WO2017063430A1

WO2017063430A1 - Method of selecting transmission point participating in coordinated multipoint transmission and device utilizing same

Info

Publication number: WO2017063430A1
Application number: PCT/CN2016/092125
Authority: WO
Inventors: 陈军; 庄宏成; 罗泽宙
Original assignee: 华为技术有限公司
Priority date: 2015-10-13
Filing date: 2016-07-28
Publication date: 2017-04-20
Also published as: CN106604311B; CN106604311A

Abstract

The application relates to the field of a telecommunications technology, and in particular, to a method of selecting a transmission point (TP) participating in a coordinated multipoint (CoMP) transmission and a device utilizing the same, resolving problems of increased user measurement feedback traffic and decreased CoMP transmission performance. The embodiment according to the application provides the method of selecting a transmission point participating in a CoMP transmission, comprising: transmitting, by network equipment, to user equipment (UE) in coverage, measurement information; receiving a first TP set measured based on the measurement information, fed back from each of the UE, and used in the CoMP transmission; and determining, according to the first TP set fed back from each of the UE, a second TP set participating the CoMP transmission for each of the UE.

Description

Method and device for selecting transmission node participating in coordinated multi-point transmission

The present application claims priority to the Chinese Patent Application filed on October 13, 2015, the Chinese Patent Office, Application No. 201510671254.0, entitled "A Method and Apparatus for Selecting a Transfer Node TP Participating in Cooperative Multi-Point CoMP Transmission", The entire contents of this application are incorporated herein by reference.

Technical field

The present application relates to the field of communications technologies, and in particular, to a method and apparatus for selecting a transport node TP that participates in coordinated multi-point CoMP transmission.

Background technique

With the development of smart phones, the explosive growth of various applications has led to a sharp increase in the demand for data transmission. At the same time, ubiquitous communication requirements have placed higher demands on the coverage of wireless communication systems. In order to meet the requirements of data transmission rate and communication system coverage, the community is gradually developing towards miniaturization and intensive directions. However, cell intensiveness will result in more overlapping areas between cells, and inter-cell interference will become larger. In order to reduce the interference of users at the edge of the cell, the cell edge throughput rate is improved. The 3rd Generation Partner Project (3GPP) proposes a coordinated multi-point (CoMP) technology in LTE advanced (LTE-A).

The CoMP technology communicates with a User Equipment (UE) through a plurality of Transmission Points (TPs), where the TP can refer to any node that can provide signal coverage for the UE, such as a base station and a relay. A node, a remote radio head (RRH), a radio remote unit (RRU), an antenna port, and the like.

Selecting each TP that participates in CoMP transmission for the UE is an important prerequisite for guaranteeing the quality of CoMP transmission. Generally, the macro base station receives reference power (Reference Signal Receiving Power, RSRP) or reference signal reception quality (Reference Signal Receiving Quality, RSRQ) and CQI, combined with the load status of each TP, select the TP set for the UE to participate in CoMP transmission.

In the above manner, each time the UE selects a TP set that participates in CoMP transmission, the UE needs to perform cell measurement and report various measurement information, and the macro base station separately configures the UE to participate in CoMP transmission for the measurement information reported by each UE. TP collection. In an Ultra-Dense Network (UDN) scenario, the number of TPs is large and the user feedback is large. The TP set that participates in CoMP transmission is configured separately for each UE. Too many, there is inevitably interference between different TP sets, which reduces the performance of CoMP transmission.

Summary of the invention

The embodiment of the present application provides a method and a device for selecting a transmission node TP that participates in CoMP transmission, which is used to solve the problem that the user has a large amount of measurement feedback and low performance of performing CoMP transmission.

An embodiment of the present application provides a method for selecting a transport node that participates in a CoMP transmission, including:

The network side device sends measurement information to the user equipment UE in the coverage area;

Receiving, by each UE, a first transmission node TP set for CoMP transmission after performing cell measurement feedback based on the measurement information;

Determining, according to the first TP set fed back by each UE, a second TP set participating in CoMP transmission for each UE.

In the above method, the network side device sends measurement information to the UE in the coverage area, including:

The network side device divides the covered UEs into multiple configuration sets, and indicates the same measurement information for the UEs in the same configuration set;

Determining, according to the first TP set fed back by each UE, a second TP set that participates in CoMP transmission for each UE, including:

And determining, according to the first TP set fed back by each UE in each configuration set, at least one second TP set participating in the CoMP transmission for each of the configuration sets.

Optionally, the network side device divides the covered UEs into multiple configuration sets, including:

Dividing each covered UE into a plurality of geographical zone sets, wherein each UE in each geographic zone set Capable of receiving at least one signal of the same TP;

For each geographic zone set, each UE in the geographic zone set is divided into different SINR sets according to the signal to interference and noise ratio SINR measured by each UE in the geographic zone set, and each SINR set is used as one configuration. A set; wherein different SINR sets respectively correspond to different SINR ranges.

In the above method, the measurement information includes one or more of the following information:

Information indicating the maximum number of TPs that the UE can select for CoMP transmission;

Information indicating a set of geographic regions to which the UE belongs;

Information indicating a set of SINRs to which the UE belongs;

Information indicating a range of SINR values corresponding to different SINR sets.

Optionally, the network side device divides the covered UEs into multiple geographic zone sets, including:

Each of the covered UEs is divided into a plurality of geographical zone sets according to one or more of the following information:

a reference signal reception quality RSRP value of different TPs measured by each UE;

The path loss value measured by each UE for different TPs;

Geographical location coordinate information of each UE.

Optionally, the RSRP is an RSRP based on a cell-specific reference signal CRS, or an RSRP based on a channel state information reference signal CSI-RS.

Optionally, the network side device determines, according to the first TP set fed back by each UE in each configuration set, at least one second TP set that participates in the CoMP transmission, including:

For each configuration set, the network side device selects, from the first TP set fed back by each UE, each first TP set of the TP that is only included in the coverage of the network side device;

The network side device selects, from each of the selected first TP sets, each TP that meets the conditions for participating in the CoMP transmission;

The network side device determines, according to each TP selected from each selected first TP set, at least one second TP set participating in CoMP transmission for each of the configuration sets.

For each configuration set, selecting, from the first TP set fed back by each UE, each first TP set including the TP outside the coverage of the network side device;

By negotiating with the neighboring network side device, selecting each TP that meets the conditions for participating in the CoMP transmission from each selected first TP set;

And determining, according to each TP selected from each of the selected first TP sets, at least one second TP set participating in the CoMP transmission for each of the configuration sets.

In the above implementation manner, the conditions for participating in the CoMP transmission include one or more of the following conditions:

The load value is lower than the set load threshold;

The remaining capacity of the backhaul link is higher than the set capacity threshold;

The backhaul delay is lower than the set delay;

The channel quality indication CQI value is greater than the set CQI threshold.

Optionally, the network side device negotiates with the neighboring network side device, including:

The network side device interacts with the neighboring network side device to exchange one or more of the following information:

Selecting a number of UEs for each TP in the first TP set;

Remaining capacity of the backhaul link of each TP in the first TP set;

Backhaul delay between TPs in the first TP set;

A TP that does not meet the conditions for participating in CoMP transmission.

For each configuration set, each TP in the first TP set fed back by each UE is divided into N third TP sets; where N is a positive integer, and when N is greater than or equal to 2, in N third TPs In the set, the number of the same UE served by any two third TP sets is less than 1/n of the number of UEs served by the two third TP sets, and n is a natural number greater than or equal to 1;

Each of the divided third TP sets is taken as one of the second TP sets; or

For each third TP set, according to the number of UEs in which each TP is selected, a set number of TPs are selected from the third TP set as one of the second TP sets; wherein, in the second TP set The network side device is included.

Optionally, after determining, by the network side device, the at least two second TP sets participating in the CoMP transmission, for each configuration set, the network side device further includes:

And if each TP in the first TP set fed back by any UE in each configuration set belongs to at least two second TP sets, according to each second TP set in the at least two second TP sets When the CoMP transmission is performed separately, the SINR measured by the UE is used by the UE to select a second TP set from the at least two second TP sets for CoMP transmission.

An embodiment of the present application provides a method for selecting a transmission node that participates in coordinated multi-point CoMP transmission, including:

The user equipment UE receives measurement information delivered by the network side device;

The UE performs cell measurement based on the measurement information, and determines a first TP set for CoMP transmission according to the measurement result;

The UE feeds back the determined first TP set to the network side device, so that the network side device determines, according to the first TP set, a second TP set that participates in CoMP transmission according to the first TP set.

In the foregoing method, after the UE sends the determined first TP set to the network side device, the method further includes:

The UE receives the second TP set sent by the network side device.

Optionally, the UE performs cell measurement based on the measurement information, including:

The UE performs reference signal reception quality RSRP measurement based on the cell-specific reference signal CRS, or

The RSRP measurement is performed based on the channel state information reference signal CSI-RS.

Information indicating a set of geographic regions to which the UE belongs;

Information indicating a set of SINRs to which the UE belongs;

Optionally, the UE performs cell measurement based on the measurement information, and further includes:

Performing channel quality indication CQI measurement;

And feeding back the determined first TP set to the network side device, including:

And determining, to the network side device, the determined first TP set, and the CQI value of each TP in the first TP set.

Optionally, the UE determines, according to the measurement result, the first TP set used for CoMP transmission, including:

A first set of TPs for CoMP transmission is determined based on the measurement results and the maximum number of TPs that can be selected based on the measurement information.

An embodiment of the present application provides an apparatus for selecting a transmission node that participates in a CoMP transmission, including:

a transmitter, configured to send measurement information to a user equipment UE in a coverage area of the network side device;

a receiver, configured to receive, by each UE, a first transmission node TP set for CoMP transmission after performing cell measurement feedback based on the measurement information, and transmit the first TP set to a processor;

And a processor, configured to determine, according to the first TP set received by the receiver, a second TP set that participates in CoMP transmission for each UE.

Optionally, the processor is further configured to: divide the covered UEs into multiple configuration sets; the transmitter is specifically configured to: indicate the same measurement information for the UEs in the same configuration set;

The processor is specifically used to:

In the above device, the processor is specifically configured to:

Dividing each covered UE into a plurality of geographical zone sets, wherein each UE in each geographic zone set is capable of receiving at least one signal of the same TP; for each geographic zone set, according to each UE in the geographic zone set The measured signal to interference and noise ratio SINR is used to divide each UE in the geographic region set into different SINR sets, and each SINR set is used as one of the configuration sets; wherein different SINR sets respectively correspond to different SINR values .

Optionally, the measurement information includes one or more of the following information:

Information indicating a set of geographic regions to which the UE belongs;

Information indicating a set of SINRs to which the UE belongs;

Optionally, the processor is specifically configured to:

The path loss value measured by each UE for different TPs;

Geographical location coordinate information of each UE.

Optionally, the processor is specifically configured to:

For each configuration set, from the first TP set fed back by each UE, select each first TP set of the TP that is only included in the coverage of the network side device; and select from each selected first TP set. Each TP that meets the conditions for participating in the CoMP transmission; and at least one second TP set participating in the CoMP transmission is determined for each of the configuration sets according to each TP selected from the selected first TP sets.

Optionally, the processor is specifically configured to:

For each configuration set, the first TP set including the TP outside the coverage of the network side device is selected from the first TP set fed back by each UE; and the selected one is selected by negotiating with the neighboring network side device. In each of the first TP sets, each TP that meets the conditions for participating in the CoMP transmission is filtered out; and at least one part participating in the CoMP transmission is determined for each of the configuration sets according to each TP selected from the selected first TP sets. Two TP collections.

Optionally, the conditions for participating in the CoMP transmission include one or more of the following conditions:

The load value is lower than the set load threshold;

The backhaul delay is lower than the set delay;

The channel quality indication CQI value is greater than the set CQI threshold.

Optionally, the processor is specifically configured to: interact with the neighboring network side device to perform one or more of the following information:

Selecting a number of UEs for each TP in the first TP set;

The remaining capacity of the backhaul link of each TP in the first TP set;

a backhaul delay between each TP in the first TP set;

A TP that does not meet the conditions for participating in CoMP transmission.

Optionally, the processor is specifically configured to:

Each of the divided third TP sets is taken as one of the second TP sets; or

Optionally, the processor is specifically configured to:

For each configuration set, after determining at least two second TP sets participating in the CoMP transmission for each of the configuration sets, if each of the first TP sets in the first TP set fed back by any one of the configuration sets is And the SINR measured by the UE when the CoMP transmission is performed according to each of the at least two second TP sets, and the UE is from the at least two second TPs. A second TP set is selected in the set for CoMP transmission.

An embodiment of the present application provides an apparatus for selecting a transmission node that participates in coordinated multi-point CoMP transmission, including:

a receiver, configured to receive measurement information delivered by the network side device, and transmit the received measurement information to the processor;

a processor, configured to perform cell measurement based on the measurement information, and determine, according to the measurement result, a first TP set used for CoMP transmission;

a transmitter, configured to feed back the first TP set determined by the processor to the network side device, so that the network side device determines to participate in CoMP transmission for the user equipment UE according to the first TP set The second TP set that was lost.

In the above device, the receiver is also used to:

After the transmitter feeds back the determined first TP set to the network side device, receiving the second TP set sent by the network side device.

Optionally, the processor is specifically configured to:

Performing reference signal reception quality RSRP measurement based on the cell-specific reference signal CRS, or

Information indicating a set of geographic regions to which the UE belongs;

Information indicating a set of SINRs to which the UE belongs;

Optionally, the processor is specifically configured to: perform channel quality indication CQI measurement;

The transmitter is specifically used to:

The first TP set determined by the processor and the CQI value of each TP in the first TP set are fed back to the network side device.

Optionally, the processor is specifically configured to:

The embodiment of the present application provides a schematic structural diagram of an apparatus for selecting a transmission node participating in a CoMP transmission, including:

a sending module, configured to send measurement information to a user equipment UE in a coverage area of the network side device;

a receiving module, configured to receive, by each UE, a first transmission node TP set for CoMP transmission after performing cell measurement feedback based on the measurement information, and transmit the first TP set to a processing module;

And a processing module, configured to determine, according to the first TP set received by the receiving module, a second TP set that participates in CoMP transmission for each UE.

Optionally, the processing module is further configured to: divide each covered UE into multiple configuration sets; The sending module is specifically configured to: indicate the same measurement information for the UEs in the same configuration set;

The processing module is specifically used to:

Optionally, the processing module is specifically configured to:

Information indicating a set of geographic regions to which the UE belongs;

Information indicating a set of SINRs to which the UE belongs;

Optionally, the processing module is specifically configured to:

The path loss value measured by each UE for different TPs;

Geographical location coordinate information of each UE.

Optionally, the processing module is specifically configured to:

For each configuration set, from the first TP set fed back by each UE, select each first TP set of the TP that is only included in the coverage of the network side device; and select from each selected first TP set. Each TP that meets the conditions for participating in the CoMP transmission; determining at least one participating CoMP for each of the configuration sets according to each TP selected from the selected first TP sets The second set of TPs transmitted.

Optionally, the processing module is specifically configured to:

The load value is lower than the set load threshold;

The backhaul delay is lower than the set delay;

The channel quality indication CQI value is greater than the set CQI threshold.

Optionally, the processing module is specifically configured to: interact with the neighboring network side device to perform one or more of the following information:

Selecting a number of UEs for each TP in the first TP set;

The remaining capacity of the backhaul link of each TP in the first TP set;

a backhaul delay between each TP in the first TP set;

A TP that does not meet the conditions for participating in CoMP transmission.

Optionally, the processing module is specifically configured to:

Each of the divided third TP sets is taken as one of the second TP sets; or

Optionally, the processing module is specifically configured to:

a receiving module, configured to receive measurement information delivered by the network side device, and transmit the received measurement information to the processing module;

a processing module, configured to perform cell measurement based on the measurement information, and determine, according to the measurement result, a first TP set used for CoMP transmission;

a sending module, configured to feed back the first TP set determined by the processing module to the network side device, so that the network side device determines, according to the first TP set, a second TP that participates in CoMP transmission for the user equipment UE set.

In the above device, the receiving module is further configured to:

After the sending module feeds back the determined first TP set to the network side device, receiving the second TP set sent by the network side device.

Optionally, the processing module is specifically configured to:

Information indicating a set of geographic regions to which the UE belongs;

Information indicating a set of SINRs to which the UE belongs;

Optionally, the processing module is specifically configured to: perform channel quality indicator CQI measurement;

The sending module is specifically used to:

The first TP set determined by the processing module and the CQI value of each TP in the first TP set are fed back to the network side device.

Optionally, the processing module is specifically configured to:

With the above solution, the network side device sends the measurement information to the UE in the coverage area when the TP is configured for the UE, so that the UE reports the TP set selected by the UE according to the measurement information without reporting various measurement results. Thereby, the amount of feedback of the measurement result can be greatly reduced. In addition, the network side device may refer to the first TP set reported by each UE, and allocate a second TP set to each UE as a whole, so as to avoid assigning different TP sets to each UE, thereby effectively avoiding different TP sets. Interference.

DRAWINGS

FIG. 1 is a schematic diagram of a UDN scenario applied in an embodiment of the present application;

2 is a schematic structural diagram of a system for selecting a transport node participating in CoMP transmission according to an embodiment of the present application;

3 is a flowchart of a method for selecting a transport node participating in CoMP transmission according to Embodiment 1 of the present application;

4 is a flowchart of a method for selecting a transport node participating in CoMP transmission according to Embodiment 2 of the present application;

Figure 5 is a schematic diagram of a collection of geographical regions;

6 is a schematic diagram of different SINR thresholds;

7 is a flow chart of an embodiment of determining a second TP set within a coverage of a macro base station;

8 is a flow chart of an embodiment of determining a second TP set within a coverage of different macro base stations;

9 is a schematic structural diagram of an apparatus for selecting a transport node participating in CoMP transmission according to Embodiment 3 of the present application;

10 is a schematic structural diagram of an apparatus for selecting a transport node participating in CoMP transmission according to Embodiment 4 of the present application;

FIG. 11 is a schematic structural diagram of a network side device that selects a transport node participating in CoMP transmission according to Embodiment 5 of the present application;

FIG. 12 is a schematic structural diagram of a UE that selects a transport node participating in CoMP transmission according to Embodiment 6 of the present application.

detailed description

The present invention will be further described in detail with reference to the accompanying drawings, in which FIG. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope are the scope of the present application.

The basic idea of the embodiment of the present application is: the network side device sends measurement information to the UE in the coverage area, the UE performs cell measurement based on the measurement information, and selects a first transmission node TP set for CoMP transmission based on the measurement result, The network side device feeds back to the network side device, and the network side device selects a second TP set that is finally involved in the CoMP transmission for the UE according to the feedback result of the UE.

As shown in FIG. 1 , the embodiment of the present application can be applied to, but not limited to, an Ultra-Dense Network (UDN) scenario. With the embodiment of the present application, when the network side device needs to configure the TP that participates in the CoMP transmission for the UE, the UE only needs to report the TP set selected by the UE, and does not need to report various measurement results, thereby greatly reducing the measurement feedback amount. In addition, the network side device can comprehensively consider the first TP set reported by each UE, and allocate a second TP set to each UE as a whole, and can effectively control interference between different second TP sets allocated for each UE.

As shown in FIG. 2, a schematic structural diagram of a system for selecting a transport node participating in CoMP transmission according to an embodiment of the present application includes:

The network side device 21 is configured to send measurement information to the user equipment UE in the coverage area, and receive a first TP set for CoMP transmission, which is sent by each UE based on the measurement information, and is fed back according to each UE. a first TP set, determining, for each UE, a second TP set participating in CoMP transmission;

The user equipment UE 22 is configured to receive measurement information sent by the network side device, perform cell measurement based on the measurement information, and determine a first TP set for CoMP transmission according to the measurement result, and determine the first TP set feedback. To the network side device.

The network side device 21 in the embodiment of the present application may be a macro base station or any other network side device that has a coordinated control function and can communicate with each TP and the UE. The TP in the embodiment of the present application may be a base station (such as a macro base station and a home base station, a micro base station, a femto base station, and the like), a relay node, a remote radio head (RRH), and a radio remote control. A radio remote unit (RRU), an antenna port, and the like, which can provide signal coverage for the UE. The UE in this embodiment of the present application may be any terminal device having a communication function.

In the following, the idea of the present application will be further explained by several specific embodiments.

Embodiment 1

As shown in FIG. 3, a flowchart of a method for selecting a transport node participating in a CoMP transmission according to Embodiment 1 of the present application includes:

S301: The network side device sends measurement information to the UE in the coverage area.

In this step, the network side device may indicate the measurement information to the UE by using a broadcast message, a radio resource control (RRC) signaling, or a downlink control information (DCI). The measurement information may indicate the maximum number of TPs that the UE can select for CoMP transmission.

S302: The UE receives the measurement information from the network side device, performs cell measurement based on the measurement information indicated by the network side device, and determines a first TP set for CoMP transmission according to the measurement result.

Here, the UE may measure Reference Signal Receiving Power (RSRP), Channel Quality Indication (CQI), interference information, etc., and select a first TP set for CoMP transmission for itself based on the measurement result. .

Four types of CoMP scenarios are introduced in 3GPP TR36.819R11, where scenarios 1 and 2 belong to a homogeneous network scenario. In a homogeneous network scenario, different TPs use different physical cell identifiers (PCIs). Scenario 3 and Scenario 4 belong to a heterogeneous network. In a heterogeneous network, multiple TPs, such as various small stations, are deployed in the coverage of a macro base station. In scenario 3, these TPs use different PCIs than the macro base stations. However, in scenario 4, these TPs use the same PCI as the macro base station, and share a Primary Synchronization Channel (PSS), a secondary synchronization channel (SSS), and a Cell Specific Reference (CRS). ), the purpose is to reduce frequent cell handover by the UE. However, this poses a problem. Before the introduction of the CoMP scenario 4, the UE performs RSRP measurement based on Cell-specific reference signals (CRS). In the CoMP scenario 4, due to the coverage of the macro base station. Each TP uses the same PCI, and both use the same CRS. This causes the UE to be unable to distinguish between TPs and thus cannot perform RSRP measurements.

Based on this, the embodiment of the present application provides that, in the CoMP scenarios 1 to 3, the UE performs reference signal reception quality RSRP measurement based on the cell-specific reference signal CRS. In the CoMP scenario 4, the UE is based on the channel state information reference signal (Channel State Indication RS). , CSI-RS) for RSRP measurements. Here, in the CoMP scenario 4, the CSI-RSs used by different TPs are different, so RSRP measurement can be performed based on the CSI-RSs of the respective TPs.

S303: The UE feeds back the determined first TP set to the network side device.

S304: The network side device receives the first TP set from the UE, and determines, according to the first TP set fed back by each UE, a second TP set that participates in CoMP transmission for each UE.

Here, the network side device may count the number of UEs of each TP, and determine the same or different second TP set participating in CoMP transmission for each UE according to the number of UEs that select each TP. For example, there are three UEs, UE1, UE2, and UE3, where the first TP set fed back by UE1 is {TP1, TP2, TP3}, and the first TP set fed back by UE2 is {TP1, TP2, TP3, TP4}, and UE3 feedback The first TP set is {TP1, TP2, TP3, TP5}, and then an identical second TP set {TP1, TP2, TP3} can be determined for the three UEs.

In a specific implementation, the network side device may feed back the second TP set determined by the UE to the UE, where the UE performs CoMP transmission based on the second TP set. Alternatively, the network side device does not feed back the second TP set to the UE. In this case, the first TP set that the UE can report by itself is the second TP set.

In this embodiment, when the network side device configures the TP participating in the CoMP transmission for the UE, the coverage is The UE in the coverage area sends measurement information, so that the UE reports the TP set selected by the UE according to the measurement information. Moreover, the network device allocates the second TP set to each UE as a whole according to the first TP set reported by each UE, thereby avoiding assigning different TP sets to each UE, thereby effectively avoiding interference between different TP sets.

In order to better determine the appropriate second TP set for the UE, and reduce the determined number of the second TP set, in the second embodiment, each UE is divided into multiple configuration sets according to the characteristics of each UE aggregation, and The UEs within the same configuration set indicate the same measurement information.

Embodiment 2

As shown in FIG. 4, a flowchart of a method for selecting a transport node participating in a CoMP transmission according to Embodiment 2 of the present application includes:

S401: The network side device divides each UE that is covered into multiple configuration sets, and indicates the same measurement information and sends the UEs in the same configuration set.

In a specific implementation process, the network side device may divide the UEs that are close to the geographic location and receive the received TP signal into the same configuration set according to the geographical distribution of each UE and the coverage of the signals of each TP. The configuration set configures a type of measurement information. The manner of dividing the configuration set may be: firstly, the UE is roughly partitioned, and each UE is roughly divided into a plurality of geographical area sets, and then each geographic area set is subdivided based on the SINR, such as:

The network side device divides each UE covered into multiple geographical area sets, where each UE in the geographic area set can receive at least one signal of the same TP;

Here, the number of SINR sets can be dynamically adjusted according to the range of SINR values measured by the user.

In the following, the division of the above geographical area set and the division of the SINR set are respectively introduced.

1. Division of geographical collections;

When dividing the above geographical area set, it may be rough based on the geographical location characteristics of the UE aggregation. For example, each residential area in which the UE is centrally distributed is divided into respective geographical area sets.

For a geographical area where UE aggregation is not obvious, a plurality of signal measurement information may be combined to perform division of a geographic area set, for example, based on RSRP values of different TPs measured by each UE, path loss values measured by different UEs for different TPs, The geographical location coordinate information of each UE is divided into. For example, the network side device divides the covered UEs into multiple geographical area sets according to the RSRP value, the path loss value, or the located geographical location information (such as three-dimensional geographic coordinate information or latitude and longitude coordinate information, etc.) measured by the UE. The RSRP value measured by each UE in the same geographical area set to at least one same TP is greater than a set RSRP threshold, or the path loss value measured for at least one identical TP is less than a set path loss value, or a geographical location that is located. The distance between the TP corresponding to the set of geographical regions (which may be a preset TP serving the set of geographic regions) is less than a set distance threshold. It should be noted that the RSRP value, the path loss value, or the geographical location information of the location measured by the UE herein is a measurement result of the UE collected before the network side device determines that the TP set participating in the CoMP transmission needs to be configured for the UE, and It is not that the UE is specifically reporting for CoMP transmission.

As shown, in the CoMP scenario 4, UE 5 are each TP is measured CSI-RSRP, for UE1 ~ UE3, and measurement _A TP TP _B greater than a set of CSI-RSRP RSRP threshold Thr, measured TP _C If the CSI-RSRP of the TP _D is less than or equal to Thr, UE1 to UE3 may be divided into geographical zone sets belonging to TP _A and TP _B coverage. Similarly, for UE4 to UE8, the measured CSI-RSRP of TP _A and TP _B is less than or equal to Thr, and the measured CSI-RSRP of TP _C and TP _D is greater than Thr, then UE4 to UE8 may be classified as belonging to TP _C and A collection of geographic regions covered by TP _D.

Second, the division of the SINR set;

After performing the geographic zone set partitioning, each geographic zone set is further subdivided into individual SINR sets based on the UE's SINR. As shown in FIG. 6, when the SINR threshold measured by the UE is smaller than

The UE is divided into the first SINR set, and the number of CoMP transmission nodes that the UE in the first SINR set can select is N at most; when the SINR threshold measured by the UE is greater than

Less than SINR _thr1

The UE is divided into a second SINR set, and the number of CoMP transmission nodes that can be selected by the UE in the second SINR set is at most NM; when the SINR threshold measured by the UE is greater than SINR _thr1 , the UE is divided into a third SINR set, The UEs in the third SINR set do not need to perform CoMP transmission. It should be noted that, in the embodiment of the present application, the number of the divided SINR sets is not limited. In a specific implementation, the number of the divided SINR sets may be determined according to the value range of the SINR measured by each UE.

After each SINR set is divided and the measurement information of each SINR set is determined, the determined measurement information may be sent to each UE by using a broadcast message or a dedicated signaling. The measurement information delivered by the network side device may include one or more of the following information:

Information indicating a set of geographic regions to which the UE belongs;

Information indicating a set of SINRs to which the UE belongs;

S402: The UE receives the measurement information from the network side device, performs cell measurement based on the measurement information sent by the network side device, and determines a first TP set for CoMP transmission according to the measurement result.

In this step, the UE may measure the RSRP, the CQI, the interference information, and the like of each TP, and may be based on the measurement result of the RSRP and the interference information, and the maximum number of TPs that can be selected indicated by the measurement information sent by the network side device. Selecting a first TP set for CoMP transmission, and feeding back the selected first TP set and CQI information to the network side device, and the network side device may determine, for the UE, the final use for CoMP transmission based on the first TP set and the CQI information. The second TP set. In an actual implementation, the UE may process the measured timely data by using smooth filtering, prediction, and the like, so that the processed data can more truly reflect the received signal level of the UE.

Here, the measurement information sent by the network side device may directly indicate the maximum number of TPs that the UE can select for CoMP transmission, or may only indicate the SINR set and/or the SINR set and the SINR value range to which the UE belongs. Correspondence (this correspondence may also be set in advance) and the like. For example, the UE may determine the associated SINR set based on the measured SINR and the correspondence between the SINR set and the SINR value range, and determine the selectable CoMP transmission based on the correspondence between the SINR set and the maximum TP number. The maximum number of TPs. In addition, you can pass Notifying the UE of the set of geographic regions and the set of SINRs to which the UE belongs, to indicate one of the RSRP, the path loss value, the geographic location, and the threshold condition of the SINR that the TP needs to satisfy when selecting the first TP set. Kind or more.

S403: The UE feeds back the determined first TP set to the network side device.

In a specific implementation, each UE may determine the identity information of each TP in the first TP set that is determined by itself (for example, for the CoMP scenarios 1 to 3, the identifier information may be a PCI, and for the CoMP scenario 4, the identifier information may be In addition to the virtual PCI (VPCI) corresponding to the CSI-RS, other indexes and flags that can distinguish different TPs can be reported to the network side device as the TP identification information and the CQI value. For example, the macro base station of the local cell; specifically, the feedback of the measurement information can be performed by (Physical Uplink Control Channel, PUCCH).

S404: The network side device receives the first TP set from the UE, and determines, according to the first TP set fed back by each UE in each configuration set, at least one second TP set participating in the CoMP transmission.

S405: The network side device notifies the UE of the determined second TP set.

In a specific implementation process, after obtaining the first TP set fed back by each UE, the network side device periodically selects the number of UEs for each TP for each SINR set (that is, counts each of the SINR sets obtained by each TP. The number of votes of the UE), and the number of UEs of each TP can be selected through interaction with the neighboring network side device (adjacent macro base station) through the X2 interface, and the specific interaction information may be: PCI/VPCI of the selected TP and selecting each The number of UEs of the TP corresponding to PCI/VPCI. The network side device selects more voting numbers and better channel conditions from the first TP set according to the first TP set fed back by the UE, the load level of the TP, the remaining capacity of the backhaul link, and the channel condition between the UE and the TP. Each TP with a lower load level and a larger remaining capacity of the backhaul link constitutes a second TP set.

In a specific implementation process, if the TP in the first TP set fed back by the UE is the TP in the coverage of the network side device, the network side device may directly determine the second TP set, as shown in the following case 1: The TP in the first TP set fed back by the UE may have a TP in the coverage of the neighboring network side device in addition to the TP in the coverage of the network side device. In this case, the network side device may be connected to the adjacent network side device. Negotiate to determine the second TP set, see case 2 below.

Case 1:

The TP in the first TP set fed back by the UE is the TP in the coverage of the network side device; the network side device is the first TP set fed back by each UE in each configuration set, for each of the The configuration set determines at least one second TP set participating in the CoMP transmission, including:

Case 2:

The network side device determines, according to the first TP set that is fed back by each UE in each configuration set, at least one second TP set that participates in CoMP transmission for each of the configuration sets, including:

For each configuration set, the network side device selects, from the first TP set fed back by each UE, each first TP set including the TP outside the coverage of the network side device;

The network side device, by negotiating with the neighboring network side device, selects each TP that meets the conditions for participating in the CoMP transmission from each selected first TP set;

Here, the network side device negotiates with the neighboring network side device, and may include:

The network side device interacts with the neighboring network side device to perform one or more of the following information:

Selecting the number of UEs of each TP in the first TP set; in actual implementation, specifically, the identifier information of each TP in the first TP set (such as PCI/VPCI, index, flag, etc. capable of distinguishing different TPs) may be exchanged. And the number of UEs corresponding to each PCI/VPCI;

The remaining capacity of the backhaul link of each TP in the first TP set;

a backhaul delay between each TP in the first TP set;

A TP that does not meet the conditions for participating in CoMP transmission.

In both cases, the conditions for participating in CoMP transmission include one or more of the following conditions:

The load value is lower than the set load threshold;

The backhaul delay is lower than the set delay;

The channel quality indication CQI value is greater than the set CQI threshold.

In addition, in S404, the second TP set determined for each configuration set may have one or more, as described below:

In a specific implementation process, for each configuration set, if the selected TPs of each UE are distributed, the final second TP set may have only one. If the TP selected by each UE can be clearly divided into two subsets, such as subsets A and B, and the number of UEs selecting TP in A and B is less than 1/n of the number of UEs in A and B, There are two second TP sets, and similarly, there can be three or more second TP sets.

Specifically, the network side device determines, according to the first TP set fed back by each UE in each configuration set, at least one second TP set that participates in CoMP transmission for each of the configuration sets, including:

Each of the divided third TP sets is taken as one of the second TP sets; or

In S405, after the network side device determines the at least one second TP set for each configuration set, the TP selected by each UE may be further combined to determine the second service serving each UE in each configuration set. The TP is aggregated and notified to the UE to instruct the UE to perform CoMP transmission using the notified second TP set. In addition, the network side device can also notify that the measured SINR value is greater than a certain setting gate. The UE of the limit (such as the UE in the third SINR set mentioned in the above S401 regarding the division of the SINR set) performs conventional signal transmission, that is, does not perform CoMP transmission. Specifically, the UE may be notified of the second TP set by broadcast signaling or dedicated signaling.

In a specific implementation, if the determined second TP set is one for any configuration set, each TP in the determined second TP set cooperates to communicate with each UE in the configuration set. If the determined second TP set is multiple, confirm the UE that selects the TP in each of the second TP sets. If the TP selected by the UE belongs to only one of the second TP sets, the second TP set is adopted. The UE provides a service; if there is a TP in the at least two second TP sets selected by the UE, the SINR or the measurement measured by the UE when performing CoMP transmission according to each of the at least two second TP sets respectively The interference value is that the UE selects a second TP set from the at least two second TP sets for CoMP transmission. For example, for the second TP set A and B, the SINR measured by the UE is SINR _A and SINR _B , respectively, and SINR _A > SINR _B , then the second TP set A is selected to provide services for the UE. Similarly, if the interference values measured by the UE are the interference value A and the interference value B for the second TP set A and B, respectively, and the interference value A < the interference value B, the second TP set A is selected to provide the UE with the service.

For the foregoing case 1 and case 2, the network side device is taken as a macro base station as an example, and the implementation steps of determining the second TP set by the lower macro base station are respectively introduced.

As shown in FIG. 7, a flowchart for implementing an embodiment of a second TP set within a coverage of a macro base station includes the following steps:

S701: After receiving the first TP set fed back by the UE in each configuration set, the macro base station selects, from each of the first TP sets fed back by each UE, only the coverage of the macro base station in the coverage of the macro base station. Each first TP set of the TP;

S702: Remove, from each selected first TP set, a TP that is not suitable for CoMP transmission according to a load level of each TP, a remaining capacity of the backhaul link, and a backhaul delay;

Here, the remaining capacity of the backhaul link refers to the remaining capacity of the backhaul link that the TP itself reaches the core network, or the remaining capacity of the backhaul link that the TP reaches the core network through the X2 interface with other TPs.

S703: Remaining TPs from each first TP set according to CQI values of each TP reported by the UE. The TPs whose CQI values are greater than the set CQI threshold are selected; or, according to the order of the CQI values, the preset number of TPs are sequentially filtered out from the remaining TPs of the first TP sets.

S704: For each configuration set, divide the TP in each of the filtered first TP sets into N third TP sets; wherein, among the N third TP sets, any two third TP sets serve The number of identical UEs is less than 1/n of the number of UEs served by the two third TP sets; wherein N is a positive integer greater than or equal to 2, and n is a natural number greater than or equal to 1;

S705: For each third TP set, select, according to the number of UEs of each TP, a set number of TPs from the third TP set, as one of the second TP sets; wherein, the second TP The network side device is included in the collection.

Here, the set number of TPs having the highest number of votes is sequentially selected from each of the third TP sets in order of the number of votes obtained by each TP being large to small.

S706: Determine a second TP set for each UE according to the at least one second TP set determined for each configuration set, and the first TP set fed back by each UE in each configuration set.

That is, for any configuration set, if the determined second TP set is one, each TP in the determined second TP set cooperates to communicate with each UE in the configuration set. If the determined second TP set is multiple, the second TP set to which the TP in the first TP set selected by the UE belongs is confirmed. If the TP selected by the UE belongs to only one of the second TP sets, the second one is adopted. The TP set provides a service for the UE; if there is a TP in the at least two second TP sets selected by the UE, the UE performs the CoMP transmission according to each of the at least two second TP sets. The signal to interference plus noise ratio SINR or interference value is used by the UE to select a second TP set from the at least two second TP sets for CoMP transmission.

S707: The macro eNB notifies the UE of the second TP set determined by each UE, and is used to instruct the UE to perform CoMP transmission based on the second TP set.

As shown in FIG. 8, a flowchart of an implementation manner for determining a second TP set in a coverage of different macro base stations includes the following steps:

S801: After receiving the first TP set fed back by the UE in each configuration set, the macro base station selects, in the first TP set fed back by each UE, the coverage included in the macro base station for each configuration set. Each first TP set of TPs outside the range.

Here, each of the first TP sets selected by the macro base station may include both the TP within its own coverage and the TP outside the coverage of other macro base stations.

S802: The macro base station negotiates with the neighboring macro base station, and removes the TP that is not suitable for CoMP transmission according to the load level of each TP, the remaining capacity of the backhaul link, and the backhaul delay from each selected first TP set.

In a specific implementation, the macro base station may interact with the neighboring macro base station to load the TP load level, the backhaul link remaining capacity, the backhaul delay, and the like, or directly exchange the information of the TP that is not suitable for CoMP transmission confirmed by each macro base station. .

S803: The macro base station selects, according to the CQI value of each TP reported by the UE, each TP whose CQI value is greater than a set CQI threshold from the remaining TPs of the first TP set; or, according to the CQI value, the order of the CQI is from large to small. A preset number of TPs are sequentially filtered out from the remaining TPs of the respective first TP sets.

S804: For each configuration set, divide the TP in each of the filtered first TP sets into N third TP sets; wherein, among the N third TP sets, any two third TP sets serve The number of identical UEs is less than 1/n of the number of UEs served by the two third TP sets; wherein N is a positive integer greater than or equal to 2, and n is a natural number greater than or equal to 1;

S805: For each third TP set, select, according to the number of UEs of each TP, a set number of TPs from the third TP set, as one of the second TP sets; wherein, the second TP The network side device is included in the collection.

S806: Determine a second TP set for each UE according to the at least one second TP set determined for each configuration set and the first TP set fed back by each UE in each configuration set.

S807: The macro eNB notifies the UE of the second TP set determined by each UE, and is used to instruct the UE to perform CoMP transmission based on the second TP set.

In this embodiment, the network side device divides the UEs in its coverage into multiple configuration sets, and determines a more suitable TP set for each configuration set according to the status of each configuration set, thereby improving communication efficiency.

Embodiment 3

FIG. 9 is a schematic structural diagram of an apparatus for selecting a transport node participating in CoMP transmission according to Embodiment 3 of the present application. The device may be a network side device such as a macro base station. The device can also be integrated as a functional module with network side devices, including:

The transmitting module 91 is configured to send measurement information to the user equipment UE in the coverage of the network side device;

The receiving module 92 is configured to receive, by each UE, the first transmission node TP set for CoMP transmission after performing cell measurement feedback based on the measurement information, and transmit the first TP set to the processing module 93;

The processing module 93 is configured to determine, according to the first TP set received by the receiving module 92, a second TP set that participates in CoMP transmission for each UE.

Here, the processing steps of the above-mentioned function of the above-mentioned function of the transmitting module 91, the receiving module 92, and the processing module 93 are described in detail in the description of the steps of the network side device in the first embodiment and the second embodiment, and details are not described herein again.

Optionally, the processing module 93 is further configured to: divide the covered UEs into multiple configuration sets; the sending module 91 is specifically configured to: indicate the same measurement information for the UEs in the same configuration set;

The processing module 93 is specifically configured to:

Optionally, the processing module 93 is specifically configured to:

Information indicating a set of geographic regions to which the UE belongs;

Information indicating a set of SINRs to which the UE belongs;

Optionally, the processing module 93 is specifically configured to:

The path loss value measured by each UE for different TPs;

Geographical location coordinate information of each UE.

Optionally, the processing module 93 is specifically configured to:

The load value is lower than the set load threshold;

The backhaul delay is lower than the set delay;

The channel quality indication CQI value is greater than the set CQI threshold.

Optionally, the processing module 93 is specifically configured to: interact with the neighboring network side device in the following information. One or more of:

Selecting a number of UEs for each TP in the first TP set;

The remaining capacity of the backhaul link of each TP in the first TP set;

a backhaul delay between each TP in the first TP set;

A TP that does not meet the conditions for participating in CoMP transmission.

Optionally, the processing module 93 is specifically configured to:

Each of the divided third TP sets is taken as one of the second TP sets; or

Optionally, the processing module 93 is specifically configured to:

Embodiment 4

As shown in FIG. 10, it is a schematic structural diagram of a device for selecting a transport node that participates in CoMP transmission according to Embodiment 4 of the present application. The device may be a user equipment UE, or may be integrated into a UE as a function module, including:

The receiving module 101 is configured to receive measurement information delivered by the network side device, and transmit the received measurement information to the processing module 102;

The processing module 102 is configured to perform cell measurement based on the measurement information, and according to the measurement result, Determining a first set of TPs for CoMP transmission;

The transmitting module 103 is configured to feed back the first TP set determined by the processing module 102 to the network side device, so that the network side device determines, according to the first TP set, the user equipment UE to participate in the CoMP transmission. Two TP collections.

Here, the processing steps of the foregoing receiving module 101, the processing module 102, and the transmitting module 103 for implementing the foregoing functions are described in detail in the first embodiment and the second embodiment, and the description of the steps performed by the UE is not described herein.

Optionally, the receiving module 101 is further configured to:

After the transmitting module 103 feeds back the determined first TP set to the network side device, receiving the second TP set sent by the network side device.

Optionally, the processing module 102 is specifically configured to:

Information indicating a set of geographic regions to which the UE belongs;

Information indicating a set of SINRs to which the UE belongs;

Optionally, the processing module 102 is specifically configured to: perform channel quality indicator CQI measurement;

The transmitting module 103 is specifically configured to:

The first TP set determined by the processing module 102 and the CQI value of each TP in the first TP set are fed back to the network side device.

Optionally, the processing module 102 is specifically configured to:

Embodiment 5

FIG. 11 shows a possible design structure of the network side device involved in the above embodiment. Simplified schematic diagram, the network side device can be a base station. The network side device may include a memory 111, a transmitter 112, a receiver 113, a processor 114, and a bus 115. The memory 111, the transmitter 112, the receiver 113, and the processor 114 are communicably connected by a bus 115.

The memory 111 may be a read only memory (ROM), a static storage device, a dynamic storage device, or a random access memory (RAM). The memory 111 can store an operating system and other applications. The program code for implementing the technical solution provided by the embodiment of the present invention is stored in the memory 111 and executed by the processor 114 when the technical solution provided by the embodiment of the present invention is implemented by software or firmware.

The transmitter 112 and the receiver 113 are used between other devices or communication networks (such as, but not limited to, Ethernet, Radio Access Network (RAN), Wireless Local Area Network (WLAN), etc.) Communication.

The processor 114 can be a general-purpose central processing unit (CPU), a microprocessor, an application specific integrated circuit (ASIC), or one or more integrated circuits for executing related programs. The technical solution provided by the embodiment of the present invention is implemented. The processor 114 can also be a network processor (English: network processor, abbreviation: NP). Either a combination of CPU and NP, or a combination of NP and hardware chips.

It should be noted that although the hardware shown in FIG. 11 only shows the memory 111, the transmitter 112, the receiver 113, the processor 114, and the bus 115, in a specific implementation process, those skilled in the art will understand that the network side The device also contains other devices necessary to get it running. At the same time, those skilled in the art will appreciate that hardware devices that implement other functions may also be included, depending on the particular needs.

As an example, the transmitter 112 is configured to support the network side device to perform step S301 in the first embodiment shown in FIG. 3, that is, to send measurement information to the UE in the coverage.

The receiver 113 is configured to support the network side device to perform the step of receiving the first TP set from the UE in step S304 in the embodiment shown in FIG. 3.

The processor 114 is coupled to the memory 111, the transmitter 112, and the receiver 113, and is configured to support the network side device to perform the first TP set fed back according to each UE in step S304 in the first embodiment shown in FIG. The step of determining a second TP set for CoMP transmission for each UE.

Optionally, the processor 114 is further configured to support the network side device to perform, in step S401 in the second embodiment shown in FIG. 4, the UEs in the coverage of the network side device into multiple configuration sets, and are in the same configuration set. The step of indicating the same measurement information by the UE, and performing the first TP set fed back by each UE in each configuration set in step S404 in the second embodiment shown in FIG. 4, determining at least one participating CoMP transmission for each configuration set. The second TP set.

The transmitter 112 is further configured to support the network side device to separately send corresponding measurement information to the multiple configuration sets in step S401 in the second embodiment shown in FIG. 4 .

For the specific implementation of the transmitter 112, the receiver 113, and the processor 114, refer to the first embodiment and the second embodiment, and details are not described herein again.

Embodiment 6

FIG. 12 shows a simplified schematic diagram of one possible configuration of the user equipment UE involved in the above embodiment. The UE may include a memory 121, a transmitter 122, a receiver 123, a processor 124, and a bus 125. The memory 121, the transmitter 122, the receiver 123, and the processor 124 are communicably connected by a bus 125.

The memory 121 may be a read only memory (ROM), a static storage device, a dynamic storage device, or a random access memory (RAM). The memory 121 can store an operating system and other applications. When the technical solution provided by the embodiment of the present invention is implemented by software or firmware, the program code for implementing the technical solution provided by the embodiment of the present invention is stored in the memory 121 and executed by the processor 124.

The transmitter 122 and the receiver 123 are used between other devices or communication networks (such as, but not limited to, Ethernet, Radio Access Network (RAN), Wireless Local Area Network (WLAN), etc.) Communication.

The processor 124 can be a general-purpose central processing unit (CPU), a microprocessor, an application specific integrated circuit (ASIC), or one or more integrated circuits for executing related programs. The technical solution provided by the embodiment of the present invention is implemented.

It should be noted that although the hardware shown in FIG. 12 only shows the memory 121, the transmitter 122, the receiver 123, the processor 124, and the bus 125, in a specific implementation process, those skilled in the art should understand that the UE also Contains other devices necessary to achieve proper operation. At the same time, those skilled in the art will appreciate that hardware devices that implement other functions may also be included, depending on the particular needs.

As an example, the receiver 123 is configured to support the UE to perform the step of receiving the measurement information from the network side device in step S302 in the first embodiment shown in FIG.

The processor 124 is configured to support the UE to perform cell measurement based on the measurement information indicated by the network side device in step S302 in the first embodiment shown in FIG. 3, and determine a first TP set for CoMP transmission according to the measurement result.

The transmitter 122 is configured to support the UE to perform the first TP set determined in step S303 in the first embodiment shown in FIG.

Optionally, the receiver 123 is further configured to support the UE to perform the step of receiving the measurement information from the network side device in step S402 in the second embodiment shown in FIG. 4 .

The processor 124 is further configured to support the UE to perform cell measurement based on the measurement information sent by the network side device in step S402 in the second embodiment shown in FIG. 4, and determine a first TP set for CoMP transmission according to the measurement result.

The transmitter 122 is configured to support the UE to perform the first TP set determined in step S403 in the second embodiment shown in FIG.

For the specific implementation of the transmitter 121, the receiver 123, and the processor 124, refer to the first embodiment and the second embodiment, and details are not described herein again.

Those skilled in the art will appreciate that embodiments of the present application can be provided as a method, system, or computer program product. Thus, the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination of software and hardware. Moreover, the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the present application. It should be understood that the flow chart can be implemented by computer program instructions And/or a combination of the processes and/or blocks in the block diagrams, and the flowcharts and/or blocks in the flowcharts. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

While the preferred embodiment of the present application has been described, those skilled in the art can make further changes and modifications to these embodiments once they are aware of the basic inventive concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and the modifications and

It is apparent that those skilled in the art can make various changes and modifications to the embodiments of the present application without departing from the spirit and scope of the embodiments of the present application. Thus, it is intended that the present invention cover the modifications and variations of the embodiments of the present invention.

Claims

A method for selecting a transport node participating in coordinated multi-point CoMP transmission, the method comprising:

The network side device sends measurement information to the user equipment UE in the coverage area;

Receiving, by the network side device, a first transmission node TP set for CoMP transmission, which is performed by each UE after performing cell measurement based on the measurement information;

The network side device determines, according to the first TP set fed back by each UE, a second TP set participating in CoMP transmission for each UE.
The method according to claim 1, wherein the network side device sends measurement information to the UEs in the coverage area, including:

The network side device divides the covered UEs into multiple configuration sets, and indicates the same measurement information for the UEs in the same configuration set;

The network side device determines, according to the first TP set fed back by each UE, a second TP set that participates in CoMP transmission for each UE, including:

The network side device determines, according to the first TP set fed back by each UE in each configuration set, at least one second TP set participating in CoMP transmission for each of the configuration sets.
The method according to claim 2, wherein the network side device divides the covered UEs into a plurality of configuration sets, including:

The network side device divides each UE covered into multiple geographical zone sets, where each UE in the geographic zone set can receive at least one signal of the same TP;

For each geographic zone set, each UE in the geographic zone set is divided into different SINR sets according to the signal to interference and noise ratio SINR measured by each UE in the geographic zone set, and each SINR set is used as one configuration. A set; wherein different SINR sets respectively correspond to different SINR ranges.
The method of claim 3, wherein the measurement information comprises one or more of the following information:

Information indicating the maximum number of TPs that the UE can select for CoMP transmission;

Information indicating a set of geographic regions to which the UE belongs;

Information indicating a set of SINRs to which the UE belongs;

Information indicating a range of SINR values corresponding to different SINR sets.
The method according to claim 3 or 4, wherein the network side device divides the covered UEs into a plurality of geographical area sets, including:

The network side device divides the covered UEs into multiple geographic zone sets according to one or more of the following information:

a reference signal reception quality RSRP value of different TPs measured by each UE;

The path loss value measured by each UE for different TPs;

Geographical location coordinate information of each UE.
The method according to claim 5, wherein the RSRP is an RSRP based on a cell-specific reference signal CRS or an RSRP based on a channel state information reference signal CSI-RS.
The method according to any one of claims 2 to 6, wherein the network side device determines at least one participating CoMP for each of the configuration sets according to the first TP set fed back by each UE in each configuration set. The second set of TPs transmitted, including:

For each configuration set, the network side device selects, from the first TP set fed back by each UE, each first TP set of the TP that is only included in the coverage of the network side device;

The network side device selects, from each of the selected first TP sets, each TP that meets the conditions for participating in the CoMP transmission;

The network side device determines, according to each TP selected from each selected first TP set, at least one second TP set participating in CoMP transmission for each of the configuration sets.
The method according to any one of claims 2 to 6, wherein the network side device determines at least one participating CoMP for each of the configuration sets according to the first TP set fed back by each UE in each configuration set. The second set of TPs transmitted, including:

For each configuration set, the network side device selects, from the first TP set fed back by each UE, each first TP set including the TP outside the coverage of the network side device;

The network side device, by negotiating with the neighboring network side device, selects each TP that meets the conditions for participating in the CoMP transmission from each selected first TP set;

The network side device determines, according to each TP selected from each selected first TP set, at least one second TP set participating in CoMP transmission for each of the configuration sets.
The method according to claim 7 or 8, wherein the condition for participating in the CoMP transmission comprises one or more of the following conditions:

The load value is lower than the set load threshold;

The remaining capacity of the backhaul link is higher than the set capacity threshold;

The backhaul delay is lower than the set delay;

The channel quality indication CQI value is greater than the set CQI threshold.
The method of claim 8, wherein the network side device negotiates with the neighboring network side device, including:

The network side device interacts with the neighboring network side device to perform one or more of the following information:

Selecting a number of UEs for each TP in the first TP set;

The remaining capacity of the backhaul link of each TP in the first TP set;

a backhaul delay between each TP in the first TP set;

A TP that does not meet the conditions for participating in CoMP transmission.
The method according to any one of claims 2 to 10, wherein the network side device determines at least one participating CoMP for each of the configuration sets according to the first TP set fed back by each UE in each configuration set. The second set of TPs transmitted, including:

For each configuration set, each TP in the first TP set fed back by each UE is divided into N third TP sets; where N is a positive integer, and when N is greater than or equal to 2, in N third TPs In the set, the number of the same UE served by any two third TP sets is less than 1/n of the number of UEs served by the two third TP sets, and n is a natural number greater than or equal to 1;

Each of the divided third TP sets is taken as one of the second TP sets; or

For each third TP set, according to the number of UEs in which each TP is selected, a set number of TPs are selected from the third TP set as one of the second TP sets; wherein the second TP The network side device is included in the collection.
The method according to any one of claims 2 to 11, wherein, for each configuration set, the network side device determines, after the at least two second TP sets participating in CoMP transmission, for each of the configuration sets, include:

And if each TP in the first TP set fed back by any UE in each configuration set belongs to at least two second TP sets, according to each second TP set in the at least two second TP sets When the CoMP transmission is performed separately, the SINR measured by the UE is used by the UE to select a second TP set from the at least two second TP sets for CoMP transmission.
A method for selecting a transport node participating in coordinated multi-point CoMP transmission, the method comprising:

The user equipment UE receives measurement information delivered by the network side device;

The UE performs cell measurement based on the measurement information, and determines a first TP set for CoMP transmission according to the measurement result;

The UE feeds back the determined first TP set to the network side device, so that the network side device determines, according to the first TP set, a second TP set that participates in CoMP transmission according to the first TP set.
The method according to claim 13, wherein after the UE feeds back the determined first TP set to the network side device, the method further includes:

The UE receives the second TP set sent by the network side device.
The method according to claim 13 or 14, wherein the UE performs cell measurement based on the measurement information, including:

The UE performs reference signal reception quality RSRP measurement based on the cell-specific reference signal CRS, or

The RSRP measurement is performed based on the channel state information reference signal CSI-RS.
The method according to any one of claims 13 to 15, wherein the measurement information includes one or more of the following information:

Information indicating the maximum number of TPs that the UE can select for CoMP transmission;

Information indicating a set of geographic regions to which the UE belongs;

Information indicating a set of SINRs to which the UE belongs;

Information indicating a range of SINR values corresponding to different SINR sets.
The method according to any one of claims 13 to 16, wherein the UE performs cell measurement based on the measurement information, and further includes:

Performing, by the UE, channel quality indication CQI measurement;

The UE feeds back the determined first TP set to the network side device, including:

The UE feeds back the determined first TP set and the CQI value of each TP in the first TP set to the network side device.
The method according to any one of claims 13 to 17, wherein the UE determines the first TP set for CoMP transmission according to the measurement result, including:

The UE determines a first TP set for CoMP transmission according to the measurement result and the maximum number of TPs that can be selected based on the measurement information.
An apparatus for selecting a transmission node participating in cooperative multi-point CoMP transmission, characterized in that the apparatus comprises:

a sending module, configured to send measurement information to a user equipment UE in a coverage area of the network side device;

a receiving module, configured to receive, by each UE, a first transmission node TP set for CoMP transmission after performing cell measurement feedback based on the measurement information, and transmit the first TP set to a processing module;

And a processing module, configured to determine, according to the first TP set received by the receiving module, a second TP set that participates in CoMP transmission for each UE.
The device of claim 19, wherein

The processing module is further configured to: divide the covered UEs into multiple configuration sets; the sending module is specifically configured to: indicate the same measurement information for the UEs in the same configuration set;

The processing module is specifically configured to:

And determining, according to the first TP set fed back by each UE in each configuration set, at least one second TP set participating in the CoMP transmission for each of the configuration sets.
The device according to claim 20, wherein the processing module is specifically configured to:

Dividing each covered UE into a plurality of geographical zone sets, wherein each UE in each geographic zone set A signal capable of receiving at least one identical TP; for each geographic zone set, each UE within the geographic zone set is divided into different SINR sets according to a signal to interference and noise ratio SINR measured by each UE in the geographic zone set Each SINR set is used as one of the configuration sets; wherein different SINR sets respectively correspond to different SINR values.
The apparatus according to claim 21, wherein said measurement information includes one or more of the following information:

Information indicating the maximum number of TPs that the UE can select for CoMP transmission;

Information indicating a set of geographic regions to which the UE belongs;

Information indicating a set of SINRs to which the UE belongs;

Information indicating a range of SINR values corresponding to different SINR sets.
The device according to claim 21 or 22, wherein the processing module is specifically configured to:

Each of the covered UEs is divided into a plurality of geographical zone sets according to one or more of the following information:

a reference signal reception quality RSRP value of different TPs measured by each UE;

The path loss value measured by each UE for different TPs;

Geographical location coordinate information of each UE.
The apparatus according to claim 23, wherein the RSRP is an RSRP based on a cell-specific reference signal CRS or an RSRP based on a channel state information reference signal CSI-RS.
The device according to any one of claims 20 to 24, wherein the processing module is specifically configured to:

For each configuration set, from the first TP set fed back by each UE, select each first TP set of the TP that is only included in the coverage of the network side device; and select from each selected first TP set. Each TP that meets the conditions for participating in the CoMP transmission; and at least one second TP set participating in the CoMP transmission is determined for each of the configuration sets according to each TP selected from the selected first TP sets.
The device according to any one of claims 20 to 24, wherein the processing module is specifically configured to:

For each configuration set, the first TP set including the TP outside the coverage of the network side device is selected from the first TP set fed back by each UE; and the selected one is selected by negotiating with the neighboring network side device. In each of the first TP sets, each TP that meets the conditions for participating in the CoMP transmission is filtered out; and at least one part participating in the CoMP transmission is determined for each of the configuration sets according to each TP selected from the selected first TP sets. Two TP collections.
The apparatus according to claim 25 or 26, wherein the condition for participating in the CoMP transmission comprises one or more of the following conditions:

The load value is lower than the set load threshold;

The remaining capacity of the backhaul link is higher than the set capacity threshold;

The backhaul delay is lower than the set delay;

The channel quality indication CQI value is greater than the set CQI threshold.
The device according to claim 26, wherein the processing module is specifically configured to: interact with one or more of the following information with a neighboring network side device:

Selecting a number of UEs for each TP in the first TP set;

The remaining capacity of the backhaul link of each TP in the first TP set;

a backhaul delay between each TP in the first TP set;

A TP that does not meet the conditions for participating in CoMP transmission.
The device according to any one of claims 20 to 28, wherein the processing module is specifically configured to:

For each configuration set, each TP in the first TP set fed back by each UE is divided into N third TP sets; where N is a positive integer, and when N is greater than or equal to 2, in N third TPs In the set, the number of the same UE served by any two third TP sets is less than 1/n of the number of UEs served by the two third TP sets, and n is a natural number greater than or equal to 1;

Each of the divided third TP sets is taken as one of the second TP sets; or

For each third TP set, according to the number of UEs in which each TP is selected, a set number of TPs are selected from the third TP set as one of the second TP sets; wherein, in the second TP set The network side device is included.
The device according to any one of claims 20 to 29, wherein the processing module is specifically configured to:

For each configuration set, after determining at least two second TP sets participating in the CoMP transmission for each of the configuration sets, if each of the first TP sets in the first TP set fed back by any one of the configuration sets is And the SINR measured by the UE when the CoMP transmission is performed according to each of the at least two second TP sets, and the UE is from the at least two second TPs. A second TP set is selected in the set for CoMP transmission.
An apparatus for selecting a transmission node participating in cooperative multi-point CoMP transmission, characterized in that the apparatus comprises:

a receiving module, configured to receive measurement information delivered by the network side device, and transmit the received measurement information to the processing module;

a processing module, configured to perform cell measurement based on the measurement information, and determine, according to the measurement result, a first TP set used for CoMP transmission;

a sending module, configured to feed back the first TP set determined by the processing module to the network side device, so that the network side device determines, according to the first TP set, a second TP that participates in CoMP transmission for the user equipment UE set.
The device of claim 31, wherein the receiving module is further configured to:

After the sending module feeds back the determined first TP set to the network side device, receiving the second TP set sent by the network side device.
The device according to claim 31 or 32, wherein the processing module is specifically configured to:

Performing reference signal reception quality RSRP measurement based on the cell-specific reference signal CRS, or

The RSRP measurement is performed based on the channel state information reference signal CSI-RS.
The apparatus according to any one of claims 31 to 33, wherein the measurement information includes one or more of the following information:

Information indicating the maximum number of TPs that the UE can select for CoMP transmission;

Information indicating a set of geographic regions to which the UE belongs;

Information indicating a set of SINRs to which the UE belongs;

Information indicating a range of SINR values corresponding to different SINR sets.
The device according to any one of claims 31 to 34, wherein the processing module is specifically configured to: perform channel quality indication CQI measurement;

The sending module is specifically configured to:

The first TP set determined by the processing module and the CQI value of each TP in the first TP set are fed back to the network side device.
The device according to any one of claims 31 to 35, wherein the processing module is specifically configured to:

A first set of TPs for CoMP transmission is determined based on the measurement results and the maximum number of TPs that can be selected based on the measurement information.