WO2016054933A1 - 设备到设备干扰协调方法、装置及基站、用户设备 - Google Patents

设备到设备干扰协调方法、装置及基站、用户设备 Download PDF

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Publication number
WO2016054933A1
WO2016054933A1 PCT/CN2015/082231 CN2015082231W WO2016054933A1 WO 2016054933 A1 WO2016054933 A1 WO 2016054933A1 CN 2015082231 W CN2015082231 W CN 2015082231W WO 2016054933 A1 WO2016054933 A1 WO 2016054933A1
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Prior art keywords
transmission
base station
power information
transmit power
resource
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PCT/CN2015/082231
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English (en)
French (fr)
Inventor
褚丽
陈琳
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中兴通讯股份有限公司
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Priority to US15/518,033 priority Critical patent/US20170318592A1/en
Publication of WO2016054933A1 publication Critical patent/WO2016054933A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0027—Scheduling of signalling, e.g. occurrence thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/243—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account interferences
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/38—TPC being performed in particular situations
    • H04W52/383—TPC being performed in particular situations power control in peer-to-peer links
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/27—Control channels or signalling for resource management between access points
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0473—Wireless resource allocation based on the type of the allocated resource the resource being transmission power
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/005—Discovery of network devices, e.g. terminals

Definitions

  • the present invention relates to the field of communications, and in particular, to a device-to-device interference coordination method and apparatus, and a base station and a user equipment.
  • D2D Device-to-Device
  • D2D technology can work in licensed or unlicensed bands, allowing multiple D2D-enabled user equipment (D2D User Equipment, D2D UE) to directly discover without network infrastructure or network infrastructure. / Direct communication.
  • D2D User Equipment D2D User Equipment
  • D2D UE D2D User Equipment
  • UE1 and UE2 perform data interaction under the coverage of the cellular network, and the user plane data does not pass through the network infrastructure, as shown in mode 1 of FIG. 1;
  • UE relay transmission in the weak/uncovered area allows UE4 with poor signal quality to communicate with the network through UE3 with network coverage nearby, which can help operators expand coverage and increase capacity. ;
  • D2D technology usually includes D2D discovery technology and D2D communication technology:
  • D2D discovery technology refers to determining/determining the proximity between two or more D2D user equipments (for example, within a range in which D2D direct communication is possible) or for determining/determining that a first user equipment is adjacent to a second user.
  • Equipment technology refers to determining/determining the proximity between two or more D2D user equipments (for example, within a range in which D2D direct communication is possible) or for determining/determining that a first user equipment is adjacent to a second user.
  • D2D communication technology refers to a technology in which some or all of the communication data between D2D user equipments can communicate directly without going through the network infrastructure.
  • the D2D UE Before performing D2D discovery or D2D communication, the D2D UE needs to obtain corresponding radio resources first.
  • the base station allocates a dedicated resource (second resource allocation mode) to the UE for D2D discovery/communication.
  • the first resource allocation mode is usually pre-allocated by the base station or the system to a D2D resource pool, and the D2D UE participating in the D2D discovery/communication listens to the resource pool and obtains the D2D transmission resource in a competitive manner.
  • This method is mainly used for cellular network coverage.
  • the external D2D UE can also be used for D2D UEs within the cellular network coverage.
  • D2D UEs within a cellular network coverage they may use a D2D contention resource pool configured for the served cell.
  • a pre-configured D2D contention pool can be used.
  • the second resource allocation mode is configured by the base station to allocate appropriate D2D resources to the D2D UE according to the request of the D2D UE, and the manner can only be used for the D2D UE located in the coverage of the cellular network.
  • a D2D resource pool can be obtained from the base station.
  • the D2D UE can then compete for the selected resource from the resource pool for D2D transmission.
  • D2D transmission shares resources with cellular transmission, and D2D resources between adjacent cells may be the same or different.
  • UE1 and UE2 are under the base station eNB1, and UE3, UE4, and UE5 are under the base station eNB2, and these UEs are all in the edge area of the corresponding cell.
  • UE1 performs D2D transmission (refers to D2D discovery or D2D communication signal transmission) under eNB1, UE2 and UE3 are performing corresponding D2D monitoring or reception; UE4 performs D2D transmission under eNB2, and UE5 is performing corresponding D2D monitoring on it. Or receive.
  • eNB1 and eNB1 allocate the same D2D resources to UE1 and UE4, the D2D transmissions of the two may interfere with each other, and if UE3 wants to listen or receive the D2D transmissions of UE1 and UE4, The D2D resources conflict, and for a UE with only half-duplex capability, normal listening or receiving is not possible.
  • the UE4 has cellular transmission, if the cellular transmission resource allocated by the eNB2 to the UE4 is the same as the D2D transmission resource allocated by the eNB1 to the UE1, the cellular transmission of the UE4 and the D2D transmission of the UE1 may interfere with each other.
  • D2D transmission generally uses the uplink resources of the existing cellular communication, so the interference of the D2D transmission and the cellular transmission mainly refers to the interference with the cellular uplink transmission. If the D2D transmission also uses the downlink resources of the existing cellular communication, interference may also occur between the D2D transmission and the cellular downlink transmission.
  • interference coordination based on power limitation is performed through interaction between cells, and the main methods are as follows:
  • Relative Narrowband Tx Power (RNTP) mechanism Provides downlink power limits for each resource block (RB) and other information for neighboring area coordination scheduling for neighboring base stations in the form of a list. .
  • the bitmap indicates whether the corresponding downlink RB will exceed the RNTP threshold for a period of time in the future.
  • the corresponding RNTP threshold values are also provided in the list.
  • the D2D transmission resource and the cellular transmission resource load degree are different, and the strategy and priority of the D2D transmission and the cellular transmission are different according to the actual application, there will be a difference in the corresponding interference processing and scheduling. Different considerations. Therefore, for the interference or resource conflict caused by D2D transmission between the above cells, a targeted solution is needed, otherwise the effect of D2D transmission and cellular transmission will be greatly affected, resulting in a decrease in reception performance and a serious impact on correlation. User experience of the business.
  • the present invention provides a device-to-device interference coordination method and apparatus, and a base station and a user equipment, to at least solve the problem that the D2D transmission and the reception performance of the cellular transmission are degraded due to interference or resource collision caused by D2D transmission between cells.
  • a device-to-device (D2D) interference coordination method including: acquiring, by a base station, D2D transmission transmit power information, where the D2D transmission transmit power information is used to indicate a corresponding radio resource. Transmit power of the scheduled D2D transmission, or power information indicating interference to the D2D transmission on the corresponding radio resource; the base station performs interference coordination processing according to the D2D transmission transmit power information.
  • D2D device-to-device
  • the acquiring, by the base station, the D2D transmission transmit power information includes: receiving, by the base station, the D2D transmission transmit power information sent by a user equipment (UE) or a neighboring base station; and/or generating, by the base station, according to interference status of the radio resource.
  • the D2D transmission transmit power information is described.
  • the D2D transmission transmit power information includes information of at least one of: an effective time indicating D2D transmission transmit power information or a duration of the D2D transmission, a group identity of the D2D transmission, and a priority of the D2D transmission. Level, resource information corresponding to the D2D transmission.
  • performing interference coordination processing according to the D2D transmission transmit power information includes at least one of: the base station performing power limitation adjustment or resource scheduling adjustment on the D2D transmission according to the D2D transmission transmit power information; Transmitting the D2D transmission transmit power information to a neighboring base station of the base station; the base station transmitting the D2D transmission transmit power information to a processing center.
  • the determining, by the base station, the resource scheduling adjustment for the D2D transmission according to the D2D transmission transmit power information that: the base station determines, according to the D2D transmission transmit power information, whether the transmit power of the D2D transmission exceeds a first pre-predetermined Setting a value, or determining a level of the transmit power of the D2D transmission; if the base station transmits the power of the D2D transmission exceeding a first preset value, or the transmit power level of the D2D transmission is higher than a preset level , preferentially scheduling cellular transmission or D2D transmission that is not easy to interfere with the cell on the corresponding radio resource, or not scheduling any transmission.
  • the base station performing power limitation adjustment on the D2D transmission according to the D2D transmission and transmit power information, and the base station transmits the transmit power information according to the D2D transmission. Determining whether the power causing interference to the D2D transmission exceeds a second preset value, or determining whether a power expected by the D2D transmission exceeds a third preset value; and the base station is causing interference to the D2D transmission If the second preset value is exceeded, or the power expected by the D2D transmission exceeds a third preset value, the power limit value of the D2D transmission is increased, and the D2D transmission is scheduled to be less interfered by the wireless Resources.
  • the base station performs resource scheduling adjustment for the D2D transmission according to the D2D transmission transmit power information, where the base station is in the In the case where the priority of the D2D transmission is higher than the second preset value, only the cell transmission/D2D transmission of the cell center UE is scheduled on the radio resource corresponding to the D2D transmission transmission power information, or the transmission with lower power or not Scheduling the transmission of any UE; and/or the base station scheduling the transmission or power of the cell center on the radio resource of the D2D transmission if the priority of the D2D transmission is not higher than the second preset value The transmission or the higher priority transmission of the edge UE.
  • the base station performs power limitation adjustment or resource scheduling adjustment on the D2D transmission according to the D2D transmission transmit power information, where The base station only schedules cellular transmission/D2D transmission or low power transmission of the cell center UE on the radio resource corresponding to the D2D transmission transmit power information during the duration of the D2D transmission or Not scheduling the transmission of any UE or not scheduling the lower priority transmission of the UE; and/or the base station scheduling the cell edge on the radio resource corresponding to the D2D transmission transmission power information after the duration of the D2D transmission Transmission of the UE.
  • the transmitting, by the base station, the D2D transmission transmit power information to the neighboring base station of the base station includes: the base station transmitting transmit power information according to the D2D, and/or D2D resource information of the neighboring base station, Determining a possible interferer cell/base station; the base station transmitting the D2D transmission transmit power information to the determined possible interferer cell/base station.
  • the processing center comprises at least one of: an Operation Maintenance Management Entity (OAM), a Mobility Management Entity (MME), or a centralized information center.
  • OAM Operation Maintenance Management Entity
  • MME Mobility Management Entity
  • centralized information center e.g., a centralized information center.
  • the radio resource corresponding to the D2D transmission and transmission power information is in units of D2D transmission resource units, or in units of D2D communication resource units, or in units of D2D scheduling resource units, or in units of D2D discovery resource units. Or in units of physical resource blocks (PRBs).
  • PRBs physical resource blocks
  • the length of the bitmap corresponding to the D2D discovery/D2D communication and the discovery resource or the scheduling allocation (SA) resource or the data PRB included in the D2D resource is the same.
  • the D2D resource of the cell of the base station is divided into a part of the cell center UE for D2D transmission or D2D transmission of the lower power UE and a part of the cell edge UE for D2D transmission or D2D transmission of the higher power UE.
  • the length of the bitmap is the same as the number of D2D transmission resources of the D2D transmission or the higher power UE for the cell edge UE.
  • the block information of the D2D resource is configured by interaction between adjacent cells, or is configured by OAM.
  • the D2D transmission transmit power information and the interference state information of the existing cellular resource are uniformly indicated in one information unit (IE), or are separately indicated.
  • IE information unit
  • the D2D transmission transmit power information reuses the overload indication information or is indicated by a new information unit.
  • the D2D transmission transmit power information is carried in an X2 (Interconnect Base Station Interconnect) load information message.
  • X2 Interconnect Base Station Interconnect
  • a device-to-device (D2D) interference coordination method comprising: a user equipment UE transmitting, to indicate a transmit power of a D2D transmission to be scheduled on a corresponding radio resource, or Determining D2D transmission transmit power information of power information that interferes with the D2D transmission on a corresponding radio resource to the base station, wherein the D2D transmission transmit power information is used to instruct the base station to perform interference coordination processing.
  • D2D interference coordination method comprising: a user equipment UE transmitting, to indicate a transmit power of a D2D transmission to be scheduled on a corresponding radio resource, or Determining D2D transmission transmit power information of power information that interferes with the D2D transmission on a corresponding radio resource to the base station, wherein the D2D transmission transmit power information is used to instruct the base station to perform interference coordination processing.
  • the D2D transmission transmit power information includes information of at least one of: an effective time indicating D2D transmission transmit power information or a duration of the D2D transmission, a group identity of the D2D transmission, and a priority of the D2D transmission. Level, resource information corresponding to the D2D transmission.
  • the UE triggers sending the D2D transmission transmit power information to the base station by using one of the following: event triggering, periodic reporting, and timer triggering.
  • the event triggering includes at least one of the following: the UE detects an interference or a resource conflict of the D2D transmission; and the UE receives the report that the base station instructs the UE to report the D2D transmission transmit power information. Request; the UE has a D2D transmission resource requirement or a D2D signal or data to be transmitted.
  • the periodic reporting includes: the UE collects the D2D interference level corresponding to each resource granularity, and periodically reports the average of the D2D interference levels.
  • the resource unit of the resource granularity includes at least one of the following: a D2D discovery resource unit, or a scheduling allocation (SA) resource unit, or a data resource unit, or a PRB.
  • SA scheduling allocation
  • the sending, by the UE, the D2D transmission transmit power information to the base station comprises: the UE adopting terminal assistance information, a measurement report, a Radio Resource Control Protocol (RRC) connection establishment, tracking one of the area update request processes, or a new The message reports the D2D transmission transmit power information.
  • RRC Radio Resource Control Protocol
  • a device-to-device (D2D) interference coordination apparatus which is applied to a base station, and includes: an acquiring module, configured to acquire D2D transmission transmit power information, where the D2D transmission and transmission are performed.
  • the power information is used to indicate the transmit power of the D2D transmission to be scheduled on the corresponding radio resource, or the power information indicating the interference on the D2D transmission on the corresponding radio resource;
  • the coordination module is configured to transmit according to the D2D transmission Power information for interference coordination processing.
  • the coordination module includes at least one of: a scheduling unit configured to perform power limitation adjustment or resource scheduling adjustment for the D2D transmission according to the D2D transmission transmit power information; a first sending unit configured to: The D2D transmission transmit power information is sent to the neighboring base station of the base station; and the second sending unit is configured to send the D2D transmission transmit power information to the processing center.
  • a scheduling unit configured to perform power limitation adjustment or resource scheduling adjustment for the D2D transmission according to the D2D transmission transmit power information
  • a first sending unit configured to: The D2D transmission transmit power information is sent to the neighboring base station of the base station
  • the second sending unit is configured to send the D2D transmission transmit power information to the processing center.
  • the scheduling unit includes: a first determining subunit, configured to determine, according to the D2D transmission transmit power information, whether the transmit power of the D2D transmission exceeds a first preset value, or determine the transmission of the D2D transmission a level of power; a scheduling subunit, configured to prioritize on a corresponding radio resource if the transmit power of the D2D transmission exceeds a first preset value, or the transmit power level of the D2D transmission is higher than a preset level Scheduling cellular transmissions or D2D transmissions that do not easily interfere with the cell, or not scheduling any transmissions.
  • the scheduling unit includes: a second determining subunit, configured to determine, according to the D2D transmission transmit power information, whether a power causing interference to the D2D transmission exceeds a second preset value, or determine the D2D transmission Whether the desired power exceeds a third preset value; the processing subunit is configured to exceed a second preset value in a power that causes interference to the D2D transmission, or the power expected by the D2D transmission exceeds a third preset value In case, the power limit value of the D2D transmission is increased, and the D2D transmission is scheduled to a radio resource that is less interfered.
  • the first sending unit includes: a third determining subunit, configured to determine a possible interference source cell/base station according to the D2D transmission transmit power information and/or the D2D resource information of the neighboring base station; A transmitting subunit is arranged to transmit the D2D transmission transmit power information to the determined possible interferer cell/base station.
  • the acquiring module includes: a receiving unit, configured to receive the D2D transmission transmit power information sent by the UE or the neighboring base station; and/or a generating unit, configured to generate the D2D transmission according to the interference condition of the radio resource Transmit power information.
  • a device-to-device (D2D) interference coordination apparatus which is applied to a user equipment, and includes: a sending module, configured to send, to indicate that scheduling is to be performed on a corresponding radio resource. Transmit power of the D2D transmission, or D2D transmission transmit power information indicating power information causing interference to the D2D transmission on a corresponding radio resource, where the D2D transmission transmit power information is used to indicate that the base station performs interference Coordinated processing.
  • D2D device-to-device
  • a base station including: the D2D interference coordination apparatus applied to the base station.
  • a user equipment including: the D2D interference coordination apparatus applied to the user equipment.
  • the D2D transmission transmit power information is used by the base station, where the D2D transmission transmit power information is used to indicate the transmit power of the scheduled D2D transmission on the corresponding radio resource, or to indicate the D2D on the corresponding radio resource. Transmitting power information causing interference; the base station transmits a transmit power signal according to D2D
  • the method of performing interference coordination processing solves the problem that D2D transmission and the reception performance of the cellular transmission are degraded due to interference or resource collision caused by D2D transmission between cells, thereby improving reception performance and thereby improving user experience.
  • FIG. 1 is a schematic structural diagram of a D2D transmission network according to the related art
  • FIG. 2 is a schematic diagram of a scenario of coexistence of D2D transmission and cellular transmission between adjacent cells according to the related art
  • FIG. 3 is a schematic flow chart of a D2D interference coordination method according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a D2D interference coordination apparatus according to an embodiment of the present invention.
  • FIG. 5 is a first schematic structural diagram 1 of a D2D interference coordination apparatus according to an embodiment of the present invention.
  • FIG. 6 is a second schematic structural diagram of a D2D interference coordination apparatus according to an embodiment of the present invention.
  • FIG. 7 is a third schematic structural diagram of a D2D interference coordination apparatus according to an embodiment of the present invention.
  • FIG. 8 is a fourth schematic structural diagram of a D2D interference coordination apparatus according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram 5 of a preferred structure of a D2D interference coordination apparatus according to an embodiment of the present invention.
  • FIG. 3 is a schematic flowchart of a D2D interference coordination method according to an embodiment of the present invention. As shown in FIG. 3, the process includes the following steps:
  • Step S302 the base station acquires D2D transmission transmit power information, where the D2D transmission transmit power information is used to indicate the transmit power of the scheduled D2D transmission on the corresponding radio resource, or to indicate that the D2D transmission is interfered on the corresponding radio resource.
  • Power information is used to indicate the transmit power of the scheduled D2D transmission on the corresponding radio resource, or to indicate that the D2D transmission is interfered on the corresponding radio resource.
  • Step S304 the base station performs interference coordination processing according to the D2D transmission transmit power information.
  • the method for transmitting D2D transmission transmit power information to the base station is adopted, so that the base station can coordinate the transmission of the base station according to the transmit power of the D2D transmission to be scheduled, and solve the interference or resource conflict caused by the D2D transmission between the cells.
  • the problem of degraded reception performance of D2D transmission and cellular transmission improves the reception performance and the quality of D2D communication service, thereby improving the user experience.
  • the information indicates power information that causes interference to the D2D transmission or D2D transmission transmission power information that is scheduled on the corresponding resource for a period of time in the future.
  • the information indicates whether the transmit power of the D2D transmission exceeds a certain threshold or a level indicating the transmit power of the D2D transmission, such as high, medium, and low.
  • a certain threshold or a level indicating the transmit power of the D2D transmission such as high, medium, and low.
  • the corresponding threshold values can be supplied together, either by default configuration or by other means, with only a threshold index or a fixed default value.
  • the transmit power information of the D2D transmission includes one of the following information: time, group number of the D2D transmission, priority, resource information corresponding to the D2D transmission, and the like.
  • the time indicates the effective time of the transmit power of the D2D transmission or the duration of the D2D transmission.
  • the neighboring base station after receiving the power information of the D2D transmission, performs corresponding interference coordination according to the information. For example, when the transmit power exceeds a certain threshold or the power level is high, the neighboring base station does not try to schedule cellular transmission or D2D transmission susceptible to the D2D transmission interference on the resource, such as UE-related transmission at the cell edge. Or a higher power transmission. For example, when the transmit power does not exceed a certain threshold or the power level is low, the neighboring base station tries to schedule cellular transmission or D2D transmission on the resource that is not easy to interfere with the D2D transmission, such as UE related in the cell center. Transmission or transmission with lower power.
  • the neighboring base station after receiving the power information of the D2D transmission, performs corresponding interference coordination according to the group number or priority of the D2D transmission in the information. For example, when the priority of the D2D transmission is high, the base station only schedules cellular transmission/D2D transmission or lower power transmission of the cell center UE or does not schedule transmission of any UE or UE on the corresponding resource of the power information of the D2D transmission. Low priority transmission. When the priority is low, the base station schedules a higher priority transmission of the cell center or the edge UE on the corresponding resource of the power information of the D2D transmission.
  • the neighboring base station after receiving the power information of the D2D transmission, performs corresponding interference coordination according to the time information of the D2D transmission in the information. For example, during the corresponding duration of D2D transmission, the base station transmits in D2D. Only the cell transmission/D2D transmission or the lower power transmission of the cell center UE or the transmission of any UE or the low priority transmission of the UE are scheduled on the corresponding resources of the power information. After the corresponding time, the transmission of the cell edge UE can be scheduled.
  • the power information for providing the D2D transmission may be a D2D transmission resource unit, a D2D communication resource unit, a D2D scheduling allocation resource unit, or a D2D discovery resource unit, or in units of PRBs.
  • different bitmaps can be further distinguished for D2D discovery/D2D communication, the respective lengths of which are the same as the discovery resources/SA resources/data PRBs included in the D2D resources.
  • the power information of the D2D transmission is indicated only on the D2D resource or the D2D resource allocated to the cell edge UE.
  • the D2D resource of the cell is divided into blocks, and the D2D transmission is used by the cell center UE for D2D transmission or the D2D transmission of the lower power UE, and the D2D transmission is used for the cell edge UE or the D2D transmission of the UE with higher power.
  • the power information transmitted by the D2D only indicates the D2D transmission power information of the latter. That is, the bit map length is the same as the number of D2D transmission resources of the D2D transmission or the higher power UE used for the cell edge UE.
  • the D2D resource partitioning information may be exchanged between adjacent cells or configured by OAM.
  • the power information of the D2D transmission may be uniformly indicated in an IE with the power information of the existing cellular transmission, or may be separately indicated.
  • the indication is unified, it is also necessary to indicate which power information corresponds to the D2D transmission.
  • the D2D resource (pool) information is also sent to the neighboring cell through the interaction between neighboring cells or OAM configuration.
  • the neighboring area can learn the power information of the corresponding D2D transmission according to the information combined with the unified transmission power information.
  • the base station should ignore the transmission power information corresponding to the D2D resources in the received power information of the existing cellular transmission.
  • the power information of the D2D transmission is reused by an existing Relative Narrowband Tx Power Information Element (IE) or indicated by a new IE.
  • IE Relative Narrowband Tx Power Information Element
  • a corresponding D2D identifier may be added to indicate that the information is power information of the D2D transmission.
  • the power information transmitted by the D2D is carried in an X2 Load Information message.
  • the power information of the D2D transmission is summarized or shared to the neighboring base station by means of OAM or reporting to the MME and the centralized information center.
  • the power information of the D2D transmission is collected by OAM, or summarized to the MME and the centralized information center, and the power of the adjusted D2D transmission is fed back to the corresponding base station.
  • the embodiment further provides a D2D interference coordination method, the method includes the following steps: the user equipment UE sends a transmission power for indicating D2D transmission to be scheduled on a corresponding radio resource, or indicates that the corresponding radio resource is The D2D transmits the D2D transmission transmit power information of the interference caused power information to the base station, where the D2D transmission transmit power information is used to instruct the base station to perform interference coordination processing.
  • the UE reports the transmit power information of the D2D transmission to the base station, so that the base station performs interference coordination processing on the D2D transmission of the UE.
  • the D2D transmission transmit power information reported by the UE may be referred to as D2D transmission interference power information, and is used to indicate power information that causes interference to the D2D transmission or power restriction information that is expected for the corresponding D2D transmission.
  • the information indicates whether the transmit power causing interference to the D2D transmission exceeds a certain threshold or a level of transmit power indicating interference to the D2D transmission, such as high to medium low, or whether the expected power for the corresponding D2D transmission exceeds a certain threshold or Power level.
  • the corresponding threshold values can be supplied together, either by default configuration or by other means, with only a threshold index or a fixed default value.
  • the interference sensitivity information of the D2D includes one of the following information: time, group identifier of the D2D transmission, priority, resource information corresponding to the D2D transmission, and the like.
  • the time indicates the effective time of the D2D interference sensitivity information or the duration of the D2D transmission.
  • the interference power information of the D2D transmission may be a D2D transmission resource unit, a D2D communication resource unit, a D2D scheduling allocation resource unit or a D2D discovery resource unit, or in a PRB unit.
  • the interference situation can be reported only to the D2D UE at the cell edge.
  • bitmaps can be further distinguished for D2D discovery/D2D communication, the respective lengths of which are the same as the discovery resources/SA resources/data PRBs included in the D2D resources.
  • the D2D resource of the cell is divided into blocks, and the part is divided into a cell center UE for D2D transmission or a lower power D2D transmission, and a part is used by the cell edge UE for D2D transmission or higher power D2D transmission.
  • the D2D interference status information indicates only the latter D2D interference status information. That is, the bit map length is the same as the number of D2D transmission resources for the cell edge UE or the higher power D2D transmission resources.
  • the D2D resource partition information may be exchanged between adjacent cells or configured by an Operation and Maintenance Management Entity (OAM).
  • OAM Operation and Maintenance Management Entity
  • the UE reporting the interference power information of the D2D transmission to the base station may be triggered by one of: event triggering, periodic reporting, or timer triggering.
  • the event triggering includes one of the following: 1) the UE detects the interference or resource conflict of the D2D transmission; preferably, the UE may detect the interference or resource conflict of the D2D transmission while listening or receiving the D2D transmission of other UEs. Or, the UE detects that its own D2D transmission receives interference or a resource conflict occurs, for example, by monitoring or receiving feedback from the UE. 2) The UE receives a report request from the base station. 3) The UE has D2D transmission resource requirements or D2D signals or data to be transmitted.
  • the periodic report is that the UE collects the D2D interference situation corresponding to the granularity of each resource, and periodically reports the average value.
  • the resource unit may be a D2D discovery resource unit, or an SA resource unit, or a data resource unit or a PRB.
  • the data resource may be only a resource corresponding to the D2D communication that the UE is interested in.
  • the terminal may report the interference power information of the D2D transmission by using the UE terminal assistance information (MeasurementInformation), the measurement report (MeasurementReport), the RRC connection setup (Connection Setup), the tracking area update request (TAU Request) process, or the new message.
  • the UE terminal assistance information MeasurementInformation
  • the measurement report MeasurementReport
  • the RRC connection setup Connection Setup
  • TAU Request tracking area update request
  • the base station performs interference processing according to the interference power information of the D2D transmission reported by the UE.
  • the interference processing comprises one of the following:
  • the base station performs power limitation adjustment or resource scheduling adjustment for the corresponding D2D transmission according to the interference power information transmitted by the D2D. For example, if the corresponding D2D transmission is a transmission within a cell, and the interference power information of the D2D transmission indicates that the D2D transmission is subject to higher interference or the interference power is larger or the power expected by the UE for the corresponding D2D transmission is higher, the base station transmits the corresponding D2D. The power limit value is increased and dispatched to resources that are less interfered.
  • the base station reports the interference power information of the D2D transmission to the neighboring base station according to the interference power information of the D2D transmission reported by the UE.
  • the base station obtains a possible interference source cell/base station according to the interference power information of the D2D transmission reported by the UE and the D2D resource (pool) information of the neighboring base station.
  • reporting the interference power information of the D2D transmission to the neighboring base station means that the base station reports the interference power information of the D2D transmission to the possible interference source cell/base station.
  • the interference power information of the D2D transmission reported by the UE includes the cell/base station identifier.
  • the interference power information transmitted by the D2D indicates an interference power condition received by the corresponding D2D transmission or a desired power or power limitation of the D2D transmission.
  • the neighboring base station After receiving the interference power information of the D2D transmission, the neighboring base station performs corresponding interference coordination according to the information. For example, when the interference power information of the D2D transmission is high or exceeds a certain threshold, the neighboring base station does not try to schedule a cellular transmission or a D2D transmission that may interfere with the D2D transmission on the resource, such as a UE at the cell edge. Related transmission or higher power transmission.
  • the base station aggregates and shares the interference power information transmitted by the D2D through OAM or reports to the MME and the centralized information center.
  • the interference power information transmitted by the D2D is collected by OAM, or summarized to the MME and the centralized information center, and the power of the adjusted D2D transmission is fed back to the corresponding base station.
  • the base station obtains interference power information of the D2D transmission of the neighboring base station through the OAM, the MME, and the centralized information center.
  • FIG. 4 is a schematic structural diagram of a D2D interference coordination apparatus according to an embodiment of the present invention.
  • the apparatus includes: an obtaining module 42 and a coordination module 44, wherein the obtaining module 42 is configured to acquire D2D transmission transmit power information, where The D2D transmission transmit power information is used to indicate the transmit power of the D2D transmission to be scheduled on the corresponding radio resource, or the power information indicating the interference to the D2D transmission on the corresponding radio resource; the coordination module 44 is coupled to the acquisition module 42, It is set to perform interference coordination processing according to D2D transmission transmit power information.
  • modules and units involved in the embodiments of the present invention may be implemented by software or by hardware.
  • the described modules and units in this embodiment may also be disposed in a processor.
  • it may be described as a processor including an obtaining module 42 and a coordination module 44.
  • the names of these modules do not constitute a limitation on the module itself in some cases.
  • the obtaining module 42 may also be described as "a module configured to acquire D2D transmission transmit power information.”
  • the D2D interference coordination device described in the device embodiment corresponds to the foregoing method embodiment, and the specific implementation process has been described in detail in the method embodiment, and details are not described herein again.
  • the coordination module 44 may include at least one of the following units: a scheduling unit 442, and a first sending unit 444. Or the second sending unit 446.
  • the scheduling unit 442 is configured to perform power limitation adjustment or resource scheduling adjustment for the D2D transmission according to the transmission transmit power information.
  • the first sending unit is configured to send the D2D transmission transmit power information to the neighboring base station of the base station, and the second sending unit, It is set to send D2D transmission transmit power information to the processing center.
  • FIG. 6 is a schematic diagram of a preferred structure of a D2D interference coordination apparatus according to an embodiment of the present invention.
  • the scheduling unit 442 may include: a first determining subunit 4422, configured to transmit transmit power information according to D2D, Determining whether the transmit power of the D2D transmission exceeds a first preset value, or determining a level of transmit power of the D2D transmission; the scheduling subunit 4424, coupled to the first determining subunit 4422, configured to transmit in the D2D If the transmit power exceeds the first preset value, or the transmit power level of the D2D transmission is higher than the preset level, the cellular transmission or D2D transmission that is not easy to interfere with the cell is preferentially scheduled on the corresponding radio resource, or no scheduling is performed. transmission.
  • FIG. 7 is a schematic diagram of a preferred structure of a D2D interference coordination apparatus according to an embodiment of the present invention.
  • the scheduling unit 442 may further include: a second determining subunit 4426 configured to transmit transmit power information according to D2D.
  • the processing subunit 4428 coupled to the second determining subunit 4426, is set to If the power of the interference caused by the D2D transmission exceeds the second preset value, or the power expected by the D2D transmission exceeds the third preset value, the power limit of the D2D transmission is increased, and the D2D transmission is scheduled to be less interfered by the wireless Resources.
  • FIG. 8 is a schematic diagram of a preferred structure of a D2D interference coordination apparatus according to an embodiment of the present invention.
  • the first sending unit 444 may include: a third determining subunit 4442, configured to transmit transmit power according to D2D. Information and/or D2D resource information of the neighboring base station, determining a possible interferer cell/base station; the first transmitting subunit 4444, coupled to the third determining subunit 4442, configured to transmit the D2D transmission transmit power information to the determined possibility Interference source cell/base station.
  • FIG. 9 is a schematic diagram of a preferred structure of a D2D interference coordination apparatus according to an embodiment of the present invention.
  • the acquisition module 42 may include: a receiving unit 422 configured to receive D2D transmissions sent by a UE or a neighboring base station. The transmit power information; and/or the generating unit 424 is configured to generate D2D transmission transmit power information according to the interference condition of the radio resource.
  • This embodiment also provides a D2D interference coordination apparatus, which is applied to a user equipment.
  • the apparatus includes: a transmitting module configured to transmit D2D transmission transmit power information indicating a transmit power of a D2D transmission to be scheduled on a corresponding radio resource, or power information indicating interference to a D2D transmission on a corresponding radio resource To the base station, where the D2D transmission transmit power information is used to instruct the base station to perform interference coordination processing.
  • the embodiment further provides a base station, which includes the above-mentioned D2D interference coordination device applied to the base station.
  • the embodiment further provides a user equipment, where the user equipment includes the D2D interference coordination apparatus applied to the user equipment.
  • This embodiment describes a method in which a base station provides power information of D2D transmission to a neighboring base station.
  • the method includes the following steps:
  • Step 1 The base station provides power information of the D2D transmission to the neighboring base station.
  • the information indicates power information that causes interference to the D2D transmission or D2D transmission transmission power information that is scheduled on the corresponding resource for a period of time in the future.
  • the information indicates whether the transmit power of the D2D transmission exceeds a certain threshold or a level indicating the transmit power of the D2D transmission, such as high, medium, and low.
  • a certain threshold or a level indicating the transmit power of the D2D transmission such as high, medium, and low.
  • the corresponding threshold values can be supplied together, either by default configuration or by other means, with only a threshold index or a fixed default value.
  • the transmit power information of the D2D transmission includes one of the following information: time, group number of the D2D transmission, priority, resource information corresponding to the D2D transmission, and the like.
  • the time indicates the effective time of the transmit power of the D2D transmission or the duration of the D2D transmission.
  • Step 2 After receiving the power information of the D2D transmission, the neighboring base station performs corresponding interference coordination according to the information. For example, when the transmit power exceeds a certain threshold or the power level is high, the neighboring base station does not try to schedule cellular transmission or D2D transmission susceptible to the D2D transmission interference on the resource, such as UE-related transmission at the cell edge. Or a higher power transmission. For example, when the transmit power does not exceed a certain threshold or the power level is low, the neighboring base station tries to schedule cellular transmission or D2D transmission on the resource that is not easy to interfere with the D2D transmission, such as UE related in the cell center. Transmission or transmission with lower power.
  • the neighboring base station after receiving the power information of the D2D transmission, performs corresponding interference coordination according to the group number or priority of the D2D transmission in the information. For example, when the priority of the D2D transmission is high, the base station only schedules the cell transmission of the cell center UE or the transmission of the lower power or does not schedule the transmission of any UE or the low priority of the UE on the corresponding resource of the power information transmitted by the D2D. Level transfer. When the priority is low, the base station schedules a higher priority transmission of the cell center or the edge UE on the corresponding resource of the power information of the D2D transmission.
  • the neighboring base station after receiving the power information of the D2D transmission, performs corresponding interference coordination according to the time information of the D2D transmission in the information. For example, during the corresponding duration of the D2D transmission, the base station only schedules cellular transmission or lower power transmission of the cell center UE or does not schedule transmission of any UE or low priority of the UE on the corresponding resource of the power information transmitted by the D2D. transmission. After the corresponding time, the transmission of the cell edge UE can be scheduled.
  • the power information for providing the D2D transmission may be a D2D transmission resource unit, a D2D communication resource unit, a D2D scheduling allocation unit or a D2D discovery resource unit, or in units of PRBs.
  • different bitmaps can be further distinguished for D2D discovery/D2D communication, the respective lengths of which are the same as the discovery resources/SA resources/data PRBs included in the D2D resources.
  • the power information of the D2D transmission is indicated only on the D2D resource or the D2D resource allocated to the cell edge UE.
  • the D2D resource of the cell is divided into blocks, and the D2D transmission is used by the cell center UE for D2D transmission or the D2D transmission of the lower power UE, and the D2D transmission is used for the cell edge UE or the D2D transmission of the UE with higher power.
  • the power information transmitted by the D2D only indicates the D2D transmission power information of the latter. That is, the bit map length is the same as the number of D2D transmission resources of the D2D transmission or the higher power UE used for the cell edge UE.
  • the D2D resource partitioning information may be exchanged between neighboring cells, such as by an eN Configuration Update message or a Load information message, or configured by OAM.
  • the power information of the D2D transmission may be uniformly indicated in an IE with the power information of the existing cellular transmission, or may be separately indicated.
  • the indication is unified, it is also necessary to indicate which power information corresponds to the D2D transmission.
  • the D2D resource (pool) information is also sent to the neighboring cell through the interaction between neighboring cells or OAM configuration.
  • the neighboring area can learn the power information of the corresponding D2D transmission according to the information combined with the unified transmission power information.
  • the base station should ignore the transmission power information corresponding to the D2D resources in the received power information of the existing cellular transmission.
  • the power information transmitted by the D2D is reused by the existing relative narrowband transmit power IE or indicated by a new IE.
  • a corresponding D2D identifier may be added to indicate that the information is power information of the D2D transmission.
  • the power information transmitted by the D2D is carried in the X2Load information message.
  • the power information of the D2D transmission is summarized or shared to the neighboring base station by means of OAM or reporting to the MME and the centralized information center.
  • This embodiment describes a method for a UE to report interference power information of a D2D transmission to a base station.
  • the method includes the following steps:
  • the UE reports the interference power information of the D2D transmission to the base station.
  • the interference power information transmitted by the D2D indicates power information that causes interference to the D2D transmission or power limit information that is desired for the corresponding D2D transmission.
  • the information indicates whether the transmit power causing interference to the D2D transmission exceeds a certain threshold or a level of transmit power indicating interference to the D2D transmission, such as high to medium low, or whether the desired power for the corresponding D2D transmission is Exceeded a certain threshold or power level.
  • the corresponding threshold values can be supplied together, either by default configuration or by other means, with only a threshold index or a fixed default value.
  • the transmit power information of the D2D transmission includes one of the following information: time, group number of the D2D transmission, priority, resource information corresponding to the D2D transmission, and the like.
  • the time indicates the effective time of the transmit power of the D2D transmission or the duration of the D2D transmission.
  • Step 2 The base station performs interference processing according to the interference power information of the D2D transmission reported by the UE.
  • the interference processing comprises one of the following:
  • the base station performs power limitation adjustment or scheduling resource adjustment for the corresponding D2D transmission according to the interference power information transmitted by the D2D. For example, if the corresponding D2D transmission is a transmission in a cell, and the interference power information of the D2D transmission indicates that the D2D transmission is subject to higher interference or the interference power is larger or the power expected by the UE for the corresponding D2D transmission is higher, the base station will correspondingly D2D. The power limit of the transmission is increased and dispatched to resources that are less subject to interference.
  • the base station reports the interference power information of the D2D transmission to the neighboring base station according to the interference power information of the D2D transmission reported by the UE.
  • the base station obtains a possible interference source cell/base station according to the interference power information of the D2D transmission reported by the UE and the D2D resource (pool) information of the neighboring base station.
  • reporting the interference power information of the D2D transmission to the neighboring base station means that the base station reports the interference power information of the D2D transmission to the possible interference source cell/base station.
  • the interference power information transmitted by the D2D indicates an interference power condition received by the corresponding D2D transmission or a desired power or power limitation of the D2D transmission.
  • the base station aggregates and shares the interference power information of the D2D transmission reported by the UE through OAM, or reports to the MME and the centralized information center.
  • the interference power information of the D2D transmission may be a D2D transmission resource unit, a D2D communication resource unit, a D2D scheduling allocation resource unit or a D2D discovery resource unit, or in a PRB unit.
  • bitmaps can be further distinguished for D2D discovery/D2D communication, the respective lengths of which are the same as the discovery resources/SA resources/data PRBs included in the D2D resources.
  • the D2D resource of the cell is divided into blocks, and the part is divided into a cell center UE for D2D transmission or a lower power D2D transmission, and a part is used by the cell edge UE for D2D transmission or higher power D2D transmission.
  • the D2D interference status information indicates only the latter D2D interference status information. That is, the bit map length is the same as the number of D2D transmission resources for the cell edge UE or the higher power D2D transmission resources.
  • the D2D resource partitioning information may be exchanged between adjacent cells or configured by an operation and maintenance management entity.
  • the UE reporting the interference power information of the D2D transmission to the base station may be triggered by one of: event triggering, periodic reporting, or timer triggering.
  • the event triggering includes one of the following: 1) the UE detects the interference or resource conflict of the D2D transmission; preferably, the UE may detect the interference or resource conflict of the D2D transmission while listening or receiving the D2D transmission of other UEs. Or, the UE detects that its own D2D transmission receives interference or a resource conflict occurs, for example, by monitoring or receiving feedback from the UE. 2) The UE receives a report request from the base station. 3) The UE has D2D transmission resource requirements or D2D signals or data to be transmitted.
  • the periodic report is that the UE collects the D2D interference situation corresponding to the granularity of each resource, and periodically reports the average value.
  • the resource unit may be a D2D discovery resource unit, or an SA resource unit, or a data resource unit or a PRB.
  • the data resource may be only a resource corresponding to the D2D communication that the UE is interested in.
  • the terminal may report the interference power information of the D2D transmission by using the UE AssistanceInformation, MeasurementReport, RRC Connection Setup, TAU Request procedure, or a new message.
  • the base station obtains interference power information of the D2D transmission of the neighboring base station through the OAM, the MME, and the centralized information center.
  • This embodiment describes a method for the UE to report the interference power information of the D2D transmission to the base station, and after receiving the information, the base station provides the interference power information of the D2D transmission to the neighboring base station to perform interference coordination.
  • the method includes the following steps:
  • the UE reports the interference power information of the D2D transmission to the base station.
  • the interference power information transmitted by the D2D indicates power information that causes interference to the D2D transmission or power limit information that is desired for the corresponding D2D transmission.
  • the information indicates whether the transmit power causing interference to the D2D transmission exceeds a certain threshold or a level of transmit power indicating interference to the D2D transmission, such as high to medium low, or whether the expected power for the corresponding D2D transmission exceeds a certain threshold or Power level.
  • the corresponding threshold values can be supplied together, either by default configuration or by other means, with only a threshold index or a fixed default value.
  • the transmit power information of the D2D transmission includes one of the following information: time, group number of the D2D transmission, priority, resource information corresponding to the D2D transmission, and the like.
  • the time indicates the effective time of the transmit power of the D2D transmission or the duration of the D2D transmission.
  • the base station reports the interference power information of the D2D transmission to the neighboring base station.
  • the base station obtains a possible interference source cell/base station according to the interference power information of the D2D transmission reported by the UE and the D2D resource (pool) information of the neighboring base station.
  • reporting the interference power information of the D2D transmission to the neighboring base station means that the base station reports the interference power information of the D2D transmission to the possible interference source cell/base station.
  • the interference power information transmitted by the D2D indicates an interference power condition received by the corresponding D2D transmission or a desired power or power limitation of the D2D transmission.
  • the base station transmits the interference power information of the D2D transmission reported by the UE to the neighboring base station through OAM, or other methods such as reporting to the MME and the centralized information center.
  • Step 3 After receiving the interference power information of the D2D transmission, the neighboring base station performs corresponding interference coordination according to the information. For example, when the interference power information of the D2D transmission is high or exceeds a certain threshold, the neighboring base station does not try to schedule a cellular transmission or a D2D transmission that may interfere with the D2D transmission on the resource, such as a UE at the cell edge. Related transmission or higher power transmission.
  • the interference power information of the D2D transmission may be a D2D transmission resource unit, a D2D communication resource unit, a D2D scheduling allocation resource unit or a D2D discovery resource unit, or in a PRB unit.
  • the interference situation can be reported only by the D2D UE at the edge of the cell.
  • bitmaps can be further distinguished for D2D discovery/D2D communication, the respective lengths of which are the same as the discovery resources/SA resources/data PRBs included in the D2D resources.
  • the D2D resource of the cell is divided into blocks, and the part is divided into a cell center UE for D2D transmission or a lower power D2D transmission, and a part is used by the cell edge UE for D2D transmission or higher power D2D transmission.
  • the D2D interference status information indicates only the latter D2D interference status information. That is, the bit map length is the same as the number of D2D transmission resources for the cell edge UE or the higher power D2D transmission resources.
  • the D2D resource partitioning information may be exchanged between adjacent cells or configured by an operation and maintenance management entity.
  • the UE reporting the interference power information of the D2D transmission to the base station may be triggered by one of: event triggering, periodic reporting, or timer triggering.
  • the event triggering includes one of the following: 1) the UE detects the interference or resource conflict of the D2D transmission; preferably, the UE may detect the interference or resource conflict of the D2D transmission while listening or receiving the D2D transmission of other UEs. Or, the UE detects that its own D2D transmission receives interference or a resource conflict occurs, for example, by monitoring or receiving feedback from the UE. 2) The UE receives a report request from the base station. 3) The UE has D2D transmission resource requirements or D2D signals or data to be transmitted.
  • the periodic report is that the UE collects the D2D interference situation corresponding to the granularity of each resource, and periodically reports the average value.
  • the resource unit may be a D2D discovery resource unit, or an SA resource unit, or a data resource unit or a PRB.
  • the data resource may be only a resource corresponding to the D2D communication that the UE is interested in.
  • the terminal may report the interference power information of the D2D transmission by using the UE AssistanceInformation, MeasurementReport, RRC Connection Setup, TAU Request procedure, or a new message.
  • the base station obtains interference power information of the D2D transmission of the neighboring base station through the OAM, the MME, and the centralized information center.
  • This embodiment describes a method in which a UE reports interference power information of a D2D transmission to a base station, and after receiving the information, the base station performs interference coordination.
  • the method includes the following steps:
  • the UE reports the interference power information of the D2D transmission to the base station.
  • the interference power information transmitted by the D2D indicates power information that causes interference to the D2D transmission or power limit information that is desired for the corresponding D2D transmission.
  • the information indicates whether the transmit power causing interference to the D2D transmission exceeds a certain threshold or a level of transmit power indicating interference to the D2D transmission, such as high to medium low, or whether the expected power for the corresponding D2D transmission exceeds a certain threshold or Power level.
  • the corresponding threshold values can be supplied together, either by default configuration or by other means, with only a threshold index or a fixed default value.
  • the base station After receiving the information, the base station performs resource allocation or scheduling adjustment or power adjustment for the corresponding D2D transmission according to the interference power information transmitted by the D2D. For example, if the corresponding D2D transmission is a transmission in a cell, and the interference power information of the D2D transmission indicates that the D2D transmission is subject to higher interference or the interference power is larger or the power expected by the UE for the corresponding D2D transmission is higher, the base station transmits the corresponding D2D. Allocate or schedule other resources or resources that are not easy to receive interference, or increase their transmit power, and schedule them to resources with less interference.
  • the transmit power information of the D2D transmission includes one of the following information: time, group number of the D2D transmission, priority, resource information corresponding to the D2D transmission, and the like.
  • the time indicates the effective time of the transmit power of the D2D transmission or the duration of the D2D transmission.
  • the interference power information of the D2D transmission may be a D2D transmission resource unit, a D2D communication resource unit, a D2D scheduling allocation resource unit or a D2D discovery resource unit, or in a PRB unit.
  • bitmaps can be further distinguished for D2D discovery/D2D communication, the respective lengths of which are the same as the discovery resources/SA resources/data PRBs included in the D2D resources.
  • the D2D resource of the cell is divided into blocks, and the part is divided into a cell center UE for D2D transmission or a lower power D2D transmission, and a part is used by the cell edge UE for D2D transmission or higher power D2D transmission.
  • the D2D interference status information indicates only the latter D2D interference status information. That is, the bit map length is the same as the number of D2D transmission resources for the cell edge UE or the higher power D2D transmission resources.
  • the D2D resource partitioning information may be exchanged between adjacent cells or configured by an operation and maintenance management entity.
  • the UE reporting the interference power information of the D2D transmission to the base station may be triggered by one of: event triggering, periodic reporting, or timer triggering.
  • the event triggering includes one of the following: 1) the UE detects the interference or resource conflict of the D2D transmission; preferably, the UE may detect the interference or resource conflict of the D2D transmission while listening or receiving the D2D transmission of other UEs. Or, the UE detects that its own D2D transmission receives interference or a resource conflict occurs, for example, by monitoring or receiving feedback from the UE. 2) The UE receives a report request from the base station. 3) The UE has D2D transmission resource requirements or D2D signals or data to be transmitted.
  • the periodic report is that the UE collects the D2D interference situation corresponding to the granularity of each resource, and periodically reports the average value.
  • the resource unit may be a D2D discovery resource unit, or an SA resource unit, or a data resource unit or a PRB.
  • the data resource may be only a resource corresponding to the D2D communication that the UE is interested in.
  • the terminal may report the interference power information of the D2D transmission by using the UE AssistanceInformation, MeasurementReport, RRC Connection Setup, TAU Request procedure, or a new message.
  • the problem of interference or resource collision between D2D transmissions between adjacent cells in D2D discovery or D2D communication, and D2D transmission and cellular transmission are solved.
  • Interference or resource conflicts are solved.
  • the method and system of the embodiment of the present invention can provide a targeted interference or conflict resolution method according to the policy and priority of the D2D transmission actual application, and improve the service quality and user experience of the D2D service.
  • the above-described embodiments of the present invention solve the problem that interference or resource collision caused by D2D transmission between cells causes degradation of reception performance of D2D transmission and cellular transmission, and improves reception performance.
  • modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in a storage device by a computing device, or they may be fabricated into individual integrated circuit modules, or Multiple modules or steps are made into a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

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Abstract

本发明提供了一种设备到设备(D2D)干扰协调方法、装置及基站、用户设备。其中，该方法包括：基站获取D2D传输发射功率信息，其中，D2D传输发射功率信息用于指示在相应的无线资源上将调度的D2D传输的发射功率，或者指示在相应的无线资源上对D2D传输造成干扰的功率信息（S302）；基站根据D2D传输发射功率信息，进行干扰协调处理（S304）。本发明解决了小区间的D2D传输引起的干扰或资源冲突导致D2D传输和蜂窝传输的接收性能下降的问题，提高了接收性能，从而提升了用户体验。

Description

设备到设备干扰协调方法、装置及基站、用户设备 技术领域
本发明涉及通信领域，具体而言，涉及一种设备到设备干扰协调方法、装置及基站、用户设备。
背景技术
随着无线多媒体业务的发展，人们对高数据速率和用户体验的需求日益增长，从而对传统蜂窝网络的系统容量和覆盖提出了较高要求。另一方面社交网络、近距离数据共享、本地广告等应用的流行使得人们对了解附近感兴趣的人或事物并与之通信的邻近服务(Proximity Services，PS)的需求逐渐增加。传统的基于小区的蜂窝网络在高数据速率以及邻近服务的支持方面存在明显的局限性，在这种需求背景下，代表未来通信技术发展新方向的设备到设备(Device-to-Device，D2D)技术应运而生。D2D技术的应用，可以减轻蜂窝网络的负担、减少用户设备的电池功耗、提高数据速率，并改善网络基础设施的鲁棒性，很好地满足上述高数据速率业务和邻近服务的要求。
D2D技术可以工作在授权频段或非授权频段，允许多个支持D2D功能的用户设备(即D2D用户设备，D2D User Equipment，D2D UE)在有网络基础设施或无网络基础设施的情况下进行直接发现/直接通信。D2D的应用场景主要有三种：
1)UE1和UE2在蜂窝网络的覆盖下进行数据交互，用户面数据不经过网络基础设施，如图1的模式1；
2)在弱/无覆盖区域的UE中继传输，如图1中的模式2，允许信号质量较差的UE4通过附近有网络覆盖的UE3与网络进行通信，能帮助运营商扩展覆盖、提高容量；
3)在发生地震或紧急情况，蜂窝网络不能正常工作的情况下，允许设备间直接通信，如图1中的模式3，UE5，UE6和UE7间控制面和用户面都不经过网络基础设施而进行一跳或多跳的数据通信。
D2D技术通常包括D2D发现技术和D2D通信技术：
1)D2D发现技术是指用于判断/确定两个或多个D2D用户设备之间相互邻近(例如在可进行D2D直接通信范围之内)或用于判断/确定第一用户设备邻近第二用户设备的技术。
2)D2D通信技术是指D2D用户设备之间部分或全部通信数据可以不通过网络基础设施而直接进行通信的技术。
D2D UE在进行D2D发现或D2D通信之前，都需要首先获取相应的无线资源，无论是D2D发现还是D2D通信资源，都存在两种资源分配方式，即基于竞争的资源获取(第一资源分配方式)或是由基站为UE分配专有的资源(第二资源分配方式)进行D2D发现/通信。第一资源分配方式通常由基站或是系统预分配一个D2D资源池，参与D2D发现/通信的D2D UE监听该资源池，并通过竞争的方式获取D2D发送资源，这种方式主要用于蜂窝网络覆盖外的D2D UE，也可用于蜂窝网络覆盖内的D2D UE。对于蜂窝网络覆盖内的D2D UE，其可使用所服务小区配置的D2D竞争资源池。对于蜂窝网络覆盖外的D2D UE，则可使用预配置的D2D竞争资源池。而第二资源分配方式由基站根据D2D UE的请求为D2D UE分配合适的D2D资源，这种方式只能用于位于蜂窝网络覆盖内的D2D UE。
对于D2D发现和D2D通信，若蜂窝网络覆盖内的D2D UE采用基于竞争的资源获取，可从基站处获得D2D资源池。然后该D2D UE可从该资源池中竞争选取资源进行D2D发送。
一般的，D2D传输与蜂窝传输共用资源，相邻小区间的D2D资源可能相同，也可能不同。对于相邻小区间的D2D传输与蜂窝传输共存场景，如图2所示，UE1和UE2在基站eNB1下，UE3、UE4、UE5在基站eNB2下，这些UE都处于相应小区的边缘区域。UE1在eNB1下进行D2D发送(指D2D发现或D2D通信的信号传输)，UE2和UE3正在对其进行相应的D2D监听或接收；UE4在eNB2下进行D2D发送，UE5正在对其进行相应的D2D监听或接收。如果eNB1和eNB1给UE1和UE4分配了相同的D2D资源，则两者的D2D传输之间可能会相互干扰，而如果UE3希望对UE1和UE4的D2D发送都能进行监听或接收，则由于两者的D2D资源发生冲突，对于只有半双工能力的UE来说，也无法进行正常的监听或接收。
在UE4有蜂窝传输的情况下，如果eNB2给UE4分配的蜂窝传输资源与eNB1给UE1分配的D2D传输资源相同，则UE4的蜂窝传输与UE1的D2D传输可能会相互干扰。
一般情况下，D2D传输普遍采用现有蜂窝通信的上行资源，故D2D传输与蜂窝传输的干扰主要指与蜂窝上行传输的干扰。若D2D传输也会采用现有蜂窝通信的下行资源，则D2D传输与蜂窝下行传输之间也可能出现干扰。
现有技术中针对相邻小区蜂窝传输之间的干扰问题，通过小区间的交互进行基于功率限制的干扰协调，主要方法如下：
相对窄带发射功率(Relative Narrowband Tx Power，RNTP)机制：以列表的形式向相邻基站提供每个资源块(Resource Block，RB)的下行功率限制和其他用于邻区进行干扰协调调度的其他信息。其中，以比特图的形式指示对应的下行RB在将来的一段时间发射功率是否会超过RNTP门限。相应的RNTP门限取值也在该列表中一并提供。
发明人在研究过程中发现，相关技术无法提供对于D2D传输的针对性的信息，也无法区分哪些信息是蜂窝通信间干扰相关的信息，哪些是D2D传输干扰相关的信息。而由于D2D传输资源与蜂窝传输资源负荷程度是有区别的，且对于D2D传输的策略与优先级与蜂窝传输的根据实际应用的不同也会有区别，进而在相应的干扰处理和调度上会有不同的考虑。所以，对于上述小区间的D2D传输引起的干扰或资源冲突问题，需要有针对性的解决方法，否则将会对D2D传输和蜂窝传输的效果产生较大的影响，导致接收性能下降，严重影响相关业务的用户体验。
针对相关技术中小区间的D2D传输引起的干扰或资源冲突导致D2D传输和蜂窝传输的接收性能下降的问题，目前尚未提出有效的解决方案。
发明内容
本发明提供了一种设备到设备干扰协调方法、装置及基站、用户设备，以至少解决小区间的D2D传输引起的干扰或资源冲突导致D2D传输和蜂窝传输的接收性能下降的问题。
根据本发明实施例的一个方面，提供了一种设备到设备(D2D)干扰协调方法，包括：基站获取D2D传输发射功率信息，其中，所述D2D传输发射功率信息用于指示在相应的无线资源上将调度的D2D传输的发射功率，或者指示在相应的无线资源上对所述D2D传输造成干扰的功率信息；所述基站根据所述D2D传输发射功率信息，进行干扰协调处理。
优选地，基站获取D2D传输发射功率信息包括：所述基站接收用户设备(UE)或者相邻基站发送的所述D2D传输发射功率信息；和/或所述基站根据无线资源的干扰状况，生成所述D2D传输发射功率信息。
优选地，所述D2D传输发射功率信息包括以下至少之一的信息：指示D2D传输发射功率信息的有效时间或所述D2D传输的持续时间、所述D2D传输的组标识、所述D2D传输的优先级、所述D2D传输对应的资源信息。
优选地，根据所述D2D传输发射功率信息，进行干扰协调处理包括以下至少之一：所述基站根据所述D2D传输发射功率信息为所述D2D传输进行功率限制调整或资源调度调整；所述基站将所述D2D传输发射功率信息发送给所述基站的相邻基站；所述基站将所述D2D传输发射功率信息发送给处理中心。
优选地，所述基站根据所述D2D传输发射功率信息为所述D2D传输进行资源调度调整包括：所述基站根据所述D2D传输发射功率信息，确定所述D2D传输的发射功率是否超过第一预设值，或者确定所述D2D传输的发射功率的等级；所述基站在所述D2D传输的发射功率超过第一预设值，或者所述D2D传输的发射功率等级高于预设等级的情况下，在相应的无线资源上优先调度不易对小区产生干扰的蜂窝传输或D2D传输，或者不调度任何传输。
优选地，在所述D2D传输为小区内的传输的情况下，所述基站根据所述D2D传输发射功率信息为所述D2D传输进行功率限制调整包括：所述基站根据所述D2D传输发射功率信息，确定对所述D2D传输造成干扰的功率是否超过第二预设值，或者确定所述D2D传输所期望的功率是否超过第三预设值；所述基站在对所述D2D传输造成干扰的功率超过第二预设值，或者所述D2D传输所期望的功率超过第三预设值的情况下，提高所述D2D传输的功率限制值，并将所述D2D传输调度到受到干扰较少的无线资源。
优选地，在所述D2D传输发射功率信息包括所述D2D传输的优先级的情况下，所述基站根据所述D2D传输发射功率信息为所述D2D传输进行资源调度调整包括：所述基站在所述D2D传输的优先级高于第二预设值的情况下，在所述D2D传输发射功率信息对应的无线资源上只调度小区中心UE的蜂窝传输/D2D传输，或功率较低的传输或不调度任何UE的传输；和/或所述基站在所述D2D传输的优先级不高于第二预设值的情况下，在所述D2D传输的无线资源上调度小区中心的传输或功率较低的传输或边缘UE的优先级较高的传输。
优选地，在所述D2D传输发射功率信息包括所述D2D传输的持续时间的情况下，所述基站根据所述D2D传输发射功率信息为所述D2D传输进行功率限制调整或资源调度调整包括：所述基站在所述D2D传输的持续时间内，在所述D2D传输发射功率信息对应的无线资源上只调度小区中心UE的蜂窝传输/D2D传输或功率较低的传输或 不调度任何UE的传输或不调度UE的优先级较低的传输；和/或所述基站在所述D2D传输的持续时间后，在所述D2D传输发射功率信息对应的无线资源上调度小区边缘UE的传输。
优选地，所述基站将所述D2D传输发射功率信息发送给所述基站的相邻基站包括：所述基站根据所述D2D传输发射功率信息，和/或所述相邻基站的D2D资源信息，确定可能的干扰源小区/基站；所述基站将所述D2D传输发射功率信息发送给确定的所述可能的干扰源小区/基站。
优选地，所述处理中心包括以下至少之一：操作维护管理实体(OAM)、移动管理实体(MME)或者集中式信息中心。
优选地，所述D2D传输发射功率信息对应的无线资源以D2D传输资源单元为单位、或者以D2D通信资源单元为单位、或者以D2D调度分配资源单元为单位、或者以D2D发现资源单元为单位、或者以物理资源块(PRB)为单位。
优选地，在所述D2D传输发射功率信息中携带的比特图中，D2D发现/D2D通信对应的比特图的长度分别与D2D资源包含的发现资源或调度分配(Scheduling Assignment，SA)资源或数据PRB的个数相同。
优选地，在基站的小区的D2D资源被划分为小区中心UE进行D2D传输或功率较低的UE的D2D传输使用的部分和小区边缘UE进行D2D传输或功率较高的UE的D2D传输使用的部分的情况下，所述D2D传输发射功率信息中携带的比特图长度与用于小区边缘UE的D2D传输或功率较高的UE的D2D传输资源个数相同。
优选地，所述D2D资源的分块信息通过相邻小区间的交互进行配置，或者由OAM配置。
优选地，所述D2D传输发射功率信息与现有蜂窝资源的干扰状态信息在一个信息单元(IE)中统一指示，或者单独指示。
优选地，所述D2D传输发射功率信息重用过载指示信息，或者采用新的信息单元进行指示。
优选地，所述D2D传输发射功率信息携带在X2(基站之间的互连接口)负荷信息消息中。
根据本发明实施例的另一个方面，还提供了一种设备到设备(D2D)干扰协调方法，包括：用户设备UE发送用于指示在相应的无线资源上将调度的D2D传输的发射功率，或者指示在相应的无线资源上对所述D2D传输造成干扰的功率信息的D2D传输发射功率信息至基站，其中，所述D2D传输发射功率信息用于指示所述基站进行干扰协调处理。
优选地，所述D2D传输发射功率信息包括以下至少之一的信息：指示D2D传输发射功率信息的有效时间或所述D2D传输的持续时间、所述D2D传输的组标识、所述D2D传输的优先级、所述D2D传输对应的资源信息。
优选地，UE通过以下之一的方式触发向基站发送所述D2D传输发射功率信息：事件触发、周期上报、定时器触发。
优选地，所述事件触发包括以下至少之一的方式：所述UE检测到D2D传输的干扰或者资源冲突；所述UE收到所述基站指示所述UE上报所述D2D传输发射功率信息的上报请求；所述UE有D2D传输资源需求或者有待传输的D2D信号或数据。
优选地，所述周期上报包括：所述UE收集每个资源粒度所对应的D2D干扰程度，并将所述D2D干扰程度的平均值进行周期性上报。其中，所述资源粒度的资源单位包括以下至少之一：D2D发现资源单元、或调度分配(SA)资源单元、或数据资源单元、或PRB。
优选地，UE发送所述D2D传输发射功率信息至所述基站包括：所述UE通过终端辅助信息、测量报告、无线资源控制协议(RRC)连接建立、跟踪区域更新请求流程中的一个，或者新的消息上报所述D2D传输发射功率信息。
根据本发明实施例的另一个方面，还提供了一种设备到设备(D2D)干扰协调装置，应用于基站，包括：获取模块，设置为获取D2D传输发射功率信息，其中，所述D2D传输发射功率信息用于指示在相应的无线资源上将调度的D2D传输的发射功率，或者指示在相应的无线资源上对所述D2D传输造成干扰的功率信息；协调模块，设置为根据所述D2D传输发射功率信息，进行干扰协调处理。
优选地，所述协调模块包括以下至少之一：调度单元，设置为根据所述D2D传输发射功率信息为所述D2D传输进行功率限制调整或资源调度调整；第一发送单元，设置为将所述D2D传输发射功率信息发送给所述基站的相邻基站；第二发送单元，设置为将所述D2D传输发射功率信息发送给处理中心。
优选地，所述调度单元包括：第一确定子单元，设置为根据所述D2D传输发射功率信息，确定所述D2D传输的发射功率是否超过第一预设值，或者确定所述D2D传输的发射功率的等级；调度子单元，设置为在所述D2D传输的发射功率超过第一预设值，或者所述D2D传输的发射功率等级高于预设等级的情况下，在相应的无线资源上优先调度不易对小区产生干扰的蜂窝传输或D2D传输，或者不调度任何传输。
优选地，所述调度单元包括：第二确定子单元，设置为根据所述D2D传输发射功率信息，确定对所述D2D传输造成干扰的功率是否超过第二预设值，或者确定所述D2D传输所期望的功率是否超过第三预设值；处理子单元，设置为在对所述D2D传输造成干扰的功率超过第二预设值，或者所述D2D传输所期望的功率超过第三预设值的情况下，提高所述D2D传输的功率限制值，并将所述D2D传输调度到受到干扰较少的无线资源。
优选地，所述第一发送单元包括：第三确定子单元，设置为根据所述D2D传输发射功率信息和/或所述相邻基站的D2D资源信息，确定可能的干扰源小区/基站；第一发送子单元，设置为将所述D2D传输发射功率信息发送给确定的所述可能的干扰源小区/基站。
优选地，所述获取模块包括：接收单元，设置为接收UE或者相邻基站发送的所述D2D传输发射功率信息；和/或生成单元，设置为根据无线资源的干扰状况，生成所述D2D传输发射功率信息。
根据本发明实施例的另一个方面，还提供了一种设备到设备(D2D)干扰协调装置，应用于用户设备，包括：发送模块，设置为发送用于指示在相应的无线资源上将调度的D2D传输的发射功率，或者指示在相应的无线资源上对所述D2D传输造成干扰的功率信息的D2D传输发射功率信息至基站，其中，所述D2D传输发射功率信息用于指示所述基站进行干扰协调处理。
根据本发明实施例的另一个方面，还提供了一种基站，包括：上述应用于基站的D2D干扰协调装置。
根据本发明实施例的另一个方面，还提供了一种用户设备，包括：上述应用于用户设备的D2D干扰协调装置。
通过本发明实施例，采用基站获取D2D传输发射功率信息，其中，D2D传输发射功率信息用于指示在相应的无线资源上将调度的D2D传输的发射功率，或者指示在相应的无线资源上对D2D传输造成干扰的功率信息；基站根据D2D传输发射功率信 息，进行干扰协调处理的方式，解决了小区间的D2D传输引起的干扰或资源冲突导致D2D传输和蜂窝传输的接收性能下降的问题，提高了接收性能，从而提升了用户体验。
附图说明
此处所说明的附图用来提供对本发明的进一步理解，构成本申请的一部分，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1是根据相关技术的D2D传输网络结构示意图；
图2是根据相关技术的相邻小区间的D2D传输与蜂窝传输共存场景的示意图；
图3是根据本发明实施例的D2D干扰协调方法的流程示意图；
图4是根据本发明实施例的D2D干扰协调装置的结构示意图；
图5是根据本发明实施例的D2D干扰协调装置的优选结构示意图一；
图6是根据本发明实施例的D2D干扰协调装置的优选结构示意图二；
图7是根据本发明实施例的D2D干扰协调装置的优选结构示意图三；
图8是根据本发明实施例的D2D干扰协调装置的优选结构示意图四；
图9是根据本发明实施例的D2D干扰协调装置的优选结构示意图五。
具体实施方式
需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。下面将参考附图并结合实施例来详细说明本发明。
在附图的流程图示出的步骤可以在诸如一组计算机可执行指令的计算机系统中执行，并且，虽然在流程图中示出了逻辑顺序，但是在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤。
本实施例提供了一种D2D干扰协调方法，图3是根据本发明实施例的D2D干扰协调方法的流程示意图，如图3所示，该流程包括如下步骤：
步骤S302，基站获取D2D传输发射功率信息，其中，D2D传输发射功率信息用于指示在相应的无线资源上将调度的D2D传输的发射功率，或者指示在相应的无线资源上对D2D传输造成干扰的功率信息；
步骤S304，基站根据D2D传输发射功率信息，进行干扰协调处理。
通过上述步骤，采用向基站发送D2D传输发射功率信息的方式，使得基站可以根据将要调度的D2D传输的发射功率对基站的传输进行调协调度，解决了小区间的D2D传输引起的干扰或资源冲突导致D2D传输和蜂窝传输的接收性能下降的问题，提高了接收性能和D2D通信服务质量，从而提升了用户体验。
其中，该信息指示对D2D传输造成干扰的功率信息或在将来一段时间对应资源上被调度的D2D传输发射功率信息。
优选地，该信息指示D2D传输的发射功率是否超过一定门限或指示D2D传输的发射功率的等级，如高中低。相应的门限取值可随之一起提供，或通过默认配置或其他方式提供，随之只提供门限索引，或采用固定的默认取值。
优选地，D2D传输的发射功率信息包括以下信息之一：时间，D2D传输的组号，优先级，D2D传输对应的资源信息等。其中，时间指示D2D传输的发射功率的有效时间或D2D传输的持续时间。
优选地，相邻基站收到该D2D传输的功率信息后，根据信息进行相应的干扰协调。比如，当发射功率超过一定门限值或功率等级为高时，则相邻基站在该资源上尽量不调度易受该D2D传输干扰的蜂窝传输或D2D传输，比如处于小区边缘的UE相关的传输或功率较高的传输。比如，当发射功率未超过一定门限值或功率等级为低时，则相邻基站在该资源上尽量调度不易对该D2D传输产生干扰的蜂窝传输或D2D传输，比如处于小区中心的UE相关的传输或功率较低的传输。
优选地，相邻基站收到D2D传输的功率信息后，根据信息中D2D传输的组号或优先级进行相应的干扰协调。比如，当D2D传输的优先级较高时，该基站在D2D传输的功率信息的相应资源上只调度小区中心UE的蜂窝传输/D2D传输或功率较低的传输或不调度任何UE的传输或UE的低优先级传输。当优先级较低时，该基站在D2D传输的功率信息的相应资源上调度小区中心或边缘UE的优先级较高的传输。
优选地，相邻基站收到D2D传输的功率信息后，根据信息中D2D传输的时间信息进行相应的干扰协调。比如，在D2D传输的对应持续时间内，该基站在D2D传输 的功率信息的相应资源上只调度小区中心UE的蜂窝传输/D2D传输或功率较低的传输或不调度任何UE的传输或UE的低优先级传输。在对应时间后，可调度小区边缘UE的传输。
优选地，提供D2D传输的功率信息可以D2D传输资源单元，D2D通信资源单元，D2D调度分配资源单元，或D2D发现资源单元为单位，或以PRB为单位。
优选地，可针对D2D发现/D2D通信进一步区分不同的比特图，其分别的长度与D2D资源包含的发现资源/SA资源/数据PRB个数相同。优选地，仅在D2D资源或分配给小区边缘UE的D2D资源上指示D2D传输的功率信息。
优选地，将小区的D2D资源进行分块，一部分划为小区中心UE进行D2D传输或功率较低的UE的D2D传输使用，一部分为小区边缘UE进行D2D传输或功率较高的UE的D2D传输使用。优选地，D2D传输的功率信息仅指示后者的D2D传输功率信息。即比特图长度与用于小区边缘UE的D2D传输或功率较高的UE的D2D传输资源个数相同。
优选地，D2D资源分块信息可在相邻小区间交互，或者由OAM配置。
优选地，D2D传输的功率信息可与现有蜂窝传输的功率信息在一个IE中统一指示，也可单独指示。在统一指示时，也需指示哪些是对应D2D传输的功率信息。比如，D2D资源(池)信息也通过相邻小区间交互，或OAM配置的方式发送给邻区。邻区可根据该信息结合统一的传输功率信息得知相应的D2D传输的功率信息。优选地，在单独指示时，基站应忽略所收到的现有蜂窝传输的功率信息中D2D资源所对应的传输功率信息。
优选地，D2D传输的功率信息重用现有相对窄带发射功率(Relative Narrowband Tx Power)信息单元(Information Element，IE)或采用新的IE进行指示。进一步可增加相应的D2D标识，用于指示该信息为D2D传输的功率信息。
优选地，D2D传输的功率信息在X2负荷信息(Load information)消息中携带。
优选地，将D2D传输的功率信息，通过OAM，或者向MME和或集中式信息中心上报的方式进行汇总和或共享给相邻基站。
优选地，将D2D传输的功率信息，通过OAM，或者向MME和或集中式信息中心汇总，并将调整后的D2D传输的功率反馈给相应基站。
本实施例还提供了一种D2D干扰协调方法，该方法包括如下步骤：用户设备UE发送用于指示在相应的无线资源上将调度的D2D传输的发射功率，或者指示在相应的无线资源上对D2D传输造成干扰的功率信息的D2D传输发射功率信息至基站，其中，D2D传输发射功率信息用于指示基站进行干扰协调处理。
在本实施例中，通过UE向基站上报D2D传输的发射功率信息，从而使得基站对UE的D2D传输进行干扰协调处理。其中，UE上报的D2D传输发射功率信息可称为D2D传输的干扰功率信息，用于指示对D2D传输造成干扰的功率信息或者对相应D2D传输所期望的功率限制信息。
优选地，该信息指示对D2D传输造成干扰的发射功率是否超过了一定门限或指示对D2D传输造成干扰的发射功率的等级，如高中低，或者对相应D2D传输所期望的功率是否超过一定门限或功率等级。相应的门限取值可随之一起提供，或通过默认配置或其他方式提供，随之只提供门限索引，或采用固定的默认取值。
优选地，D2D的干扰敏感度信息包括以下信息之一：时间，D2D传输的组标识，优先级，D2D传输对应的资源信息等。其中，时间指示D2D干扰敏感度信息的有效时间或D2D传输的持续时间。
优选地，D2D传输的干扰功率信息可以D2D传输资源单元，D2D通信资源单元，D2D调度分配资源单元或D2D发现资源单元为单位，或以PRB为单位。优化的，可以仅对处于小区边缘的D2D UE上报干扰情况。
优选地，可针对D2D发现/D2D通信进一步区分不同的比特图，其分别的长度与D2D资源包含的发现资源/SA资源/数据PRB个数相同。
优选地，将小区的D2D资源进行分块，一部分划为小区中心UE进行D2D传输或功率较低的D2D传输使用，一部分为小区边缘UE进行D2D传输或功率较高的D2D传输使用。优选地，D2D干扰状态信息仅指示后者的D2D干扰状态信息。即比特图长度与用于小区边缘UE的D2D传输或功率较高的D2D传输资源个数相同。
优选地，D2D资源分块信息可在相邻小区间交互，或者由操作维护管理实体(OAM)配置。
优选地，UE向基站上报D2D传输的干扰功率信息可以由以下之一触发：事件触发的，周期上报，或者定时器触发。
优选地，事件触发包括以下之一：1)UE检测到D2D传输的干扰或者资源冲突；优选地，可以是UE在对其它UE的D2D传输进行监听或接收时检测到D2D传输的干扰或资源冲突，或者，UE检测到自身的D2D传输收到干扰或发生资源冲突，比如通过监听或接收UE的反馈得知。2)UE收到基站的上报请求。3)UE有D2D传输资源需求或者有待传输的D2D信号或数据。
优选地，周期上报为UE收集每个资源粒度所对应的D2D干扰情况，并将平均值进行周期性上报。其中，资源单位可以是D2D发现资源单元，或SA资源单元，或数据资源单元或PRB。优选地，数据资源可以仅仅是UE感兴趣的D2D通信所对应的资源。
优选地，终端可通过UE终端辅助信息(AssistanceInformation)，测量报告(MeasurementReport)，RRC连接建立(Connection Setup)，跟踪区域更新请求(TAU Request)流程，或者新的消息上报上述D2D传输的干扰功率信息。
优选地，基站根据UE上报的D2D传输的干扰功率信息，进行干扰处理。优选地，干扰处理包括以下之一：
1)基站根据D2D传输的干扰功率信息为相应的D2D传输进行功率限制调整或资源调度调整。比如，如果相应D2D传输为小区内的传输，D2D传输的干扰功率信息显示该D2D传输受到较高干扰或者干扰功率较大或者UE对相应D2D传输所期望的功率较高，则基站将相应D2D传输的功率限制值提高，并调度到受到干扰较小的资源。
2)基站根据UE上报的D2D传输的干扰功率信息，向相邻基站报告D2D传输的干扰功率信息。优选地，基站根据UE上报的D2D传输的干扰功率信息，和或相邻基站的D2D资源(池)信息，得到可能的干扰源小区/基站。优选地，向相邻基站报告D2D传输的干扰功率信息是指，基站向可能的干扰源小区/基站报告D2D传输的干扰功率信息。优选地，UE上报的D2D传输的干扰功率信息中包含所在小区/基站标识。优选地，D2D传输的干扰功率信息表示相应D2D传输受到的干扰功率情况或D2D传输的期望功率或功率限制。
优选地，相邻基站收到D2D传输的干扰功率信息后，根据信息进行相应的干扰协调。比如，当D2D传输的干扰功率信息为高或超过一定门限值时，则相邻基站在该资源上尽量不调度易对该D2D传输产生干扰的蜂窝传输或D2D传输，比如处于小区边缘的UE相关的传输或功率较高的传输。
3)基站将D2D传输的干扰功率信息，通过OAM，或者向MME和或集中式信息中心上报的方式进行汇总和或共享。
优选地，将D2D传输的干扰功率信息，通过OAM，或者向MME和或集中式信息中心汇总，并将调整后的D2D传输的功率反馈给相应基站。
优选地，基站通过OAM，MME，和或集中式信息中心获得相邻基站的D2D传输的干扰功率信息。
本实施例还提供了一种D2D干扰协调装置，应用于基站中。该装置用于实现上述D2D干扰协调方法。图4是根据本发明实施例的D2D干扰协调装置的结构示意图，如图4所示，该装置包括：获取模块42和协调模块44，其中，获取模块42设置为获取D2D传输发射功率信息，其中，D2D传输发射功率信息用于指示在相应的无线资源上将调度的D2D传输的发射功率，或者指示在相应的无线资源上对D2D传输造成干扰的功率信息；协调模块44耦合至获取模块42，设置为根据D2D传输发射功率信息，进行干扰协调处理。
需要说明的是，本发明的实施例中所涉及到的模块、单元可以通过软件的方式实现，也可以通过硬件的方式来实现。本实施例中的所描述的模块、单元也可以设置在处理器中，例如，可以描述为：一种处理器包括获取模块42和协调模块44。其中，这些模块的名称在某种情况下并不构成对该模块本身的限定，例如，获取模块42还可以被描述为“设置为获取D2D传输发射功率信息的模块”。
并且，装置实施例中描述的D2D干扰协调装置对应于上述的方法实施例，其具体的实现过程在方法实施例中已经进行过详细说明，在此不再赘述。
图5是根据本发明实施例的D2D干扰协调装置的优选结构示意图一，如图5所示，优选地，上述协调模块44可以包括以下至少之一的单元：调度单元442、第一发送单元444或者第二发送单元446。其中，调度单元442设置为根据传输发射功率信息为D2D传输进行功率限制调整或资源调度调整；第一发送单元，设置为将D2D传输发射功率信息发送给基站的相邻基站；第二发送单元，设置为将D2D传输发射功率信息发送给处理中心。
图6是根据本发明实施例的D2D干扰协调装置的优选结构示意图二，如图6所示，优选地，调度单元442可以包括：第一确定子单元4422，设置为根据D2D传输发射功率信息，确定D2D传输的发射功率是否超过第一预设值，或者确定D2D传输的发射功率的等级；调度子单元4424，耦合至第一确定子单元4422，设置为在D2D传输 的发射功率超过第一预设值，或者D2D传输的发射功率等级高于预设等级的情况下，在相应的无线资源上优先调度不易对小区产生干扰的蜂窝传输或D2D传输，或者不调度任何传输。
图7是根据本发明实施例的D2D干扰协调装置的优选结构示意图三，如图7所示，优选地，调度单元442还可以包括：第二确定子单元4426，设置为根据D2D传输发射功率信息，确定对D2D传输造成干扰的功率是否超过第二预设值，或者确定D2D传输所期望的功率是否超过第三预设值；处理子单元4428，耦合至第二确定子单元4426，设置为在对D2D传输造成干扰的功率超过第二预设值，或者D2D传输所期望的功率超过第三预设值的情况下，提高D2D传输的功率限制，并将D2D传输调度到受到干扰较少的无线资源。
图8是根据本发明实施例的D2D干扰协调装置的优选结构示意图四，如图8所示，优选地，第一发送单元444可以包括：第三确定子单元4442，设置为根据D2D传输发射功率信息和/或相邻基站的D2D资源信息，确定可能的干扰源小区/基站；第一发送子单元4444，耦合至第三确定子单元4442，设置为将D2D传输发射功率信息发送给确定的可能的干扰源小区/基站。
图9是根据本发明实施例的D2D干扰协调装置的优选结构示意图五，如图9所示，优选地，获取模块42可以包括：接收单元422，设置为接收UE或者相邻基站发送的D2D传输发射功率信息；和/或生成单元424，设置为根据无线资源的干扰状况，生成D2D传输发射功率信息。
本实施例还提供了一种D2D干扰协调装置，应用于用户设备。该装置包括：发送模块，设置为发送用于指示在相应的无线资源上将调度的D2D传输的发射功率，或者指示在相应的无线资源上对D2D传输造成干扰的功率信息的D2D传输发射功率信息至基站，其中，D2D传输发射功率信息用于指示基站进行干扰协调处理。
本实施例还提供了一种基站，该基站包括上述应用于基站的D2D干扰协调装置。
本实施例还提供了一种用户设备，该用户设备包括上述应用于用户设备的D2D干扰协调装置。
为了使本发明实施例的技术方案和实现方法更加清楚，下面将结合优选的实施例对其实现过程进行详细描述。
方法实施例一
本实施例描述的是基站向相邻基站提供D2D传输的功率信息的方法。该方法包括以下步骤：
步骤1.基站向相邻基站提供D2D传输的功率信息。该信息指示对D2D传输造成干扰的功率信息或在将来一段时间对应资源上被调度的D2D传输发射功率信息。
优选地，该信息指示D2D传输的发射功率是否会超过一定门限或指示D2D传输的发射功率的等级，如高中低。相应的门限取值可随之一起提供，或通过默认配置或其他方式提供，随之只提供门限索引，或采用固定的默认取值。
优选地，D2D传输的发射功率信息包括以下信息之一：时间，D2D传输的组号，优先级，D2D传输对应的资源信息等。其中，时间指示D2D传输的发射功率的有效时间或D2D传输的持续时间。
步骤2.相邻基站收到该D2D传输的功率信息后，根据信息进行相应的干扰协调。比如，当发射功率超过一定门限值或功率等级为高时，则相邻基站在该资源上尽量不调度易受该D2D传输干扰的蜂窝传输或D2D传输，比如处于小区边缘的UE相关的传输或功率较高的传输。比如，当发射功率未超过一定门限值或功率等级为低时，则相邻基站在该资源上尽量调度不易对该D2D传输产生干扰的蜂窝传输或D2D传输，比如处于小区中心的UE相关的传输或功率较低的传输。
优选地，相邻基站收到D2D传输的功率信息后，根据信息中D2D传输的组号或优先级进行相应的干扰协调。比如，当D2D传输的优先级较高时，该基站在D2D传输的功率信息的相应资源上只调度小区中心UE的蜂窝传输或功率较低的传输或不调度任何UE的传输或UE的低优先级传输。当优先级较低时，该基站在D2D传输的功率信息的相应资源上调度小区中心或边缘UE的优先级较高的传输。
优选地，相邻基站收到D2D传输的功率信息后，根据信息中D2D传输的时间信息进行相应的干扰协调。比如，在D2D传输的对应持续时间内，该基站在D2D传输的功率信息的相应资源上只调度小区中心UE的蜂窝传输或功率较低的传输或不调度任何UE的传输或UE的低优先级传输。在对应时间后，可调度小区边缘UE的传输。
优选地，提供D2D传输的功率信息可以D2D传输资源单元，D2D通信资源单元，D2D调度分配单元或D2D发现资源单元为单位，或以PRB为单位。
优选地，可针对D2D发现/D2D通信进一步区分不同的比特图，其分别的长度与D2D资源包含的发现资源/SA资源/数据PRB个数相同。优选地，仅在D2D资源或分配给小区边缘UE的D2D资源上指示D2D传输的功率信息。
优选地，将小区的D2D资源进行分块，一部分划为小区中心UE进行D2D传输或功率较低的UE的D2D传输使用，一部分为小区边缘UE进行D2D传输或功率较高的UE的D2D传输使用。优选地，D2D传输的功率信息仅指示后者的D2D传输功率信息。即比特图长度与用于小区边缘UE的D2D传输或功率较高的UE的D2D传输资源个数相同。
优选地，D2D资源分块信息可在相邻小区间交互，如通过eN配置更新(Configuration Update)消息或负荷信息(Load information)消息，或者由OAM配置。
优选地，D2D传输的功率信息可与现有蜂窝传输的功率信息在一个IE中统一指示，也可单独指示。在统一指示时，也需指示哪些是对应D2D传输的功率信息。比如，D2D资源(池)信息也通过相邻小区间交互，或OAM配置的方式发送给邻区。邻区可根据该信息结合统一的传输功率信息得知相应的D2D传输的功率信息。优选地，在单独指示时，基站应忽略所收到的现有蜂窝传输的功率信息中D2D资源所对应的传输功率信息。
优选地，D2D传输的功率信息重用现有相对窄带发射功率IE或采用新的IE进行指示。进一步可增加相应的D2D标识，用于指示该信息为D2D传输的功率信息。
优选地，D2D传输的功率信息在X2Load information消息中携带。
优选地，将D2D传输的功率信息，通过OAM，或者向MME和或集中式信息中心上报的方式进行汇总和或共享给相邻基站。
方法实施例二
本实施例描述的是UE向基站上报D2D传输的干扰功率信息的方法。该方法包括以下步骤：
步骤1.UE向基站上报D2D传输的干扰功率信息。D2D传输的干扰功率信息指示对D2D传输造成干扰的功率信息或者对相应D2D传输所期望的功率限制信息。优选地，该信息指示对D2D传输造成干扰的发射功率是否超过了一定门限或指示对D2D传输造成干扰的发射功率的等级，如高中低，或者对相应D2D传输所期望的功率是否 超过一定门限或功率等级。相应的门限取值可随之一起提供，或通过默认配置或其他方式提供，随之只提供门限索引，或采用固定的默认取值。
优选地，D2D传输的发射功率信息包括以下信息之一：时间，D2D传输的组号，优先级，D2D传输对应的资源信息等。其中，时间指示D2D传输的发射功率的有效时间或D2D传输的持续时间。
步骤2.基站根据UE上报的D2D传输的干扰功率信息，进行干扰处理。优选地，干扰处理包括以下之一：
1)基站根据D2D传输的干扰功率信息为相应的D2D传输进行功率限制调整或者调度资源调整。比如，如果相应D2D传输为小区内的传输，D2D传输的干扰功率信息显示该D2D传输受到较高的干扰或者干扰功率较大或者UE对相应D2D传输所期望的功率较高，则基站将相应D2D传输的功率限制提高，并调度到受到干扰较小的资源。
2)基站根据UE上报的D2D传输的干扰功率信息，向相邻基站报告D2D传输的干扰功率信息。优选地，基站根据UE上报的D2D传输的干扰功率信息，和或相邻基站的D2D资源(池)信息，得到可能的干扰源小区/基站。优选地，向相邻基站报告D2D传输的干扰功率信息是指，基站向可能的干扰源小区/基站报告D2D传输的干扰功率信息。优选地，D2D传输的干扰功率信息表示相应D2D传输受到的干扰功率情况或D2D传输的期望功率或功率限制。
3)基站将UE上报的D2D传输的干扰功率信息，通过OAM，或者向MME和或集中式信息中心上报的方式进行汇总和或共享。
优选地，D2D传输的干扰功率信息可以D2D传输资源单元，D2D通信资源单元，D2D调度分配资源单元或D2D发现资源单元为单位，或以PRB为单位。
优选地，可针对D2D发现/D2D通信进一步区分不同的比特图，其分别的长度与D2D资源包含的发现资源/SA资源/数据PRB个数相同。
优选地，将小区的D2D资源进行分块，一部分划为小区中心UE进行D2D传输或功率较低的D2D传输使用，一部分为小区边缘UE进行D2D传输或功率较高的D2D传输使用。优选地，D2D干扰状态信息仅指示后者的D2D干扰状态信息。即比特图长度与用于小区边缘UE的D2D传输或功率较高的D2D传输资源个数相同。
优选地，D2D资源分块信息可在相邻小区间交互，或者由操作维护管理实体配置。
优选地，UE向基站上报D2D传输的干扰功率信息可以由以下之一触发：事件触发的，周期上报，或者定时器触发。
优选地，事件触发包括以下之一：1)UE检测到D2D传输的干扰或者资源冲突；优选地，可以是UE在对其它UE的D2D传输进行监听或接收时检测到D2D传输的干扰或资源冲突，或者，UE检测到自身的D2D传输收到干扰或发生资源冲突，比如通过监听或接收UE的反馈得知。2)UE收到基站的上报请求。3)UE有D2D传输资源需求或者有待传输的D2D信号或数据。
优选地，周期上报为UE收集每个资源粒度所对应的D2D干扰情况，并将平均值进行周期性上报。其中，资源单位可以是D2D发现资源单元，或SA资源单元，或数据资源单元或PRB。优选地，数据资源可以仅仅是UE感兴趣的D2D通信所对应的资源。
优选地，终端可通过UE AssistanceInformation，MeasurementReport，RRC Connection Setup，TAU Request流程，或者新的消息上报上述D2D传输的干扰功率信息。
优选地，基站通过OAM，MME，和或集中式信息中心获得相邻基站的D2D传输的干扰功率信息。
方法实施例三
本实施例描述的是UE向基站上报D2D传输的干扰功率信息，基站收到该信息后，向相邻基站提供D2D传输的干扰功率信息，进行干扰协调的方法。该方法包括以下步骤：
步骤1.UE向基站上报D2D传输的干扰功率信息。D2D传输的干扰功率信息指示对D2D传输造成干扰的功率信息或者对相应D2D传输所期望的功率限制信息。优选地，该信息指示对D2D传输造成干扰的发射功率是否超过了一定门限或指示对D2D传输造成干扰的发射功率的等级，如高中低，或者对相应D2D传输所期望的功率是否超过一定门限或功率等级。相应的门限取值可随之一起提供，或通过默认配置或其他方式提供，随之只提供门限索引，或采用固定的默认取值。
优选地，D2D传输的发射功率信息包括以下信息之一：时间，D2D传输的组号，优先级，D2D传输对应的资源信息等。其中，时间指示D2D传输的发射功率的有效时间或D2D传输的持续时间。
步骤2.基站收到该信息后，向相邻基站报告D2D传输的干扰功率信息。优选地，基站根据UE上报的D2D传输的干扰功率信息，和或相邻基站的D2D资源(池)信息，得到可能的干扰源小区/基站。优选地，向相邻基站报告D2D传输的干扰功率信息是指，基站向可能的干扰源小区/基站报告D2D传输的干扰功率信息。优选地，D2D传输的干扰功率信息表示相应D2D传输受到的干扰功率情况或D2D传输的期望功率或功率限制。
优选地，基站将UE上报的D2D传输的干扰功率信息，也可通过OAM，或者向MME和或集中式信息中心上报等其他方式进行汇总和或共享给相邻基站。
步骤3.相邻基站收到D2D传输的干扰功率信息后，根据信息进行相应的干扰协调。比如，当D2D传输的干扰功率信息为高或超过一定门限值时，则相邻基站在该资源上尽量不调度易对该D2D传输产生干扰的蜂窝传输或D2D传输，比如处于小区边缘的UE相关的传输或功率较高的传输。
优选地，D2D传输的干扰功率信息可以D2D传输资源单元，D2D通信资源单元，D2D调度分配资源单元或D2D发现资源单元为单位，或以PRB为单位。优化的，可以仅处于小区边缘的D2D UE上报干扰情况。
优选地，可针对D2D发现/D2D通信进一步区分不同的比特图，其分别的长度与D2D资源包含的发现资源/SA资源/数据PRB个数相同。
优选地，将小区的D2D资源进行分块，一部分划为小区中心UE进行D2D传输或功率较低的D2D传输使用，一部分为小区边缘UE进行D2D传输或功率较高的D2D传输使用。优选地，D2D干扰状态信息仅指示后者的D2D干扰状态信息。即比特图长度与用于小区边缘UE的D2D传输或功率较高的D2D传输资源个数相同。
优选地，D2D资源分块信息可在相邻小区间交互，或者由操作维护管理实体配置。
优选地，UE向基站上报D2D传输的干扰功率信息可以由以下之一触发：事件触发的，周期上报，或者定时器触发。
优选地，事件触发包括以下之一：1)UE检测到D2D传输的干扰或者资源冲突；优选地，可以是UE在对其它UE的D2D传输进行监听或接收时检测到D2D传输的干扰或资源冲突，或者，UE检测到自身的D2D传输收到干扰或发生资源冲突，比如通过监听或接收UE的反馈得知。2)UE收到基站的上报请求。3)UE有D2D传输资源需求或者有待传输的D2D信号或数据。
优选地，周期上报为UE收集每个资源粒度所对应的D2D干扰情况，并将平均值进行周期性上报。其中，资源单位可以是D2D发现资源单元，或SA资源单元，或数据资源单元或PRB。优选地，数据资源可以仅仅是UE感兴趣的D2D通信所对应的资源。
优选地，终端可通过UE AssistanceInformation，MeasurementReport，RRC Connection Setup，TAU Request流程，或者新的消息上报上述D2D传输的干扰功率信息。
优选地，基站通过OAM，MME，和或集中式信息中心获得相邻基站的D2D传输的干扰功率信息。
方法实施例四
本实施例描述的是UE向基站上报D2D传输的干扰功率信息，基站收到该信息后，进行干扰协调的方法。该方法包括以下步骤：
步骤1.UE向基站上报D2D传输的干扰功率信息。D2D传输的干扰功率信息指示对D2D传输造成干扰的功率信息或者对相应D2D传输所期望的功率限制信息。优选地，该信息指示对D2D传输造成干扰的发射功率是否超过了一定门限或指示对D2D传输造成干扰的发射功率的等级，如高中低，或者对相应D2D传输所期望的功率是否超过一定门限或功率等级。相应的门限取值可随之一起提供，或通过默认配置或其他方式提供，随之只提供门限索引，或采用固定的默认取值。
步骤2.基站收到该信息后，根据D2D传输的干扰功率信息为相应的D2D传输进行资源分配或调度调整，或者功率调整。比如，如果相应D2D传输为小区内的传输，D2D传输的干扰功率信息显示该D2D传输受到较高干扰或者干扰功率较大或者UE对相应D2D传输所期望的功率较高，则基站为相应D2D传输分配或调度其它资源或不易收到干扰的资源，或者提高其发射功率，并调度到干扰较小的资源。
优选地，D2D传输的发射功率信息包括以下信息之一：时间，D2D传输的组号，优先级，D2D传输对应的资源信息等。其中，时间指示D2D传输的发射功率的有效时间或D2D传输的持续时间。
优选地，D2D传输的干扰功率信息可以D2D传输资源单元，D2D通信资源单元，D2D调度分配资源单元或D2D发现资源单元为单位，或以PRB为单位。
优选地，可针对D2D发现/D2D通信进一步区分不同的比特图，其分别的长度与D2D资源包含的发现资源/SA资源/数据PRB个数相同。
优选地，将小区的D2D资源进行分块，一部分划为小区中心UE进行D2D传输或功率较低的D2D传输使用，一部分为小区边缘UE进行D2D传输或功率较高的D2D传输使用。优选地，D2D干扰状态信息仅指示后者的D2D干扰状态信息。即比特图长度与用于小区边缘UE的D2D传输或功率较高的D2D传输资源个数相同。
优选地，D2D资源分块信息可在相邻小区间交互，或者由操作维护管理实体配置。
优选地，UE向基站上报D2D传输的干扰功率信息可以由以下之一触发：事件触发的，周期上报，或者定时器触发。
优选地，事件触发包括以下之一：1)UE检测到D2D传输的干扰或者资源冲突；优选地，可以是UE在对其它UE的D2D传输进行监听或接收时检测到D2D传输的干扰或资源冲突，或者，UE检测到自身的D2D传输收到干扰或发生资源冲突，比如通过监听或接收UE的反馈得知。2)UE收到基站的上报请求。3)UE有D2D传输资源需求或者有待传输的D2D信号或数据。
优选地，周期上报为UE收集每个资源粒度所对应的D2D干扰情况，并将平均值进行周期性上报。其中，资源单位可以是D2D发现资源单元，或SA资源单元，或数据资源单元或PRB。优选地，数据资源可以仅仅是UE感兴趣的D2D通信所对应的资源。
优选地，终端可通过UE AssistanceInformation，MeasurementReport，RRC Connection Setup，TAU Request流程，或者新的消息上报上述D2D传输的干扰功率信息。
综上，通过本发明的上述实施例、优选实施例和实施方式，解决了D2D发现或D2D通信中，相邻小区间的D2D传输之间的干扰或资源冲突问题，以及D2D传输与蜂窝传输之间的干扰或资源冲突问题。采用本发明实施例方法和系统，与现有技术相比，能根据D2D传输实际应用时的策略与优先级，提供有针对性的干扰或冲突解决方法，提升D2D业务服务质量和用户体验。
工业实用性：本发明的上述实施例解决了小区间的D2D传输引起的干扰或资源冲突导致D2D传输和蜂窝传输的接收性能下降的问题，提高了接收性能。
显然，本领域的技术人员应该明白，上述的本发明的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，可选地，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本发明不限制于任何特定的硬件和软件结合。
以上仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (32)

  1. 一种设备到设备D2D干扰协调方法，包括：
    基站获取D2D传输发射功率信息，其中，所述D2D传输发射功率信息用于指示在相应的无线资源上将调度的D2D传输的发射功率，或者指示在相应的无线资源上对所述D2D传输造成干扰的功率信息；
    所述基站根据所述D2D传输发射功率信息，进行干扰协调处理。
  2. 根据权利要求1所述的方法，其中，基站获取D2D传输发射功率信息包括：
    所述基站接收用户设备UE或者相邻基站发送的所述D2D传输发射功率信息；和/或
    所述基站根据无线资源的干扰状况，生成所述D2D传输发射功率信息。
  3. 根据权利要求1所述的方法，其中，所述D2D传输发射功率信息包括以下至少之一的信息：
    指示D2D传输发射功率信息的有效时间或所述D2D传输的持续时间、所述D2D传输的组标识、所述D2D传输的优先级、所述D2D传输对应的资源信息。
  4. 根据权利要求1所述的方法，其中，根据所述D2D传输发射功率信息，进行干扰协调处理包括以下至少之一：
    所述基站根据所述D2D传输发射功率信息为所述D2D传输进行功率限制调整或资源调度调整；
    所述基站将所述D2D传输发射功率信息发送给所述基站的相邻基站；
    所述基站将所述D2D传输发射功率信息发送给处理中心。
  5. 根据权利要求4所述的方法，其中，所述基站根据所述D2D传输发射功率信息为所述D2D传输进行资源调度调整包括：
    所述基站根据所述D2D传输发射功率信息，确定所述D2D传输的发射功率是否超过第一预设值，或者确定所述D2D传输的发射功率的等级；
    所述基站在所述D2D传输的发射功率超过第一预设值，或者所述D2D传输的发射功率等级高于预设等级的情况下，在相应的无线资源上优先调度不易对小区产生干扰的蜂窝传输或D2D传输，或者不调度任何传输。
  6. 根据权利要求4所述的方法，其中，在所述D2D传输为小区内的传输的情况下，所述基站根据所述D2D传输发射功率信息为所述D2D传输进行功率限制调整包括：
    所述基站根据所述D2D传输发射功率信息，确定对所述D2D传输造成干扰的功率是否超过第二预设值，或者确定所述D2D传输所期望的功率是否超过第三预设值；
    所述基站在对所述D2D传输造成干扰的功率超过第二预设值，或者所述D2D传输所期望的功率超过第三预设值的情况下，提高所述D2D传输的功率限制值，并将所述D2D传输调度到受到干扰较少的无线资源。
  7. 根据权利要求4所述的方法，其中，在所述D2D传输发射功率信息包括所述D2D传输的优先级的情况下，所述基站根据所述D2D传输发射功率信息为所述D2D传输进行资源调度调整包括：
    所述基站在所述D2D传输的优先级高于第二预设值的情况下，在所述D2D传输发射功率信息对应的无线资源上只调度小区中心UE的蜂窝传输/D2D传输，或功率较低的传输或不调度任何UE的传输；和/或
    所述基站在所述D2D传输的优先级不高于第二预设值的情况下，在所述D2D传输的无线资源上调度小区中心的传输或功率较低的传输或边缘UE的优先级较高的传输。
  8. 根据权利要求4所述的方法，其中，在所述D2D传输发射功率信息包括所述D2D传输的持续时间的情况下，所述基站根据所述D2D传输发射功率信息为所述D2D传输进行功率限制调整或资源调度调整包括：
    所述基站在所述D2D传输的持续时间内，在所述D2D传输发射功率信息对应的无线资源上只调度小区中心UE的蜂窝传输/D2D传输或功率较低的传输或不调度任何UE的传输或不调度UE的优先级较低的传输；和/或
    所述基站在所述D2D传输的持续时间后，在所述D2D传输发射功率信息对应的无线资源上调度小区边缘UE的传输。
  9. 根据权利要求4所述的方法，其中，所述基站将所述D2D传输发射功率信息发送给所述基站的相邻基站包括：
    所述基站根据所述D2D传输发射功率信息，和/或所述相邻基站的D2D资源信息，确定可能的干扰源小区/基站；
    所述基站将所述D2D传输发射功率信息发送给确定的所述可能的干扰源小区/基站。
  10. 根据权利要求4所述的方法，其中，所述处理中心包括以下至少之一：
    操作维护管理实体OAM、移动管理实体MME或者集中式信息中心。
  11. 根据权利要求1至10中任一项所述的方法，其中，所述D2D传输发射功率信息对应的无线资源以D2D传输资源单元为单位、或者以D2D通信资源单元为单位、或者以D2D调度资源分配单元为单位、或者以D2D发现资源单元为单位、或者以物理资源块PRB为单位。
  12. 根据权利要求11所述的方法，其中，在所述D2D传输发射功率信息中携带的比特图中，D2D发现/D2D通信对应的比特图的长度分别与D2D资源包含的发现资源或调度分配SA资源或数据PRB的个数相同。
  13. 根据权利要求11所述的方法，其中，在基站的小区的D2D资源被划分为小区中心UE进行D2D传输或功率较低的UE的D2D传输使用的部分和小区边缘UE进行D2D传输或功率较高的UE的D2D传输使用的部分的情况下，所述D2D传输发射功率信息中携带的比特图长度与用于小区边缘UE的D2D传输或功率较高的UE的D2D传输资源个数相同。
  14. 根据权利要求13所述的方法，其中，所述D2D资源的分块信息通过相邻小区间的交互进行配置，或者由OAM配置。
  15. 根据权利要求1所述的方法，其中，所述D2D传输发射功率信息与现有蜂窝资源的干扰状态信息在一个信息单元IE中统一指示，或者单独指示。
  16. 根据权利要求1所述的方法，其中，所述D2D传输发射功率信息重用过载指示信息，或者采用新的信息单元进行指示。
  17. 根据权利要求1所述的方法，其中，所述D2D传输发射功率信息携带在X2负荷信息消息中。
  18. 一种设备到设备D2D干扰协调方法，包括：
    用户设备UE发送用于指示在相应的无线资源上将调度的D2D传输的发射功率，或者指示在相应的无线资源上对所述D2D传输造成干扰的功率信息的D2D传输发射功率信息至基站，其中，所述D2D传输发射功率信息用于指示所述基站进行干扰协调处理。
  19. 根据权利要求18所述的方法，其中，所述D2D传输发射功率信息包括以下至少之一的信息：
    指示D2D传输发射功率信息的有效时间或所述D2D传输的持续时间、所述D2D传输的组标识、所述D2D传输的优先级、所述D2D传输对应的资源信息。
  20. 根据权利要求18所述的方法，其中，UE通过以下之一的方式触发向基站发送所述D2D传输发射功率信息：
    事件触发、周期上报、定时器触发。
  21. 根据权利要求20所述的方法，其中，所述事件触发包括以下至少之一的方式：
    所述UE检测到D2D传输的干扰或者资源冲突；
    所述UE收到所述基站指示所述UE上报所述D2D传输发射功率信息的上报请求；
    所述UE有D2D传输资源需求或者有待传输的D2D信号或数据。
  22. 根据权利要求20所述的方法，其中，所述周期上报包括：
    所述UE收集每个资源粒度所对应的D2D干扰程度，并将所述D2D干扰程度的平均值进行周期性上报。其中，所述资源粒度的资源单位包括以下至少之一：D2D发现资源单元、或调度分配SA资源单元、或数据资源单元、或PRB。
  23. 根据权利要求18至22中任一项所述的方法，其中，UE发送所述D2D传输发射功率信息至所述基站包括：
    所述UE通过终端辅助信息、测量报告、无线资源控制协议RRC连接建立、跟踪区域更新请求流程中的一个，或者新的消息上报所述D2D传输发射功率信息。
  24. 一种设备到设备D2D干扰协调装置，应用于基站，包括：
    获取模块，设置为获取D2D传输发射功率信息，其中，所述D2D传输发射功率信息用于指示在相应的无线资源上将调度的D2D传输的发射功率，或者指示在相应的无线资源上对所述D2D传输造成干扰的功率信息；
    协调模块，设置为根据所述D2D传输发射功率信息，进行干扰协调处理。
  25. 根据权利要求24所述的装置，其中，所述协调模块包括以下至少之一：
    调度单元，设置为根据所述D2D传输发射功率信息为所述D2D传输进行功率限制调整或资源调度调整；
    第一发送单元，设置为将所述D2D传输发射功率信息发送给所述基站的相邻基站；
    第二发送单元，设置为将所述D2D传输发射功率信息发送给处理中心。
  26. 根据权利要求25所述的装置，其中，所述调度单元包括：
    第一确定子单元，设置为根据所述D2D传输发射功率信息，确定所述D2D传输的发射功率是否超过第一预设值，或者确定所述D2D传输的发射功率的等级；
    调度子单元，设置为在所述D2D传输的发射功率超过第一预设值，或者所述D2D传输的发射功率等级高于预设等级的情况下，在相应的无线资源上优先调度不易对小区产生干扰的蜂窝传输或D2D传输，或者不调度任何传输。
  27. 根据权利要求25所述的装置，其中，所述调度单元包括：
    第二确定子单元，设置为根据所述D2D传输发射功率信息，确定对所述D2D传输造成干扰的功率是否超过第二预设值，或者确定所述D2D传输所期望的功率是否超过第三预设值；
    处理子单元，设置为在对所述D2D传输造成干扰的功率超过第二预设值，或者所述D2D传输所期望的功率超过第三预设值的情况下，提高所述D2D传输的功率限制值，并将所述D2D传输调度到受到干扰较少的无线资源。
  28. 根据权利要求25所述的装置，其中，所述第一发送单元包括：
    第三确定子单元，设置为根据所述D2D传输发射功率信息和/或所述相邻基站的D2D资源信息，确定可能的干扰源小区/基站；
    第一发送子单元，设置为将所述D2D传输发射功率信息发送给确定的所述可能的干扰源小区/基站。
  29. 根据权利要求24所述的装置，其中，所述获取模块包括：
    接收单元，设置为接收UE或者相邻基站发送的所述D2D传输发射功率信息；和/或
    生成单元，设置为根据无线资源的干扰状况，生成所述D2D传输发射功率信息。
  30. 一种设备到设备D2D干扰协调装置，应用于用户设备，包括：
    发送模块，设置为发送用于指示在相应的无线资源上将调度的D2D传输的发射功率，或者指示在相应的无线资源上对所述D2D传输造成干扰的功率信息的D2D传输发射功率信息至基站，其中，所述D2D传输发射功率信息用于指示所述基站进行干扰协调处理。
  31. 一种基站，包括：如权利要求24至29中任一项所述的D2D干扰协调装置。
  32. 一种用户设备，包括：如权利要求30所述的D2D干扰协调装置。
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