CN102340382A - Method and device for configuring DMRS (demodulation reference signal) scrambling code sequence - Google Patents
Method and device for configuring DMRS (demodulation reference signal) scrambling code sequence Download PDFInfo
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Abstract
The invention relates to the field of communication, and discloses a method and device for configuring a DMRS (demodulation reference signal) scrambling code sequence so as to reduce signal interference between UE (user equipment) adopting DMRS multiplexing and guarantee the signal demodulation performance of UE. In the method, a base station refers to the current application scene, and indicates the initial value configuration of the downlink DMRS scrambling code sequence used by single UE or UE group in current transmission through a signaling so as to ensure that the inter-cell or in-cell UE can flexibly perform MU (multiple -user)-MIMO (multiple input multiple output) multiplexing, thereby reducing the mutual interference between the multiplexing UE and guaranteeing the signal demodulation performance of the UE; and meanwhile, the overhead of a PDCCH (physical downlink control channel) is reduced through joint coding, the configuration of the same DMRS scrambling code sequence for the UE of different cells can be flexibly supported, and the configuration of different DMRS scrambling code sequences for the UE of the same cell can be flexibly supported, thereby supporting high-rank MU-MIMO transmission and effectively increasing the system throughput.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a method and an apparatus for configuring a DMRS scrambling sequence.
Background
The uplink reference signal transmitted in the downlink transmission of the LTE-a system mainly includes a DMRS (demodulation reference signal) and an SRS (sounding reference signal), and the DMRS signal is mainly used for performing channel estimation and synchronization on a PDSCH (physical downlink shared channel) so that a receiving end successfully demodulates data. The scrambling code sequences of the DMRS signals (called DMRS scrambling code sequences for short) are initialized and configured according to the cell ID of the serving cell, and the initialization configuration modes of the DMRS scrambling code sequences in different cells are generally different. In a CoMP (Cooperative Multiple point transmission) system, in order to improve spectrum efficiency, MU-MIMO (Multiple-user MIMO) processing may be performed, that is, a base station of Multiple cells simultaneously transmits data to Multiple UEs, or simultaneously receives transmission data of Multiple UEs, and the UEs occupy the same physical resource for multiplexing.
In the current LTE-a system, downlink DMRS scrambling sequences can be transmitted from multiple ports on the network side, and in general, the network side can transmit DMRS scrambling sequences through 8 ports (referred to as prot7 and prot8.... prot 14, respectively). And the UE detects the data according to the channel estimation obtained based on the DMRS scrambling sequence. The DMRS scrambling sequence is generated by the following formula:
wherein,the maximum number of RBs (resource blocks) in downlink, c (i) is a pseudo random sequence, and c (i) can be initialized by the following formula one:
Wherein n issIs a number of the time slot and is,
cell ID, n, of a serving cell for a UESCIDThe ID of the scrambling sequence adopted by the UE is 0 or 1, and usually, only the scrambling sequence adopted by the UE is usedport7 and/or port8 (port 7 and/or port 8) time nSCIDThe value of (a) may be 0 or 1, and in other cases the value is 0 by default.
When performing MU-MIMO transmission in the same cell, the UE may have two different DMRS port configurations and two different scrambling sequence id (scid) configurations, and thus may support at most 4-layer DMRS-based multiplexing transmission. At this time, different UEs have at most four DMRS configurations, which are:
1) DMRS configuration 1: antenna port7, SCID 0;
2) DMRS configuration 2: antenna port8, SCID 0;
3) DMRS configuration 3: antenna port7, SCID 1;
4) DMRS configuration 4: antenna port is 8 and SCID is 1.
If 4 UEs perform MU-MIMO, the above configurations 1-4 can be adopted, respectively; if 2 UEs perform MU-MIMO and each UE transmits 2 streams (i.e. the number of layers transmitted is 2), then two UEs use configurations 1-2 and 3-4, respectively. When downlink scheduling is performed in a PDCCH (physical downlink control channel), the base station jointly indicates the number of layers currently transmitted by the UE, the DMRS ports used and the SCIDs used by the UE in corresponding DCI (downlink scheduling indication) information, wherein some of the information indicates transmission for MU-MIMO. For example, the value of the 3-bit DCI delivered by the base station and the corresponding configuration content thereof may be as shown in table 0:
TABLE 0
CoMP techniques generally refer to cooperation between geographically separated transmission points. Generally, the multiple transmission points are base stations of different cells, or multiple RRHs controlled by the same cell base station. Through cooperative transmission among a plurality of transmission points, the interference among different transmission points can be effectively reduced, and the throughput of the UE, particularly the UE at the edge of a cell, is improved. For a plurality of RRHs belonging to one Macro area (Macro Cell), the same Cell ID (Cell ID) may be configured, or a plurality of cells may be formed with different Cell IDs.
Multiple transmission points (cells) in the cooperation area may transmit data to one or more UEs simultaneously to obtain joint processing and MU-MIMO gains. If the same resource is used for transmitting data to only one UE, the resource is called SU-JT (Single user Joint Transmission), as shown in FIG. 1; if the same resource transmits data to multiple UEs simultaneously, it is referred to as MU-JT (multi-user joint transmission), as shown in fig. 2.
For the case of MU-JT, if multiple RRHs form different cells and the multiplexing UE belongs to different cells, for example, UE1 shown in fig. 2 belongs to Cell 1, and UE3 belongs to Cell 3, when one base station simultaneously transmits DMRS scrambling sequences to multiple multiplexing UEs, because different DMRS scrambling sequence initialization methods are used for different UEs, the base station cannot ensure orthogonality between the DMRS scrambling sequences of the UEs through ports. At this time, the mutual interference between the multiplexing UEs is large, which may greatly affect the demodulation performance of the data, thereby reducing the transmission rate. Therefore, in this case, it is necessary to use the same DMRS scrambling sequence for the multiplexing UEs performing MU-JT transmission, that is, when the base station generates corresponding DMRS scrambling sequences for different UEs, the same initialization value is used for the used pseudo-random sequences for scrambling, regardless of whether the UEs belong to the same cell.
On the other hand, if the Cell IDs of multiple RRHs in the above case are the same, the intra-Cell scrambling code sequence is also the same, and the DMRS scrambling code sequences generated by different UEs are also the same. Theoretically, at this time, if the spatial isolation between multiple RRHs is good, the channel correlation between UEs close to each RRH is low, and the same DMRS port may be multiplexed to increase the capacity of DMRS. However, in practical application, the spatial isolation between RRHs is difficult to be accurately controlled, and if the spatial isolation between RRHs is not ideal, then, because each UE uses the same DMRS scrambling sequence, there is still large interference between UEs, which greatly affects the demodulation performance of data thereof, thereby reducing the transmission rate. It is then necessary to configure their scrambling sequences to be different in order to reduce interference between UEs employing the same DMRS configuration.
In summary, in the prior art, the initialization values of the DMRS scrambling sequences obtained by each UE are pre-configured by the base station according to the Cell ID of the serving Cell, so that in practical applications, the UEs in different cells cannot achieve orthogonality between ports through the same DMRS scrambling sequence, and the UEs in the same Cell cannot achieve DMRS port multiplexing through different DMRS scrambling sequences.
Disclosure of Invention
The embodiment of the invention provides a method and a device for configuring a DMRS scrambling code sequence, which are used for reducing signal interference between UE (user equipment) adopting DMRS multiplexing and ensuring the signal demodulation performance of the UE.
The embodiment of the invention provides the following specific technical scheme:
a method for configuring a DMRS scrambling sequence comprises the following steps:
determining the initial value configuration of a DMRS scrambling code sequence used by UE in current transmission according to an application scene;
and jointly coding the initialization value configuration of the DMRS scrambling code sequence used by the UE and other DMRS configuration information, and then sending the coded information to the UE through a PDCCH signaling, so that the UE can obtain the corresponding DMRS scrambling code sequence according to the obtained initialization value configuration.
A method for configuring and applying a DMRS scrambling sequence comprises the following steps:
receiving an indication of joint coding of the initialization value configuration of the DMRS scrambling code sequence and other DMRS configuration information notified by a network side through PDCCH signaling, and determining the initialization value configuration of the DMRS scrambling code sequence used in current transmission according to the indication;
and according to the determined initialization value configuration of the DMRS scrambling code sequence, obtaining the corresponding DMRS scrambling code sequence.
An apparatus for configuring a DMRS scrambling sequence, comprising:
the device comprises a determining unit, a judging unit and a processing unit, wherein the determining unit is used for determining the initialization value configuration of a DMRS scrambling code sequence used by UE in current transmission according to an application scene;
and the communication unit is used for jointly coding the initialization value configuration of the determined DMRS scrambling code sequence used by the UE and other DMRS configuration information and then sending the coded information to the UE through a PDCCH signaling, so that the UE can obtain the corresponding DMRS scrambling code sequence according to the obtained initialization value configuration.
An apparatus for configuring and applying a DMRS scrambling sequence, comprising:
the communication unit is used for receiving an indication of joint coding of the initialization value configuration of the DMRS scrambling code sequence and other DMRS configuration information notified by a network side through PDCCH signaling, and determining the initialization value configuration of the DMRS scrambling code sequence used in current transmission according to the indication;
and the processing unit is used for obtaining the corresponding DMRS scrambling code sequence according to the initialization value configuration of the determined DMRS scrambling code sequence.
In the embodiment of the invention, a base station refers to a current application scene, and indicates the initialization value configuration of a downlink DMRS scrambling code sequence used in current transmission by a single UE or a UE group through signaling, so that MU-MIMO multiplexing can be flexibly carried out by the UE between cells or in the cells, the mutual interference between the multiplexed UEs is reduced, the signal demodulation performance of the UE is ensured, and meanwhile, the expenditure of a PDCCH is also reduced through joint coding.
Drawings
Fig. 1 is a schematic diagram of single-user joint transmission in the prior art;
FIG. 2 is a diagram illustrating multi-user joint transmission in the prior art;
FIG. 3 is a functional block diagram of a base station according to an embodiment of the present invention;
FIG. 4 is a functional block diagram of a UE according to an embodiment of the present invention;
fig. 5 is a flowchart of a base station configuring a DMRS scrambling sequence for a UE in an embodiment of the present invention.
Detailed Description
In order to avoid signal interference between UEs using DMRS multiplexing, in the embodiments of the present invention, a network side in the embodiments of the present invention, a base station refers to a current application scenario, and indicates, through signaling, an initialization value configuration of a downlink DMRS scrambling sequence used by the UE in current transmission, thereby ensuring that UEs between cells or within a cell can flexibly perform MU-MIMO multiplexing, and reducing mutual interference between multiplexed UEs. In this embodiment, the number of UEs indicated by the base station may be one or multiple, that is, a single UE or a UE group, which is determined according to the actual situation.
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Referring to fig. 3, in the embodiment of the present invention, the base station includes a determination unit 30 and a communication unit 31, wherein,
a determining unit 30, configured to determine, according to an application scenario, an initialization value configuration of a DMRS scrambling sequence used by the UE in current transmission;
and a communication unit 31, configured to jointly encode the initialization value configuration of the DMRS scrambling sequence used by the determined UE and other DMRS configuration information, and send the encoded initialization value configuration and other DMRS configuration information to the UE through a PDCCH signaling, so that the UE obtains the corresponding DMRS scrambling sequence according to the obtained initialization value configuration.
Referring to fig. 4, in the embodiment of the present invention, the UE includes a communication unit 40 and a processing unit 41, wherein,
a communication unit 40, configured to receive an indication that the initial value configuration of the DMRS scrambling sequence notified by the network side through the PDCCH signaling is jointly encoded with other DMRS configuration information, and determine, according to the indication, the initial value configuration of the DMRS scrambling sequence used in current transmission;
and the processing unit 41 is configured to obtain the corresponding DMRS scrambling sequence according to the determined initialization value configuration of the DMRS scrambling sequence.
Based on the above technical solution, referring to fig. 5, in the embodiment of the present invention, a detailed procedure for configuring a DMRS scrambling sequence for a UE by a base station is as follows:
step 500: and the base station indicates a DMRS scrambling code sequence initialization ID set corresponding to the UE through a high-level signaling, wherein the DMRS scrambling code sequence initialization ID set comprises an initialization ID of at least one DMRS scrambling code sequence.
In this embodiment of the present invention, the higher layer signaling adopted by the base station may be RRC (Radio resource control, RRC) signaling.
On the other hand, if the UE side is configured with the initialization ID set in advance, or the base station may not send the initialization ID set to the UE through a high-level signaling, in this embodiment of the present invention, step 500 is only an example of one case.
In this embodiment, when the UE generates the DMRS scrambling sequence, the following two ways may be adopted:
in a first mode, the DMRS scrambling sequence is generated by using the following formula:
wherein,is the maximum number of RBs in the downlink, wherein,
for the maximum number of RBs (resource blocks) in downlink, c (i) is a pseudo random sequence, and c (i) can be initialized by the following formula one or formula two:
Wherein n issIs a number of the time slot and is,
cell ID, n, of serving Cell for UESCIDIs the ID of the DMRS scrambling sequence (also called DMRS scrambling ID), is 0 or 1 (valid only when port7 and/or 8 is used, and default to 0 in other cases),
the initialization ID is the DMRS scrambling sequence indicated by the base station through high-level signaling, for example, the base station indicates the available initialization IDs of N DMRS scrambling sequences different from the Cell ID of the UE through high-level signaling.
And a second mode, generating the DMRS scrambling sequence by adopting the following formula:
wherein,
the maximum number of RBs (resource blocks) in downlink, c (i) is a pseudo random sequence, and c (i) can be initialized by the following formula three:
Wherein n issIs numbered for time slot, nSCIDIs the ID of the DMRS scrambling code sequence, the value is 0 or 1,the initialization ID of the DMRS scrambling sequence indicated by the base station through the high-level signaling, for example, the base station indicates the available initialization value IDs of N different DMRS scrambling sequences through the high-level signaling.
In this embodiment, step 500 and step 510 may be separated by a period of time, and need not be performed continuously at once.
Step 510: and the base station determines the initialization value configuration of the DMRS scrambling code sequence used by the UE in the current transmission according to the application scene.
In practical applications, when step 510 is executed, the base station may determine the initialization manner and the initialization ID configuration of the DMRS scrambling sequence used by the UE in the current transmission, or may determine only the initialization ID configuration of the DMRS scrambling sequence used by the UE in the current transmission. For example, if the base station determines that the UE performs the initialization of the DMRS scrambling sequence by using the first method, in step 510, the base station needs to determine whether the initialization method of the DMRS scrambling sequence used by the UE in current transmission is based on the first formula or the second formula, and needs to determine the initialization value ID configuration of the DMRS scrambling sequence corresponding to the initialization method based on the first formula or the second formula, and notify the UE of the information; for another example, if the base station determines that the UE performs the initialization of the DMRS scrambling sequence by using the second method, then in step 510, the base station defaults (as does the UE) that the initialization method of the DMRS scrambling sequence used by the UE in the current transmission is based on the third formula, and then the base station only needs to determine the initialization ID configuration of the DMRS scrambling sequence corresponding to the initialization method based on the third formula, and notify the UE of the information.
On the other hand, in the process of executing step 510, when the base station determines the initial value configuration of the DMRS scrambling code sequence used by the UE in the current transmission according to the application scenario, the base station may determine the initial value configuration of the DMRS scrambling code sequence used by the UE in the current transmission according to the UE scheduling condition in its own jurisdiction; the initial value configuration of the DMRS scrambling sequence used by the UE in the current transmission may also be determined according to the result of resource negotiation with the base station of another cell for the UE performing resource multiplexing (i.e., the UE).
Of course, in this embodiment, the initialization manner of the DMRS scrambling sequence used by the UE in the current transmission, which is determined by the base station, may be an initialization manner used in an existing standard (e.g., an initialization manner based on the above-mentioned formula one), or may be an initialization manner newly agreed by the base station and the UE (e.g., an initialization manner based on the above-mentioned formula two, an initialization manner based on the above-mentioned formula three); correspondingly, the initialization ID configuration of the DMRS scrambling sequence used by the UE in the current transmission, which is determined by the base station, may be an initialization ID of the DMRS scrambling sequence used in the existing system, for example, a Cell ID of a serving Cell of the UE, or an initialization ID in an initialization ID set indicated by a higher layer signaling, and in this embodiment, the latter is taken as an example for description.
Step 520: and the base station jointly codes the determined initialization value configuration of the DMRS scrambling code sequence used by the UE and other DMRS configuration information and then sends the information to the UE through a PDCCH signaling, so that the UE can obtain the corresponding DMRS scrambling code sequence according to the obtained initialization value configuration.
Therefore, after the UE receives the indication of joint coding of the initialization value configuration of the DMRS scrambling code sequence and other DMRS configuration information notified by the network side through the PDCCH signaling, the initialization value configuration of the DMRS scrambling code sequence used in current transmission can be determined according to the indication, and the corresponding DMRS scrambling code sequence is obtained according to the determined initialization value configuration of the DMRS scrambling code sequence.
In step 520, the base station may configure the initialization value of the DMRS scrambling sequence used by the UE, jointly encode the initialization value with one or any combination of the number of DMRS transmission layers, DMRS ports, and DMRS scrambling IDs, and then send the result to the UE through PDCCH signaling. Correspondingly, in the above embodiment, after combining the initialization ID set indicated by the high layer signaling and the initialization value indicated by the PDCCH signaling, the UE may generate a corresponding DMRS scrambling sequence based on the obtained initialization value configuration according to a preset initialization manner (which may be indicated by the high layer signaling sent by the base station, or may be a local default), and demodulate the signal received in the transmission according to the DMRS scrambling sequence.
In the above embodiment, the base station indicates the UE (which may be a single UE or a UE group) with the initialization ID set of its downlink DMRS scrambling sequence through a high-level signaling, and notifies the UE of the initialization value configuration used in current transmission according to the current application scenario when performing downlink transmission each time, so that the network side can flexibly select a suitable initialization value configuration of the DMRS scrambling sequence for the UE according to the actual application environment, thereby reducing mutual interference between UEs using DMRS multiplexing, further enabling multiplexing UEs in different cells to achieve signal orthogonality at DMRS ports, and enabling UEs in the same cell to achieve multiplexing of DMRS ports, effectively ensuring data transmission efficiency of the UE, and ensuring overall performance of the system.
Based on the foregoing embodiment, in this embodiment, if the UE generates the DMRS scrambling sequence in a manner, the base station may notify the UE of the initialization manner and the initialization ID configuration of the UE through DCI information carried in the PDCCH, and the specific method is: jointly encoding the initialization mode and initialization ID configuration of the UE and one or any combination of the existing 3-bit DMRS layer number, DMRS port and SCID indication information, and then sending the encoded DCI to the UE, wherein the extended DCI can be 4-5 bits, and the indication content is specifically as follows (n is not given)SCIDAll default values of the configuration of (1) are 0):
example 1: n is 2, that is, the initialization ID is configured with two values, i.e., ID1 and ID2, respectively, and the MU supports 2 layers at most, the indication content of the DCI after joint coding is shown in table 1:
TABLE 1
Example 2: n is 2, that is, the initialization ID is configured with two values, i.e., ID1 and ID2, respectively, and the MU supports up to 4 layers, the indication content of the DCI after joint coding is shown in table 2:
TABLE 2
Example 3: if N is 4, that is, the initialization ID is configured with four values, i.e., ID1, ID2, ID3, and ID4, and the MU supports 2 layers at most, the indication content of the DCI after joint encoding is shown in table 3:
TABLE 3
Example 4: if N is 4, that is, the initialization ID is configured with four values, i.e., ID1, ID2, ID3, and ID4, and the MU supports up to 3 layers, the indication content of the DCI after joint encoding is shown in table 4:
TABLE 4
Example 5: n is 4, that is, four values are configured for the initialization ID), ID1, ID2, ID3, and ID4, respectively, and the MU supports 4 layers at most, the indication content of the DCI after joint encoding is shown in table 5:
TABLE 5
Different from the foregoing embodiment, in this embodiment, if the UE generates the DMRS scrambling sequence in the second mode, the base station may notify the UE of the initialization ID configuration of the UE through DCI information carried in the PDCCH, and the specific method is: jointly encoding the initialization ID configuration of the UE and one or any combination of the existing 3-bit DMRS layer number, DMRS port and SCID indication information, and then sending the encoded information to the UE, wherein the extended DCI can be 4-5 bits, and the indication content is as follows: (n is not given)SCIDAll default values of the configuration of (1) are 0):
example 6: n is 2, that is, the initialization ID is configured with two values, i.e., ID1 and ID2, respectively, and the MU supports 2 layers at most, the indication content of the DCI after joint coding is shown in table 6:
TABLE 6
Example 7: n is 2, that is, the initialization ID is configured with two values, i.e., ID1 and ID2, respectively, and the MU supports up to 4 layers, the indication content of the DCI after joint coding is shown in table 7:
TABLE 7
Example 8: n is 4, i.e. the initialization ID is configured with four values, ID1, ID2, ID3 and ID4, respectively, which do not use NSCIDIf the MU supports 2 layers at the highest, the indication content of the DCI after joint coding is shown in table 8:
TABLE 8
Example 9: n is 4, i.e. the initialization ID is configured with four values, ID1, ID2, ID3 and ID4, respectively, which do not use NSCIDIf the MU supports 3 layers at most, the indication content of the DCI after joint coding is shown in table 9:
TABLE 9
Example 10: n is 4, i.e. the initialization ID is configured with four values, ID1, ID2, ID3 and ID4, respectively, which do not use NSCIDIf the MU supports 4 layers at most, the indication content of the DCI after joint coding is shown in table 10:
watch 10
Example 11: n is 2, i.e. the initialization ID is configured with two values, ID1 and ID2, respectively, using NSCIDIf the MU supports 2 layers at the highest, the indication content of the DCI after joint coding is shown in table 11:
TABLE 11
Example 12: n is 2, i.e. the initialization ID is configured with two values, ID1 and ID2, respectively, using NSCIDIf the MU supports 3 layers at most, the indication content of the DCI after joint coding is shown in table 12:
TABLE 12
The embodiment of the invention has wide applicability, and can be used for downlink transmission under any number of antennas, antenna arrays (such as linear arrays and polarized arrays), any duplex system (TDD system or FDD system) and any sending mode (such as SU-MIMO, MU-MIMO and CoMP). In particular, the content indexed by different DCI values may be interchanged, that is, the content indicated by a DCI value index may be interchanged with the content indicated by any other DCI value index in the same table, and the content indicated by the index does not exceed the range of the listed table, which is within the protection scope of the present patent.
In summary, in the embodiments of the present invention, a base station refers to a current application scenario, and indicates, through signaling, an initialization value configuration of a downlink DMRS scrambling sequence used in current transmission by a single UE or a UE group, so as to ensure that UEs in a cell or in a cell can flexibly perform MU-MIMO multiplexing, reduce mutual interference between multiplexed UEs, ensure signal demodulation performance of the UEs, and also reduce the overhead of a PDCCH through joint coding, in general, PDCCH signaling only needs to increase 1 bit overhead, and can flexibly support UEs in different cells to configure the same DMRS scrambling sequence, and can flexibly support UEs in the same cell to configure different scrambling sequences, thereby supporting DMRS-MIMO transmission with high rank, and effectively improving throughput of a system.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (18)
1. A method for configuring a demodulation reference signal (DMRS) scrambling sequence is characterized by comprising the following steps:
determining the initial value configuration of a DMRS scrambling code sequence used by UE in current transmission according to an application scene;
and after jointly coding the initialization value configuration of the DMRS scrambling code sequence used by the UE and other DMRS configuration information, sending the information to the UE through a Physical Downlink Control Channel (PDCCH) signaling, and enabling the UE to obtain the corresponding DMRS scrambling code sequence according to the obtained initialization value configuration.
2. The method of claim 1, wherein the determining an initialization value configuration for a DMRS scrambling sequence used by the UE in the current transmission according to the application scenario comprises:
determining an initialization mode and initialization ID configuration of a DMRS scrambling code sequence used by the UE in current transmission; or,
only the initialization ID configuration of the DMRS scrambling sequence used by the UE in the current transmission is determined.
3. The method of claim 2, wherein the initialization ID configuration of the DMRS scrambling sequence used by the UE is a cell ID of a serving cell of the UE or an initialization ID of a set of initialization IDs signaled to the UE by a higher layer signaling.
4. The method of claim 1, wherein the determining an initialization value configuration for a DMRS scrambling sequence used by the UE in the current transmission according to the application scenario comprises:
determining the initial value configuration of a DMRS scrambling code sequence used by the UE in current transmission according to the UE scheduling condition in the local jurisdiction area; or,
and determining the initialization value configuration of the DMRS scrambling code sequence used by the UE in the current transmission according to the resource negotiation result aiming at the UE by the base station of other cells.
5. The method of claim 1, wherein jointly coding the determined initialization value configuration for the DMRS scrambling sequence used by the UE with other DMRS configuration information for transmission to the UE via PDCCH signaling comprises:
and configuring the determined initialization value of the DMRS scrambling code sequence used by the UE, performing joint coding on the initialization value and one or any combination of the number of DMRS transmission layers, the DMRS port configuration and the DMRS scrambling ID, and then transmitting the initialization value to the UE through PDCCH signaling.
6. A method for configuring and applying a demodulation reference signal (DMRS) scrambling sequence is characterized by comprising the following steps:
receiving an indication of joint coding of the initialization value configuration of the DMRS scrambling code sequence and other DMRS configuration information notified by a network side through Physical Downlink Control Channel (PDCCH) signaling, and determining the initialization value configuration of the DMRS scrambling code sequence used in current transmission according to the indication;
and according to the determined initialization value configuration of the DMRS scrambling code sequence, obtaining the corresponding DMRS scrambling code sequence.
7. The method of claim 6, wherein an indication that the initialization value configuration of the DMRS scrambling sequence signaled by the PDCCH on the network side is jointly coded with other DMRS configuration information is received, and the initialization value configuration of the DMRS scrambling sequence used in current transmission is determined according to the indication, and comprises the following steps:
determining an initialization mode and initialization ID configuration of a DMRS scrambling code sequence used in current transmission according to an indication sent by a network side in a joint coding mode; or,
and according to the indication sent by the network side in a joint coding mode, only determining the initialization ID configuration of the DMRS scrambling code sequence used in the current transmission.
8. The method of claim 7, in which an initialization ID of a DMRS scrambling sequence used in the current transmission is configured as a cell ID of a serving cell or as an initialization ID in an initialization ID set obtained through higher layer signaling.
9. The method of claim 7, wherein the DMRS scrambling sequence used in the current transmission is initialized according to an initialization method adopted in an existing standard or an initialization method agreed with a network side.
10. A device for configuring a demodulation reference signal (DMRS) scrambling sequence is characterized by comprising:
the device comprises a determining unit, a judging unit and a processing unit, wherein the determining unit is used for determining the initialization value configuration of a DMRS scrambling code sequence used by UE in current transmission according to an application scene;
and the communication unit is used for jointly coding the initialization value configuration of the determined DMRS scrambling code sequence used by the UE and other DMRS configuration information and then sending the coded information to the UE through a Physical Downlink Control Channel (PDCCH) signaling, so that the UE is enabled to obtain the corresponding DMRS scrambling code sequence according to the obtained initialization value configuration.
11. The apparatus according to claim 10, wherein the determining unit determines an initialization manner and an initialization ID configuration of the DMRS scrambling sequence used by the UE in the current transmission when determining the initialization value configuration of the DMRS scrambling sequence used by the UE in the current transmission according to the application scenario; or, only determining the initialization ID configuration of the DMRS scrambling code sequence used by the UE in the current transmission.
12. The apparatus of claim 11, wherein the initialization ID configuration of the DMRS scrambling sequence used by the UE determined by the determining unit is a cell ID of a serving cell of the UE or an initialization ID in an initialization ID set notified to the UE through higher layer signaling.
13. The apparatus of claim 10, wherein the determining unit determines the initialization value configuration of the DMRS scrambling sequence used by the UE in the current transmission according to the UE scheduling condition in the local jurisdiction when determining the initialization value configuration of the DMRS scrambling sequence used by the UE in the current transmission according to the application scenario; or determining the initialization value configuration of the DMRS scrambling code sequence used by the UE in the current transmission according to the resource negotiation result of the base station of other cells aiming at the UE.
14. The apparatus of claim 10, wherein the communication unit, when the determined initialization value configuration of the DMRS scrambling sequence used by the UE is jointly encoded with other DMRS configuration information and then transmitted to the UE through PDCCH signaling, is configured to jointly encode the determined initialization value configuration of the DMRS scrambling sequence used by the UE with one or any combination of the number of DMRS transmission layers, DMRS port configuration, and DMRS scrambling ID and then transmit the encoded initialization value configuration to the UE through PDCCH signaling.
15. An apparatus for configuring and applying a demodulation reference signal (DMRS) scrambling sequence, comprising:
the communication unit is used for receiving an indication of joint coding of the initialization value configuration of the DMRS scrambling code sequence and other DMRS configuration information notified by a network side through Physical Downlink Control Channel (PDCCH) signaling, and determining the initialization value configuration of the DMRS scrambling code sequence used in current transmission according to the indication;
and the processing unit is used for obtaining the corresponding DMRS scrambling code sequence according to the initialization value configuration of the determined DMRS scrambling code sequence.
16. The apparatus of claim 15, wherein the communication unit receives an indication that the initial value configuration of the DMRS scrambling sequence signaled by the network side through the PDCCH is jointly encoded with other DMRS configuration information, and determines the initialization scheme and the initialization ID configuration of the DMRS scrambling sequence used in the current transmission according to the indication transmitted by the network side in a joint encoding scheme when determining the initial value configuration of the DMRS scrambling sequence used in the current transmission according to the indication; or, according to the indication sent by the network side in the joint coding mode, only the initialization ID configuration of the DMRS scrambling code sequence used in the current transmission is determined.
17. The apparatus of claim 16, wherein the initialization ID of the DMRS scrambling sequence used in the current transmission determined by the communication unit is configured as a cell ID of a serving cell or as an initialization ID in an initialization ID set obtained through higher layer signaling.
18. The apparatus of claim 16, wherein the DMRS scrambling sequence used by the processing unit in the current transmission is initialized according to an existing standard or an initialization agreed with a network side.
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