CN102412950A - System and method for coordinating power of downlink control channel - Google Patents
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Abstract
The invention provides a system and a method for coordinating the power of a downlink control channel, wherein the method comprises the following steps: a service base station of a terminal sends PDCCH information of the terminal to one or more adjacent base stations, the one or more adjacent base stations receiving the PDCCH information judge whether physical resources occupied by the PDCCH of the terminal conflict with physical resources occupied by a terminal served by the service base station according to the PDCCH information of the terminal, and if the physical resources conflict with the physical resources occupied by the PDCCH of the terminal, the adjacent base stations adjust the terminal occupying the physical resources conflict as follows: adjust its transmit power or adjust the physical resources it occupies. By adopting the technical scheme of the invention, the interference among the cells can be reduced, so that the receiving performance of the PDCCH is improved on the basis of not changing the interface between the UE and the eNB.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a system and a method for power coordination of a downlink control channel.
Background
With the rapid development of wireless communication technology, limited spectrum resources gradually become a main factor restricting the development of wireless communication, but the limited spectrum resources stimulate the appearance of new technology. In a wireless communication system, capacity and coverage are two important performance indexes, in order to increase the capacity, networking is performed in a same-frequency mode, but the inter-cell interference is increased by the networking in the same-frequency mode, so that the coverage performance is reduced.
In a Long Term Evolution (LTE) system, an Orthogonal Frequency Division Multiplexing Access (OFDMA) technology is used in a downlink, which can significantly reduce Interference in a Cell, but Inter-Cell Interference (ICI) is significantly increased due to the fact that a common-Frequency networking mode is often used. In order to reduce ICI, LTE also standardizes many techniques, such as Inter-Cell interference cancellation (ICIC). The Downlink ICIC technique realizes a Downlink interference pre-warning function based on a method limited by eNodeB Relative Narrowband Transmit Power (RNTP), but the method can only be used for a Physical Downlink traffic channel (PDSCH).
At present, it can be found through experimental network tests and simulations that there are problems in both capacity and coverage of a Physical Downlink Control Channel (PDCCH), because the PDCCH fills (Padding) the remaining Control Channel Elements (CCEs), so that the PDCCH is always in a full-load state in a same-frequency networking and is greatly interfered by adjacent cells, thereby reducing the receiving performance of the PDCCH. On the other hand, information such as scheduling information of the downlink shared channel is carried through the PDCCH, and if the receiving performance of the PDCCH is reduced, the performance of the entire network is severely reduced.
The PDCCH is used for carrying Downlink Control Information (DCI) of a terminal (User Equipment, UE), and specifically includes uplink scheduling Information, downlink scheduling Information, power control Information, common Information, and the like, and supports multiple DCI formats. The generation process of the DCI includes steps of information bit mapping to a physical Resource Element Group (REG) through cyclic redundancy check, coding, sub-block interleaving, rate matching, scrambling, modulation, and the like. The UE identifies (Radio Network Temporary Identifier, RNTI) its PDCCH through a Radio Network Temporary identity allocated by the Network to the UE. In order to improve the efficiency of the PDCCH, the LTE system determines four aggregation levels for transmitting the PDCCH, where the four levels are 1, 2, 4, and 8 CCEs, and obviously, the higher the level is, the more resources are required for transmitting one PDCCH channel, the more robust the coverage is, but the lower the efficiency is. At present, in order to improve the receiving performance of the PDCCH and improve the resource utilization efficiency of the PDCCH, the eNB performs equal power allocation on the PDCCH of each UE, that is, except for the power occupied by (Physical Control information Channel, PCFICH) and (Physical HARQ Indication Channel, PHICH), the remaining power is equally distributed to each CCE or REG occupied by the PDCCH, and an appropriate DCI Format and aggregation level are selected according to the length of DCI information of the UE and the Channel condition. In addition, the transmission power of the PDCCH is also adjusted according to feedback of the received signal-to-noise ratio of the UE, but interference between cells cannot be coordinated.
Therefore, no method has been found in the conventional art that can solve the problem of avoiding inter-cell interference of PDCCH.
Disclosure of Invention
The invention provides a system and a method for coordinating the power of a downlink control channel, which can reduce the interference among cells, thereby improving the receiving performance of a PDCCH (physical downlink control channel) on the basis of not changing an interface between UE (user equipment) and an eNB (evolved node B).
The invention provides a method for coordinating the power of a downlink control channel, which comprises the following steps:
a service base station of a terminal sends PDCCH information of the terminal to one or more adjacent base stations, the one or more adjacent base stations receiving the PDCCH information judge whether physical resources occupied by the PDCCH of the terminal conflict with physical resources occupied by a terminal served by the service base station according to the PDCCH information of the terminal, and if the physical resources conflict with the physical resources occupied by the PDCCH of the terminal, the adjacent base stations adjust the terminal occupying the physical resources conflict as follows: adjust its transmit power or adjust the physical resources it occupies.
Further, the PDCCH information includes time-frequency resource information occupied by the PDCCH.
Further, the PDCCH information also includes power information for transmitting the PDCCH.
Further, the time-frequency resource information occupied by the PDCCH includes: the number of OFDM symbols occupied by the PDCCH and CCE index information occupied by the PDCCH; or,
the time-frequency resource information occupied by the PDCCH comprises: the number of OFDM symbols occupied by the PDCCH, the network temporary identifier RNTI of the terminal and the aggregation level of the PDCCH.
Further, the time-frequency resource information occupied by the PDCCH further includes: number information of PHICH channels of a serving base station.
Further, the neighboring base station determines the physical resource position occupied by the PDCCH of the terminal according to the time-frequency resource information occupied by the PDCCH, and further determines the terminal which conflicts with the physical resource occupied by the terminal.
Further, the power information of the PDCCH indicates transmission power level information of the serving base station to its serving terminal, or indicates a power coordination policy of a neighboring base station;
and the adjacent base station determines a strategy for adjusting the sending power of the terminal occupying the physical resource conflict according to the power information of the PDCCH.
Further, the power information of the PDCCH is in CCE units, that is, each CCE corresponds to one power information.
Further, the adjusting, by the neighboring base station, the physical resource occupied by the terminal occupying the physical resource conflict means: and the adjacent base station reallocates the RNTI for the terminal.
The invention also provides a system for coordinating the power of the downlink control channel, which comprises two or more base stations;
the service base station of the terminal is used for sending the PDCCH information of the terminal to one or more adjacent base stations;
one or more adjacent base stations receiving the PDCCH information are used for judging whether physical resources occupied by the PDCCH of the terminal and physical resources occupied by terminals in the adjacent base stations conflict or not after receiving the PDCCH information; the neighbor base station is further configured to adjust the transmission power or occupied physical resources of the terminal served by the neighbor base station, which conflict with the terminal in terms of resources.
Further, the PDCCH information includes time-frequency resource information occupied by the PDCCH.
Further, the PDCCH information also includes power information for transmitting the PDCCH.
Further, the time-frequency resource information occupied by the PDCCH includes: the number of OFDM symbols occupied by the PDCCH and CCE index information occupied by the PDCCH; or,
the time-frequency resource information occupied by the PDCCH comprises: the number of OFDM symbols occupied by the PDCCH, the network temporary identifier RNTI of the terminal and the aggregation level of the PDCCH.
Further, the time-frequency resource information occupied by the PDCCH also includes the number information of PHICH channels of the serving base station.
Further, the neighboring base station determines the physical resource position occupied by the PDCCH of the terminal according to the received time-frequency resource information occupied by the PDCCH, and further determines the terminal which conflicts with the physical resource occupied by the terminal.
Further, the power information of the PDCCH indicates transmission power level information of the serving base station to its serving terminal, or indicates a power coordination policy of a neighboring base station;
and the adjacent base station is also used for determining a strategy for adjusting the sending power of the terminal occupying the physical resource conflict according to the power information of the PDCCH.
Further, the adjusting, by the neighboring base station, the physical resource occupied by the terminal with the resource conflict refers to: and the adjacent base station reallocates the RNTI for the terminal.
In summary, the present invention provides a system and a method for coordinating power of a downlink control channel, where an adjacent base station determines a terminal with resource conflict according to received PDCCH information, and adjusts the transmission power of the terminal with the resource conflict, so as to effectively reduce inter-cell interference, thereby improving the receiving performance of the PDCCH without changing an interface between a UE and an eNB.
Drawings
FIG. 1 is a flow chart of an embodiment of the method of the present invention;
FIG. 2 is a schematic diagram of resource occupation of PDCCHs of different cells in the present invention;
FIG. 3 is a schematic diagram of power coordination of control channels in the present invention;
FIG. 4 is a second schematic diagram illustrating power coordination of control channels in the present invention;
FIG. 5 is a third diagram illustrating power coordination of control channels in accordance with the present invention;
FIG. 6 is a fourth schematic diagram illustrating power coordination of control channels in the present invention;
FIG. 7 is a fifth schematic diagram of power coordination of control channels in the present invention.
Detailed Description
The invention provides a system and a method for coordinating the power of a downlink control channel.A service base station of a terminal sends PDCCH information of the terminal to one or more adjacent base stations, the one or more adjacent base stations receiving the PDCCH information judge whether physical resources occupied by the PDCCH of the terminal conflict with physical resources occupied by a terminal served by the terminal according to the PDCCH information of the terminal, and if so, the adjacent base stations adjust the sending power of the terminal occupying the physical resource conflict.
System embodiment
The embodiment provides a system for coordinating the power of a downlink control channel, which comprises two or more base stations;
the service base station of the terminal is used for sending the PDCCH information of the terminal to one or more adjacent base stations;
one or more adjacent base stations receiving the PDCCH information are used for judging whether physical resources occupied by the PDCCH of the terminal and physical resources occupied by terminals in the adjacent base stations conflict or not after receiving the PDCCH information; the neighbor base station is further configured to adjust the transmission power or occupied physical resources of the terminal served by the neighbor base station, which conflict with the terminal in terms of resources.
Further, the PDCCH information includes time-frequency resource information occupied by the PDCCH, and may further include power information for transmitting the PDCCH.
The time-frequency resource information occupied by the PDCCH comprises: the number of OFDM symbols occupied by the PDCCH and CCE index information occupied by the PDCCH; or, the time-frequency resource information occupied by the PDCCH includes: the number of OFDM symbols occupied by the PDCCH, the network temporary identifier RNTI of the terminal and the aggregation level of the PDCCH.
Further, the time-frequency resource information occupied by the PDCCH may further include number information of PHICH channels of the serving base station.
Further, the neighboring base station determines the physical resource position occupied by the PDCCH of the terminal of the serving base station according to the received time-frequency resource information occupied by the PDCCH.
Further, the power information of the PDCCH indicates transmission power level information of the serving base station to its serving terminal, or indicates a power coordination policy of a neighbor base station.
Further, the adjusting, by the neighboring base station, the physical resource occupied by the terminal with the resource conflict refers to: and the adjacent base station reallocates the RNTI for the terminal.
Method embodiment
In this embodiment, a serving base station of a terminal sends PDCCH information of the terminal to an adjacent base station, and if the adjacent base station determines that a REG resource occupied by the PDCCH of the terminal conflicts with a REG resource occupied by a terminal in the adjacent base station according to the PDCCH information of the terminal, the adjacent base station adjusts the sending power or the occupied physical resource of the terminal served by the adjacent base station.
As shown in fig. 1, the method of the present invention comprises the steps of:
step S101: the serving base station sends PDCCH information of the terminal to one or more adjacent base stations;
the PDCCH information comprises time-frequency resource information occupied by the PDCCH and power information for sending the PDCCH; wherein, the time-frequency resource information occupied by the PDCCH comprises: the number of OFDM symbols occupied by the PDCCH and CCE index information occupied by the PDCCH; or, the time-frequency resource information occupied by the PDCCH includes: the number of OFDM symbols occupied by the PDCCH, the network temporary identifier RNTI of the terminal and the aggregation level of the PDCCH.
The PDCCH transmission power information represents the transmission power level information of the service base station to the service terminal of the service base station, or indicates the power coordination strategy of the adjacent base station;
further, the time-frequency resource information occupied by the PDCCH sent by the serving base station may also include the number information of PHICH channels; when the number of PHICH channels occupied by the serving base station and the neighbor base station is the same, the time-frequency resource information occupied by the PDCCH may not include the number information of PHICH channels.
Step S102: and judging whether the physical resources occupied by the terminal of the service base station and the physical resources occupied by the terminal served by the adjacent base station conflict or not by the one or more adjacent base stations receiving the PDCCH information according to the PDCCH information, if so, executing the step S103, otherwise, not needing to be adjusted, and ending.
Specifically, the neighboring base station determines the physical resource (i.e., REG resource) position occupied by the PDCCH of the terminal according to the received time-frequency resource information occupied by the PDCCH, and further determines the terminal having resource occupation conflict with the terminal; and the adjacent base station also determines an adjustment strategy for the transmission power of the conflicting terminals according to the received PDCCH transmission power information.
Further, the neighboring base station determines the physical resource location occupied by the PDCCH according to the following manner:
if the number of OFDM symbols occupied by the PDCCH of the serving base station is L, L is 0, 1, 2, and 3, and when L is greater than 0, the PDCCH channel is transmitted. In L OFDM symbols, besides a PDCCH (physical Downlink control channel), a PHICH (physical uplink control channel) and a PCFICH (physical Downlink control channel) are also sent, but the PCFICH fixedly occupies 4 determined REGs in the first symbol, so that an adjacent base station can know the number of the remaining REGs (or CCEs) for transmitting the PDCCH only by acquiring the number of the L and PHICH of a serving base station, and after the adjacent base station calculates the REGs (or CCEs) for transmitting the PDCCH, and the serving base station can acquire the physical resource position of the PDCCH after knowing a CCE index occupied by the PDCCH, thereby judging which UEs in the UEs served by the adjacent base station and the PDCCH in the serving base station have resource conflict.
The PDCCH transmission power information is generated in CCE units, that is, each CCE corresponds to one power information.
Step S103: and the adjacent base station adjusts the transmission power of the terminal occupying the resource conflict or the occupied physical resource.
Further, the neighboring base station may adjust the transmission power of the terminal occupying the resource conflict according to the indication of the PDCCH transmission power.
Further, the adjusting, by the neighboring base station, the physical resource occupied by the terminal occupying the physical resource conflict means: and the adjacent base station reallocates the RNTI for the terminal.
Example one
As shown in fig. 2, a part of a mobile communication network is comprised of 7 base stations Cell 0, Cell1, Cell2, Cell 3, Cell 4, Cell 5, Cell6, and a part of mobile terminals UE: UE0, UE1, UE2, and UE3, wherein the serving base station for UE0 and UE1 is Cell 0, and the serving base station for UE2 and UE3 is Cell 2.
As shown in fig. 1, PDCCH aggregation level 2 for UE0 occupies 2 logical CCEs, and PDCCH aggregation level 4 for UE1 occupies 4 logical CCEs. The PDCCH aggregation level 2 for UE2 occupies 2 logical CCEs, and the PDCCH aggregation level 2 for UE3 occupies 2 logical CCEs. In the power coordination of the PDCCH, Cell 0 may determine the transmission power on the PDCCH of UE0 according to the channel condition of UE0, for example, the channel quality fed back by UE0, and generate PDCCH information transmitted to the neighboring base station according to the PDCCH information of UE0, including time-frequency resource information occupied by the PDCCH and power information of the transmission PDCCH, for example: cell 0 may send PDCCH transmission power information, CCE index occupied by PDCCH of UE0 to neighboring base stations Cell1, Cell2, Cell 3, and Cell 6.
In this embodiment, the PDCCH transmission power information is generated in CCE units, that is, 2 CCEs occupied by the PDCCH of UE0 correspond to 2 × n-bit transmission power information, each CCE corresponds to n bits, and the determination of n depends on the detail degree of PDCCH transmission power that Cell 0 wants to notify the neighboring base station of UE0 and the complexity of the policy of power negotiation between Cell 0 and the neighboring base station. For example: taking the level of detail of the transmission power as an example, if n is 1 bit, two transmission power states can be indicated, one indicates that the UE0 will transmit PDCCH with higher power in the future, and the other indicates that the UE0 will transmit PDCCH with lower power in the future; n-2 bits, 4 transmission power states may be represented, and the states may be represented by relatively fuzzy states, such as higher, high, lower, and low, or correspond to a certain power threshold, such as P1, P2, P3, 00 for P1 or less, 01 for P1 or less but P2 or more, 01 for P2 or less but P3 or 11 for P3 or more, and similar methods will not be described again.
Taking the policy indicating power negotiation between Cell 0 and the neighboring base station as an example, if n is 1 bit, then two power coordination policies can be indicated, where a value of 0 indicates that Cell 0 wants the neighboring base station to reduce the transmission power of the neighboring base station when sending PDCCH on the REG of the CCE occupied by UE0 as much as possible, and a value of 1 indicates that the transmission power can be increased appropriately.
A detailed schematic is given in fig. 3 in connection with the method of fig. 1. Cell 0 sends the PDCCH information of UE0 to the neighboring base station, where the neighboring base station 2 determines, according to the received PDCCH information, that there is a conflict between the REG in the CCE occupied by the PDCCH of UE2 and the REG resource in the CCE occupied by the PDCCH of UE0, and the neighboring base station 2 adjusts the PDCCH transmission power of UE2 on the basis of ensuring the reception quality of the PDCCH of UE2, for example, reduces the transmission power, thereby reducing the neighboring interference on the PDCCH of UE0, and thus improving the reception quality of the PDCCH of UE 0.
Example two:
FIG. 4 is a second schematic illustration of power coordination of control channels in the present invention;
in this embodiment, the difference from the power coordination in fig. 3 is that Cell2 determines, according to the received PDCCH information transmitted by Cell 0, that there is a conflict between REGs in CCEs occupied by PDCCHs of UE2 and UE3 and REG resources in CCEs occupied by PDCCHs of UE0, and adjusts PDCCH transmission power of UE2 and UE 3.
Description of the drawings: after a certain Cell receives the PDCCH information sent by other cells, the sending power of the PDCCH of one or more UEs may be adjusted, or may not be adjusted.
Example three:
FIG. 5 is a third diagram illustrating power coordination of control channels in accordance with the present invention;
in this embodiment, the difference from the power coordination in fig. 3 and fig. 4 is that Cell1 also determines, according to the received PDCCH information transmitted by Cell 0, that there is a conflict between REGs in the CCE occupied by the PDCCH of UE7 and REGs in the CCE occupied by the PDCCH of UE0, and adjusts the PDCCH transmission power of UE 7.
Description of the drawings: when a plurality of cells receive PDCCH information sent by a certain Cell, one or more cells in the plurality of cells may adjust the sending power of the PDCCH of the serving UE, or none of the cells that receive the PDCCH information may adjust.
Example four:
FIG. 6 is a fourth schematic diagram illustrating power coordination of control channels in the present invention;
in this embodiment, the difference with the power coordination in fig. 3 and fig. 4 and 5 is that
In Cell 0, PDCCH information of UE0 and UE1 is transmitted to a neighboring Cell, and PDCCH information of UE0 and PDCCH information of UE1 are transmitted to different neighboring cells. Specifically, PDCCH information of UE0 is transmitted to Cell 5, Cell6, and PDCCH information of UE1 is transmitted to Cell1, Cell2, and Cell 3. Wherein,
cell2 determines that there is a conflict between REGs in CCE occupied by PDCCH of UE2 and REGs in CCE occupied by PDCCH of UE1 according to PDCCH information of UE1 transmitted by Cell 0, and adjusts PDCCH transmission power of UE 2.
Cell1 also determines that there is a resource conflict between REGs in CCE occupied by PDCCH of UE8 and REGs in CCE occupied by PDCCH of UE1 according to PDCCH information of UE1 transmitted by Cell 0, and adjusts PDCCH transmission power of UE 8.
And, instead,
Description of the drawings: the Cell may send the PDCCH of one or more UEs to the neighbor Cell, and the neighbor Cell adjusts the transmission power of the PDCCH of the serving UE according to the PDCCH channel condition of the UE it serves.
Example five:
FIG. 7 is a fifth schematic diagram illustrating power coordination of control channels in the present invention;
in this embodiment, the difference in power coordination with fig. 3, 4, 5 and 6 is that:
in Cell 0, the PDCCH information of UE0 and UE1 is transmitted to the neighboring cells, and the PDCCH information of UE0 and the PDCCH information of UE1 are transmitted to different neighboring cells, and one Cell receives the PDCCH information of a plurality of UEs. Specifically, PDCCH information of UE0 is transmitted to Cell1, Cell 5, and Cell6, and PDCCH information of UE1 is transmitted to Cell1, Cell2, and Cell 3. Among them, Cell1 receives PDCCH information of UE0 and UE 1. And:
cell1 also determines that there is a conflict between REG in CCE occupied by PDCCH of UE7 and UE8 and REG resource in CCE occupied by PDCCH of UE0 and UE1 according to the received PDCCH information of UE0 and UE1 transmitted by Cell 0, and adjusts the PDCCH transmission power of UE7 and UE 8.
Description of the drawings: the Cell may send the PDCCH of one or more UEs to the same neighbor Cell, and the neighbor Cell adjusts the transmission power of the PDCCH of the serving UE according to the PDCCH channel condition of the UE served by the neighbor Cell.
In various embodiments, when the serving base station and the neighboring base station have a REG resource collision, in addition to performing power adjustment, the neighboring base station may adjust the PDCCH physical resource location of the UE served by the neighboring base station, for example, by reassigning one RNTI to the UE, because the resource location of the PDCCH is related to the RNTI.
The Cell in the present invention may be a base station, a home base station, a relay station, or other devices, or may be a communication terminal, a notebook computer, a handheld computer, or other devices. Similarly, the UE is configured to receive a data signal from a sending end, where the receiving end may be a terminal device such as a mobile phone, a notebook computer, or a handheld computer, and may also be a control device such as a base station or a relay station.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalents, improvements, etc. that are within the spirit and principle of the present invention should be included in the present invention.
Claims (17)
1. A method for coordinating the power of a downlink control channel comprises the following steps:
a service base station of a terminal sends PDCCH information of the terminal to one or more adjacent base stations, the one or more adjacent base stations receiving the PDCCH information judge whether physical resources occupied by the PDCCH of the terminal conflict with physical resources occupied by a terminal served by the service base station according to the PDCCH information of the terminal, and if the physical resources conflict with the physical resources occupied by the PDCCH of the terminal, the adjacent base stations adjust the terminal occupying the physical resources conflict as follows: adjust its transmit power or adjust the physical resources it occupies.
2. The method of claim 1, wherein:
the PDCCH information comprises time-frequency resource information occupied by the PDCCH.
3. The method of claim 2, wherein:
the PDCCH information also includes power information for transmitting the PDCCH.
4. The method of claim 2, wherein:
the time-frequency resource information occupied by the PDCCH comprises: the number of OFDM symbols occupied by the PDCCH and CCE index information occupied by the PDCCH; or,
the time-frequency resource information occupied by the PDCCH comprises: the number of OFDM symbols occupied by the PDCCH, the network temporary identifier RNTI of the terminal and the aggregation level of the PDCCH.
5. The method of claim 4, wherein:
the time-frequency resource information occupied by the PDCCH further comprises: number information of PHICH channels of a serving base station.
6. The method of claim 4 or 5, wherein:
and the adjacent base station determines the physical resource position occupied by the PDCCH of the terminal according to the time-frequency resource information occupied by the PDCCH, and further determines the terminal which conflicts with the physical resource occupied by the terminal.
7. The method of claim 3, wherein:
the power information of the PDCCH represents the sending power level information of the service base station to the service terminal of the service base station, or indicates the power coordination strategy of the adjacent base station;
and the adjacent base station determines a strategy for adjusting the sending power of the terminal occupying the physical resource conflict according to the power information of the PDCCH.
8. The method of claim 7, wherein:
the power information of the PDCCH is in CCE units, that is, each CCE corresponds to one power information.
9. The method of claim 2, wherein:
the adjusting, by the neighboring base station, the physical resource occupied by the terminal occupying the physical resource conflict means: and the adjacent base station reallocates the RNTI for the terminal.
10. A system for coordinating the power of downlink control channel includes two or more base stations; the method is characterized in that:
the service base station of the terminal is used for sending the PDCCH information of the terminal to one or more adjacent base stations;
one or more adjacent base stations receiving the PDCCH information are used for judging whether physical resources occupied by the PDCCH of the terminal and physical resources occupied by terminals in the adjacent base stations conflict or not after receiving the PDCCH information; the neighbor base station is further configured to adjust the transmission power or occupied physical resources of the terminal served by the neighbor base station, which conflict with the terminal in terms of resources.
11. The system of claim 10, wherein:
the PDCCH information comprises time-frequency resource information occupied by the PDCCH.
12. The system of claim 11, wherein:
the PDCCH information also includes power information for transmitting the PDCCH.
13. The system of claim 12, wherein:
the time-frequency resource information occupied by the PDCCH comprises: the number of OFDM symbols occupied by the PDCCH and CCE index information occupied by the PDCCH; or,
the time-frequency resource information occupied by the PDCCH comprises: the number of OFDM symbols occupied by the PDCCH, the network temporary identifier RNTI of the terminal and the aggregation level of the PDCCH.
14. The system of claim 13, wherein:
the time-frequency resource information occupied by the PDCCH also comprises the number information of PHICH channels of a service base station.
15. The system of claim 13 or 14, wherein:
and the adjacent base station determines the physical resource position occupied by the PDCCH of the terminal according to the received time-frequency resource information occupied by the PDCCH, and further determines the terminal which conflicts with the physical resource occupied by the terminal.
16. The system of claim 12, wherein:
the power information of the PDCCH represents the sending power level information of the service base station to the service terminal of the service base station, or indicates the power coordination strategy of the adjacent base station;
and the adjacent base station is also used for determining a strategy for adjusting the sending power of the terminal occupying the physical resource conflict according to the power information of the PDCCH.
17. The system of claim 11, wherein:
the adjusting, by the neighboring base station, the physical resource occupied by the terminal having the resource conflict means: and the adjacent base station reallocates the RNTI for the terminal.
Priority Applications (2)
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| CN2011103616261A CN102412950A (en) | 2011-11-15 | 2011-11-15 | System and method for coordinating power of downlink control channel |
| PCT/CN2012/072176 WO2013071719A1 (en) | 2011-11-15 | 2012-03-12 | System, method and base station for coordinating power of downlink control channel |
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| CN2011103616261A CN102412950A (en) | 2011-11-15 | 2011-11-15 | System and method for coordinating power of downlink control channel |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103428640A (en) * | 2012-05-23 | 2013-12-04 | 中兴通讯股份有限公司 | Power distribution method and device based on eMBMS trunking system down link |
| WO2014015728A1 (en) * | 2012-07-24 | 2014-01-30 | 电信科学技术研究院 | Method and system for assigning c-rnti |
| CN103650611A (en) * | 2013-09-06 | 2014-03-19 | 华为技术有限公司 | Information-sending control method and device |
| CN104717748A (en) * | 2013-12-11 | 2015-06-17 | 北京三星通信技术研究有限公司 | Physical downlink control channel (PDCCH) resource allocation method and device |
| CN109041118A (en) * | 2017-06-08 | 2018-12-18 | 大唐移动通信设备有限公司 | A kind of resource allocation methods and communication equipment |
| CN111264043A (en) * | 2017-10-26 | 2020-06-09 | 高通股份有限公司 | Resource element group mapping for downlink control channel |
| CN113271684A (en) * | 2020-02-14 | 2021-08-17 | 维沃移动通信有限公司 | Side link transmission control method, sending terminal and receiving terminal |
| WO2023201495A1 (en) * | 2022-04-18 | 2023-10-26 | 北京小米移动软件有限公司 | Method and apparatus for receiving physical downlink control channel, and method and apparatus for sending physical downlink control channel |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103428640B (en) * | 2012-05-23 | 2018-05-01 | 中兴通讯股份有限公司 | Power distribution method and device based on eMBMS group system downlinks |
| CN103428640A (en) * | 2012-05-23 | 2013-12-04 | 中兴通讯股份有限公司 | Power distribution method and device based on eMBMS trunking system down link |
| WO2014015728A1 (en) * | 2012-07-24 | 2014-01-30 | 电信科学技术研究院 | Method and system for assigning c-rnti |
| CN103582132A (en) * | 2012-07-24 | 2014-02-12 | 电信科学技术研究院 | C-RNTI distribution method and system |
| CN103650611A (en) * | 2013-09-06 | 2014-03-19 | 华为技术有限公司 | Information-sending control method and device |
| CN103650611B (en) * | 2013-09-06 | 2017-06-06 | 华为技术有限公司 | Information sending control method and device |
| CN104717748A (en) * | 2013-12-11 | 2015-06-17 | 北京三星通信技术研究有限公司 | Physical downlink control channel (PDCCH) resource allocation method and device |
| CN109041118A (en) * | 2017-06-08 | 2018-12-18 | 大唐移动通信设备有限公司 | A kind of resource allocation methods and communication equipment |
| CN109041118B (en) * | 2017-06-08 | 2020-11-20 | 大唐移动通信设备有限公司 | Resource allocation method and communication equipment |
| CN111264043A (en) * | 2017-10-26 | 2020-06-09 | 高通股份有限公司 | Resource element group mapping for downlink control channel |
| CN111264043B (en) * | 2017-10-26 | 2022-06-17 | 高通股份有限公司 | Resource element group mapping for downlink control channel |
| CN113271684A (en) * | 2020-02-14 | 2021-08-17 | 维沃移动通信有限公司 | Side link transmission control method, sending terminal and receiving terminal |
| WO2023201495A1 (en) * | 2022-04-18 | 2023-10-26 | 北京小米移动软件有限公司 | Method and apparatus for receiving physical downlink control channel, and method and apparatus for sending physical downlink control channel |
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