measurement through the following formula 1 or formula 2:
equation 1: resource index (physical cell ID/virtual cell ID) mod (total number of resources) +1
Equation 2: resource index (physical cell ID/virtual cell ID) mod (total resource number)
Note that equation 1 is used if the resource index is numbered from 1, and equation 2 is used if the resource index is numbered from 0.
EXAMPLE six
The network side sends interference measurement indication information to a target terminal to indicate the target terminal to carry out interference measurement, wherein the interference measurement indication information is used for indicating the type of an interference source to the target terminal.
The information of the interference source type comprises one or more of the following combinations:
(1) interference from a PDSCH;
(2) interference from ePDCCH;
(3) interference from the PDCCH;
(4) interference from mixed channels.
The network side indicates the type of interference suffered to the target terminal through 2-bit higher layer signaling or DCI signaling, as shown in table 5.
Table 5
| 00 | The interference source is PDSCH |
| 01 | The interference source is ePDCCH |
| 10 | The interference source is PDCCH |
| 11 | The interference source being a mixed channel |
In addition, after the target terminal receives the indication information of the interference source type, the target terminal may further determine, according to the indication information, the number of REs used for interference measurement:
(1) if the interference source is PDSCH, predefining the number of REs for interference measurement to be 2;
(2) if the interference source is ePDCCH, predefining the RE number for interference measurement to be 4;
(3) if the interference source is PDCCH, predefining the RE number for interference measurement to be 4;
(4) if the interference source is a mixed channel, predefining the number of REs for interference measurement to be 4;
and the position of the predefined RE is related to the physical cell ID of the target terminal or the virtual cell ID of the target terminal, and the target terminal measures interference on the predefined RE and performs interference elimination and suppression.
EXAMPLE seven
The embodiment provides an interference measurement method, firstly, scheduling type information is interacted between a base station and a base station at a network side through an X2 interface, and the scheduling type includes: and performing resource scheduling by taking a sub-band as a unit, performing resource scheduling by taking an RB as a unit, and determining whether the precoding operation has bundling or not. After receiving scheduling type information sent by an adjacent cell (strong interference cell), a base station of a cell where a target terminal is located determines the number of REs used for interference measurement by the target terminal. For example, if the neighboring strong interference cell is scheduled in units of subbands and the precoding operation is bundled, the number of REs used for interference measurement is 2, and if the neighboring strong interference cell is scheduled in units of RBs, the number of REs used for interference measurement is 4. After the number of REs is determined, the position of interference measurement resources is determined according to the physical cell ID of the target terminal or the virtual cell ID of the target terminal, and the network side indicates the number and the position information of the REs used for interference measurement to the target terminal through high-layer signaling or physical-layer signaling to perform interference measurement. The method for determining the number of REs for interference measurement according to the scheduling type of the neighboring cell can reduce the resource overhead for interference measurement and ensure the accuracy of the interference measurement.
Example eight
The method comprises the steps that a network side sends interference measurement parameter configuration information to a target terminal to indicate the target terminal to carry out interference measurement, wherein the parameter configuration information used for the interference measurement comprises one or more of the following information:
(1) information indicating a physical cell ID of an interfering cell and/or a virtual cell ID of an interfering user;
(2) information indicating a transmission mode of an interfering UE;
(3) information indicating a transmission signal power of an interfering cell;
and the target terminal measures and obtains a channel from the interference cell to the target terminal based on the parameter configuration information, and then the advanced receiver is adopted for interference elimination and suppression.
The integrated module according to the embodiment of the present invention may also be stored in a computer-readable storage medium if it is implemented in the form of a software functional module and sold or used as an independent product. Based on such understanding, the technical solutions of the embodiments of the present invention may be essentially implemented or a part contributing to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes. Thus, embodiments of the invention are not limited to any specific combination of hardware and software.
Accordingly, an embodiment of the present invention further provides a computer storage medium, in which a computer program is stored, where the computer program is used to execute the interference measurement method according to the embodiment of the present invention.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (58)
1. An interference measurement method, characterized in that the method comprises:
the method comprises the following steps that a network side sends interference measurement indication information to a target terminal to indicate the target terminal to carry out interference measurement, wherein the interference measurement indication information comprises at least one of the following information:
parameter configuration information for indicating interference measurements;
information indicating a type of interference source.
2. The method of claim 1, wherein the parameter configuration information for indicating interference measurement comprises at least one of the following information:
a common reference signal, CRS, port for interference measurement;
data and/or control channel resources for interference measurements;
information indicating a physical cell identity, ID, of the interfering cell and/or a virtual cell ID of the interfering user;
information indicating an interfering user equipment, UE, transmission mode;
information indicating the transmission signal power of the interfering cell.
3. The method of claim 2, wherein the CRS ports for interference measurement comprise: at least one port of CRS port 0, CRS port 1, CRS port 2 and CRS port 3;
the method further comprises the following steps: and the network side sends a zero-power signal on a resource element RE corresponding to the CRS port of the bandwidth where the target terminal is located, and the target terminal carries out interference measurement through the signal received on the RE.
4. The method of claim 2, wherein the CRS ports for interference measurement are CRS port 2 and/or CRS port 3.
5. The method according to claim 2, wherein the data and/or control channel resources for interference measurement are configured by a network side or predefined resources;
the method further comprises the following steps: and the network side sends a zero-power signal on the RE corresponding to the resource, and the target terminal carries out interference measurement through the signal received on the resource.
6. The method according to claim 2, characterized in that the data and/or control channel resources for interference measurement, the number of resources N within each resource block RB being related to the scheduling type of the neighbouring cell;
when the adjacent cell is scheduled by taking a sub-band as a unit, N < = M; when the adjacent cell is scheduled by taking RB as a unit, N > M, wherein M is an integer between 1 and 4, including 1 and 4.
7. The method of claim 2, wherein the data and/or control channel resources for interference measurement comprise:
under the condition of a Normal cyclic prefix Normal CP of a frequency division duplex FDD system, other resources except for resources occupied by a demodulation reference signal DMRS and a channel state information reference signal CSI-RS, of a first and/or a second time domain symbol of a first and/or a second slot in each subframe include REs having coordinates (7, 5), (7, 6), (7, 12), (7, 13), (4, 5), (4, 6), (4, 12) and (4, 13);
or,
the resources, except for the resources occupied by the CRS, of the first and/or second time domain symbol of the second slot in each subframe include REs having coordinates (11, 7), (11, 8), (10, 7), (10, 8), (8, 7), (8, 8), (7, 7), (7, 8), (5, 7), (5, 8), (4, 7), (4, 8), (2, 7), (2, 8), (1, 7), and (1, 8);
or,
the other resources of the fifth time domain symbol of the first and/or second slot in each subframe, except for the resources occupied by the CRS, include REs having coordinates (11, 4), (11, 11), (10, 4), (10, 11), (8, 4), (8, 11), (7, 4), (7, 11), (5, 4), (5, 11), (4, 4), (4, 11), (2, 4), (2, 11), (1, 4), (1, 11).
8. The method of claim 2, wherein the data and/or control channel resources for interference measurement comprise:
in the case of the Extended cyclic prefix Extended CP of the FDD system, the resources of the third time domain symbol of the second slot in each subframe include REs having coordinates (11, 8), (10, 8), (9, 8), (8, 8), (7, 8), (6, 8), (5, 8), (4, 8), (3, 8), (2, 8), (1, 8), and (0, 8);
or,
the other resources of the first and/or second time domain symbol of the second slot in each subframe except for the resource occupied by the CRS include REs having coordinates (11, 6), (11, 7), (10, 6), (10, 7), (8, 6), (8, 7), (7, 6), (7, 7), (5, 6), (5, 7), (4, 6), (4, 7), (2, 6), (2, 7), (1, 6) and (1, 7).
9. The method of claim 2, wherein the data and/or control channel resources for interference measurement comprise:
under the condition of a conventional cyclic prefix of a time division duplex TDD system, other resources except for resources occupied by the DMRS, of the first time domain symbol and/or the second time domain symbol of the first time slot and/or the second time slot in each subframe comprise REs with the coordinates of (9, 5), (9, 6), (9, 12), (9, 13), (8, 5), (8, 6), (8, 12), (8, 13), (7, 5), (7, 6), (7, 12), (7, 13), (4, 5), (4, 6), (4, 12), (4, 13), (3, 5), (3, 6), (3, 12) and (3, 13);
or,
resources other than resources occupied by the CRS of the fifth time domain symbol of the first slot and/or the second slot in each subframe include REs having coordinates (11, 4), (11, 11), (10, 4), (10, 11), (8, 4), (8, 11), (7, 4), (7, 11), (5, 4), (5, 11), (4, 4), (4, 11), (2, 4), (2, 11), (1, 4), (1, 11);
or,
the resources of the third time domain symbol of the second slot in each subframe include REs having coordinates (11, 9), (10, 9), (9, 9), (8, 9), (7, 9), (6, 9), (5, 9), (4, 9), (3, 9), (2, 9), (1, 9), and (0, 9).
10. The method of claim 2, wherein the data and/or control channel resources for interference measurement comprise:
under the condition that a TDD system extends a cyclic prefix, other resources except for resources occupied by the DMRS, of the last time domain symbol and/or the last time domain symbol of the first time slot and/or the second time slot in each subframe comprise REs with the coordinates of (9, 4), (9, 5), (6, 4), (6, 5), (3, 4), (3, 5), (0, 4) and (0, 5);
or,
the other resources of the first and/or second time domain symbol of the second slot in each subframe except for the resource occupied by the CRS include REs having coordinates (11, 6), (11, 9), (10, 6), (10, 9), (8, 6), (8, 9), (7, 6), (7, 9), (5, 6), (5, 9), (4, 6), (4, 9), (2, 6), (2, 9), (1, 6), and (1, 9).
11. The method of claim 1, wherein the information indicating the type of the interference source comprises at least one of the following information:
interference from a physical downlink shared channel, PDSCH;
interference from an enhanced physical downlink control channel, ePDCCH;
interference from a physical downlink control channel, PDCCH;
interference from mixed channels.
12. The method of claim 2, further comprising: and the network side indicates the CRS port for interference measurement to a target terminal through high-level signaling/physical-layer dynamic signaling.
13. The method of claim 12, wherein a network side configures multiple sets of CRS ports for interference measurement for the target terminal through the high layer signaling, and indicates to the target terminal through physical layer dynamic signaling that one set of CRS ports is adopted for current interference measurement.
14. The method of claim 2, further comprising: and the network side indicates the data and/or control channel resources for interference measurement to the target terminal through high-layer signaling/physical layer dynamic signaling.
15. The method according to claim 14, wherein a network side configures multiple sets of data and/or control channel resources for interference measurement for the target terminal through the higher layer signaling, and indicates to the target terminal to use one set of data and/or control channel resources for current interference measurement through physical layer dynamic signaling.
16. The method of claim 2, further comprising: and the network side transmits a zero-power signal on the CRS port for interference measurement or data and/or control channel resources for interference measurement, and performs data mapping by adopting a rate matching or puncturing mode.
17. The method of claim 6, wherein the scheduling type information is exchanged between the network side base station and the base station through an X2 interface, and the scheduling type includes: and performing resource scheduling by taking a sub-band as a unit, performing resource scheduling by taking an RB as a unit, and determining whether binding bundling exists in precoding operation.
18. An interference measurement method, characterized in that the method comprises:
the method comprises the steps that a target terminal receives interference measurement indication information sent by a network side, interference measurement is carried out according to the indication of the interference measurement indication information, and the interference measurement indication information comprises at least one of the following information:
parameter configuration information for indicating interference measurements;
information indicating a type of interference source.
19. The method of claim 18, wherein the parameter configuration information for indicating interference measurement comprises at least one of the following information:
a common reference signal, CRS, port for interference measurement;
data and/or control channel resources for interference measurements;
information indicating a physical cell identity, ID, of the interfering cell and/or a virtual cell ID of the interfering user;
information indicating an interfering user equipment, UE, transmission mode;
information indicating the transmission signal power of the interfering cell.
20. The method of claim 19, wherein the CRS ports for interference measurement comprise: at least one port of CRS port 0, CRS port 1, CRS port 2 and CRS port 3;
the method further comprises the following steps: and the network side sends a zero-power signal on a resource element RE corresponding to the CRS port of the bandwidth where the target terminal is located, and the target terminal carries out interference measurement through the signal received on the RE.
21. The method of claim 19, wherein the CRS ports for interference measurement are CRS port 2 and/or CRS port 3.
22. The method according to claim 19, wherein the data and/or control channel resources for interference measurement are configured by a network side or predefined resources;
the method further comprises the following steps: and the network side sends a zero-power signal on the RE corresponding to the resource, and the target terminal carries out interference measurement through the signal received on the resource.
23. The method according to claim 19, wherein the data and/or control channel resources for interference measurement have a number of resources N per resource block RB related to the scheduling type of the neighboring cell. When the adjacent cell is scheduled by taking a sub-band as a unit, N < = M; when the adjacent cell is scheduled by taking RB as a unit, N > M, wherein M is an integer between 1 and 4, including 1 and 4.
24. The method of claim 19, wherein the data and/or control channel resources for interference measurement comprise:
under the condition of a Normal cyclic prefix Normal CP of a frequency division duplex FDD system, other resources except for resources occupied by a demodulation reference signal DMRS and a channel state information reference signal CSI-RS, of a first and/or a second time domain symbol of a first and/or a second slot in each subframe include REs having coordinates (7, 5), (7, 6), (7, 12), (7, 13), (4, 5), (4, 6), (4, 12) and (4, 13);
or,
the resources, except for the resources occupied by the CRS, of the first and/or second time domain symbol of the second slot in each subframe include REs having coordinates (11, 7), (11, 8), (10, 7), (10, 8), (8, 7), (8, 8), (7, 7), (7, 8), (5, 7), (5, 8), (4, 7), (4, 8), (2, 7), (2, 8), (1, 7), and (1, 8);
or,
the other resources of the fifth time domain symbol of the first and/or second slot in each subframe, except for the resources occupied by the CRS, include REs having coordinates (11, 4), (11, 11), (10, 4), (10, 11), (8, 4), (8, 11), (7, 4), (7, 11), (5, 4), (5, 11), (4, 4), (4, 11), (2, 4), (2, 11), (1, 4), (1, 11).
25. The method of claim 19, wherein the data and/or control channel resources for interference measurement comprise:
in the case of the Extended cyclic prefix Extended CP of the FDD system, the resources of the third time domain symbol of the second slot in each subframe include REs having coordinates (11, 8), (10, 8), (9, 8), (8, 8), (7, 8), (6, 8), (5, 8), (4, 8), (3, 8), (2, 8), (1, 8), and (0, 8);
or,
the other resources of the first and/or second time domain symbol of the second slot in each subframe except for the resource occupied by the CRS include REs having coordinates (11, 6), (11, 7), (10, 6), (10, 7), (8, 6), (8, 7), (7, 6), (7, 7), (5, 6), (5, 7), (4, 6), (4, 7), (2, 6), (2, 7), (1, 6) and (1, 7).
26. The method of claim 19, wherein the data and/or control channel resources for interference measurement comprise:
under the condition of a conventional cyclic prefix of a time division duplex TDD system, other resources except for resources occupied by the DMRS, of the first time domain symbol and/or the second time domain symbol of the first time slot and/or the second time slot in each subframe comprise REs with the coordinates of (9, 5), (9, 6), (9, 12), (9, 13), (8, 5), (8, 6), (8, 12), (8, 13), (7, 5), (7, 6), (7, 12), (7, 13), (4, 5), (4, 6), (4, 12), (4, 13), (3, 5), (3, 6), (3, 12) and (3, 13);
or,
resources other than resources occupied by the CRS of the fifth time domain symbol of the first slot and/or the second slot in each subframe include REs having coordinates (11, 4), (11, 11), (10, 4), (10, 11), (8, 4), (8, 11), (7, 4), (7, 11), (5, 4), (5, 11), (4, 4), (4, 11), (2, 4), (2, 11), (1, 4), (1, 11);
or, the resource of the third time domain symbol of the second slot in each subframe includes REs with coordinates (11, 9), (10, 9), (9, 9), (8, 9), (7, 9), (6, 9), (5, 9), (4, 9), (3, 9), (2, 9), (1, 9), and (0, 9).
27. The method of claim 19, wherein the data and/or control channel resources for interference measurement comprise:
under the condition that a TDD system extends a cyclic prefix, other resources except for resources occupied by the DMRS, of the last time domain symbol and/or the last time domain symbol of the first time slot and/or the second time slot in each subframe comprise REs with the coordinates of (9, 4), (9, 5), (6, 4), (6, 5), (3, 4), (3, 5), (0, 4) and (0, 5);
or,
the other resources of the first and/or second time domain symbol of the second slot in each subframe except for the resource occupied by the CRS include REs having coordinates (11, 6), (11, 9), (10, 6), (10, 9), (8, 6), (8, 9), (7, 6), (7, 9), (5, 6), (5, 9), (4, 6), (4, 9), (2, 6), (2, 9), (1, 6), and (1, 9).
28. The method of claim 18, wherein the information indicating the type of the interference source comprises at least one of the following information:
interference from a physical downlink shared channel, PDSCH;
interference from an enhanced physical downlink control channel, ePDCCH;
interference from a physical downlink control channel, PDCCH;
interference from mixed channels.
29. The method of claim 19, further comprising: and the target terminal receives CRS port information sent by the network side through high-level signaling/physical-layer dynamic signaling, and determines the CRS port for interference measurement.
30. The method of claim 29, wherein a target terminal receives multiple sets of CRS ports configured by a network side for the target terminal through the higher layer signaling, and determines to use one set of CRS ports for current interference measurement through the received physical layer dynamic signaling.
31. The method according to claim 19, wherein the target terminal receives the data and/or control channel resources for interference measurement sent by the network side through higher layer signaling/physical layer dynamic signaling, and determines the data and/or control channel resources for interference measurement.
32. The method according to claim 31, wherein a target terminal receives multiple sets of data and/or control channel resources configured by a network side for the target terminal through the higher layer signaling for interference measurement, and determines to use one set of data and/or control channel resources for current interference measurement through the received physical layer dynamic signaling.
33. The method of claim 19, wherein the target terminal defaults to a network side transmitting a zero-power signal on the CRS port for interference measurement or on data and/or control channel resources for interference measurement, and extracting data according to a rate matching or puncturing rule of data mapping.
34. A network side device, wherein the network side device comprises:
an interference measurement indication unit, configured to indicate a target terminal to perform interference measurement according to interference measurement indication information, where the interference measurement indication information includes: parameter configuration information for indicating interference measurements, and/or information for indicating a type of interference source;
and the sending unit is used for sending the interference measurement indication information to a target terminal.
35. The apparatus of claim 34, wherein the interference measurement indication unit is further configured to indicate parameter configuration information of interference measurement includes at least one of the following information:
a common reference signal, CRS, port for interference measurement;
data and/or control channel resources for interference measurements;
information indicating a physical cell identity, ID, of the interfering cell and/or a virtual cell ID of the interfering user;
information indicating an interfering user equipment, UE, transmission mode;
information indicating the transmission signal power of the interfering cell.
36. The apparatus of claim 35, wherein the interference measurement indication unit, further configured to indicate CRS ports for interference measurement comprises: at least one port of CRS port 0, CRS port 1, CRS port 2 and CRS port 3;
the sending unit is further configured to send a zero power signal on a resource element RE corresponding to the CRS port of the bandwidth where the target terminal is located.
37. The apparatus of claim 35, wherein the interference measurement indication unit is further configured to indicate data and/or control channel resources of interference measurement, configured by the network side apparatus, or predefined resources;
the sending unit is further configured to send a zero-power signal on the RE corresponding to the resource.
38. The apparatus of claim 35, wherein the interference measurement indication unit is further configured to indicate data and/or control channel resources for interference measurement, and comprises:
under the condition of a Normal cyclic prefix Normal CP of a frequency division duplex FDD system, other resources except for resources occupied by a demodulation reference signal DMRS and a channel state information reference signal CSI-RS, of a first and/or a second time domain symbol of a first and/or a second slot in each subframe include REs having coordinates (7, 5), (7, 6), (7, 12), (7, 13), (4, 5), (4, 6), (4, 12) and (4, 13);
or,
the resources, except for the resources occupied by the CRS, of the first and/or second time domain symbol of the second slot in each subframe include REs having coordinates (11, 7), (11, 8), (10, 7), (10, 8), (8, 7), (8, 8), (7, 7), (7, 8), (5, 7), (5, 8), (4, 7), (4, 8), (2, 7), (2, 8), (1, 7), and (1, 8);
or,
the other resources of the fifth time domain symbol of the first and/or second slot in each subframe, except for the resources occupied by the CRS, include REs having coordinates (11, 4), (11, 11), (10, 4), (10, 11), (8, 4), (8, 11), (7, 4), (7, 11), (5, 4), (5, 11), (4, 4), (4, 11), (2, 4), (2, 11), (1, 4), (1, 11).
39. The apparatus of claim 35, wherein the interference measurement indication unit is further configured to indicate data and/or control channel resources for interference measurement, and comprises:
in the case of the Extended cyclic prefix Extended CP of the FDD system, the resources of the third time domain symbol of the second slot in each subframe include REs having coordinates (11, 8), (10, 8), (9, 8), (8, 8), (7, 8), (6, 8), (5, 8), (4, 8), (3, 8), (2, 8), (1, 8), and (0, 8);
or,
the other resources of the first and/or second time domain symbol of the second slot in each subframe except for the resource occupied by the CRS include REs having coordinates (11, 6), (11, 7), (10, 6), (10, 7), (8, 6), (8, 7), (7, 6), (7, 7), (5, 6), (5, 7), (4, 6), (4, 7), (2, 6), (2, 7), (1, 6) and (1, 7).
40. The apparatus of claim 35, wherein the interference measurement indication unit is further configured to indicate data and/or control channel resources for interference measurement, and comprises:
under the condition of a conventional cyclic prefix of a time division duplex TDD system, other resources except for resources occupied by the DMRS, of the first time domain symbol and/or the second time domain symbol of the first time slot and/or the second time slot in each subframe comprise REs with the coordinates of (9, 5), (9, 6), (9, 12), (9, 13), (8, 5), (8, 6), (8, 12), (8, 13), (7, 5), (7, 6), (7, 12), (7, 13), (4, 5), (4, 6), (4, 12), (4, 13), (3, 5), (3, 6), (3, 12) and (3, 13);
or,
resources other than resources occupied by the CRS of the fifth time domain symbol of the first slot and/or the second slot in each subframe include REs having coordinates (11, 4), (11, 11), (10, 4), (10, 11), (8, 4), (8, 11), (7, 4), (7, 11), (5, 4), (5, 11), (4, 4), (4, 11), (2, 4), (2, 11), (1, 4), (1, 11);
or,
the resources of the third time domain symbol of the second slot in each subframe include REs having coordinates (11, 9), (10, 9), (9, 9), (8, 9), (7, 9), (6, 9), (5, 9), (4, 9), (3, 9), (2, 9), (1, 9), and (0, 9).
41. The apparatus of claim 35, wherein the interference measurement indication unit is further configured to indicate data and/or control channel resources for interference measurement, and comprises:
under the condition that a TDD system extends a cyclic prefix, other resources except for resources occupied by the DMRS, of the last time domain symbol and/or the last time domain symbol of the first time slot and/or the second time slot in each subframe comprise REs with the coordinates of (9, 4), (9, 5), (6, 4), (6, 5), (3, 4), (3, 5), (0, 4) and (0, 5);
or,
the other resources of the first and/or second time domain symbol of the second slot in each subframe except for the resource occupied by the CRS include REs having coordinates (11, 6), (11, 9), (10, 6), (10, 9), (8, 6), (8, 9), (7, 6), (7, 9), (5, 6), (5, 9), (4, 6), (4, 9), (2, 6), (2, 9), (1, 6), and (1, 9).
42. The apparatus of claim 35, wherein the interference measurement indication unit is further configured to indicate the CRS ports for interference measurement to a target terminal through higher layer signaling/physical layer dynamic signaling.
43. The apparatus of claim 42, wherein the interference measurement indication unit is further configured to configure multiple sets of CRS ports for interference measurement, and indicate, to a target terminal through physical layer dynamic signaling, to use one set of CRS ports for current interference measurement.
44. The apparatus of claim 35, wherein the interference measurement indication unit is further configured to indicate the data and/or control channel resources for interference measurement to a target terminal through higher layer signaling/physical layer dynamic signaling.
45. The apparatus of claim 44, wherein the interference measurement indication unit is further configured to configure multiple sets of data and/or control channel resources for interference measurement for the target terminal through the higher layer signaling, and indicate to the target terminal to use one set of data and/or control channel resources for current interference measurement through physical layer dynamic signaling.
46. The apparatus of claim 35, wherein the transmitting unit is further configured to transmit a zero power signal on the CRS ports for interference measurement or on data and/or control channel resources for interference measurement, and to perform data mapping in a rate matching or puncturing manner.
47. A terminal-side device, wherein the terminal-side device is a target terminal, comprising:
a receiving unit, configured to receive interference measurement indication information, where the interference measurement indication information includes: parameter configuration information for indicating interference measurements, and/or information for indicating a type of interference source;
and the interference measurement unit is used for carrying out interference measurement according to the indication of the interference measurement indication information.
48. The apparatus of claim 47, wherein the interference measurement unit is further configured to perform interference measurement according to parameter configuration information indicating interference measurement, and wherein the parameter configuration information includes at least one of the following information:
a common reference signal, CRS, port for interference measurement;
data and/or control channel resources for interference measurements;
information indicating a physical cell identity, ID, of the interfering cell and/or a virtual cell ID of the interfering user;
information indicating an interfering user equipment, UE, transmission mode;
information indicating the transmission signal power of the interfering cell.
49. The apparatus of claim 48, wherein the interference measurement unit is further configured to perform interference measurement according to a CRS port indicating interference measurement, and wherein the CRS port for interference measurement comprises: at least one port of CRS port 0, CRS port 1, CRS port 2 and CRS port 3;
the receiving unit is further configured to perform interference measurement on a signal received on a resource element RE corresponding to the CRS port of a bandwidth where a target terminal is located.
50. The apparatus of claim 48, wherein the interference measurement unit is further configured to perform interference measurement according to interference measurement data and/or control channel resources, and the interference measurement data and/or control channel resources are configured by a network side apparatus or are predefined resources;
the receiving unit is further configured to perform interference measurement through signals received on REs corresponding to the resources.
51. The apparatus of claim 48, wherein the interference measurement unit is further configured to perform interference measurement according to data and/or control channel resources indicating interference measurement, and wherein the data and/or control channel resources of the interference measurement comprise:
under the condition of a Normal cyclic prefix Normal CP of a frequency division duplex FDD system, other resources except for resources occupied by a demodulation reference signal DMRS and a channel state information reference signal CSI-RS, of a first and/or a second time domain symbol of a first and/or a second slot in each subframe include REs having coordinates (7, 5), (7, 6), (7, 12), (7, 13), (4, 5), (4, 6), (4, 12) and (4, 13);
or,
the resources, except for the resources occupied by the CRS, of the first and/or second time domain symbol of the second slot in each subframe include REs having coordinates (11, 7), (11, 8), (10, 7), (10, 8), (8, 7), (8, 8), (7, 7), (7, 8), (5, 7), (5, 8), (4, 7), (4, 8), (2, 7), (2, 8), (1, 7), and (1, 8);
or,
the other resources of the fifth time domain symbol of the first and/or second slot in each subframe, except for the resources occupied by the CRS, include REs having coordinates (11, 4), (11, 11), (10, 4), (10, 11), (8, 4), (8, 11), (7, 4), (7, 11), (5, 4), (5, 11), (4, 4), (4, 11), (2, 4), (2, 11), (1, 4), (1, 11).
52. The apparatus of claim 48, wherein the interference measurement unit is further configured to perform interference measurement according to data and/or control channel resources indicating interference measurement, and wherein the data and/or control channel resources of the interference measurement comprise:
in the case of the Extended cyclic prefix Extended CP of the FDD system, the resources of the third time domain symbol of the second slot in each subframe include REs having coordinates (11, 8), (10, 8), (9, 8), (8, 8), (7, 8), (6, 8), (5, 8), (4, 8), (3, 8), (2, 8), (1, 8), and (0, 8);
or,
the other resources of the first and/or second time domain symbol of the second slot in each subframe except for the resource occupied by the CRS include REs having coordinates (11, 6), (11, 7), (10, 6), (10, 7), (8, 6), (8, 7), (7, 6), (7, 7), (5, 6), (5, 7), (4, 6), (4, 7), (2, 6), (2, 7), (1, 6) and (1, 7).
53. The apparatus of claim 48, wherein the interference measurement unit is further configured to perform interference measurement according to data and/or control channel resources indicating interference measurement, and wherein the data and/or control channel resources of the interference measurement comprise:
under the condition of a conventional cyclic prefix of a time division duplex TDD system, other resources except for resources occupied by the DMRS, of the first time domain symbol and/or the second time domain symbol of the first time slot and/or the second time slot in each subframe comprise REs with the coordinates of (9, 5), (9, 6), (9, 12), (9, 13), (8, 5), (8, 6), (8, 12), (8, 13), (7, 5), (7, 6), (7, 12), (7, 13), (4, 5), (4, 6), (4, 12), (4, 13), (3, 5), (3, 6), (3, 12) and (3, 13);
or,
resources other than resources occupied by the CRS of the fifth time domain symbol of the first slot and/or the second slot in each subframe include REs having coordinates (11, 4), (11, 11), (10, 4), (10, 11), (8, 4), (8, 11), (7, 4), (7, 11), (5, 4), (5, 11), (4, 4), (4, 11), (2, 4), (2, 11), (1, 4), (1, 11);
or, the resource of the third time domain symbol of the second slot in each subframe includes REs with coordinates (11, 9), (10, 9), (9, 9), (8, 9), (7, 9), (6, 9), (5, 9), (4, 9), (3, 9), (2, 9), (1, 9), and (0, 9).
54. The apparatus of claim 48, wherein the interference measurement unit is further configured to perform interference measurement according to data and/or control channel resources indicating interference measurement, and wherein the data and/or control channel resources of the interference measurement comprise:
under the condition that a TDD system extends a cyclic prefix, other resources except for resources occupied by the DMRS, of the last time domain symbol and/or the last time domain symbol of the first time slot and/or the second time slot in each subframe comprise REs with the coordinates of (9, 4), (9, 5), (6, 4), (6, 5), (3, 4), (3, 5), (0, 4) and (0, 5);
or,
the other resources of the first and/or second time domain symbol of the second slot in each subframe except for the resource occupied by the CRS include REs having coordinates (11, 6), (11, 9), (10, 6), (10, 9), (8, 6), (8, 9), (7, 6), (7, 9), (5, 6), (5, 9), (4, 6), (4, 9), (2, 6), (2, 9), (1, 6), and (1, 9).
55. The device of claim 48, wherein the receiving unit is further configured to receive CRS port information sent by a network side device through higher layer signaling/physical layer dynamic signaling, and determine the CRS port for interference measurement.
56. The device of claim 55, wherein the receiving unit is further configured to receive multiple sets of CRS ports configured by a network side device for the target terminal through the higher layer signaling, and determine to use one set of CRS ports for current interference measurement through the received physical layer dynamic signaling.
57. The apparatus of claim 48, wherein the receiving unit is further configured to receive the data and/or control channel resources for interference measurement sent by a network side apparatus through higher layer signaling/physical layer dynamic signaling, and determine the data and/or control channel resources for interference measurement.
58. The apparatus of claim 57, wherein the receiving unit is further configured to receive multiple sets of data and/or control channel resources for interference measurement configured by a network side apparatus for the target terminal through the higher layer signaling, and determine to use one set of data and/or control channel resources for current interference measurement through the received physical layer dynamic signaling.
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