WO2016054931A1 - 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
WO2016054931A1
WO2016054931A1 PCT/CN2015/082227 CN2015082227W WO2016054931A1 WO 2016054931 A1 WO2016054931 A1 WO 2016054931A1 CN 2015082227 W CN2015082227 W CN 2015082227W WO 2016054931 A1 WO2016054931 A1 WO 2016054931A1
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Prior art keywords
interference
transmission
base station
resource
state information
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PCT/CN2015/082227
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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 US15/518,046 priority Critical patent/US20170339703A1/en
Publication of WO2016054931A1 publication Critical patent/WO2016054931A1/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
    • 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
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices

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 is performed through interaction between cells, and the main methods are:
  • An overload indicator (OI) mechanism provides an interference overload report of each resource block (RB) to a neighboring base station in the form of an array list, and each element corresponds to each RB of the uplink, and the value may be It is high, medium, and low, representing different degrees of interference.
  • 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, apparatus, and base station to solve at least the problem of D2D transmission and reception performance degradation of cellular transmission caused by interference or resource collision caused by D2D transmission between cells.
  • a device-to-device interference coordination method including: acquiring, by a base station, D2D interference state information, where the D2D interference state information is used to indicate D2D transmission on a corresponding radio resource. The degree of interference; the base station performs interference coordination processing according to the D2D interference state information.
  • the acquiring, by the base station, the D2D interference state information includes: the base station receiving the D2D interference state information sent by the UE or the neighboring base station; and/or the base station generating the D2D interference state information according to the interference state of the radio resource.
  • the D2D interference state information includes information of at least one of: a group identifier of the D2D transmission, a priority of the D2D transmission, and resource information corresponding to the D2D transmission.
  • performing interference coordination processing according to the D2D interference state information includes at least one of: the base station performing resource allocation or scheduling adjustment for the D2D transmission according to the D2D interference state information;
  • the base station sends the D2D interference state information to a neighboring base station of the base station; the base station sends the D2D interference state information to a processing center.
  • the base station determining, by the base station, the resource allocation or the scheduling adjustment for the D2D transmission according to the D2D interference state information, the base station determining, according to the D2D interference state information, whether the D2D interference level of the D2D transmission is higher than the first pre-predetermined Setting a value; if the D2D interference level is higher than the first preset value, the base station preferentially schedules a cellular transmission or a D2D transmission that is not easy to interfere with the cell on the radio resource of the D2D transmission, or does not schedule any transmission.
  • the base station performs resource allocation or scheduling adjustment for the D2D transmission according to the D2D interference state information, where the base station is in the In the case that the priority of the D2D transmission is higher than the second preset value, only the cell/D2D transmission of the cell center UE or the lower power transmission or no UE is scheduled on the radio resource corresponding to the D2D interference state information. And/or the base station scheduling the cell center or the edge UE with a higher priority on the radio resource of the D2D transmission if the priority of the D2D transmission is not higher than the second preset value transmission.
  • the transmitting by the base station, the D2D interference state information to the neighboring base station of the base station, the base station determining, according to the D2D interference state information, and/or the D2D resource information of the neighboring base station, Interference source cell/base station; the base station sends the D2D interference state information to the determined possible interference source cell/base station.
  • the processing center comprises at least one of: an Operation Management Maintenance Entity (OAM), a Mobility Management Entity (MME), or a centralized information center.
  • OAM Operation Management Maintenance Entity
  • MME Mobility Management Entity
  • centralized information center e.g., a centralized information center.
  • the radio resource corresponding to the D2D interference state information is in units of D2D transmission resource units, or in units of D2D communication resource units, or in units of D2D scheduling resource allocation units, or in units of D2D discovery resource units, or In units of PRB.
  • the length of the bitmap corresponding to the D2D discovery/D2D communication and the discovery resource or Scheduling Assignment (SA) resource or data included in the D2D resource respectively.
  • SA Scheduling Assignment
  • 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 bit map length is the same as the D2D transmission resource used for the cell edge UE or the D2D transmission resource of the UE with higher power.
  • the block information of the D2D resource is configured by interaction between adjacent cells, or is configured by OAM.
  • the D2D interference state information and the interference state information of the existing cellular resource are uniformly indicated in one information unit (IE), or are indicated separately.
  • IE information unit
  • the D2D interference status information reuses the overload indication information or is indicated by a new information unit.
  • the D2D interference state information is carried in an X2 (interconnect interface between base stations) load information message.
  • a device-to-device interference coordination method including: a user equipment (UE) transmitting D2D interference state information indicating a degree of interference of D2D transmission on a corresponding radio resource. And to the base station, where the D2D interference state information is used to instruct the base station to perform interference coordination processing.
  • UE user equipment
  • the D2D interference state information includes information of at least one of: a group identifier of the D2D transmission, a priority of the D2D transmission, and resource information corresponding to the D2D transmission.
  • the UE triggers sending the D2D interference state information to the base station by using one of the following: event triggering, periodic reporting, and timer triggering.
  • the event triggering includes: the UE detecting an interference or a resource conflict of the D2D transmission; and/or the UE receiving the reporting request that the base station instructs the UE to report the D2D interference state information.
  • 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 transmission resource D2D communication resource unit, a D2D discovery resource unit, or an SA resource unit, or a D2D data resource, or a physical resource block (PRB).
  • PRB physical resource block
  • the sending, by the UE, the D2D interference state information to the base station includes: 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 one.
  • the message reports the D2D interference status information.
  • RRC Radio Resource Control Protocol
  • a device-to-device interference coordination apparatus which is applied to a base station, and includes: an obtaining module, configured to acquire D2D interference state information, where the D2D interference state The information is used to indicate the degree of interference of the D2D transmission on the corresponding radio resource; the coordination module is configured to perform interference coordination processing according to the D2D interference status information.
  • the coordination module includes at least one of: a scheduling unit, configured to perform resource allocation or scheduling adjustment for the D2D transmission according to the D2D interference state information; and a first sending unit, configured to: use the D2D interference state The information is sent to the neighboring base station of the base station, and the second sending unit is configured to send the D2D interference state information to the processing center.
  • a scheduling unit configured to perform resource allocation or scheduling adjustment for the D2D transmission according to the D2D interference state information
  • a first sending unit configured to: use the D2D interference state The information is sent to the neighboring base station of the base station, and the second sending unit is configured to send the D2D interference state information to the processing center.
  • the scheduling unit includes: a first determining subunit, configured to determine, according to the D2D interference state information, whether a D2D interference degree of the D2D transmission is higher than a first preset value; a scheduling subunit, configured to When the D2D interference level is higher than the first preset value, the cellular transmission or the D2D transmission that is not easy to interfere with the cell is preferentially scheduled on the radio resource of the D2D transmission, or no transmission is scheduled.
  • a first determining subunit configured to determine, according to the D2D interference state information, whether a D2D interference degree of the D2D transmission is higher than a first preset value
  • a scheduling subunit configured to When the D2D interference level is higher than the first preset value, the cellular transmission or the D2D transmission that is not easy to interfere with the cell is preferentially scheduled on the radio resource of the D2D transmission, or no transmission is scheduled.
  • the first sending unit includes: a second determining subunit, configured to determine a possible interferer cell/base station according to the D2D interference state information and/or D2D resource information of the neighboring base station; And a sending subunit, configured to send the D2D interference state information to the determined potential interferer cell/base station.
  • the acquiring module includes: a receiving unit, configured to receive the D2D interference state information sent by the UE or the neighboring base station; and/or a generating unit, configured to generate the D2D interference state according to an interference condition of the radio resource information.
  • a device-to-device interference coordination apparatus which is applied to a user equipment, and includes: a sending module, configured to send an interference level for indicating D2D transmission on a corresponding radio resource.
  • the D2D interference state information is sent to the base station, where the D2D interference state information is used to instruct the base station to perform interference coordination processing.
  • 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 base station acquires the D2D interference state information, where the D2D interference state information is used to indicate the interference degree of the D2D transmission on the corresponding radio resource; the base station performs the interference coordination processing manner according to the D2D interference state information, and solves the problem.
  • the interference caused by D2D transmission between cells or the resource collision causes the D2D transmission and the reception performance of the cellular transmission to be degraded, and the reception performance is improved, thereby improving the 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 diagram 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 interference state information, where the D2D interference state information is used to indicate the interference level of the D2D transmission on the corresponding radio resource;
  • Step S304 the base station performs interference coordination processing according to the D2D interference state information.
  • the base station obtains the D2D interference state information that can be used to indicate the interference degree of the D2D transmission on the corresponding radio resource, so that the base station can determine the interference level of the corresponding radio resource according to the D2D interference state information to the radio resource.
  • Interference coordination processing is performed to solve the problem that D2D transmission and the reception performance of the cellular transmission are degraded due to interference caused by D2D transmission between cells, and the reception performance and D2D communication service quality are improved, thereby improving the user experience.
  • the D2D interference state information acquired by the base station may be generated by the base station according to the interference condition of the radio resource, or may be reported by the neighboring base station, or may be reported by the user equipment (UE).
  • UE user equipment
  • the base station generates D2D interference state information, or after receiving the D2D interference state information shared by the UE/other neighboring base stations, the base station sends the D2D interference state information to the neighboring base station for interference coordination processing.
  • the D2D interference state information indicates the degree of interference of the D2D transmission, which may be high, medium, or low, respectively representing different degrees of interference.
  • the interference state information of the D2D includes one of the following information: a group number of the D2D transmission, a priority, resource information corresponding to the D2D transmission, and the like.
  • the neighboring base station After receiving the D2D interference state information, the neighboring base station performs corresponding interference coordination according to the information. For example, when the interference state information is high, the neighboring base station does not schedule, on the resource, the cellular transmission or the D2D transmission that is likely to interfere with the D2D transmission, such as UE-related transmission at the cell edge or transmission with higher power. .
  • the neighboring base station after receiving the interference state information of the D2D, 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 cellular transmission/D2D transmission or the lower power transmission of the cell center UE or does not schedule the transmission of any UE on the corresponding resource of the D2D interference state information. 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 D2D interference state information.
  • the providing D2D interference state information is in units of 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 a cell edge UE for D2D transmission or a higher power D2D.
  • 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 D2D interference state information may be uniformly indicated in an IE with the existing cellular interference state information, or may be separately indicated.
  • the unified indication it is also necessary to indicate which interference state information corresponding to D2D.
  • 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 corresponding D2D interference state information according to the information combined with the unified interference state information.
  • the base station should ignore the interference state information corresponding to the D2D resources in the received existing cellular interference state information.
  • the D2D interference status information is reused by an existing overload indicator (OI) Information Element (IE) or indicated by a new IE.
  • OI overload indicator
  • IE Information Element
  • a corresponding D2D identifier may be added to indicate that the information is D2D interference status information.
  • the D2D interference status information is carried in an X2 Load information message.
  • the D2D interference state information is summarized or shared to the neighboring base station by OAM, or reported to the mobility management entity (MME) and or the centralized information center.
  • MME mobility management entity
  • the base station reports the interference state information of the D2D to the neighboring base station according to the D2D interference state information reported by the UE.
  • the embodiment of the present invention further provides a D2D interference coordination method, which is applied to a user equipment, and includes: the user equipment sends D2D interference state information indicating a degree of interference of D2D transmission on a corresponding radio resource to a base station, where D2D The interference status information is used to instruct the base station to perform interference coordination processing.
  • the D2D interference status information indicates a D2D interference level report, which may be high, medium, or low, respectively representing different degrees of interference.
  • the interference state information of the D2D includes one of the following information: a group number of the D2D transmission, a priority, resource information corresponding to the D2D transmission, and the like.
  • the D2D interference state information 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.
  • 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 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 reporting of the D2D interference status information by the UE to the base station may be triggered by one of the following: event triggered, 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 is interfered or a resource conflict occurs, such as by monitoring or receiving feedback from the UE. 2) The UE receives a report request from the base station.
  • 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 D2D interference status information through the UE terminal assistance information (AssistanceInformation), the measurement report (MeasurementReport), the RRC connection setup (Connection Setup), the tracking area update request (TAU Request) process, or the new message.
  • AssistanceInformation the UE terminal assistance information
  • MeasurementReport the measurement report
  • RRC connection setup Connection Setup
  • TAU Request the tracking area update request
  • the base station performs interference processing according to the D2D interference state information reported by the UE.
  • the interference processing comprises one of the following:
  • the base station performs resource allocation or scheduling adjustment for the corresponding D2D transmission according to the D2D interference status information. For example, if the corresponding D2D transmission is a transmission within a cell, and the D2D interference status information indicates that the D2D transmission is subject to higher interference, the base station allocates or schedules other resources or resources that are not susceptible to interference for the corresponding D2D transmission.
  • the base station reports the interference state information of the D2D to the neighboring base station according to the D2D interference state information reported by the UE.
  • the base station obtains a possible interference source cell/base station according to the D2D interference state information reported by the UE and the D2D resource (pool) information of the neighboring base station.
  • reporting D2D interference status information to neighboring base stations is The base station reports D2D interference status information to a possible interferer cell/base station.
  • the D2D interference status information reported by the UE includes the located cell/base station identifier.
  • the neighboring base station After receiving the D2D interference state information, the neighboring base station performs corresponding interference coordination according to the information. For example, when the interference state information is high, the neighboring base station does not schedule, on the resource, the cellular transmission or the D2D transmission that is likely to interfere with the D2D transmission, such as UE-related transmission at the cell edge or transmission with higher power. .
  • the base station aggregates and shares the D2D interference status information reported by the UE through OAM or reports to the MME and the centralized information center.
  • the base station obtains D2D interference state information of the neighboring base station through the OAM, the MME, and or the centralized information center.
  • This embodiment also provides a D2D interference coordination apparatus, which is applied to a base station.
  • the device is used to implement the above-mentioned D2D interference coordination method applied to a base station.
  • 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 interference state information, where The D2D interference status information is used to indicate the degree of interference of the D2D transmission on the corresponding radio resource; the coordination module 44 is coupled to the acquisition module 42 and configured to perform interference coordination processing according to the D2D interference status 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 set to acquire D2D interference state 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 further include a unit of at least one of the following: a scheduling unit 442 coupled to the acquisition module 42 and configured to be based on D2D interference.
  • the status information is resource allocation or scheduling adjustment for the D2D transmission;
  • the first sending unit 444 is coupled to the obtaining module 42 and configured to send the D2D interference status information to the neighboring base station of the base station;
  • the second sending unit 446 is coupled to the obtaining module 42. , set to send D2D interference status 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 further include a first determining subunit 4422 and a scheduling subunit 4424, where the first determining subunit 4422 is configured.
  • the scheduling sub-unit 4424 is coupled to the first determining sub-unit 4422, and is configured to preferentially schedule the radio resources on the D2D transmission to be generated in the case that the D2D interference level is higher than the first preset value. Interfering cellular or D2D transmissions, or not scheduling any transmissions.
  • FIG. 7 is a third 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 further include a second determining subunit 4442 and a first transmitting subunit 4444, where the second determining sub The unit 4442 is configured to determine a possible interference source cell/base station according to the D2D interference state information and/or the D2D resource information of the neighboring base station; the first sending subunit 4444 is coupled to the second determining subunit 4442, and is configured to set the D2D The interference status information is sent to the determined possible interferer cell/base station.
  • 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 acquisition module 42 may further include at least one of the following: a receiving unit 422 and a generating unit 424.
  • the receiving unit 422 is configured to receive D2D interference state information sent by the UE or the neighboring base station; and the generating unit 424 is configured to generate D2D interference state information according to the interference condition of the radio resource.
  • the embodiment further provides a base station, which includes the above-mentioned D2D interference coordination apparatus applied to the base station.
  • the present embodiment further provides another D2D interference coordination apparatus, which is applied to a user equipment, the apparatus includes a sending module 52, wherein the sending module 52 is configured to send interference for indicating D2D transmission on a corresponding radio resource.
  • the degree of D2D interference state information is sent to the base station, where the D2D interference state information is used to instruct the base station to perform interference coordination processing.
  • the embodiment further provides a user equipment, which includes the above-mentioned D2D interference coordination device applied to the user equipment.
  • This embodiment describes a method in which a base station provides D2D interference state information to a neighboring base station.
  • the method includes the following steps:
  • Step 1 The base station provides D2D interference status information to the neighboring base station.
  • the D2D interference status information indicates the degree of interference of the D2D transmission, which may be high, medium, or low, respectively representing different degrees of interference.
  • the interference state information of the D2D includes one of the following information: a group number of the D2D transmission, a priority, corresponding resource information, and the like.
  • Step 2 After receiving the D2D interference status information, the neighboring base station performs corresponding interference coordination according to the information. For example, when the interference state information is high, the neighboring base station does not schedule, on the resource, the cellular transmission or the D2D transmission that is likely to interfere with the D2D transmission, such as UE-related transmission at the cell edge or transmission with higher power. .
  • the neighboring base station After receiving the interference state information of the D2D, the neighboring base station performs corresponding interference coordination according to the group number or priority of the D2D transmission in the information.
  • the base station 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 on the corresponding resource of the interference state information of the D2D.
  • the base station schedules a higher priority transmission of the cell center or the edge UE on the corresponding resource of the D2D interference state information.
  • the D2D interference state information 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.
  • the foregoing interference sensitivity information for providing the D2D resource 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 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 neighboring cells, such as through an eNB Configuration Update message or a load information message, or configured by OAM.
  • the D2D interference state information may be uniformly indicated in an IE with the existing cellular interference state information, or may be separately indicated.
  • the unified indication it is also necessary to indicate which interference state information corresponding to D2D.
  • 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 corresponding D2D interference state information according to the information combined with the unified interference state information.
  • the base station should ignore the interference state information corresponding to the D2D resources in the received existing cellular interference state information.
  • the D2D interference status information is reused by the existing OI IE or indicated by a new IE. Further, a corresponding D2D identifier may be added to indicate that the information is D2D interference status information.
  • the D2D interference status information is carried in the X2Load information message.
  • the D2D interference state information is summarized or shared to the neighboring base station by means of OAM or reporting to the MME and the centralized information center.
  • the base station reports the interference state information of the D2D to the neighboring base station according to the D2D interference state information reported by the UE.
  • This embodiment describes a method for a UE to report D2D interference state information to a base station.
  • the method includes the following steps:
  • Step 1 The UE reports D2D interference status information to the base station.
  • the D2D interference status information indicates a D2D interference level report, which may be high, medium, or low, respectively representing different degrees of interference.
  • Step 2. The base station performs interference processing according to the D2D interference status information reported by the UE.
  • the interference processing comprises one of the following:
  • the base station performs resource allocation or scheduling adjustment for the corresponding D2D transmission according to the D2D interference status information. For example, if the corresponding D2D transmission is a transmission within a cell, and the D2D interference status information indicates that the D2D transmission is subject to higher interference, the base station allocates or schedules other resources or resources that are not susceptible to interference for the corresponding D2D transmission.
  • the base station reports the interference state information of the D2D to the neighboring base station according to the D2D interference state information reported by the UE.
  • the base station obtains a possible interference source cell/base station according to the D2D interference state information reported by the UE and the D2D resource (pool) information of the neighboring base station.
  • reporting the D2D interference state information to the neighboring base station means that the base station reports the D2D interference state information to the possible interferer cell/base station.
  • the base station aggregates and shares the D2D interference status information reported by the UE through OAM or reports to the MME and the centralized information center.
  • the interference state information of the D2D includes one of the following information: a group number of the D2D transmission, a priority, resource information corresponding to the D2D transmission, and the like.
  • the D2D interference state information 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.
  • 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 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 reporting of the D2D interference status information by the UE to the base station may be triggered by one of the following: event triggered, 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 is interfered or a resource conflict occurs, such as by monitoring or receiving feedback from the UE. 2) The UE receives a report request from the base station.
  • 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 D2D interference status information by using the UE AssistanceInformation, MeasurementReport, RRC Connection Setup, TAU Request procedure, or a new message.
  • the base station obtains D2D interference state information of the neighboring base station through the OAM, the MME, and or the centralized information center.
  • This embodiment describes a method for the UE to report D2D interference state information to the base station, and after receiving the information, the base station provides D2D interference state information to the neighboring base station to perform interference coordination.
  • the method includes the following steps:
  • Step 1 The UE reports D2D interference status information to the base station.
  • the D2D interference status information indicates a D2D interference level report, which may be high, medium, or low, respectively representing different degrees of interference.
  • the base station reports the interference status information of the D2D to the neighboring base station.
  • the base station obtains a possible interference source cell/base station according to the D2D interference state information reported by the UE and the D2D resource (pool) information of the neighboring base station.
  • reporting the D2D interference state information to the neighboring base station means that the base station reports the D2D interference state information to the possible interferer cell/base station.
  • the base station may summarize or share the D2D interference status information reported by the UE to the neighboring base station through OAM, or other manners such as reporting to the MME and the centralized information center.
  • Step 3 After receiving the D2D interference status information, the neighboring base station performs corresponding interference coordination according to the information. For example, when the interference state information is high, the neighboring base station does not schedule, on the resource, the cellular transmission or the D2D transmission that is likely to interfere with the D2D transmission, such as UE-related transmission at the cell edge or transmission with higher power. .
  • the interference state information of the D2D includes one of the following information: a group number of the D2D transmission, a priority, resource information corresponding to the D2D transmission, and the like.
  • the D2D interference state information 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.
  • 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 reporting of the D2D interference status information by the UE to the base station may be triggered by one of the following: event triggered, 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 is interfered or a resource conflict occurs, such as by monitoring or receiving feedback from the UE. 2) The UE receives a report request from the base station.
  • 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 D2D interference status information by using the UE AssistanceInformation, MeasurementReport, RRC Connection Setup, TAU Request procedure, or a new message.
  • the base station obtains D2D interference state information of the neighboring base station through the OAM, the MME, and or the centralized information center.
  • This embodiment describes a method for the UE to report D2D interference status information to the base station, and after receiving the information, the base station performs interference coordination.
  • the method includes the following steps:
  • Step 1 The UE reports D2D interference status information to the base station.
  • the D2D interference status information indicates a D2D interference level report, which may be high, medium, or low, respectively representing different degrees of interference.
  • Step 2 the base station performs resource allocation or scheduling adjustment for the corresponding D2D transmission according to the D2D interference status information. For example, if the corresponding D2D transmission is a transmission within a cell, and the D2D interference status information indicates that the D2D transmission is subject to higher interference, the base station allocates or schedules other resources or resources that are not susceptible to interference for the corresponding D2D transmission.
  • the interference state information of the D2D includes one of the following information: a group number of the D2D transmission, a priority, resource information corresponding to the D2D transmission, and the like.
  • the foregoing interference sensitivity information for providing the D2D resource 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 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 reporting of the D2D interference status information by the UE to the base station may be triggered by one of the following: event triggered, 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 is interfered or a resource conflict occurs, such as by monitoring or receiving feedback from the UE. 2) The UE receives a report request from the base station.
  • 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 D2D interference status information by using the UE AssistanceInformation, MeasurementReport, RRC Connection Setup, TAU Request procedure, or a new message.
  • the problem of interference or resource conflict between D2D transmissions between adjacent cells in D2D discovery or D2D communication, and D2D transmission and cellular are solved.
  • Interference or resource conflicts between transmissions are solved.
  • the method and system of the present invention can provide targeted interference or conflict resolution methods according to policies and priorities of D2D transmission actual applications, and improve D2D service quality and user experience.
  • the present invention solves the problem that D2D transmission and reception performance of cellular transmission are degraded due to interference or resource collision caused by D2D transmission between cells, 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干扰状态信息，其中，D2D干扰状态信息用于指示在相应的无线资源上的D2D传输的干扰程度（S302）；基站根据D2D干扰状态信息，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相互干扰问题，通过小区间的交互进行干扰协调，主要方法为：
过载指示(overload indicator，OI)机制：以数组列表的形式向相邻基站提供每个资源块(Resource Block，RB)的干扰过载程度报告，每个元素对应于上行的每个RB，取值可以为高，中，低，分别代表不同的干扰程度。
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，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干扰协调方法，包括：基站获取D2D干扰状态信息，其中，所述D2D干扰状态信息用于指示在相应的无线资源上的D2D传输的干扰程度；所述基站根据所述D2D干扰状态信息，进行干扰协调处理。
优选地，基站获取D2D干扰状态信息包括：所述基站接收UE或者相邻基站发送的所述D2D干扰状态信息；和/或所述基站根据无线资源的干扰状况，生成所述D2D干扰状态信息。
优选地，所述D2D干扰状态信息包括以下至少之一的信息：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干扰状态信息，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干扰状态信息为所述D2D传输进行资源分配或调度调整；所述 基站将所述D2D干扰状态信息发送给所述基站的相邻基站；所述基站将所述D2D干扰状态信息发送给处理中心。
优选地，所述基站根据所述D2D干扰状态信息为所述D2D传输进行资源分配或调度调整包括：所述基站根据D2D干扰状态信息，确定所述D2D传输的D2D干扰程度是否高于第一预设值；所述基站在所述D2D干扰程度高于第一预设值的情况下，在所述D2D传输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干扰状态信息包括所述D2D传输的优先级的情况下，所述基站根据所述D2D干扰状态信息为所述D2D传输进行资源分配或调度调整包括：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干扰状态信息对应的无线资源上只调度小区中心UE的蜂窝/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或边缘UE的优先级较高的传输。
优选地，所述基站将所述D2D干扰状态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干扰状态信息，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干扰状态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：操作管理维护实体(OAM)、移动管理实体(MME)或者集中式信息中心。
优选地，所述D2D干扰状态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PRB为单位。
优选地，在所述D2D干扰状态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，简称为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干扰状态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干扰状态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干扰状态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干扰状态信息携带在X2(基站之间的互联接口)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的D2D传输的干扰程度的D2D干扰状态信息至基站，其中，所述D2D干扰状态信息用于指示所述基站进行干扰协调处理。
优选地，所述D2D干扰状态信息包括以下至少之一的信息：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干扰状态信息：事件触发、周期上报、定时器触发。
优选地，所述事件触发包括：所述UE检测到D2D传输的干扰或者资源冲突；和/或所述UE收到所述基站指示所述UE上报所述D2D干扰状态信息的上报请求。
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传输资源D2D通信资源单元，D2D发现资源单元、或SA资源单元、或D2D数据资源、或物理资源块(PRB)。
优选地，UE发送所述D2D干扰状态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干扰状态信息。
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干扰协调装置，应用于基站，包括：获取模块，用于获取D2D干扰状态信息，其中，所述D2D干扰状态 信息用于指示在相应的无线资源上的D2D传输的干扰程度；协调模块，用于根据所述D2D干扰状态信息，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，用于根据所述D2D干扰状态信息为所述D2D传输进行资源分配或调度调整；第一发送单元，用于将所述D2D干扰状态信息发送给所述基站的相邻基站；第二发送单元，用于将所述D2D干扰状态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，用于根据D2D干扰状态信息，确定所述D2D传输的D2D干扰程度是否高于第一预设值；调度子单元，用于在所述D2D干扰程度高于第一预设值的情况下，在所述D2D传输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，所述第一发送单元包括：第二确定子单元，用于根据所述D2D干扰状态信息和/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，用于将所述D2D干扰状态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，用于接收UE或者相邻基站发送的所述D2D干扰状态信息；和/或生成单元，用于根据无线资源的干扰状况，生成所述D2D干扰状态信息。
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干扰协调装置，应用于用户设备，包括：发送模块，用于发送用于指示在相应的无线资源上的D2D传输的干扰程度的D2D干扰状态信息至基站，其中，所述D2D干扰状态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，基站获取D2D干扰状态信息，其中，D2D干扰状态信息用于指示在相应的无线资源上的D2D传输的干扰程度；基站根据D2D干扰状态信息，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。
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干扰状态信息，其中，D2D干扰状态信息用于指示在相应的无线资源上的D2D传输的干扰程度；
步骤S304，基站根据D2D干扰状态信息，进行干扰协调处理。
通过上述步骤，基站获取了可以用来表示在相应的无线资源上的D2D传输的干扰程度的D2D干扰状态信息后，从而使得基站可以根据D2D干扰状态信息指示的相应无线资源的干扰程度对无线资源进行干扰协调处理，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。
在上述步骤中，基站获取的D2D干扰状态信息可以是该基站根据无线资源的干扰状况生成的，也可以是由相邻的基站报告的，或者可以是由用户设备(UE)上报的。
例如，基站生成D2D干扰状态信息，或者基站接收到UE上报/其他相邻基站共享的D2D干扰状态信息后，将D2D干扰状态信息发送给相邻基站进行干扰协调处理。
优选地，D2D干扰状态信息指示D2D传输的干扰程度，可以为高，中，低，分别代表不同的干扰程度。
优选地，D2D的干扰状态信息包括以下信息之一：D2D传输的组号，优先级，D2D传输所对应的资源信息等。
优选地，相邻基站收到该D2D干扰状态信息后，根据信息进行相应的干扰协调。比如，当干扰状态信息为高时，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，相邻基站收到D2D的干扰状态信息后，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的干扰状态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。当优先级较低时，该基站在D2D的干扰状态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，所述提供D2D干扰状态信息以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(OAM)配置。
优选地，D2D干扰状态信息可与现有蜂窝干扰状态信息在一个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的干扰状态信息。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干扰状态信息得知相应的D2D干扰状态信息。优选地，在单独指示时，基站应忽略所收到的现有蜂窝干扰状态信息中D2D资源所对应的干扰状态信息。
优选地，D2D干扰状态信息重用现有过载指示(overload indicator，OI)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干扰状态信息。
优选地，D2D干扰状态信息在X2负荷信息(Load information)消息中携带。
优选地，将D2D干扰状态信息，通过OAM，或者向移动管理实体(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，基站根据UE上报的D2D干扰状态信息，向相邻基站报告D2D的干扰状态信息。
本发明实施例还提供了一种D2D干扰协调方法，应用于用户设备，包括：用户设备发送用于指示在相应的无线资源上的D2D传输的干扰程度的D2D干扰状态信息至基站，其中，D2D干扰状态信息用于指示基站进行干扰协调处理。
优选地，D2D干扰状态信息指示D2D干扰程度报告，可以为高，中，低，分别代表不同的干扰程度。
优选地，D2D的干扰状态信息包括以下信息之一：D2D传输的组号，优先级，D2D传输所对应的资源信息等。
优选地，D2D干扰状态信息可以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(OAM)配置。
优选地，UE向基站上报D2D干扰状态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传输受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。
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干扰状态信息。
优选地，基站根据UE上报的D2D干扰状态信息，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干扰状态信息为相应的D2D传输进行资源分配或调度调整。比如，如果相应D2D传输为小区内的传输，D2D干扰状态信息显示该D2D传输受到较高的干扰，则基站为相应D2D传输分配或调度其它资源或不易受到干扰的资源。
2)基站根据UE上报的D2D干扰状态信息，向相邻基站报告D2D的干扰状态信息。优选地，基站根据UE上报的D2D干扰状态信息，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干扰状态信息是 指，基站向可能的干扰源小区/基站报告D2D干扰状态信息。优选地，UE上报的D2D干扰状态信息中包含所在小区/基站标识。
优选地，相邻基站收到D2D干扰状态信息后，根据信息进行相应的干扰协调。比如，当干扰状态信息为高时，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UE上报的D2D干扰状态信息，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，基站通过OAM，MME，和或集中式信息中心获得相邻基站的D2D干扰状态信息。
本实施例还提供了一种D2D干扰协调装置，应用于基站。该装置用于实现上述应用于基站的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干扰状态信息，其中，D2D干扰状态信息用于指示在相应的无线资源上的D2D传输的干扰程度；协调模块44耦合至获取模块42，设置为根据D2D干扰状态信息，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干扰状态信息的模块”。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，优选地，协调模块44还可以包括以下至少之一的单元：调度单元442，耦合至获取模块42，设置为根据D2D干扰状态信息为D2D传输进行资源分配或调度调整；第一发送单元444，耦合至获取模块42，设置为将D2D干扰状态信息发送给基站的相邻基站；第二发送单元446，耦合至获取模块42，设置为将D2D干扰状态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，优选地，调度单元442还可以包括第一确定子单元4422和调度子单元4424，其中，第一确定子单元4422，设置为根据D2D干扰状态信息，确定D2D传输的D2D干扰程度是否高于 第一预设值；调度子单元4424，耦合至第一确定子单元4422，设置为在D2D干扰程度高于第一预设值的情况下，在D2D传输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，优选地，第一发送单元444还可以包括第二确定子单元4442和第一发送子单元4444，其中，第二确定子单元4442，设置为根据D2D干扰状态信息和/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，耦合至第二确定子单元4442，设置为将D2D干扰状态信息发送给确定的可能的干扰源小区/基站。
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，优选地，获取模块42还可以包括以下至少之一：接收单元422、生成单元424。其中，接收单元422设置为接收UE或者相邻基站发送的D2D干扰状态信息；生成单元424设置为根据无线资源的干扰状况，生成D2D干扰状态信息。
本实施例还提供了一种基站，该基站包括上述的应用于基站的D2D干扰协调装置。
本实施例还提供了另一种D2D干扰协调装置，应用于用户设备中，该装置包括发送模块52，其中，该发送模块52设置为发送用于指示在相应的无线资源上的D2D传输的干扰程度的D2D干扰状态信息至基站，其中，D2D干扰状态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用户设备，该用户设备包括上述的应用于用户设备的D2D干扰协调装置。
为了使本发明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干扰状态信息的方法。该方法包括以下步骤：
步骤1.基站向相邻基站提供D2D干扰状态信息。D2D干扰状态信息指示D2D传输的干扰程度，可以为高，中，低，分别代表不同的干扰程度。
优选地，D2D的干扰状态信息包括以下信息之一：D2D传输的组号，优先级、对应的资源信息等。
步骤2.相邻基站收到该D2D干扰状态信息后，根据信息进行相应的干扰协调。比如，当干扰状态信息为高时，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，相邻基站收到D2D的干扰状态信息后，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的干扰状态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。当优先级较低时，该基站在D2D的干扰状态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，D2D干扰状态信息可以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，上述提供D2D资源的干扰敏感度信息可以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，如通过基站配置更新(eNB Configuration Update)消息或负荷信息(Load information)消息，或者由OAM配置。
优选地，D2D干扰状态信息可与现有蜂窝干扰状态信息在一个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的干扰状态信息。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干扰状态信息得知相应的D2D干扰状态信息。优选地，在单独指示时，基站应忽略所收到的现有蜂窝干扰状态信息中D2D资源所对应的干扰状态信息。
优选地，D2D干扰状态信息重用现有OI 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干扰状态信息。
优选地，D2D干扰状态信息在X2Load information消息中携带。
优选地，将D2D干扰状态信息，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，基站根据UE上报的D2D干扰状态信息，向相邻基站报告D2D的干扰状态信息。
方法实施例二
本实施例描述的是UE向基站上报D2D干扰状态信息的方法。该方法包括以下步骤：
步骤1.UE向基站上报D2D干扰状态信息。D2D干扰状态信息指示D2D干扰程度报告，可以为高，中，低，分别代表不同的干扰程度。步骤2.基站根据UE上报的D2D干扰状态信息，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干扰状态信息为相应的D2D传输进行资源分配或调度调整。比如，如果相应D2D传输为小区内的传输，D2D干扰状态信息显示该D2D传输受到较高的干扰，则基站为相应D2D传输分配或调度其它资源或不易受到干扰的资源。
2)基站根据UE上报的D2D干扰状态信息，向相邻基站报告D2D的干扰状态信息。优选地，基站根据UE上报的D2D干扰状态信息，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干扰状态信息是指，基站向可能的干扰源小区/基站报告D2D干扰状态信息。
3)基站将UE上报的D2D干扰状态信息，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的干扰状态信息包括以下信息之一：D2D传输的组号，优先级，D2D传输所对应的资源信息等。
优选地，D2D干扰状态信息可以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(OAM)配置。
优选地，UE向基站上报D2D干扰状态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传输受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。
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干扰状态信息。
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干扰状态信息。
方法实施例三
本实施例描述的是UE向基站上报D2D干扰状态信息，基站收到该信息后，向相邻基站提供D2D干扰状态信息，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干扰状态信息。D2D干扰状态信息指示D2D干扰程度报告，可以为高，中，低，分别代表不同的干扰程度。
步骤2.基站收到该信息后，向相邻基站报告D2D的干扰状态信息。优选地，基站根据UE上报的D2D干扰状态信息，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干扰状态信息是指，基站向可能的干扰源小区/基站报告D2D干扰状态信息。
优选地，基站将UE上报的D2D干扰状态信息，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干扰状态信息后，根据信息进行相应的干扰协调。比如，当干扰状态信息为高时，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的干扰状态信息包括以下信息之一：D2D传输的组号，优先级，D2D传输所对应的资源信息等。
优选地，D2D干扰状态信息可以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干扰状态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传输受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。
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干扰状态信息。
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干扰状态信息。
方法实施例四
本实施例描述的是UE向基站上报D2D干扰状态信息，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干扰状态信息。D2D干扰状态信息指示D2D干扰程度报告，可以为高，中，低，分别代表不同的干扰程度。
步骤2.基站收到该信息后，根据D2D干扰状态信息为相应的D2D传输进行资源分配或调度调整。比如，如果相应D2D传输为小区内的传输，D2D干扰状态信息显示该D2D传输受到较高的干扰，则基站为相应D2D传输分配或调度其它资源或不易受到干扰的资源。
优选地，D2D的干扰状态信息包括以下信息之一：D2D传输的组号，优先级，D2D传输所对应的资源信息等。
优选地，上述提供D2D资源的干扰敏感度信息可以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干扰状态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传输受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。
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干扰状态信息。
综上所述，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。采用本发明所述方法和系统，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：本发明通过上述实施例，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。
以上所述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 (29)

  1. 一种设备到设备D2D干扰协调方法，包括：
    基站获取D2D干扰状态信息，其中，所述D2D干扰状态信息用于指示在相应的无线资源上的D2D传输的干扰程度；
    所述基站根据所述D2D干扰状态信息，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干扰状态信息包括：
    所述基站接收用户设备UE或者相邻基站发送的所述D2D干扰状态信息；和/或
    所述基站根据无线资源的干扰状况，生成所述D2D干扰状态信息。
  3. 根据权利要求1所述的方法，其中，所述D2D干扰状态信息包括以下至少之一的信息：
    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干扰状态信息，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干扰状态信息为所述D2D传输进行资源分配或调度调整；
    所述基站将所述D2D干扰状态信息发送给所述基站的相邻基站；
    所述基站将所述D2D干扰状态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干扰状态信息为所述D2D传输进行资源分配或调度调整包括：
    所述基站根据D2D干扰状态信息，确定所述D2D传输的D2D干扰程度是否高于第一预设值；
    所述基站在所述D2D干扰程度高于第一预设值的情况下，在所述D2D传输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干扰状态信息包括所述D2D传输的优先级的情况下，所述基站根据所述D2D干扰状态信息为所述D2D传输进行资源分配或调度调整包括：
    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干扰状态信息对应的无线资源上只调度小区中心UE的蜂窝/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或边缘UE的优先级较高的传输。
  7. 根据权利要求4所述的方法，其中，所述基站将所述D2D干扰状态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干扰状态信息，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干扰状态信息发送给确定的所述可能的干扰源小区/基站。
  8. 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：
    操作管理维护实体OAM、移动管理实体MME或者集中式信息中心。
  9. 根据权利要求1至8中任一项所述的方法，其中，所述D2D干扰状态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PRB为单位。
  10. 根据权利要求9所述的方法，其中，在所述D2D干扰状态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。
  11. 根据权利要求9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干扰状态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。
  12. 根据权利要求11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。
  13. 根据权利要求1所述的方法，其中，所述D2D干扰状态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。
  14. 根据权利要求1所述的方法，其中，所述D2D干扰状态信息重用过载指示信息，或者采用新的信息单元进行指示。
  15. 根据权利要求1所述的方法，其中，所述D2D干扰状态信息携带在X2负荷信息消息中。
  16. 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的D2D传输的干扰程度的D2D干扰状态信息至基站，其中，所述D2D干扰状态信息用于指示所述基站进行干扰协调处理。
  17. 根据权利要求16所述的方法，其中，所述D2D干扰状态信息包括以下至少之一的信息：
    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。
  18. 根据权利要求16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干扰状态信息：
    事件触发、周期上报、定时器触发。
  19. 根据权利要求18所述的方法，其中，所述事件触发包括：
    所述UE检测到D2D传输的干扰或者资源冲突；和/或
    所述UE收到所述基站指示所述UE上报所述D2D干扰状态信息的上报请求。
  20. 根据权利要求18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传输资源D2D通信资源单元，D2D发现资源单元、或调度分配SA资源单元、或D2D数据资源、或物理资源块PRB。
  21. 根据权利要求16至20中任一项所述的方法，其中，UE发送所述D2D干扰状态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干扰状态信息。
  22. 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干扰状态信息，其中，所述D2D干扰状态信息用于指示在相应的无线资源上的D2D传输的干扰程度；
    协调模块，设置为根据所述D2D干扰状态信息，进行干扰协调处理。
  23. 根据权利要求22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干扰状态信息为所述D2D传输进行资源分配或调度调整；
    第一发送单元，设置为将所述D2D干扰状态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干扰状态信息发送给处理中心。
  24. 根据权利要求23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D2D干扰状态信息，确定所述D2D传输的D2D干扰程度是否高于第一预设值；
    调度子单元，设置为在所述D2D干扰程度高于第一预设值的情况下，在所述D2D传输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。
  25. 根据权利要求23所述的装置，其中，所述第一发送单元包括：
    第二确定子单元，设置为根据所述D2D干扰状态信息和/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干扰状态信息发送给确定的所述可能的干扰源小区/基站。
  26. 根据权利要求22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干扰状态信息；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干扰状态信息。
  27. 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的D2D传输的干扰程度的D2D干扰状态信息至基站，其中，所述D2D干扰状态信息用于指示所述基站进行干扰协调处理。
  28. 一种基站，包括：如权利要求22至26中任一项所述的D2D干扰协调装置。
  29. 一种用户设备，包括：如权利要求27所述的D2D干扰协调装置。
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