CN107682138B

CN107682138B - Communication method and device

Info

Publication number: CN107682138B
Application number: CN201711079787.5A
Authority: CN
Inventors: 刘震; 廖礼宇; 申如意
Original assignee: Comba Telecom Systems China Ltd
Current assignee: Comba Network Systems Co Ltd
Priority date: 2017-11-06
Filing date: 2017-11-06
Publication date: 2020-12-08
Anticipated expiration: 2037-11-06
Also published as: WO2019085692A1; CN107682138A

Abstract

The application discloses a communication method, which comprises the following steps: a base station acquires the utilization rate of a Physical Uplink Control Channel (PUCCH) resource for bearing Channel State Information (CSI), wherein the utilization rate is the proportion of the currently allocated PUCCH resource for bearing the CSI to the total number of PUCCH resources for bearing the CSI in a system; and the base station allocates PUCCH resources for carrying CSI to the terminal according to the utilization rate. The terminal can report the CSI information of the terminal for the base station in time while saving the PUCCH resource bearing the CSI, and reflect the downlink channel quality of the terminal, so as to solve the problem that the downlink channel quality information of the terminal cannot be accurately obtained due to the shortage of the PUCCH resource bearing the CSI.

Description

Communication method and device

Technical Field

The present application relates to the field of communications, and in particular, to a method and an apparatus for communication.

Background

The Channel State Information (CSI) is reported by a terminal as Channel State Information of a base station, and is composed of a Channel Quality Indicator (CQI), a Precoding Matrix Indicator (PMI), a Precoding Type Indicator (PTI), and a rank Indicator (Ran Indication, RI). The terminal feeds back the downlink channel quality information to the base station by reporting the CSI information, so that the base station can select a more reliable Modulation and Coding Scheme (MCS) and better time-frequency scheduling for the terminal. The terminal periodically reports the CSI through a Physical Uplink Control Channel (PUCCH resource for reporting CSI), and the time and frequency occupied by the PUCCH resource for carrying the CSI are allocated by the base station.

In an heterogeneous network formed by a macro base station and a micro base station, in order to reduce interference between macro and micro base stations, the macro base station can configure Almost Blank Subframes (ABS), and on the subframes, the macro base station does not send downlink data, so that the transmission power of the macro base station can be set at a lower level, and the interference to the micro base station is also smaller; for a terminal in a micro base station, the interference level suffered between an ABS subframe and a non-ABS subframe varies greatly, and it is difficult to accurately reflect the interference level of any subframe type if the ABS subframe and the non-ABS subframe are not distinguished. In the prior art, two CSI measurement subsets are generally configured for a terminal, and the terminal can measure and report an ABS subframe and a non-ABS subframe respectively to reflect different interference levels of the two subframes. According to the protocol specification, if two CSI measurement subsets are configured for the terminal, 2 PUCCH resources for carrying CSI need to be configured for the terminal.

Meanwhile, in order to improve the CSI receiving performance, the 3GPP R10 release supports a Space Orthogonal-Resource Transmit Diversity (SORTD) function, that is, two antennas are allowed to use different PUCCH Resource code domains at the same time, and if a terminal configures two CSI measurement subsets and starts the SORTD function, 4 PUCCH resources need to be allocated to the terminal.

When the number of terminals is increased, the method easily causes the shortage of PUCCH resources for carrying CSI, so that the first accessed terminal occupies most of the PUCCH resources for carrying CSI, and the second accessed terminal can only occupy a small part of the PUCCH resources for carrying CSI or has no distributable PUCCH resources for carrying CSI. In a scene with ABS subframe configuration, how to reasonably allocate PUCCH resources carrying CSI as needed according to the utilization of PUCCH resources carrying CSI, so as to improve the utilization of PUCCH resources carrying CSI, so as to accurately obtain measurement information of a terminal, is an urgent problem to be solved.

Disclosure of Invention

The embodiment of the application provides a communication method and device, and PUCCH resources bearing CSI are reasonably distributed according to requirements according to the utilization condition of the PUCCH resources bearing the CSI. The terminal can report the CSI information of the terminal for the base station in time while saving the PUCCH resource bearing the CSI, and reflect the downlink channel quality of the terminal, so as to solve the problem that the downlink channel quality information of the terminal cannot be accurately obtained due to the shortage of the PUCCH resource bearing the CSI.

The embodiment of the application provides a communication method, which comprises the following steps:

a base station acquires the utilization rate of a Physical Uplink Control Channel (PUCCH) resource for bearing Channel State Information (CSI), wherein the utilization rate is the proportion of the currently allocated PUCCH resource for bearing the CSI to the total number of PUCCH resources for bearing the CSI in a system;

and the base station allocates PUCCH resources for carrying CSI to the terminal according to the utilization rate.

A possible embodiment is that, the base station allocates, to the terminal according to the utilization rate, a PUCCH resource for carrying CSI, and includes:

if the utilization rate is smaller than a preset first threshold A, distributing N PUCCH resources for the terminal;

if the utilization rate is greater than or equal to the preset first threshold A and less than a preset second threshold B, allocating M PUCCH resources for the terminal;

wherein N, M is a positive integer, and N is greater than M.

In a possible embodiment, N is 4, and when the utilization ratio is smaller than the preset first threshold a, the 4 PUCCH resources allocated to the terminal include: 1 PUCCH resource used for reporting CSI containing almost blank subframe ABS and sent at antenna P0 port; 1 PUCCH resource used for reporting CSI which contains non-ABS and is sent at an antenna port P0; 1 PUCCH resource used for reporting CSI which contains ABS and is sent at an antenna port P1; and 1 PUCCH resource for reporting CSI, which includes non-ABS and is transmitted at antenna P1 port.

In one possible embodiment, M is 2;

when the utilization rate is greater than or equal to the preset first threshold a and less than the preset second threshold B, the 2 PUCCH resources allocated to the terminal include: 1 PUCCH resource used for reporting CSI which contains ABS and is sent at an antenna port P0; 1 PUCCH resource used for reporting CSI which contains non-ABS and is sent at an antenna port P0; alternatively, the first and second electrodes may be,

the 2 PUCCH resources allocated to the terminal include: 1 PUCCH resource used for reporting CSI which contains ABS and is sent at an antenna port P1; 1 PUCCH resource used for reporting CSI which contains non-ABS and is sent at an antenna port P1; alternatively, the first and second electrodes may be,

the 2 PUCCH resources allocated to the terminal include: 1 PUCCH resource used for reporting CSI which contains ABS and is sent at an antenna port P0; 1 PUCCH resource used for reporting CSI which contains ABS and is sent by an antenna P1; alternatively, the first and second electrodes may be,

the 2 PUCCH resources allocated to the terminal include: 1 PUCCH resource used for reporting non-ABS and transmitting CSI at antenna P0; and 1 PUCCH resource used for reporting non-ABS and transmitting CSI at an antenna port P1.

In one possible embodiment, the method further comprises:

determining whether the location of the terminal is located in a center area or an edge area of the base station.

In one possible embodiment, the method further comprises:

if the utilization rate is greater than or equal to the preset second threshold value B, recovering L allocated PUCCH resources; the L is equal to α × (B-a) × CSI _ pucchNum, where CSI _ pucchNum is a total number of PUCCH resources configured by the base station for carrying CSI, α is an adjustment factor, B is the preset second threshold B, a is the preset first threshold a, and B > a.

In one possible embodiment, the method further comprises:

if the utilization rate is greater than or equal to the preset second threshold value B, 1 PUCCH resource is allocated to the terminal;

if the position of the terminal is determined to be located in the central area of the base station, 1 PUCCH resource allocated to the terminal is a PUCCH resource used for uploading CSI (channel state information) which contains non-ABS and is sent at an antenna port P0 or a port P1;

if the position of the terminal is determined to be located in the edge area of the base station, 1 PUCCH resource allocated to the terminal is a PUCCH resource for uploading CSI, which includes ABS and is transmitted at antenna port P0 or port P1.

In one possible embodiment, the method further comprises:

and if the SINR of the 1 PUCCH resource allocated to the terminal is smaller than a preset third threshold, reallocating 1 PUCCH resource to the terminal.

The embodiment of the application provides a communication device, the device includes:

the receiving unit is used for acquiring the utilization rate of a Physical Uplink Control Channel (PUCCH) resource for carrying Channel State Information (CSI), wherein the utilization rate is the proportion of the currently allocated PUCCH resource for carrying the CSI to the total number of PUCCH resources for carrying the CSI in the system;

and the processing unit is used for allocating PUCCH resources for carrying CSI to the terminal according to the utilization rate.

In a possible implementation manner, the processing unit is configured to allocate N PUCCH resources to the terminal if the utilization rate is smaller than a preset first threshold a; if the utilization rate is greater than or equal to the preset first threshold A and less than a preset second threshold B, allocating M PUCCH resources for the terminal; wherein N, M is a positive integer, and N is greater than M.

In a possible implementation, N is 4, and the processing unit is configured to: when the utilization rate is less than the preset first threshold a, the 4 PUCCH resources allocated to the terminal include: 1 PUCCH resource used for reporting CSI containing almost blank subframe ABS and sent at antenna P0 port; 1 PUCCH resource used for reporting CSI which contains non-ABS and is sent at an antenna port P0; 1 PUCCH resource used for reporting CSI which contains ABS and is sent at an antenna port P1; and 1 PUCCH resource for reporting CSI, which includes non-ABS and is transmitted at antenna P1 port.

In one possible embodiment, M is 2; the processing unit is configured to:

In one possible embodiment, the processing unit is further configured to:

The embodiment of the application provides a communication method and device, and PUCCH resource allocation for reporting CSI is carried out according to the utilization condition of the PUCCH resource for reporting CSI. The terminal can report the CSI for the base station in time while saving PUCCH resources for reporting the CSI, and reflect the quality of the downlink channel of the terminal, so that the problem that the quality information of the downlink channel of the terminal cannot be accurately obtained due to the fact that the PUCCH resources for carrying the CSI are in shortage is solved.

Drawings

Fig. 1 is a schematic architecture diagram of a communication method according to an embodiment of the present application;

fig. 2 is a schematic view of a subframe structure according to an embodiment of the present disclosure;

fig. 3 is a flowchart of a method of communication according to an embodiment of the present application;

fig. 4 is a flowchart of recovering PUCCH resources according to an embodiment of the present application;

fig. 5 is a flowchart of recovering PUCCH resources according to an embodiment of the present application;

fig. 6A is a schematic diagram of a method of communication according to an embodiment of the present application;

fig. 6B is a schematic diagram of a communication method according to an embodiment of the present application;

fig. 7 is a schematic diagram of a communication device according to an embodiment of the present application.

Detailed Description

For convenience of description, in the embodiment of the present application, a terminal located in a central area of a base station is described as a central terminal, and a terminal located in an edge area of the base station is described as an edge terminal.

Fig. 1 is a schematic structural diagram of a communication method in the embodiment of the present application. The method comprises the following steps: a macro base station 101, a micro base station 102, a center terminal 103 of the micro base station 102 and an edge terminal 104 of the micro base station 102. The macro base station 101 and the micro base station 102 adopt an intra-frequency networking mode, the coverage area of the macro base station 101 is wide, the coverage area of the micro base station 102 is relatively small, and the macro base station 101 and the micro base station are located at the coverage edge of the macro base station 101 or at positions which cannot be covered.

For the cell edge terminal 103 of the micro base station 102, the downlink co-channel interference of the macro base station 101 may be experienced. In order to solve the problem of co-channel interference between macro and micro base stations, the macro base station 101 adopts an ABS technology, so that the macro base station 101 and the micro base station 102 maintain orthogonality in a time domain. As shown in fig. 2, for the subframe structure diagram provided in the embodiment of the present application, in the ABS, the macro base station 101 does not send downlink data, so that the transmission power of the macro base station 101 may be set at a lower level, and the micro base station 102 schedules the edge terminal 103 at the ABS, so that the interference from the macro base station 101 is smaller, and at this time, the micro base station 102 is more concerned about channel information of the edge terminal 103 at the ABS. For the cell center terminal 104 of the micro base station 102, since the downlink co-channel interference of the macro base station 101 is small, the center terminal 104 may be scheduled on a non-ABS, and at this time, the micro base station 104 is concerned about channel information of the center terminal 104 on the non-ABS.

Therefore, the interference level experienced by the terminals in the micro base station 102 varies greatly between the ABS and the non-ABS, and it is difficult to accurately reflect the interference levels of different subframe types without distinguishing between the ABS and the non-ABS. In addition, because the positions of the terminals are in different states, and the scheduling priorities of the micro base station 102 for the channel information of different subframe types on the terminals are different, the priorities of the micro base station 102 for acquiring the channel information of different subframe types of the terminals are correspondingly changed along with the positions of the terminals. In consideration of the mobility of the terminal, the micro base station 102 needs to acquire channel information on the ABS and the non-ABS in time.

According to the method and the device, the PUCCH resources bearing the CSI are allocated according to the utilization rate of the PUCCH resources bearing the CSI. When the PUCCH resource carrying CSI is in shortage, the micro base station allocates the PUCCH resource carrying CSI as needed according to the current location of the terminal, so as to obtain the required CSI of the terminal, and while saving the PUCCH resource carrying CSI, the micro base station 102 can still obtain the downlink channel quality information of the terminal.

When the PUCCH resources for carrying CSI are abundant, the micro base station 102 configures 2 PUCCH resources for the terminal, where the 2 PUCCH resources include PUCCH resources for carrying CSI of ABS and non-ABS, in consideration of mobility of the terminal. When the terminal moves from the central area to the edge area of the micro base station 102, or from the edge area to the central area, the change situation of the downlink channel quality of the terminal can be quickly obtained by measuring the CSI of the ABS and the CSI of the non-ABS, and the scheduling and link adaptation module can also react quickly. In conclusion, in an application scenario with ABS configuration, the method provided by the present application implements reasonable allocation of PUCCH resources carrying CSI, and ensures accuracy of the micro base station in measuring downlink channel quality for the terminal, thereby improving overall performance of the system.

Fig. 3 is a flowchart of a communication method according to an embodiment of the present application. As shown in fig. 3, a method for communication according to an embodiment of the present application includes:

step 301: and the base station acquires the utilization rate of PUCCH resources for carrying CSI.

Step 302: and the base station allocates PUCCH resources for carrying CSI to the terminal according to the utilization rate.

In a specific embodiment of step 301, the utilization ratio is a ratio of PUCCH resources currently allocated for carrying CSI to a total number of PUCCH resources in the system for carrying CSI. And a base station counts the utilization rate of the PUCCH resources in real time, the base station can be a micro base station, the PUCCH resources are used for carrying CSI of a terminal, the CSI can comprise CQI, PMI, PTI and RI, and the format of the PUCCH resources is PUCCH format2/2a/2 b. The utilization rate of the PUCCH resources may be determined by the following formula:

wherein csi _ PUCCH Usage is the utilization rate, csi _ PUCCH allocated is the number of PUCCH resources allocated by the base station, and csi _ PUCCH num is the total number of PUCCH resources of the base station.

In the specific embodiment of step 302, if the PUCCH resource needs to be allocated to the terminal, the base station allocates the PUCCH resource to the terminal according to a relationship between the utilization rate and a preset first threshold a or/and a preset second threshold B. The specific preset first threshold a and the preset second threshold B may be set according to practical applications, and are not limited herein.

A possible implementation manner is that the base station allocates, to the terminal according to the utilization rate, a PUCCH resource for carrying CSI, and includes:

wherein N, M is a positive integer, and N is greater than M.

In a possible implementation manner, N is 4, and if the utilization rate is smaller than a preset first threshold a, 4 PUCCH resources are allocated to the terminal.

In one possible implementation, the 4 PUCCH resources include: 1 PUCCH resource used for transmitting at an antenna port p0 and carrying CSI of an Almost Blank Subframe (ABS) of the terminal; 1 PUCCH resource used for transmitting at an antenna port p0 and carrying non-ABS CSI of the terminal; 1 PUCCH resource for transmitting at antenna port p1 and carrying CSI of ABS of the terminal; 1 PUCCH resource for transmitting at antenna port p1 and carrying non-ABS CSI for the terminal. For example, the preset first threshold a may be 80%.

For example, the base station may allocate 4 PUCCH resources to the terminal through Radio Resource control (RRCl) reconfiguration signaling. For example, the base station may allocate a PUCCH resource time domain for carrying CQI and PMI measured periodically to the illustrated terminal through CQI-PMI-ConfigIndex and CQI-PMI-ConfigIndex2-r10 in RRC reconfiguration; the base station can allocate the PUCCH resources for transmitting at an antenna port p0 to the terminal through cqi-PUCCH-ResourceIndex, and the base station can allocate the PUCCH resources for transmitting at an antenna port p1 to the terminal through cqi-PUCCH-ResourceIndex 1.

For example, the base station may determine that the location of the terminal is located in an edge area of the base station through a first measurement event and a second measurement event. The first measurement event is that if the signal quality of a serving cell where the terminal measures the base station is smaller than a fourth preset threshold value within a certain time, the terminal reports the first measurement event to the base station; and the second measurement event is that if the signal quality of the adjacent cell of the base station measured by the terminal is higher than that of the serving cell of the base station, and the relative value of the signal quality and the adjacent cell is greater than a fifth preset threshold value, the second measurement event is reported to the base station, and after receiving the first measurement event and the second measurement event, the base station can determine that the position of the terminal is located in the edge area of the base station.

For another example, if the base station does not receive the first measurement event or the second measurement event, it determines that the location of the terminal is located in the center area of the base station.

When the terminal moves from the central area of the base station to the edge area of the base station or from the edge area of the base station to the central area of the base station, the base station can obtain the change condition of the quality of the downlink channel of the terminal by obtaining the CSI of the ABS and the CSI of the non-ABS of the terminal, so that the scheduling and link self-adapting module can make corresponding adjustment quickly, and the communication quality is improved.

In one possible implementation, M is 2; that is, if the utilization rate is greater than or equal to a preset first threshold a and less than a preset second threshold B, 2 PUCCH resources are allocated to the user.

In one possible implementation, the 2 PUCCH resources include: a PUCCH resource used for transmitting at an antenna port p0 and carrying CSI of ABS of the terminal; a PUCCH resource used for transmitting at an antenna port p0 and carrying CSI of a non-ABS of the terminal; or, the 2 PUCCH resources include: a PUCCH resource used for transmitting at an antenna port p1 and carrying CSI of ABS of the terminal; one PUCCH resource for transmitting at antenna port p1 and carrying CSI for the terminal that is not ABS.

In order to determine the uplink channel quality of the allocated PUCCH resource, with reference to a possible implementation manner of the first aspect or a possible implementation manner of the second aspect, after allocating the PUCCH resource to the terminal, the method further includes:

and starting a timer for the terminal, and acquiring the position of the terminal and the measured SINR of the PUCCH resource after the timer exceeds a preset duration.

In one possible implementation, the 2 PUCCH resources include:

if it is determined that the terminal is located in the central region of the base station, the 2 PUCCH resources include: 1 PUCCH resource for transmitting at antenna port p0 and carrying CSI of ABS of the terminal; 1 PUCCH resource for transmitting at antenna port p1 and carrying CSI of ABS of the terminal;

if it is determined that the terminal is located in the edge region of the base station, the 2 PUCCH resources include: 1 PUCCH resource used for transmitting at an antenna port p0 and carrying non-ABS CSI of the terminal; 1 PUCCH resource for transmitting at antenna port p1 and carrying non-ABS CSI for the terminal.

If the terminal is located in the edge area of the base station, the base station has a high probability of scheduling the terminal on the ABS, and the base station is more concerned about channel information of the terminal on the ABS; therefore, the PUCCH resource carrying CSI of non-ABS by the edge terminal is recovered, and only the PUCCH resource carrying CSI of ABS is reserved for the terminal. If the base station determines that the terminal is the center terminal, the base station has a high probability of scheduling the terminal on the non-ABS, and the base station is more concerned about channel information of the terminal on the non-ABS. And only allocating PUCCH resources carrying CSI of non-ABS for the terminal. And the CSI reported by the terminal can still reflect the channel quality of the terminal while the PUCCH resources are saved.

In a possible implementation manner, a value of the preset first threshold a is smaller than a value of the preset second threshold B, for example, the value of the preset first threshold a may be 80%, and the value of the preset second threshold B may be 90%.

In one possible implementation, the method further includes:

if the utilization rate is greater than or equal to a preset second threshold value B, the PUCCH resource congestion is considered to occur, the PUCCH resource arrangement process is executed, and N distributed PUCCH resources are recycled; the N satisfies the condition of alpha x (B-A) x CSI _ pucchNum, wherein the CSI _ pucchNum is the total number of PUCCH resources for reporting CSI configured by the base station, alpha is an adjustment factor, B is a preset second threshold B, A is a preset first threshold A, and B is greater than A. For example, the value range of α may be (0, 2).

In a possible implementation manner, the base station may recycle the N PUCCH resources according to the priority of the following terminals:

the first priority: the terminal occupies 4 PUCCH resources for reporting the CSI;

the second priority is: the terminal occupies 2 PUCCH resources for reporting the CSI;

third priority: the terminal with the timer exceeding the preset time length;

the fourth priority: and the measured SINR of the PUCCH resources is larger than a preset third threshold value.

In the fourth priority, a possible implementation manner is that the maximum value in the measured SINRs of the PUCCH resources is greater than a preset third threshold; in another possible implementation manner, the minimum value in the measured SINRs of the PUCCH resources is greater than a preset third threshold.

Fig. 4 is a flowchart of recovering PUCCH resources according to an embodiment of the present application. As shown in fig. 4, with reference to the first possible implementation manner of the third aspect, a second possible implementation manner is as follows:

step 401, determining the recoverable PUCCH resources in the terminal satisfying the first priority. For example, the PUCCH resources may be determined according to the following:

if the terminal with the first priority is the center terminal of the base station and the SINR of the PUCCH resource for measuring the non-ABS CSI allocated to the terminal is greater than or equal to the preset third threshold, the terminal may recover 3 PUCCH resources;

if the terminal with the first priority is the edge terminal of the base station and the SINR of the PUCCH resource for measuring the CSI of the ABS allocated to the terminal is greater than or equal to the preset third threshold, the terminal may recover 3 PUCCH resources;

if the terminal with the first priority is the center terminal of the base station and the SINR of the PUCCH resource for measuring the non-ABS CSI allocated to the terminal is less than the preset third threshold, the terminal may recover 2 PUCCH resources;

if the terminal with the first priority is the edge terminal of the base station and the SINR of the PUCCH resource for measuring the CSI of the ABS allocated to the terminal is less than the preset third threshold, the terminal may recover 2 PUCCH resources;

step 402, if the number M of the PUCCH resources that can be recovered by the terminal satisfying the first priority is greater than or equal to N, recovering N PUCCH resources in the terminal satisfying the first priority according to the third priority and the fourth priority.

In addition, in the embodiment of the present application, fig. 5 is a flowchart of recovering PUCCH resources according to the embodiment of the present application. As shown in fig. 5, with reference to the first possible implementation manner of the third aspect, a third possible implementation manner is as follows:

step 501, determining the recoverable PUCCH resources in the terminal meeting the second priority. For example, the PUCCH resources that can be recovered may be determined according to the following:

if the terminal with the second priority is the center terminal of the base station and the SINR of the PUCCH resource for measuring the non-ABS CSI allocated to the terminal is greater than or equal to a preset third threshold, the terminal may recover 1 PUCCH resource;

if the terminal with the second priority is the edge terminal of the base station and the SINR of the PUCCH resource for measuring the CSI of the ABS allocated to the terminal is greater than or equal to a preset third threshold, the terminal may recover 1 PUCCH resource;

step 502, if the terminal meeting the first priority can recover M PUCCH resources, and M is less than N, determining that a second priority can recover the number L of PUCCH resources; and if L is greater than or equal to (N-M), recovering (N-M) PUCCH resources in the terminal of the second priority according to a third priority and a fourth priority.

A possible implementation manner, in which the base station allocates the PUCCH resource to the terminal according to the utilization rate, includes:

and if the utilization rate is greater than or equal to a preset second threshold value B, allocating 1 PUCCH resource to the terminal.

One possible implementation includes:

if the terminal is the central terminal of the base station, 1 PUCCH resource is allocated; the 1 allocated PUCCH resource is a PUCCH resource which carries CSI of non-ABS and is transmitted at an antenna p0 or p1 port;

if the terminal is the edge terminal of the base station, 1 PUCCH resource is allocated; the 1 allocated PUCCH resource is a PUCCH resource which carries CSI of ABS and is transmitted at an antenna p0 or p1 port.

For example, the terminal may be allocated 1 PUCCH resource carrying measurement CSI of ABS or non-ABS through RRC reconfiguration signaling.

In a possible implementation manner, if SINR of 1 PUCCH resources allocated to the terminal is smaller than a preset third threshold, 1 PUCCH resource is reallocated to the terminal.

If the SINR of the PUCCH resources allocated to the central terminal is smaller than a preset third threshold, allocating 1 PUCCH resource to the terminal, where the allocated PUCCH resource for the terminal includes: PUCCH resources transmitted at antenna ports p0 and p1 and used to carry CSI of non-ABS;

for example, if 1 PUCCH resource allocated to the center terminal is a PUCCH resource carrying CSI of non-ABS sent at an antenna p0 port, and the SINR of the PUCCH resource is smaller than a preset third threshold, then a PUCCH resource carrying CSI of non-ABS sent at an antenna p1 port is allocated to the center terminal.

And if the 1 PUCCH resource allocated to the center terminal is a PUCCH resource carrying non-ABS CSI sent at an antenna p1 port, and the SINR of the PUCCH resource is less than a preset third threshold, allocating a PUCCH resource carrying non-ABS CSI sent at an antenna p0 port to the center terminal.

If the SINR for allocating the PUCCH resources to the edge terminal is smaller than a preset third threshold, allocating 1 PUCCH resource to the terminal, where the allocated PUCCH resource for the terminal includes: PUCCH resources transmitted at antenna ports p0 and p1 and used to carry CSI for ABS.

For example, if 1 PUCCH resource allocated to the center terminal is a PUCCH resource carrying CSI of ABS sent at an antenna p0 port, and the SINR of the PUCCH resource is smaller than a preset third threshold, then one PUCCH resource carrying CSI of ABS sent at an antenna p1 port is allocated to the center terminal.

And if the 1 PUCCH resource allocated to the center terminal is a PUCCH resource carrying CSI of ABS sent at an antenna p1 port, and the SINR of the PUCCH resource is less than a preset third threshold, allocating a PUCCH resource carrying CSI of ABS sent at an antenna p0 port to the center terminal.

In summary, if the terminal is located in the edge area of the base station, the base station has a high probability of scheduling the terminal on the ABS, and the base station is more concerned about the channel information of the terminal on the ABS; therefore, the PUCCH resource carrying CSI of non-ABS by the edge terminal is recovered, and only the PUCCH resource carrying CSI of ABS is reserved for the terminal. If the base station determines that the terminal is the center terminal, the base station has a high probability of scheduling the terminal on the non-ABS, and the base station is more concerned about channel information of the terminal on the non-ABS. And recovering the PUCCH resource of the center terminal bearing the CSI of the ABS, and reserving the PUCCH resource of the terminal bearing the CSI of the non-ABS. And the CSI reported by the terminal can still reflect the channel quality of the terminal while the PUCCH resources are saved.

In addition, if the utilization rate is greater than a preset second threshold B, determining whether to allocate the PUCCH resources transmitted at antenna ports p0 and/or p1 according to the measured SINR value of the PUCCH resources. For example, if the measured SINR of the PUCCH resource is smaller than the preset third threshold, the PUCCH resources carrying CSI at antenna ports p0 and p1 are allocated to the terminal. And if the measured SINR of the PUCCH resources is greater than or equal to the preset third threshold, allocating the PUCCH resources carrying CSI at an antenna port p0 or p1 to the terminal. The uplink channel quality of the PUCCH resources carrying the CSI is ensured while the PUCCH resources carrying the CSI are saved.

The terminal is allocated with the PUCCH resource bearing the CSI by determining the current position of the terminal and the measurement SINR of the PUCCH resource bearing the CSI, so that the reasonable allocation of the PUCCH resource bearing the CSI is realized while the PUCCH resource bearing the CSI is saved, all terminals of the base station can report necessary CSI information, the quality of a downlink channel of the terminal can be well reflected, and the overall performance of the system is improved.

The following is a specific embodiment, as shown in fig. 6A, which is a schematic diagram of a communication method in the embodiment of the present application. The x axis represents identities of CSI (channel state information) of ABS and non-ABS carried by the allocated PUCCH resources, and the y axis represents an antenna port for transmitting the PUCCH resources. In the following, it is assumed that the value of the preset first threshold a is 80% and the value of the preset second threshold B is 90%.

If the PUCCH resource utilization rate is less than 80%, allocating 4 PUCCH resources carrying CSI to terminal 601, which may be respectively represented as: PUCCH resources (non-ABS 1, p0), PUCCH resources (non-ABS 1, p1), PUCCH resources (ABS1, p0), PUCCH resources (ABS1, p 1).

If the PUCCH resource utilization rate is greater than or equal to 80% and less than 90%, 2 PUCCH resources are allocated to terminal 602, for example, PUCCH resources (non-ABS 2, p0), (ABS2, p0) allocated to terminal 2, PUCCH resources (non-ABS 2, p1) allocated to terminal 3, and (ABS2, p1) PUCCH resources.

If the PUCCH resource utilization rate is greater than 90%, executing the PUCCH resource recovery process, and assuming that 5 PUCCH resources are recovered, as shown in fig. 6B, this is a schematic diagram of a communication method in the embodiment of the present application.

First, the PUCCH resource in terminal 601 is recovered, and assuming that terminal 601 is a cell center terminal of the base station and the SINR of the PUCCH resource (non-ABS 1, p0) is greater than a preset third threshold, the PUCCH resource (non-ABS 1, p1), the PUCCH resource (ABS1, p0), and the PUCCH resource (ABS1, p1) are recovered, and only the PUCCH resource (non-ABS 1, p0) is reserved;

then, recovering the terminal 602 and the terminal 603, and assuming that the terminal 602 is a cell center terminal of the base station and the SINR of the PUCCH resource (non-ABS 2, p0) is greater than a preset third threshold, recovering the terminal (ABS2, p0) and allocating only the PUCCH resource (non-ABS 2, p 0); assuming that terminal 603 is a cell edge user and the PUCCH resource SINR of the PUCCH resource (non-ABS 2, p1) is greater than the preset third threshold, only the PUCCH resource (ABS2, p1) is recovered from the PUCCH resource (non-ABS 2, p 1).

If the PUCCH resource utilization rate is greater than 90%, allocating the PUCCH resource to the terminal 604:

if terminal 604 is the center terminal, the PUCCH resource (non-ABS 3, p0) is allocated to terminal 604, a timer is set for terminal 604, and if the timer exceeds a predetermined duration, the SINR of the PUCCH resource (non-ABS 3, p0) is measured. And if the SINR is smaller than the preset third threshold, reallocating (non-ABS 3, p1) PUCCH resources for the terminal 604.

a receiving unit 701, configured to obtain a utilization rate of a PUCCH resource of a physical uplink control channel for carrying CSI, where the utilization rate is a ratio of a currently allocated PUCCH resource for carrying CSI to a total number of PUCCH resources for carrying CSI in a system;

a processing unit 702, configured to allocate, according to the utilization ratio, PUCCH resources for carrying CSI for the terminal.

In a possible implementation manner, the processing unit 702 is configured to allocate N PUCCH resources to the terminal if the utilization rate is smaller than a preset first threshold a; if the utilization rate is greater than or equal to the preset first threshold A and less than a preset second threshold B, allocating M PUCCH resources for the terminal; wherein N, M is a positive integer, and N is greater than M.

In a possible implementation manner, where N is 4, the processing unit 702 is configured to: when the utilization rate is less than the preset first threshold a, the 4 PUCCH resources allocated to the terminal include: 1 PUCCH resource used for reporting CSI containing almost blank subframe ABS and sent at antenna P0 port; 1 PUCCH resource used for reporting CSI which contains non-ABS and is sent at an antenna port P0; 1 PUCCH resource used for reporting CSI which contains ABS and is sent at an antenna port P1; and 1 PUCCH resource for reporting CSI, which includes non-ABS and is transmitted at antenna P1 port.

In one possible embodiment, M is 2; the processing unit 702 is configured to:

In one possible implementation, the processing unit 702 is further configured to:

The embodiment of the application provides a computer-readable storage medium, which comprises computer-readable instructions, and when the computer-readable instructions are read and executed by a computer, the computer is enabled to execute the method in any one of the above-mentioned items.

The present application provides a computer program product, which includes computer readable instructions, when the computer reads and executes the computer readable instructions, the computer executes the method described in any one of the above.

According to the PUCCH resource utilization condition, CSI is allocated according to needs. And according to the utilization condition of the PUCCH resources for reporting the CSI, carrying out PUCCH resource allocation for reporting the CSI as required. Considering that the terminal moves at the junction of the center and the edge of the cell, the method allows the terminal to measure the ABS subframes and the non-ABS subframes simultaneously within a certain time, when the terminal moves from the center to the edge or from the edge to the center, the change condition of the downlink channel quality can be quickly obtained, and the scheduling and link self-adapting module can also react quickly. The CSI information of the terminal can be reported to the base station in time while the PUCCH resource for reporting the CSI is saved, and the channel quality is reflected, so that the problem that the channel quality information reported by the terminal cannot be accurately obtained due to the fact that the PUCCH resource for reporting the CSI is in shortage is solved. Under the scene of ABS subframe configuration, the method provided by the application improves the utilization rate of PUCCH resources for reporting CSI, and simultaneously ensures the accuracy of terminal measurement.

It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation. The functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

It should also be understood that reference herein to first, second, third, fourth, and various numerical designations is made merely for convenience in description and is not intended to limit the scope of embodiments of the invention.

It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of the processes should be determined by their functions and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.

Those of ordinary skill in the art will appreciate that the various illustrative logical blocks and steps (step) described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of a unit is merely a logical division, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The procedures or functions according to the embodiments of the invention are brought about in whole or in part when the computer program instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wirelessly (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

The embodiment of the present invention provides a computer storage medium, where computer-executable instructions are stored in the computer storage medium, and when the computer-executable instructions are called by a computer, the computer may refer to the above communication method for execution, and details are not described here again.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A method of communication, the method comprising:

the base station allocates PUCCH resources for carrying CSI to the terminal according to the utilization rate; the PUCCH resources allocated to the terminal include at least 1 of: 1 PUCCH resource used for reporting CSI which contains almost blank subframe ABS and is sent at an antenna port P0; 1 PUCCH resource used for reporting CSI which contains non-ABS and is sent at an antenna port P0; 1 PUCCH resource used for reporting CSI which contains ABS and is sent at an antenna port P1; and 1 PUCCH resource used for reporting CSI which comprises non-ABS and is transmitted at an antenna port P1.

2. The method of claim 1, wherein the base station allocates a PUCCH resource for carrying CSI to the terminal according to the utilization rate, comprising:

wherein N, M is a positive integer, and N is greater than M.

3. The method of claim 2, wherein N is 4, and when the utilization rate is less than the preset first threshold a, the 4 PUCCH resources allocated to the terminal include: 1 PUCCH resource used for reporting CSI which contains almost blank subframe ABS and is sent at an antenna port P0; 1 PUCCH resource used for reporting CSI which contains non-ABS and is sent at an antenna port P0; 1 PUCCH resource used for reporting CSI which contains ABS and is sent at an antenna port P1; and 1 PUCCH resource used for reporting CSI which comprises non-ABS and is transmitted at an antenna port P1.

4. The method of claim 2 or 3, wherein M is 2;

5. The method of claim 4, wherein the method further comprises:

6. The method of claim 2, wherein the method further comprises:

7. The method of claim 2, wherein the method further comprises:

8. The method of claim 7, wherein the method further comprises:

9. An apparatus for communication, the apparatus comprising:

the processing unit is used for allocating PUCCH resources for carrying CSI to the terminal according to the utilization rate; the PUCCH resources allocated to the terminal include at least 2 of: 1 PUCCH resource used for reporting CSI which contains almost blank subframe ABS and is sent at an antenna port P0; 1 PUCCH resource used for reporting CSI which contains non-ABS and is sent at an antenna port P0; 1 PUCCH resource used for reporting CSI which contains ABS and is sent at an antenna port P1; and 1 PUCCH resource used for reporting CSI which comprises non-ABS and is transmitted at an antenna port P1.

10. The apparatus of claim 9, wherein the processing unit is configured to allocate N PUCCH resources for the terminal if the utilization rate is smaller than a preset first threshold a; if the utilization rate is greater than or equal to the preset first threshold A and less than a preset second threshold B, allocating M PUCCH resources for the terminal; wherein N, M is a positive integer, and N is greater than M.

11. The apparatus of claim 10, wherein N is 4, and when the utilization rate is less than the preset first threshold a, the 4 PUCCH resources allocated for the terminal include: 1 PUCCH resource used for reporting CSI which contains almost blank subframe ABS and is sent at an antenna port P0; 1 PUCCH resource used for reporting CSI which contains non-ABS and is sent at an antenna port P0; 1 PUCCH resource used for reporting CSI which contains ABS and is sent at an antenna port P1; and 1 PUCCH resource for reporting CSI, which includes non-ABS and is transmitted at antenna P1 port.

12. The apparatus of claim 10 or 11, wherein M is 2;

13. The apparatus as recited in claim 12, said processing unit to further:

determining whether the location of the terminal is located in a center region or an edge region of the apparatus.

14. The apparatus as recited in claim 10, said processing unit to further:

if the utilization rate is greater than or equal to the preset second threshold value B, recovering L allocated PUCCH resources; the L is equal to α × (B-a) × CSI _ pucchNum, where CSI _ pucchNum is a total number of PUCCH resources configured by the apparatus for carrying CSI, α is an adjustment factor, B is the preset second threshold B, a is the preset first threshold a, and B > a.

15. The apparatus as recited in claim 10, said processing unit to further:

if the position of the terminal is located in the central region of the device, allocating 1 PUCCH resource for the terminal as a PUCCH resource for uploading CSI, which includes non-ABS and is transmitted at antenna port P0 or port P1;

if the position of the terminal is determined to be located in the edge region of the apparatus, 1 PUCCH resource allocated to the terminal is a PUCCH resource for uploading CSI, which includes ABS and is transmitted at antenna port P0 or port P1.

16. The apparatus as recited in claim 11, said processing unit to further: