WO2018001013A1 - 消除同频干扰的方法及装置 - Google Patents

消除同频干扰的方法及装置 Download PDF

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Publication number
WO2018001013A1
WO2018001013A1 PCT/CN2017/086061 CN2017086061W WO2018001013A1 WO 2018001013 A1 WO2018001013 A1 WO 2018001013A1 CN 2017086061 W CN2017086061 W CN 2017086061W WO 2018001013 A1 WO2018001013 A1 WO 2018001013A1
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WIPO (PCT)
Prior art keywords
base station
sps
information
neighboring cell
transmission delay
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PCT/CN2017/086061
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English (en)
French (fr)
Inventor
王令斌
吴枫
刘强
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中兴通讯股份有限公司
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Priority to JP2018567119A priority Critical patent/JP6661033B2/ja
Priority to EP17819010.4A priority patent/EP3481119A4/en
Publication of WO2018001013A1 publication Critical patent/WO2018001013A1/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
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • 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
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality

Definitions

  • the present invention relates to the field of communications, and in particular to a method and apparatus for eliminating co-channel interference.
  • Coordinated multi-point transmission/reception is a type of Long Time Evolution-Advanced (LTE-A) network that reduces or eliminates co-channel interference.
  • LTE-A Long Time Evolution-Advanced
  • Cell edge throughput technology that increases high-rate data traffic coverage, and improves system throughput.
  • CoMP technology reduces inter-cell interference through coordinated scheduling or joint processing between multiple cells, improves user signal quality, improves edge user performance, and improves overall system performance.
  • FIG. 1 is a schematic diagram of a CoMP technology application in the related art.
  • CoMP is a multi-input multi-output (MIMO) technology applied in multiple cells.
  • MIMO multi-input multi-output
  • In the uplink joint reception is generally adopted, and multiple cells or multiple base stations simultaneously receive and process uplink signals of the same user, thereby obtaining receive diversity gain and power gain.
  • There are two typical technologies in the downlink one is joint transmission, multiple cells or multiple base stations simultaneously transmit downlink signals of the same user; second, interference avoidance, when the serving cell sends data, other neighboring areas are in the same The time-frequency resources are silent; the two downlink CoMP technologies can effectively reduce the same-frequency interference of the same frequency domain resources of other cells, and improve the throughput of the edge users.
  • VoLTE Voice over LTE
  • All services are carried on the 4G LTE network.
  • the data and voice services can be unified under the same network.
  • the VoLTE service has a typical periodicity, generally 20 ms period.
  • the LTE network uses SPS technology for VoLTE services, which can significantly increase the voice user capacity of the system; it is better when multiple voice users talk at the same time. Guaranteed call delay and improved voice experience.
  • SPS Semi-Persistent Scheduling
  • MAC Media Access Control
  • PDCCH Physical Downlink Control Channel
  • the semi-persistent scheduling mode refers to a specific resource authorization, such as a resource block (Resource Block,) in the scheduling transmission process of the LTE system.
  • Resource Block a resource block
  • MCS Modulation and Coding Scheme
  • HARQ Hybrid Automatic Repeat ReQuest
  • the activation/reactivation of the semi-persistent scheduling the downlink control information (Downlink Control Information, DCI for short) is sent by the base station, and the LTE protocol is specified: the semi-static cell radio network identifier (SPS-C-RNTI) is used.
  • the transmitted DCI is scrambled and the specific field is set to zero.
  • the UE After receiving the DCI information, if the UE satisfies the requirements of the scrambling and field indication, the UE considers that the authorization is an SPS activation/reactivation authorization, and considers that the authorization moment is the starting point of the SPS authorization; then the UE continuously performs the service according to the agreed period.
  • the data is sent and received until a deauthorization instruction is received.
  • Semi-static scheduling deactivation The first method: the same as the semi-persistent scheduling activation mode, the SPS-C-RNTI scrambled DCI is sent, and the specific field is set to 0 or 1; after receiving the DCI, the UE considers SPS resource authorization is cancelled.
  • the second way (only for uplink SPS): The uplink deactivates the SPS by continuously sending several empty packets (ie, only Head/Padding, 0-bit Payload).
  • the semi-static scheduling technology is divided into two parts, the upper and lower parts, which can be exercised separately or separately.
  • Semi-persistent scheduling period The base station configures the SPS period of the UE through RRC signaling.
  • the LTE protocol specifies that the period of the SPS is 10, 20, 32, 40, 64. 80, 128, 160, 320, 640 milliseconds, etc.
  • FIG. 3 is a schematic diagram of distributed macro station transmission in the related art. As shown in FIG. 3, the delay is about 10 ms. Therefore, although the CoMP technology is good, the current application can only stay inside the eNodeB, and it cannot cover the entire network seamlessly.
  • the embodiment of the invention provides a method and a device for eliminating co-channel interference, so as to solve at least the problem that the CoMP technology is used to eliminate downlink co-channel interference in the existing network with large transmission delay in the related art.
  • a method for canceling co-channel interference includes: acquiring, by a base station, a transmission delay between a plurality of base stations adjacent to the base station; and receiving, by the base station, a serving UE in the local cell
  • the reference signal received power RSRP of the reported intra-frequency neighboring cell the base station determines, from the same-frequency neighboring cell corresponding to the RSRP of the local cell, a co-frequency neighboring cell with a transmission delay greater than a preset threshold as a candidate neighboring cell;
  • the base station configures the semi-persistent scheduling SPS information configured for the serving UE to perform multi-point coordinated transmission or transmission of CoMP information, and transmits the information to the candidate neighboring cell; wherein the SPS information is used to indicate the periodicity of the candidate neighboring cell. Stop scheduling on the specified resource.
  • the acquiring, by the base station, the transmission delay between the multiple base stations adjacent to the base station includes: acquiring, by the base station, a transmission delay between the base station and a plurality of adjacent base stations that are preset; or The base station detects a transmission delay between a plurality of base stations adjacent to the base station.
  • the determining, by the base station, a co-frequency neighboring cell with a transmission delay that is greater than a preset threshold from a co-frequency neighboring cell that has an RSRP corresponding to the local cell as the candidate neighboring cell includes: the base station reporting, according to the service UE, The RSRP sorts the same-frequency neighboring cells corresponding to the RSRP. The base station traverses the sorted intra-frequency neighboring cells, and selects the same-frequency neighboring cell whose transmission delay is greater than the preset threshold as the candidate neighboring cell.
  • the base station configures the semi-persistent scheduling SPS information configured for the serving UE to perform coordinated multi-point transmission or transmission of CoMP information, and the transmission to the candidate neighboring area includes: configuring, by the base station, the serving UE The SPS information, where the SPS information includes at least: a resource block RB resource activated by the SPS, an activation time of the SPS, and a period of the SPS; the base station groups the SPS information and forms CoMP information; The packet transport network PTN transmits the CoMP information to the candidate neighboring cell; wherein the SPS is used to indicate that the candidate neighboring cell periodically activates the resource block RB resource in the SPS periodically from the activation time Stop scheduling on.
  • the preset threshold is 10 ms.
  • an apparatus for canceling co-channel interference which is applied to a base station side, and includes: an acquiring module, configured to acquire a transmission delay between a plurality of base stations adjacent to the base station; and receive The module is configured to receive the reference signal received power RSRP of the intra-frequency neighboring area reported by the serving UE in the cell, and the determining module is configured to determine that the transmission delay is greater than a preset threshold from the same-frequency neighboring area corresponding to the RSRP of the local cell.
  • the same-frequency neighboring cell is used as a candidate neighboring cell; the processing module is configured to configure the semi-persistent scheduling SPS information configured for the serving UE to perform coordinated multi-point transmission or transmission of CoMP information, and transmit the information to the candidate neighboring cell;
  • the SPS information is used to indicate that the candidate neighboring cell periodically stops scheduling on the designated resource.
  • the acquiring module includes: an acquiring unit, configured to acquire a transmission delay between the base station and a plurality of adjacent base stations that are set in advance; or, a detecting unit, configured to detect, adjacent to the base station The transmission delay between multiple base stations.
  • the determining module includes: a sorting unit, configured to sort the same-frequency neighboring cells corresponding to the RSRP according to the RSRP reported by the serving UE; The contiguous co-frequency neighboring cell is traversed, and the same-frequency neighboring cell whose transmission delay is greater than a preset threshold is selected as the candidate neighboring cell.
  • a sorting unit configured to sort the same-frequency neighboring cells corresponding to the RSRP according to the RSRP reported by the serving UE. The contiguous co-frequency neighboring cell is traversed, and the same-frequency neighboring cell whose transmission delay is greater than a preset threshold is selected as the candidate neighboring cell.
  • the processing module includes: a configuration unit, configured to configure SPS information for the service UE, where the SPS information includes at least: a resource block RB resource activated by the SPS, an activation time of the SPS, and a period of the SPS; a processing unit, configured to group the SPS information and form CoMP information; and the transmitting unit is configured to transmit the CoMP information to the candidate neighboring area by using a packet transport network PTN; wherein the SPS is used to indicate The candidate neighboring cell stops scheduling on the resource block RB resource activated by the SPS periodically in the period from the activation time.
  • a configuration unit configured to configure SPS information for the service UE, where the SPS information includes at least: a resource block RB resource activated by the SPS, an activation time of the SPS, and a period of the SPS
  • a processing unit configured to group the SPS information and form CoMP information
  • the transmitting unit is configured to transmit the CoMP information to the candidate neighboring area by using a packet transport network PTN
  • the preset threshold is 10 ms.
  • a storage medium is also provided.
  • the storage medium is arranged to store program code for performing the following steps:
  • the storage medium is further arranged to store program code for performing the following steps:
  • the storage medium is further arranged to store program code for performing the following steps:
  • the storage medium is further arranged to store program code for performing the following steps:
  • the SPS information includes at least: an SPS-activated resource block RB resource, an activation time of the SPS, and a period of the SPS; grouping the SPS information and forming CoMP information;
  • the packet transport network PTN transmits the CoMP information to the candidate neighboring cell; wherein the SPS is used to indicate that the candidate neighboring cell periodically activates the resource block RB resource in the SPS periodically from the activation time Stop scheduling on.
  • the SPMP information is transmitted to the candidate neighboring area by using the CoMP method to generate the RSRP with the same frequency interference as the current base station, and the transmission delay between the two base stations is greater than the preset threshold, that is, the CoMP technology is used to eliminate the downlink.
  • the preset threshold that is, the CoMP technology is used to eliminate the downlink.
  • frequency interference it is not necessary to transmit data based on high real-time performance.
  • the scheme of using CoMP technology in large transmission delay can be completed according to the adjustment of the preset threshold, thereby solving the problem of large transmission delay in the related art.
  • FIG. 3 is a schematic diagram of transmission of a distributed macro station in the related art
  • FIG. 4 is a flow chart of a method of canceling co-channel interference according to an embodiment of the present invention.
  • FIG. 5 is a structural block diagram of an apparatus for canceling co-channel interference according to an embodiment of the present invention.
  • FIG. 4 is a flowchart of a method for eliminating co-channel interference according to an embodiment of the present invention. As shown in FIG. 4, the process includes the following steps:
  • Step S402 The base station acquires a transmission delay between multiple base stations adjacent to the base station;
  • Step S404 The base station receives the reference signal received power RSRP of the intra-frequency neighboring area reported by the serving UE in the local cell.
  • Step S406 The base station determines, as a candidate neighboring cell, a co-frequency neighboring cell whose transmission delay is greater than a preset threshold from the same-frequency neighboring cell corresponding to the RSRP in the local cell.
  • Step S408 The base station configures the semi-persistent scheduling SPS information configured for the service UE to perform coordinated multi-point transmission or transmission of CoMP information, and transmits the information to the candidate neighboring cell.
  • the SPS information is used to indicate that the candidate neighboring cell periodically stops scheduling on the designated resource.
  • the SPMS information is transmitted to the candidate neighboring area by using the CoMP method to generate the RSRP with the same frequency interference as the current base station, and the transmission delay between the two is greater than the preset threshold.
  • the CoMP technology when used to eliminate the downlink co-channel interference, the data transmission based on the high real-time performance is not required to be effective, and the CoMP technology can be used in the large transmission delay (for example, 10 ms or more) according to the preset threshold adjustment.
  • the solution solves the problem that the CoMP technology is used to eliminate downlink co-channel interference in the existing network with large transmission delay in the related art, and the effect of improving user throughput and spectrum utilization of the whole network is achieved.
  • the preset threshold value is 10ms, which is a value of the preferred embodiment of the present invention, and does not constitute a limitation of the present invention.
  • a corresponding preset threshold may be set according to a specific situation, for example, 15ms, 20ms, 8ms, etc. The following embodiments are also the same.
  • the base station involved in step S402 in this embodiment is obtained.
  • the manner of taking the transmission delay between multiple base stations adjacent to the base station includes:
  • Manner 1 The base station acquires a transmission delay between a preset base station and a plurality of adjacent base stations;
  • Manner 2 The base station detects a transmission delay between a plurality of base stations adjacent to the base station.
  • the base station involved in step S406 of the embodiment determines a co-frequency neighboring cell whose transmission delay is greater than a preset threshold from the same-frequency neighboring cell corresponding to the RSRP in the local cell.
  • the way to be a candidate neighborhood includes:
  • Step S406-1 The base station sorts the same-frequency neighboring cells corresponding to the RSRP according to the RSRP reported by the serving UE.
  • Step S406-2 The base station traverses the sorted intra-frequency neighboring cells, and selects an intra-frequency neighboring cell whose transmission delay is greater than a preset threshold as a candidate neighboring cell.
  • the base station involved in step S408 configures the semi-persistent scheduling SPS information configured for the service UE to be coordinated to transmit or transmit CoMP information, and is transmitted to the candidate neighboring cell.
  • Step S408-1 The base station configures SPS information for the service UE, where the SPS information includes at least: a resource block RB resource activated by the SPS, an activation time of the SPS, and a period of the SPS.
  • Step S408-2 The base station groups the SPS information and forms CoMP information.
  • Step S408-3 The base station transmits CoMP information to the candidate neighboring cell through the packet transport network PTN;
  • the SPS is used to indicate that the candidate neighboring cell stops scheduling on the resource block RB resource that is periodically activated on the SPS periodically from the activation time.
  • the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation.
  • the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk, CD-ROM, including a number of instructions to make a terminal device (available).
  • a storage medium such as ROM/RAM, disk, CD-ROM, including a number of instructions to make a terminal device (available
  • the method described in various embodiments of the present invention is implemented by a mobile phone, a computer, a server, or a network device.
  • a device for eliminating the same-frequency interference is provided, and the device is used to implement the foregoing embodiments and preferred embodiments, and details are not described herein.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • FIG. 5 is a structural block diagram of an apparatus for canceling co-channel interference according to an embodiment of the present invention.
  • the apparatus is applied to a base station side.
  • the apparatus includes: an obtaining module 52 configured to acquire multiple neighboring base stations.
  • the receiving module 54 is coupled to the acquiring module 52 and configured to receive the reference signal receiving power RSRP of the intra-frequency neighboring cell reported by the serving UE in the cell; the determining module 56 is coupled to the receiving module 54.
  • the processing module 58 is coupled with the determining module 56, and is configured to be
  • the semi-persistent scheduling SPS information configured by the service UE is configured to perform coordinated transmission or transmission of CoMP information, and is transmitted to the candidate neighboring cell.
  • the SPS information is used to indicate that the candidate neighboring cell periodically stops scheduling on the designated resource.
  • the obtaining module 52 includes: an acquiring unit, configured to acquire a transmission delay between the preset base station and the neighboring multiple base stations; or, the detecting unit is configured to detect multiple base stations adjacent to the base station The transmission delay between.
  • the determining module 56 includes: a sorting unit, configured to sort the same-frequency neighboring cells corresponding to the RSRP according to the RSRP reported by the serving UE; and the determining unit is configured to traverse the sorted intra-frequency neighboring cells, and select the selected A co-frequency neighboring cell with a transmission delay greater than a preset threshold is used as a candidate neighboring cell.
  • the processing module 58 includes: a configuration unit, configured to configure SPS information for the service UE, where the SPS information includes at least: the resource block RB resource activated by the SPS, and the SPS a live time, a period of the SPS; a processing unit configured to group the SPS information and form CoMP information; and a transmission unit configured to transmit the CoMP information to the candidate neighboring area through the packet transport network PTN; wherein the SPS is used to indicate the candidate The neighboring cell stops scheduling on the resource block RB resources activated by the SPS periodically from the activation time.
  • each of the above modules may be implemented by software or hardware.
  • the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the above modules are in any combination.
  • the forms are located in different processors.
  • This embodiment provides a method for reducing downlink co-channel interference.
  • the voice service in the same-frequency interference is taken as an example.
  • Step S502 preset transmission delay of each CoMP neighbor or network
  • the network with the eNB as the node is used as an example.
  • the transmission network transmission delay between the eNodeBs may be pre-set based on the pre-measurement result, and each eNB reserves the delay setting record of itself and other related eNBs.
  • the preset can be manually set or automatically detected.
  • Step S504 The base station selects a CoMP neighboring area with the largest delay and the same frequency interference for the UE performing the Voip service;
  • the service UE determines whether the service UE has the channel quality report of the same-frequency neighboring cell: if not, the process ends; if there is the channel quality report of the same-frequency neighboring cell, the same-frequency neighboring cell is sorted according to the interference degree from strong to weak. Forming a candidate set of CoMP neighbors;
  • TDELAY large delay threshold: 10 ms
  • Step S506 The base station sends the SPS information to the UE that performs the Voip service, and the SPS related information is packaged and transmitted to the CoMP neighboring area.
  • the CoMP process is as follows for the optimal co-channel interference neighbor region with large delays:
  • the base station configures the SPS attribute according to the service; the base station side activates the downlink SPS technology for the service UE: the local area continuously delivers the voice packet according to the same resource according to the SPS period; and then the base station sets the SPS information of the UE (including the SPS activated RB resource, The activation time of the SPS, the period of the SPS, etc.) are grouped to form cooperative information, which is transmitted to the selected neighboring area through the PTN transmission network; after the neighboring area receives the cooperation request sent by the serving cell, according to the periodic point of the SPS, No other users are scheduled on the frequency resource to avoid co-channel interference.
  • Application scenario 1 Taking the eNB as an example, selecting the best interference cancellation neighboring area for interference cancellation;
  • eNB1 with cell 1
  • eNB 2 with cell 2
  • eNB3 with cell 3
  • UE1 there are eNB1 (with cell 1), eNB 2 (with cell 2), eNB3 (with cell 3), and UE1.
  • the cells 1, 2, and 3 are adjacent to each other.
  • Pre-measurement delay between eNB1, eNB2, eNB3, and eNB4 is: [eNB1-eNB2: 9ms]; [eNB1-eNB3: 12ms]; [eNB2-eNB3: 10ms];
  • Step 10 Measure the transmission delay of the current eNodeB and the neighboring eNodeB, and configure it to the current eNodeB. That is, each eNB performs transmission delay preset with other eNBs;
  • the delay T12 preset by eNB1 and eNB2 is 9 (ms), and the delay T13 of the preset and eNB3 is 12 (ms);
  • the delay T21 preset by eNB2 and eNB1 is 9 (ms), and the delay T23 of the preset and eNB3 is 10 (ms);
  • the delay T31 preset by eNB3 and eNB1 is 12 (ms), and the delay T32 of pre-set and eNB2 is 10 (ms);
  • Step 20 UE1 starts the Volte service in cell 1 of eNB1.
  • the eNB sends an A3 measurement to the UE.
  • Step 30 When the UE1 moves to the edge of the cell 1, the ARP reports the RSRP of the local area and multiple co-frequency neighboring areas.
  • the service (cell 1) is obtained as -105dbm; the neighboring cell (cell 2) is -90dbm; The neighboring area (Cell 3) is -95dbm;
  • Step 40 The first sequential neighboring area in which the large-latency coordinated neighboring area is basically concentrated is used as the best interference to eliminate the neighboring area;
  • the basic set of neighboring areas of CoMP cooperation is: neighboring area 2 and neighboring area 3.
  • Step 50 traversing all the reported intra-frequency neighboring areas of the UE, and calculating the RSRP difference between the neighboring area and the local area (RSRP-neighboring area RSRP), and sorting them from large to small, so as the basic part of the CoMP cooperative neighboring area. set.
  • the basic set of the coordinated neighboring area is traversed, and each neighboring area is queried for the eNodeB to which it belongs, and the delay of the eNodeB with the local area is recorded; if it is greater than 10 ms, the neighboring area is placed into the set of large-latency coordinated neighboring areas. ;
  • the neighboring zone that meets more than 10 ms has only the neighboring zone 3, so the neighboring zone 3 is the best large-latency cooperative neighboring zone.
  • Step 60 The serving cell (cell 1) activates the SPS technology of the serving UE.
  • Step 70 The cell 1 of the eNB1 groups the downlink time-frequency resource information and the configuration period of the SPS authorized by the UE1 to form the cooperation information, and transmits the information to the selected neighboring area 3 through the transmission network.
  • the resource information and the configuration period include information such as an RB resource activated by the SPS, an activation time of the SPS, and a period of the SPS;
  • Step 80 After receiving the SPS authorization related information of the UE1 sent by the cell 1, the neighboring cell 3 periodically stops scheduling its own data on the corresponding time-frequency resource.
  • This application scenario 2 is similar to the application scenario 1, except that there are more neighboring cells: eNB4 (Cell 4) and eNB5 (Cell 5); wherein, the cells 1, 2, 3, 4, and 5 are mutually configured as a neighbor relationship.
  • eNB4 Cell 4
  • eNB5 Cell 5
  • the steps in the application scenario 2 are consistent with the processing steps 10 to 40 of the application scenario 1, and when the neighboring cell set obtained by the S50 is more than one in the application scenario 2 (the neighboring zone 4 and the neighboring zone 5 are added), Then perform the following steps:
  • Step 60 The cell 1 of the eNB1 groups the downlink time-frequency resource information and the configuration period (including the SPS-activated RB resource, the SPS activation time, the SPS period, and the like) of the SPS authorized by the UE1 to form a collaboration.
  • Information transmitted to the selected neighbourhoods 3, 4, 5 through the transmission network;
  • Step 70 After receiving the relevant authorization information of the SPS authorization of the UE1 sent by the cell 1, the neighboring cells 3, 4, and 5 periodically stop scheduling their own data on the corresponding time-frequency resource.
  • 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 the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the SPMP information is transmitted to the candidate neighboring area by using the CoMP method to generate the RSRP with the same frequency interference as the current base station, and the transmission delay between the two base stations is greater than the preset threshold, that is, the CoMP technology is used to eliminate the downlink.
  • the preset threshold that is, the CoMP technology is used to eliminate the downlink.
  • frequency interference it is not necessary to transmit data based on high real-time performance.
  • the scheme of using CoMP technology in large transmission delay can be completed according to the adjustment of the preset threshold, thereby solving the problem of large transmission delay in the related art.

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Abstract

本发明提供了一种消除同频干扰的方法及装置，其中，该方法包括：基站获取与基站相邻的多个基站之间的传输时延；基站接收本小区中业务UE上报的同频邻区的参考信号接收功率RSRP；基站从与本小区具有RSRP对应的同频邻区中确定出传输时延大于预设阈值的同频邻区作为候选邻区；基站将为业务UE配置的半静态调度SPS信息配置为多点协作传输或发送CoMP信息，并传输到候选邻区；其中，SPS信息用于指示候选邻区周期性在指定资源上停止调度。通过本发明，解决了相关技术中在大传输时延的现网中不存在如何使用CoMP技术消除下行同频干扰的问题，达到了提升用户的吞吐量和整网频谱利用率的效果。

Description

消除同频干扰的方法及装置 技术领域
本发明涉及通信领域，具体而言，涉及一种消除同频干扰的方法及装置。
背景技术
协作多点发射与接收技术(Coordinated multi-pointtransmission/reception简称为CoMP)，是演进性LTE(Long Time Evolution-Advanced，简称为LTE-A)网络中一种通过降低或者消除同频干扰以实现提高小区边缘吞吐量、增加高速率数据业务覆盖、提高系统吞吐量的技术。
CoMP技术通过多小区间的协作调度或联合处理，降低小区间的干扰，提高用户的信号质量,改善边缘用户性能的同时提高系统的整体性能。
图1是相关技术中CoMP技术应用示意图，如图1所示，CoMP是多输入多输出(Multi Input Multi Output，简称为MIMO)技术在多小区下的应用。在上行链路中一般采用联合接收，多个小区或者多个基站之间同时接收处理同一个用户的上行信号，从而获得接收分集增益和功率增益。在下行链路中有两种典型技术：一是联合发射，多个小区或者多个基站之间同时发送同一个用户的下行信号；二是干扰规避，服务小区发送数据时，其他邻区在同一时频资源静默；下行的两种CoMP技术可以有效降低其他小区相同频域资源的同频干扰，提升边缘用户的吞吐量。
IP语音数据传输(Voice over LTE，简称为VoLTE)技术，是一种无需2G/3G网，全部业务承载于4G LTE网络上，可实现数据与语音业务在同一网络下的统一；使用户享受高质量的语音通话。其中，VoLTE业务具有典型的周期性，一般为20ms周期。LTE网络针对VoLTE业务使用SPS技术，可以显著提升系统的语音用户容量；在多语音用户同时通话时，更好 的保障通话时延，提升语音感受。
半静态调度(Semi-Persistent Scheduling，简称为SPS)是LTE系统中介质访问控制(Logical Link Control，简称为MAC)层的关键技术之一。LTE系统中，由于物理下行控制信道(Physical Downlink Control Channel，简称为)PDCCH资源受限，会导致单位时间内调度的用户数严重受限；SPS技术的运用，极大的缓解了上述问题。
图2是相关技术中半静态调度示意图，如图2所示，半静态调度方式是指在LTE系统的调度传输过程中，基站侧通过控制信息进行特定的资源授权，例如资源块(Resource Block，简称为RB)、调制与编码策略(Modulation and Coding Scheme，简称为MCS)、混合自动重传请求(Hybrid Automatic Repeat reQuest，简称为HARQ)资源等，UE侧周期使用该授权；直至基站侧通过下发特定的控制信息，取消授权。
其中，半静态调度的激活/重激活：基站侧下发下行控制信息(Downlink Control Information，简称为DCI)，并按照LTE协议规定：通过半静态小区无线网络标识(SPS-C-RNTI)对下发的DCI进行加扰，并将特定字段置为0。UE在收到DCI信息后，若满足加扰和字段指示要求，则认为该授权为SPS激活/重激活授权，且认为该授权时刻为SPS授权的起点；而后UE按照约定周期，不断的进行业务数据的发送和收，直至收到取消授权指示。
半静态调度的去激活：第一种方式：与半静态调度激活方式相同，下发SPS-C-RNTI加扰的DCI，并将特定字段置0或1；UE收到该DCI后，则认为SPS的资源授权取消。第二种方式(仅适用上行SPS)：上行通过连续发送若干个空的数据包(即，只有头/Padding，0比特Payload)来去激活SPS。
半静态调度技术分为上下行两个部分，可以单独在上行使能，也可以单独在下行使能。半静态调度的周期：基站通过RRC信令对UE的SPS周期进行配置，LTE协议规定SPS的周期取值有10、20、32、40、64、 80、128、160、320、640毫秒等。
在LTE中，根据现有协议实现，CoMP技术可以很好地消除同频干扰，提升频谱利用率。但是现有技术中，使用CoMP技术消除下行同频干扰时，需要基于高实时性的数据传递(小于1ms)才能有效；而当前网络中eNodeB间的传输网络一般都是非理想的分组传送网络(Packet Transport Network，简称为PTN)，图3是相关技术中分布式宏站传输示意图，如图3所示，时延大约是10ms级别。因此，CoMP技术虽好，但是目前应用也还只能停留在eNodeB内部进行，无法对整个网络做到无缝覆盖；即使有技术能支持eNodeB间的多点协作，但是也至少存在几毫秒的时延，无法突破10ms以上的时延级别，这就使得CoMP带来的性能利好在实际的移动网络应用中大打折扣。
针对相关技术中在大传输时延的现网中不存在如何使用CoMP技术消除下行同频干扰的问题，目前尚未存在有效的解决方案。
发明内容
本发明实施例提供了一种消除同频干扰的方法及装置，以至少解决相关技术中在大传输时延的现网中不存在如何使用CoMP技术消除下行同频干扰的问题。
根据本发明实施例的一个方面，提供了一种消除同频干扰的方法，包括：基站获取与所述基站相邻的多个基站之间的传输时延；所述基站接收本小区中业务UE上报的同频邻区的参考信号接收功率RSRP；所述基站从与本小区具有RSRP对应的同频邻区中确定出传输时延大于预设阈值的同频邻区作为候选邻区；所述基站将为所述业务UE配置的半静态调度SPS信息配置为多点协作传输或发送CoMP信息，并传输到所述候选邻区；其中，所述SPS信息用于指示所述候选邻区周期性在指定资源上停止调度。
可选地，基站获取与所述基站相邻的多个基站之间的传输时延包括：所述基站获取预先设置的所述基站与相邻的多个基站之间的传输时延；或，所述基站检测与所述基站相邻的多个基站之间的传输时延。
可选地，所述基站从与本小区具有RSRP对应的同频邻区中确定出传输时延大于预设阈值的同频邻区作为候选邻区包括：所述基站根据业务UE上报的所述RSRP对与所述RSRP对应的同频邻区进行排序；所述基站遍历排序后的同频邻区，从中选择出传输时延大于预设阈值的同频邻区作为候选邻区。
可选地，所述基站将为所述业务UE配置的半静态调度SPS信息配置为多点协作传输或发送CoMP信息，并传输到所述候选邻区包括：所述基站为所述业务UE配置SPS信息，其中，所述SPS信息至少包括：SPS激活的资源块RB资源、SPS的激活时刻、SPS的周期；所述基站将所述SPS信息进行组包，并形成CoMP信息；所述基站通过分组传送网PTN将所述CoMP信息传输到所述候选邻区；其中，所述SPS用于指示所述候选邻区从所述激活时刻开始以所述周期周期性在SPS激活的资源块RB资源上停止调度。
可选地，所述预设阈值为10ms。
根据本发明的另一个方面，提供了一种消除同频干扰的装置，应用于基站侧，包括：获取模块，设置为获取与所述基站相邻的多个基站之间的传输时延；接收模块，设置为接收本小区中业务UE上报的同频邻区的参考信号接收功率RSRP；确定模块，设置为从与本小区具有RSRP对应的同频邻区中确定出传输时延大于预设阈值的同频邻区作为候选邻区；处理模块，设置为将为所述业务UE配置的半静态调度SPS信息配置为多点协作传输或发送CoMP信息，并传输到所述候选邻区；其中，所述SPS信息用于指示所述候选邻区周期性在指定资源上停止调度。
可选地，所述获取模块包括：获取单元，设置为获取预先设置的所述基站与相邻的多个基站之间的传输时延；或，检测单元，设置为检测与所述基站相邻的多个基站之间的传输时延。
可选地，所述确定模块包括：排序单元，设置为根据业务UE上报的所述RSRP对与所述RSRP对应的同频邻区进行排序；确定单元，设置为 遍历排序后的同频邻区，从中选择出传输时延大于预设阈值的同频邻区作为候选邻区。
可选地，所述处理模块包括：配置单元，设置为为所述业务UE配置SPS信息，其中，所述SPS信息至少包括：SPS激活的资源块RB资源、SPS的激活时刻、SPS的周期；处理单元，设置为将所述SPS信息进行组包，并形成CoMP信息；传输单元，设置为通过分组传送网PTN将所述CoMP信息传输到所述候选邻区；其中，所述SPS用于指示所述候选邻区从所述激活时刻开始以所述周期周期性在SPS激活的资源块RB资源上停止调度。
可选地，所述预设阈值为10ms。
根据本发明的又一个实施例，还提供了一种存储介质。该存储介质设置为存储用于执行以下步骤的程序代码：
获取与所述基站相邻的多个基站之间的传输时延；接收本小区中业务UE上报的同频邻区的参考信号接收功率RSRP；从与本小区具有RSRP对应的同频邻区中确定出传输时延大于预设阈值的同频邻区作为候选邻区；将为所述业务UE配置的半静态调度SPS信息配置为多点协作传输或发送CoMP信息，并传输到所述候选邻区；其中，所述SPS信息用于指示所述候选邻区周期性在指定资源上停止调度。
可选地，存储介质还设置为存储用于执行以下步骤的程序代码：
获取预先设置的所述基站与相邻的多个基站之间的传输时延；或，检测与所述基站相邻的多个基站之间的传输时延。
可选地，存储介质还设置为存储用于执行以下步骤的程序代码：
根据业务UE上报的所述RSRP对与所述RSRP对应的同频邻区进行排序；遍历排序后的同频邻区，从中选择出传输时延大于预设阈值的同频邻区作为候选邻区。
可选地，存储介质还设置为存储用于执行以下步骤的程序代码：
为所述业务UE配置SPS信息，其中，所述SPS信息至少包括：SPS激活的资源块RB资源、SPS的激活时刻、SPS的周期；将所述SPS信息进行组包，并形成CoMP信息；通过分组传送网PTN将所述CoMP信息传输到所述候选邻区；其中，所述SPS用于指示所述候选邻区从所述激活时刻开始以所述周期周期性在SPS激活的资源块RB资源上停止调度。
在本发明实施例中，通过CoMP方式传输SPS信息到候选邻区为与当前基站具有同频干扰产生RSRP且相互之间传输时延大于预设阈值的邻区，即在使用CoMP技术消除下行同频干扰时，不需要基于高实时性的数据传递才能有效，可以根据预设阈值的调整来完成在大传输时延下使用CoMP技术的方案，从而解决了相关技术中在大传输时延的现网中不存在如何使用CoMP技术消除下行同频干扰的问题，达到了提升用户的吞吐量和整网频谱利用率的效果。
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是相关技术中CoMP技术应用示意图；
图2是相关技术中半静态调度示意图；
图3是相关技术中分布式宏站传输示意图；
图4是根据本发明实施例的消除同频干扰的方法的流程图；
图5是根据本发明实施例的消除同频干扰的装置的结构框图。
具体实施方式
下文中将参考附图并结合实施例来详细说明本发明。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。
需要说明的是，本发明的说明书和权利要求书及上述附图中的术语 “第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
实施例1
在本实施例中提供了一种消除同频干扰的方法，图4是根据本发明实施例的消除同频干扰的方法的流程图，如图4所示，该流程包括如下步骤：
步骤S402：基站获取与基站相邻的多个基站之间的传输时延；
步骤S404：基站接收本小区中业务UE上报的同频邻区的参考信号接收功率RSRP；
步骤S406：基站从与本小区具有RSRP对应的同频邻区中确定出传输时延大于预设阈值的同频邻区作为候选邻区；
步骤S408：基站将为业务UE配置的半静态调度SPS信息配置为多点协作传输或发送CoMP信息，并传输到候选邻区；
其中，SPS信息用于指示候选邻区周期性在指定资源上停止调度。
通过本实施例的上述步骤S402至步骤S408可知，通过CoMP方式传输SPS信息到候选邻区为与当前基站具有同频干扰产生RSRP且相互之间传输时延大于预设阈值的邻区，即在本实施例中使用CoMP技术消除下行同频干扰时，不需要基于高实时性的数据传递才能有效，可以根据预设阈值的调整来完成在大传输时延(例如10ms以上)下使用CoMP技术的方案，从而解决了相关技术中在大传输时延的现网中不存在如何使用CoMP技术消除下行同频干扰的问题，达到了提升用户的吞吐量和整网频谱利用率的效果。
需要说明的是，本实施例中预设阈值取值10ms是本发明优选实施例的取值，并不构成对本发明的限定，在其他应用场景中可以根据具体情况设置相应的预设阈值，例如15ms、20ms、8ms等等。下述实施例也是同样的。
在本实施例的可选实施，对于本实施例步骤S402中涉及到的基站获 取与基站相邻的多个基站之间的传输时延的方式包括：
方式一：基站获取预先设置的基站与相邻的多个基站之间的传输时延；
方式二：基站检测与基站相邻的多个基站之间的传输时延。
在本实施例的另一个可选实施方式中，本实施例步骤S406中涉及到的基站从与本小区具有RSRP对应的同频邻区中确定出传输时延大于预设阈值的同频邻区作为候选邻区的方式包括：
步骤S406-1：基站根据业务UE上报的RSRP对与RSRP对应的同频邻区进行排序；
步骤S406-2：基站遍历排序后的同频邻区，从中选择出传输时延大于预设阈值的同频邻区作为候选邻区。
在本实施例的再一个可选实施方式中，步骤S408中涉及到的基站将为业务UE配置的半静态调度SPS信息配置为多点协作传输或发送CoMP信息，并传输到候选邻区的方式包括：
步骤S408-1：基站为业务UE配置SPS信息，其中，SPS信息至少包括：SPS激活的资源块RB资源、SPS的激活时刻、SPS的周期；
步骤S408-2：基站将SPS信息进行组包，并形成CoMP信息；
步骤S408-3：基站通过分组传送网PTN将CoMP信息传输到候选邻区；
其中，SPS用于指示候选邻区从激活时刻开始以周期周期性在SPS激活的资源块RB资源上停止调度。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到根据上述实施例的方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端设备(可 以是手机，计算机，服务器，或者网络设备等)执行本发明各个实施例所述的方法。
实施例2
在本实施例中还提供了一种消除同频干扰的装置，该装置用于实现上述实施例及优选实施方式，已经进行过说明的不再赘述。如以下所使用的，术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现，但是硬件，或者软件和硬件的组合的实现也是可能并被构想的。
图5是根据本发明实施例的消除同频干扰的装置的结构框图，该装置应用于基站侧，如图5所示，该装置包括：获取模块52，设置为获取与基站相邻的多个基站之间的传输时延；接收模块54，与获取模块52耦合连接，设置为接收本小区中业务UE上报的同频邻区的参考信号接收功率RSRP；确定模块56，与接收模块54耦合连接，设置为从与本小区具有RSRP对应的同频邻区中确定出传输时延大于预设阈值的同频邻区作为候选邻区；处理模块58，与确定模块56耦合连接，设置为将为业务UE配置的半静态调度SPS信息配置为多点协作传输或发送CoMP信息，并传输到候选邻区；其中，SPS信息用于指示候选邻区周期性在指定资源上停止调度。
可选地，该获取模块52包括：获取单元，设置为获取预先设置的基站与相邻的多个基站之间的传输时延；或，检测单元，设置为检测与基站相邻的多个基站之间的传输时延。
可选地，该确定模块56包括：排序单元，设置为根据业务UE上报的RSRP对与RSRP对应的同频邻区进行排序；确定单元，设置为遍历排序后的同频邻区，从中选择出传输时延大于预设阈值的同频邻区作为候选邻区。
可选地，处理模块58包括：配置单元，设置为为业务UE配置SPS信息，其中，SPS信息至少包括：SPS激活的资源块RB资源、SPS的激 活时刻、SPS的周期；处理单元，设置为将SPS信息进行组包，并形成CoMP信息；传输单元，设置为通过分组传送网PTN将CoMP信息传输到候选邻区；其中，SPS用于指示候选邻区从激活时刻开始以周期周期性在SPS激活的资源块RB资源上停止调度。
需要说明的是，上述各个模块是可以通过软件或硬件来实现的，对于后者，可以通过以下方式实现，但不限于此：上述模块均位于同一处理器中；或者，上述各个模块以任意组合的形式分别位于不同的处理器中。
实施例3
本实施例提供了一种减少下行同频干扰的方法，在本实施例中以下行同频干扰中的语音业务为例进行说明，此外，本实施例中涉及到的大时延CoMP处理技术也是以传输时延>＝10ms为例进行说明；本实施例的方法包括：
步骤S502：预设值各CoMP邻区或网络的传输时延；
其中，以eNB为节点的网络为例，例如可以基于预先测算结果，预设置各个eNodeB间的传输网络传输时延，各个eNB保留自己和其他相关eNB的时延设置记录。而该预设置可以是人工设置，也可以是自动检测。
步骤S504：基站针对进行Voip业务的UE选出时延和同频干扰综合最大的CoMP邻区；
其中，首先判定业务UE是否有同频邻区的信道质量上报：如果没有则流程结束；如果有同频邻区的信道质量上报，则对同频邻区按照干扰程度由强到弱进行排序，形成CoMP邻区的候选集合；
进而对排序后的同频邻区按照干扰程度进行遍历；记录邻区的传输时延是否大于TDELAY(大时延阈值：10ms)；若是，则将其放入大时延候选邻区集合；以形成最终的大时延CoMP邻区候选集合；
步骤S506：基站对进行Voip业务的UE下发SPS信息，并将此SPS相关信息打包传递给上述CoMP邻区；
其中，针对已经选择出大时延最优同频干扰邻区，CoMP处理如下：
首先，基站根据业务配置SPS的属性；基站侧对业务UE激活下行SPS技术：本区按照SPS周期持续在相同的资源下发语音包；进而基站将UE的SPS信息(包括SPS激活的RB资源，SPS的激活时刻，SPS的周期等信息)进行组包，形成协作信息，通过PTN传输网络，传递到选定邻区；邻区收到服务小区发送的协作请求后，按照SPS的周期点，在此时频资源上不再调度其他用户，避免产生同频干扰。
下面结合本实施的具体应用场景对本实施例进行具体说明；
应用场景1：以eNB为例，选择最佳干扰消除邻区进行干扰消除；
其中，有eNB1(有小区1)、eNB 2(有小区2)、eNB3(有小区3)、UE1。该小区1，2，3互为邻区配置。
预先测量eNB1、eNB 2、eNB3、eNB4间时延为：[eNB1-eNB2:9ms]；[eNB1-eNB3:12ms]；[eNB2-eNB3:10ms]；
步骤10：测量当前eNodeB和相邻eNodeB的传输时延，并将其配置给当前eNodeB。即在各eNB进行与其他eNB的传输时延预设置；
其中，在eNB1预设置与eNB2的时延T12为9(ms)、预设置与eNB3的时延T13为12(ms)；
在eNB2预设置与eNB1的时延T21为9(ms)、预设置与eNB3的时延T23为10(ms)；
在eNB3预设置与eNB1的时延T31为12(ms)、预设置与eNB2的时延T32为10(ms)；
步骤20：UE1在eNB1的小区1下启动Volte业务。为了判断切换，eNB给UE下发了A3测量。
步骤30：UE1移动到小区1的边缘时，通过A3上报本区和多个同频邻区的RSRP；
其中，获得本服务(小区1)为-105dbm；邻区(小区2)为-90dbm； 邻区(小区3)为-95dbm；
步骤40：大时延协作邻区基本集中的第一顺序邻区，作为最佳干扰消除邻区；
其中，遍历UE所有上报的同频邻区，计算邻区和本区的RSRP差值(邻区RSRP-邻区RSRP)，并由大到小进行排序，以此作为CoMP协作的邻区基本集合，如表1所示：
邻区ID 邻区和服务小区的RSRP差值 时延
邻区2 15 9ms
邻区3 10 12ms
表1
根据表1可知，CoMP协作的邻区基本集合为：邻区2、邻区3。
步骤50：遍历UE所有上报的同频邻区，计算邻区和本区的RSRP差值(邻区RSRP-邻区RSRP)，并由大到小进行排序，以此作为CoMP协作的邻区基本集合。本例中遍历协作邻区基本集，对每个邻区查询其所属的eNodeB，并记录与本区eNodeB的时延；若大于10ms，则将该邻区从放入大时延协作邻区集合；
上表可以看出，符合大于10ms的邻区只有邻区3，因此邻区3是最佳大时延协作邻区。
步骤60：服务小区(小区1)激活业务UE的SPS技术.
步骤70：eNB1的小区1将给UE1下发的SPS授权的下行时频资源信息及配置周期等进行组包，形成协作信息，通过传输网络，传递到选定邻区3；其中，下行时频资源信息及配置周期包括SPS激活的RB资源，SPS的激活时刻，SPS的周期等信息；
步骤80：邻区3收到小区1发来的UE1的SPS授权相关授权信息后，周期性的在对应的时频资源上停止调度自己的数据。
通过上述本实施例的步骤，实现了eNodeB间大时延传输网络下，有效使用CoMP的一种方法；藉此消除同频干扰，获取增益。
应用场景2，以eNB为例，选择同时多邻区进行干扰消除
本应用场景2与应用场景1类似，只是有了更多的邻区：eNB4(小区4)、eNB5(小区5)；其中，小区1、2、3、4、5互配置为邻区关系。
本应用场景2中的步骤与应用场景1的处理步骤10～40一致，而当S50获得的邻区集合时，在本应用场景2中不止一个时(增加了邻区4、邻区5)，之后执行以下步骤：
步骤60：eNB1的小区1将给UE1下发的SPS授权的下行时频资源信息及配置周期等(包括SPS激活的RB资源，SPS的激活时刻，SPS的周期等信息)进行组包，形成协作信息，通过传输网络，传递到选定邻区3、4、5；
步骤70：邻区3、4、5收到小区1发来的UE1的SPS授权相关授权信息后，都周期性的在对应的时频资源上停止调度自己的数据。
综上所述，通过本实施例在邻区传输时延较大(大于10ms)的前提下，提出一种有效消除同频干扰的方法，解决了相关技术中不能大时延传输网络的下行语音业务同频干扰问题，拓展CoMP应用空间，提升用户的吞吐量和整网频谱利用率。
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，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，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。
工业实用性
在本发明实施例中，通过CoMP方式传输SPS信息到候选邻区为与当前基站具有同频干扰产生RSRP且相互之间传输时延大于预设阈值的邻区，即在使用CoMP技术消除下行同频干扰时，不需要基于高实时性的数据传递才能有效，可以根据预设阈值的调整来完成在大传输时延下使用CoMP技术的方案，从而解决了相关技术中在大传输时延的现网中不存在如何使用CoMP技术消除下行同频干扰的问题，达到了提升用户的吞吐量和整网频谱利用率的效果。

Claims (10)

  1. 一种消除同频干扰的方法，包括：
    基站获取与所述基站相邻的多个基站之间的传输时延；
    所述基站接收本小区中业务UE上报的同频邻区的参考信号接收功率RSRP；
    所述基站从与本小区具有RSRP对应的同频邻区中确定出传输时延大于预设阈值的同频邻区作为候选邻区；
    所述基站将为所述业务UE配置的半静态调度SPS信息配置为多点协作传输或发送CoMP信息，并传输到所述候选邻区；
    其中，所述SPS信息用于指示所述候选邻区周期性在指定资源上停止调度。
  2. 根据权利要求1所述的方法，其中，基站获取与所述基站相邻的多个基站之间的传输时延包括：
    所述基站获取预先设置的所述基站与相邻的多个基站之间的传输时延；或，
    所述基站检测与所述基站相邻的多个基站之间的传输时延。
  3. 根据权利要求1所述的方法，其中，所述基站从与本小区具有RSRP对应的同频邻区中确定出传输时延大于预设阈值的同频邻区作为候选邻区包括：
    所述基站根据业务UE上报的所述RSRP对与所述RSRP对应的同频邻区进行排序；
    所述基站遍历排序后的同频邻区，从中选择出传输时延大于预设阈值的同频邻区作为候选邻区。
  4. 根据权利要求1所述的方法，其中，所述基站将为所述业务UE配置的半静态调度SPS信息配置为多点协作传输或发送CoMP信 息，并传输到所述候选邻区包括：
    所述基站为所述业务UE配置SPS信息，其中，所述SPS信息至少包括：SPS激活的资源块RB资源、SPS的激活时刻、SPS的周期；
    所述基站将所述SPS信息进行组包，并形成CoMP信息；
    所述基站通过分组传送网PTN将所述CoMP信息传输到所述候选邻区；
    其中，所述SPS用于指示所述候选邻区从所述激活时刻开始以所述周期周期性在SPS激活的资源块RB资源上停止调度。
  5. 根据权利要求1所述的方法，其中，所述预设阈值为10ms。
  6. 一种消除同频干扰的装置，应用于基站侧，包括：
    获取模块，设置为获取与所述基站相邻的多个基站之间的传输时延；
    接收模块，设置为接收本小区中业务UE上报的同频邻区的参考信号接收功率RSRP；
    确定模块，设置为从与本小区具有RSRP对应的同频邻区中确定出传输时延大于预设阈值的同频邻区作为候选邻区；
    处理模块，设置为将为所述业务UE配置的半静态调度SPS信息配置为多点协作传输或发送CoMP信息，并传输到所述候选邻区；
    其中，所述SPS信息用于指示所述候选邻区周期性在指定资源上停止调度。
  7. 根据权利要求6所述的装置，其中，所述获取模块包括：
    获取单元，设置为获取预先设置的所述基站与相邻的多个基站之间的传输时延；或，
    检测单元，设置为检测与所述基站相邻的多个基站之间的传输时延。
  8. 根据权利要求6所述的装置，其中，所述确定模块包括：
    排序单元，设置为根据业务UE上报的所述RSRP对与所述RSRP对应的同频邻区进行排序；
    确定单元，设置为遍历排序后的同频邻区，从中选择出传输时延大于预设阈值的同频邻区作为候选邻区。
  9. 根据权利要求6所述的装置，其中，所述处理模块包括：
    配置单元，设置为为所述业务UE配置SPS信息，其中，所述SPS信息至少包括：SPS激活的资源块RB资源、SPS的激活时刻、SPS的周期；
    处理单元，设置为将所述SPS信息进行组包，并形成CoMP信息；
    传输单元，设置为通过分组传送网PTN将所述CoMP信息传输到所述候选邻区；
    其中，所述SPS用于指示所述候选邻区从所述激活时刻开始以所述周期周期性在SPS激活的资源块RB资源上停止调度。
  10. 根据权利要求6所述的装置，其中，所述预设阈值为10ms。
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