WO2019047647A1

WO2019047647A1 - Method and apparatus for resource allocation and channel state information reporting

Info

Publication number: WO2019047647A1
Application number: PCT/CN2018/098685
Authority: WO
Inventors: 李辉; 拉盖施; 高秋彬; 陈润华; 黄秋萍; 缪德山; 苏昕; 王蒙军
Original assignee: 电信科学技术研究院有限公司
Priority date: 2017-09-08
Filing date: 2018-08-03
Publication date: 2019-03-14
Also published as: CN109474320A; CN109474320B

Abstract

Disclosed in the present invention are a method and an apparatus for resource allocation and channel state information reporting, used to ensure effective use of resources and to ensure CSI feedback accuracy. One type of resource allocation provided in the present application comprises: determining a rank indicator set; according to rank indicator values in the rank indicator set, allocating an uplink channel resource to a terminal.

Description

Resource allocation, channel state information reporting method and device

This application claims the priority of the Chinese Patent Application filed on Sep. 8, 2017, the Chinese Patent Application No. PCT Application No. Combined in this application.

Technical field

The present application relates to the field of communications technologies, and in particular, to a resource allocation, channel state information reporting method, and apparatus.

Background technique

The terminal calculates channel state information (CSI) through downlink channel measurement. The CSI includes a Channel Quality Indication (CQI), a Rank Indication (RI), and a Precoding Matrix Indicator (PMI), and may also include a channel state information reference signal (also referred to as a probe). The Channel State Information Reference Signal (CSI-RS) resource indicates CRI information. In order for the terminal to report the CSI to the base station for base station scheduling, the base station needs to allocate the uplink channel resource for the terminal to report the CSI. For a certain codebook configuration of the base station, the CSI load reported by the terminal dynamically changes with the RI. In the Long Term Evolution (LTE) system, for the Type A codebook or the advanced Advanced CSI codebook, the difference in CSI load caused by the difference in RI is not large, so the maximum possible CSI feedback overhead can be used. Allocate the required upstream channel resources.

Type I codebooks and Type II codebooks are defined in the New Radio Access Technology (NR) system. Table 1 and Table 2 give the feedback information of the Type II codebook and the PMI feedback overhead at 32 ports. Assuming that the base station is configured with the number of beam combining L=3 of this codebook, the terminal may feed back RI=1 (using rank rank 1 codebook) or RI=2 (using rank rank 2 codebook) when performing CSI calculation. If the terminal determines RI=1, the total PMI is 192 bits, and if the terminal determines RI=2, the total PMI is 370 bits. This shows that the dynamic range of its PMI varies greatly, and the overhead of different RI feedbacks differs by 178 bits. Since the base station cannot know the load size of the CSI before obtaining the RI information, the base station can only allocate the uplink channel resource to the terminal according to a certain possible load size. The allocation of this resource requires both the accuracy of the feedback and the reasonable utilization of the uplink resources.

Table 1: PMI feedback overhead of the 32-port type II codebook (broadband part)

Table 2: PMI feedback overhead of the 32-port type II codebook (sub-band part)

In summary, for the codebook defined by the NR system, the dynamic range of the load overhead is large. If the uplink information resource is allocated according to the maximum cost, the resource may be wasted. If the allocated uplink resources are small, the accuracy of the feedback cannot be guaranteed.

Summary of the invention

The embodiment of the present application provides a resource allocation and channel state information reporting method and device, which are used to ensure efficient use of resources and ensure feedback accuracy of CSI.

On the network side, a resource allocation method provided by an embodiment of the present application includes:

Determining a rank indication set;

And allocating an uplink channel resource to the terminal according to the value of the rank indication in the rank indication set.

The resource allocation method provided by the embodiment of the present application allocates an uplink channel resource to the terminal according to the value of the rank indication in the rank indication set, so as to ensure effective utilization of the resource and ensure the feedback precision of the CSI.

Optionally, the rank indication set is a second rank indication set;

The determining the rank indication set specifically includes:

Determining a first rank indication set;

Determining, according to the first rank indication set, a second rank indication set, wherein the second rank indication set is a subset of the first rank indication set.

Optionally, determining, according to the first rank indication set, the second rank indication set, specifically:

And selecting, according to the service condition, a rank indication from the first rank indication set, to generate a second rank indication set;

Or, based on the value of the virtual rank indication fed back by the terminal, selecting a rank indication from the first rank indication set, and generating a second rank indication set.

Optionally, the determining the first rank indication set specifically includes:

Determining, according to one of the capability information, the deployment scenario, and the service condition of the terminal, a first rank indication set;

Alternatively, the first rank indication set is determined in a manner agreed in advance with the terminal.

Optionally, the value of the rank indication in the second rank indication set is a discontinuous value; and/or,

The value of the rank indication in the second rank indication set is less than or equal to the value of the maximum rank indication, and the value of the maximum rank indication is a value according to the virtual rank feedback fed back by the terminal, from the first rank. Determining the selection in the set, or selecting the determined from the first rank indication set based on the service condition.

Optionally, it also includes:

Notifying the terminal of related information of the second rank indication set.

Optionally, the information about the second rank indication set is notified to the terminal, specifically:

The related information of the second rank indication set is notified to the terminal by sending physical layer signaling, high layer signaling, or signaling triggered by the aperiodic channel state information CSI.

Optionally, the related information of the second rank indication set includes: a value of all rank indications in the second rank indication set, or a value of a maximum rank indication, where the value of the maximum rank indication is Selecting the determined from the first rank indication set according to the value of the virtual rank indication fed back by the terminal, or selecting the determined second rank indication set from the first rank indication set based on a service condition. The value of the rank indication in the less than or equal to the value indicated by the maximum rank.

Optionally, it also includes:

Receiving a value of the virtual rank indication fed back by the terminal, and determining a value of the actual rank indication according to the value of the virtual rank indication; or receiving a value of the virtual rank indication and a value of the actual rank indication fed back by the terminal;

The CQI and the PMI fed back by the terminal are received according to the value indicated by the actual rank.

Optionally, the value of the actual rank indicator is a value that is not greater than a value of the rank indicating that the value of the virtual rank indication is the largest in the rank indication set; or

The value of the actual rank indication is a value of a rank indication determined from the rank indication set according to a channel condition and/or an interference condition of a base station to a terminal.

Correspondingly, on the terminal side, a channel state information reporting method provided by the embodiment of the present application includes:

Determining a rank indication set;

Determining a virtual rank indication and determining an actual rank indication from the rank indication set;

Determining channel state information according to the value of the actual rank indication;

And over the uplink channel resource, feeding back the virtual rank indication, and the channel state information; or feeding back the virtual rank indication, the actual rank indication, and the channel state information.

Optionally, the rank indication set is a second rank indication set;

The method also includes determining a first rank indication set;

The virtual rank indication is determined from the first rank indication set.

Optionally,

The value of the actual rank indication is a value of the rank indication that is not greater than the value of the virtual rank indication in the second rank indication set; or

The value of the actual rank indication is a value of a rank indication determined from the second rank indication set according to a channel condition and/or an interference condition of a base station to a terminal.

On the network side, a resource allocation apparatus provided in this embodiment includes:

a memory for storing program instructions;

a processor, configured to invoke a program instruction stored in the memory, and execute according to the obtained program:

Determining a rank indication set;

Optionally, the rank indication set is a second rank indication set;

The determining the rank indication set specifically includes:

Determining a first rank indication set;

Optionally, the transceiver further includes: the processor further configured to: notify, by the transceiver, related information of the second rank indication set to the terminal.

Optionally, the transceiver is further included, and the processor is further configured to:

Receiving, by the transceiver, a value of the virtual rank indication fed back by the terminal, and determining a value of the actual rank indication according to the value of the virtual rank indication; or receiving a value of the virtual rank indication and a value of the actual rank indication fed back by the terminal;

The CQI and PMI fed back by the terminal are received by the transceiver according to the value indicated by the actual rank.

Correspondingly, on the terminal side, a channel state information reporting device provided by the embodiment of the present application includes:

a memory for storing program instructions;

Determining a second rank indication set;

Determining an actual rank indication from the second rank indication set;

Optionally, the rank indication set is a second rank indication set;

The processor is further configured to: determine a first rank indication set;

The virtual rank indication is determined from the first rank indication set.

Optionally,

The value of the actual rank indication is a value of the rank indication set that is not greater than the value of the virtual rank indication that is the largest; or

On the network side, the second resource allocation apparatus provided by the embodiment of the present application includes:

a determining unit, configured to determine a rank indication set;

And an allocating unit, configured to allocate an uplink channel resource to the terminal according to the value of the rank indication in the rank indication set.

On the terminal side, the second channel state information reporting device provided by the embodiment of the present application includes:

a first unit, configured to determine a rank indication set;

a second unit, configured to determine a virtual rank indication, and determine an actual rank indication from the rank indication set;

a third unit, configured to determine channel state information according to the value indicated by the actual rank;

a fourth unit, configured to feed back the virtual rank indication and the channel state information on an uplink channel resource; or feed back the virtual rank indication, the actual rank indication, and the channel state information.

A computer storage medium provided by the embodiment of the present application is stored with computer executable instructions, and the computer executable instructions are used to cause the computer to perform any of the methods provided in the embodiments of the present application.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following drawings will be briefly described in the description of the embodiments. It is obvious that the drawings in the following description are only some embodiments of the present application, Those skilled in the art can also obtain other drawings based on these drawings without paying any creative work.

FIG. 1 is a schematic diagram of CSI information (not including CRI) fed back by a terminal according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of another CSI information (not including CRI) fed back by the terminal according to an embodiment of the present disclosure;

FIG. 3 is a schematic flowchart of a resource allocation method according to an embodiment of the present disclosure;

FIG. 4 is a schematic flowchart diagram of a method for reporting channel state information according to an embodiment of the present disclosure;

FIG. 5 is a schematic structural diagram of a resource allocation apparatus according to an embodiment of the present application;

FIG. 6 is a schematic structural diagram of a channel state information reporting apparatus according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of another resource allocation apparatus according to an embodiment of the present disclosure;

FIG. 8 is a schematic structural diagram of another channel state information reporting apparatus according to an embodiment of the present disclosure.

Detailed ways

In a multiple input multiple output (MIMO) system, when the terminal reports CSI information, the load overhead changes dynamically. For dynamically changing load overhead, the base station needs to allocate uplink resources reasonably to achieve efficient use of resources.

The embodiment of the present application provides an uplink channel resource allocation method and a CSI feedback scheme for the problem that the feedback dynamic range of the Type II codebook is large in the NR system.

The specific processing flow is illustrated as follows:

Step 1: The base station determines a set of RI values, which is recorded as a first RI set; the first RI set is a constant set or a semi-statically changed set; the number of elements in the first RI set may be 1 or greater than 1 .

Alt-1: The base station determines the first RI set according to the capability information of the terminal (UE), the deployment scenario, the service condition, and the like, and sends the same to the terminal through physical layer signaling or high layer signaling; the high layer signaling here is similar to the codebook. Codebook Subset Restriction (CSR) signaling. For example, the capability reporting information of the UE indicates that the UE supports a maximum of two stream transmissions, and the first RI set may be {1, 2}; for example, the base station expects the terminal to report the CSI of the single stream to better support multi-user multiple input multiple output ( Multiple User Multiple Input Multiple Output (MU-MIMO) transmission, then the first RI set may be {1}.

Alt-2: The base station and the terminal determine the available first RI set in an agreed manner, for example, the agreement in the protocol, the first RI set is {1, 2, ..., 7, 8}, and no feedback from the terminal is needed.

Step 2: The base station selects one or more RI values from the first RI set to form a second RI set, and the second RI set is a subset of the first RI set. The way the base station selects is as follows:

Based on the selection of service conditions: for example, the first RI set is {1, 2, 3, 4}, and the base station decides to increase the proportion of multi-user scheduling according to the change of the service, for example, the increase of the system load, so that the terminal is expected to feed back the channel of the low rank. Status information, then the second RI set can be selected as {1, 2};

Based on the feedback of the terminal feedback: for example, the first RI set is {1, 2, 3, 4}, and the virtual RI value reported by the terminal (or the most recently reported virtual RI value) is 1, the base station expects the terminal to be If the reported time will be low rank channel information in the future, the base station can determine the second RI set as {1, 2}. The base station uses the virtual RI reported by the terminal as a reference to determine the second RI set; and allocates the uplink channel resource to the terminal according to the RI value in the second RI set, thereby further ensuring effective use of the uplink channel resource, and further The accuracy of the CSI feedback can be further guaranteed.

The RI value in the second RI set may be discontinuous, for example, the first RI set is {1, 2, 3, 4}, and the second RI set may be {1, 3}.

The second RI set may be formed by all RI values in the first RI set that are less than or equal to a certain RI value (maximum RI value), for example, the first RI value set is {1, 2, 3, 4}, and the base station according to The content previously reported by the terminal determines that the maximum RI value is 2, and the second RI set is {1, 2}.

Step 3: The base station notifies the terminal of the information related to the second RI set. Specific methods such as:

Manner 1: The base station notifies the terminal of the RI value in the second RI set, for example, the second RI set is {1, 3}, and the base station sends the two values to the terminal;

Manner 2: The base station notifies the terminal of the maximum RI value, and the RI value of the first set that is less than or equal to the maximum RI value constitutes a second set, for example, the first RI value set is {1, 2, 3, 4}, and the base station according to the terminal previously The content of the feedback determines that the maximum RI value is 2, and the second RI set is {1, 2}. The base station only needs to notify the terminal of the maximum RI value, and the terminal can determine the second RI set. The base station uses the virtual RI reported by the terminal as a reference to determine the second RI set; and allocates the uplink channel resource to the terminal according to the RI value in the second RI set, thereby further ensuring effective use of the uplink channel resource, and further The accuracy of the CSI feedback can be further guaranteed. It should be noted that the virtual RI value described in the embodiment of the present application is relative to the actual RI value, and has no special meaning, but only one RI value in the first RI set, and the RI value and the UE The actual RI values used are distinguished.

For example, the base station may send physical layer signaling or higher layer signaling, or send aperiodic CSI triggered signaling, and may carry the second RI set related information therein. If the amount of resources required for reporting the aperiodic CSI is related to the RI value fed back by the terminal, the resources allocated by the base station for the terminal may be allocated according to the maximum RI value in the second RI set.

Step 4: The terminal receives the signaling sent by the base station, and determines the first RI set and the second RI set.

Step 5: The terminal calculates channel state information:

The terminal selects a virtual RI value from the first RI set according to the channel condition and the interference condition of the base station to the terminal. The specific selection method may be a method for selecting an RI by using a prior art, where the virtual RI value represents a channel supported by the base station to the terminal. The number of data streams that are transmitted in parallel.

Step 6: The terminal determines the actual RI value:

Alt-1: The actual RI value is the largest RI value within the second RI set that is not greater than the virtual RI value.

Alt-2: The actual RI value is an optimal RI value calculated by the terminal from the second RI set according to the channel condition and interference condition of the base station to the terminal.

Step 7: The terminal calculates CQI, PMI, etc. (and possibly CRI) according to the actual RI value and the channel condition and interference condition of the base station to the terminal. For example, for Alt-1, the first RI set is {1, 2}, the second RI set is {1}, and the terminal selects a virtual RI value of 2, then the actual RI is 1. That is, the terminal calculates CQI and PMI according to RI=1, and the PMI calculated by the terminal only corresponds to the precoding matrix of one data stream. The resources of the uplink CSI feedback are allocated according to the largest RI value (1) in the second RI set, so the CQI and PMI calculated by the terminal according to RI=1 can be transmitted in the allocated resources. For Alt-2, the first RI set is {1, 2, 3, 4}, the second RI set is {1, 2, 3}, and the virtual RI value selected by the terminal is 4, and the actual RI determined by the calculation is 2. That is, the terminal calculates CQI and PMI according to RI=2, and the PMI calculated by the terminal corresponds to the precoding matrix of the two data streams. The resources of the uplink CSI feedback are allocated according to the largest RI value (3) in the second RI set, so the CQI and PMI calculated by the terminal according to RI=2 can be transmitted in the allocated resources.

For Alt-1, the terminal feeds back the virtual RI value, as well as CQI and PMI, as shown in Figure 1. The number of bits of the terminal feedback virtual RI value is determined by the number of elements in the first RI set, or is a fixed value.

or

For Alt-2, the terminal feeds back the virtual RI value, the actual RI value, and the CQI and PMI information, as shown in Figure 2. The number of bits of the terminal to feed back the virtual RI value is determined by the number of elements in the first RI set, or is a fixed value, and the number of bits of the actual RI value fed back by the terminal is determined by the number of elements in the second RI set, or is a fixed value. .

Step 8:

For Alt-1, the base station receives the virtual RI value fed back by the terminal, and determines the actual RI value according to the virtual RI value, where the actual RI value is the largest RI value in the second RI set that is not greater than the virtual RI value.

For Alt-2, the base station receives the virtual RI value and the actual RI value fed back by the terminal.

The base station receives information such as CQI and PMI fed back by the terminal according to the actual RI value. The method includes determining the number of bits of information such as CQI and PMI fed back by the terminal according to the actual RI value, and performing reception.

An illustration of several specific embodiments is given below.

Embodiment 1:

Assume that the base station configures a 32-port type II codebook, and the codebook parameter L=3, and the number of feedback sub-bands is 10. The system pre-defined RI overhead 3 bits. When there is a rank = 1 to 4, there is only one code word, and the CQI of each subband is 4 bits. Assuming RI=3, the overhead of PMI is 548 bits; when RI=4, the overhead of PMI is 726 bits. It is assumed that the number of RIs allowed in the CSR constraint information is more than one. In this case, the CSI information fed back by the terminal includes two RIs.

Base station side:

The protocol stipulates that the first RI set is {1, 2, 3, 4} and does not change.

The base station determines that the second RI set is {1, 2}. The base station determines to allocate the uplink channel resources with RI=2. From Table 1, the PMI load overhead of RI=2 is 370 bits. Considering the overhead of RI of 3 bits and the CQI overhead of 10 subbands of 40 bits, the overhead of CSI corresponding to RI=2 is RI+PMI+CQI=3+370+40=413 bits.

The base station triggers the terminal to feed back the CSI information by signaling, and sends the information of the second RI set to the terminal (which can be sent through the CSR information). And allocating uplink channel resources according to resources occupied by 413 bits of information.

The base station receives the CSI information fed back by the terminal. This information is decoded to obtain the PMI and CQI fed back by the terminal, and the actual RI=2, and the virtual RI=3.

The base station combines the actual RI=2, PMI and CQI for scheduling.

The base station determines that the second RI set is {1, 2, 3} according to the virtual RI=3. The base station determines to allocate the uplink channel resources with RI=3. According to the foregoing assumption, the PMI load overhead of RI=3 is 548 bits. Considering the overhead of RI of 3 bits and the CQI overhead of 10 subbands of 40 bits, the overhead of CSI corresponding to RI=3 is RI+PMI+CQI=3+548+40=591 bits.

The base station triggers the terminal to feed back the CSI information by signaling, and sends the information of the second RI set to the terminal (which can be sent through the CSR information). And allocating uplink channel resources according to resources occupied by 591 bits of information.

The base station receives the CSI information fed back by the terminal. This information is decoded to obtain the PMI and CQI fed back by the terminal, and the actual RI=3, and the virtual RI=4.

The base station combines the actual RI=3, PMI and CQI for scheduling. It is determined that the second RI set is {1, 2, 3, 4}.

Terminal side:

The terminal receives the information of the second RI set sent by the base station, and according to the protocol, determines that the first RI set is {1, 2, 3, 4}, and the second RI set is {1, 2}.

The terminal calculates a virtual RI=3 from the first RI set {1, 2, 3, 4} according to the channel measurement.

The terminal calculates the actual RI=2 from the second RI set {1, 2} according to the channel measurement. And calculate the PMI\CQI information corresponding to the actual RI information.

The terminal combines the actual RI=2 and its corresponding PMI\CQI information, and the virtual RI=3 to form CSI information. The CSI information is fed back on the uplink channel resource allocated by the base station according to the 413-bit information.

The terminal receives the information of the second RI set sent by the base station, and determines that the second RI set is {1, 2, 3}.

The terminal calculates a virtual RI=4 from the first RI set {1, 2, 3, 4} according to the channel measurement.

The terminal calculates the actual RI=3 from the second RI set {1, 2, 3} according to the channel measurement. And calculate the PMI\CQI information corresponding to the actual RI information.

The terminal combines the actual RI=3 and its corresponding PMI\CQI information, and the virtual RI=4 to form CSI information. The CSI information is fed back on the uplink channel resource allocated by the base station according to the 591 bit information.

Embodiment 2:

The first RI set is {1, 2}. The second RI set is {1} at the nth trigger, and the virtual RI value selected by the terminal is 2, and the actual RI is 1. That is, the terminal calculates CQI and PMI according to RI=1, and the PMI calculated by the terminal only corresponds to the precoding matrix of one data stream. The resources of the uplink CSI feedback are allocated according to the largest RI value (1) in the second RI set, so the CQI and PMI calculated by the terminal according to RI=1 can be transmitted in the allocated resources.

The virtual RI value reported by the terminal is 2, indicating that the channel from the base station to the terminal can support two-stream transmission. The base station can make the second set {1, 2} in the n+1th trigger, that is, the terminal can feed up to two. PMI and CQI of the data stream. The base station allocates resources for uplink feedback according to the amount of data fed back by the two data streams. Since the base station still selects the virtual RI value as 2 with a large probability, the actual RI value is also 2, making full use of the uplink resources.

Embodiment 3:

The first RI set is {1, 2}. The second RI set is {1, 2} at the nth trigger, and the virtual RI value selected by the terminal is 1, and the actual RI is 1. That is, the terminal calculates CQI and PMI according to RI=1, and the PMI calculated by the terminal only corresponds to the precoding matrix of one data stream. The resources of the uplink CSI feedback are allocated according to the largest RI value (2) in the second RI set, and the CQI and PMI calculated by the terminal according to RI=1 can be transmitted in the allocated resources, and there is a certain resource waste.

The virtual RI value reported by the terminal indicates that the channel from the base station to the terminal can only support one stream transmission. The base station can make the second set {1} on the n+1th trigger, that is, the terminal can only feed back one at most. PMI and CQI of the data stream. The base station allocates resources for uplink feedback according to the amount of data fed back by one data stream. Since the base station still selects the virtual RI value as 1 with a large probability, the actual RI value is also 1, which reduces the waste of resources.

In the above embodiment, the base station is used as the network side device to perform resource allocation as an example. The resource allocation method described in the embodiment of the present application may be performed by other network entities.

Therefore, on the network side, referring to FIG. 3, a resource allocation method provided by the embodiment of the present application includes:

S101. Determine a rank indication set.

S102. Allocate an uplink channel resource to the terminal according to the value of the rank indication in the rank indication set.

It should be noted that, in this embodiment of the present application, only one rank indication set may be determined, and an uplink channel resource is allocated to the terminal according to the value of the rank indication in the rank indication set. A plurality of rank indicator sets may also be determined, and an uplink channel resource is allocated to the terminal according to the value of the rank indication in the one of the plurality of rank indication sets.

Optionally, the rank indication set is a second rank indication set, such as the foregoing second RI set;

The determining the rank indication set specifically includes:

Determining a first rank indication set, such as the first RI set described above;

Or, based on the value of the virtual rank indication fed back by the terminal, selecting a rank indication from the first rank indication set, and generating a second rank indication set. Thereby, the uplink channel resources allocated for the terminal can be further utilized better.

Determining, according to one of the capability information, the deployment scenario, and the service condition of the terminal, the first rank indication set;

Optionally, it also includes:

The CQI and the PMI fed back by the terminal, that is, the CSI fed back by the terminal, are received according to the value of the actual rank indication.

Correspondingly, on the terminal side, referring to FIG. 4, a channel state information reporting method provided by the embodiment of the present application includes:

S201. Determine a rank indication set.

S202. Determine a virtual rank indication, and determine an actual rank indication from the rank indication set.

S203. Determine channel state information according to the value indicated by the actual rank.

S204. Feed the virtual rank indication and the channel state information on an uplink channel resource, or feed back the virtual rank indication, the actual rank indication, and the channel state information.

Optionally, the rank indication set is a second rank indication set;

The method also includes determining a first rank indication set;

The virtual rank indication is determined from the first rank indication set.

Optionally, the second rank indication set is a subset of the first rank indication set, and is determined by the terminal according to signaling sent by the base station side.

The terminal feeds the virtual rank indication to the base station, and may enable the base station to perform the next uplink channel resource allocation according to the virtual rank indication, that is, determine a new second rank indication set according to the virtual rank indication, and perform uplink according to the second rank indication set. Channel resource allocation.

Optionally,

The device provided in the embodiment of the present application is described below.

On the network side, referring to FIG. 5, a resource allocation apparatus provided in this embodiment includes:

a memory 520, configured to store program instructions;

The processor 500 is configured to invoke a program instruction stored in the memory 520, and execute according to the obtained program:

Determining a rank indication set;

Optionally, the rank indication set is a second rank indication set;

The determining the rank indication set specifically includes:

Determining a first rank indication set;

Optionally, the transceiver 510 is further configured to: notify, by the transceiver 510, related information of the second rank indication set to the terminal.

Optionally, the related information of the second rank indication set includes: a value of all rank indications in the second rank indication set, or a value of a maximum rank indication, where the maximum rank indication value is Selecting the determined from the first rank indication set according to the value of the virtual rank indication fed back by the terminal, or selecting the determined second rank indication set from the first rank indication set based on a service condition. The value of the rank indication in the less than or equal to the value indicated by the maximum rank.

Optionally, the transceiver 510 is further included, and the processor 500 is further configured to:

Receiving, by the transceiver 510, a value of the virtual rank indication fed back by the terminal, and determining a value of the actual rank indication according to the value of the virtual rank indication; or receiving a value of the virtual rank indication and a value of the actual rank indication fed back by the terminal ;

The CQI and PMI fed back by the terminal are received by the transceiver 510 according to the value indicated by the actual rank.

The transceiver 510 is configured to receive and transmit data under the control of the processor 500.

In FIG. 5, the bus architecture can include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 500 and various circuits of memory represented by memory 520. The bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein. The bus interface provides an interface. Transceiver 510 can be a plurality of components, including a transmitter and a transceiver, providing means for communicating with various other devices on a transmission medium. The processor 500 is responsible for managing the bus architecture and general processing, and the memory 520 can store data used by the processor 500 when performing operations.

The processor 500 can be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device ( Complex Programmable Logic Device, CPLD).

Correspondingly, on the terminal side, referring to FIG. 6, a channel state information reporting apparatus provided by the embodiment of the present application includes:

a memory 620, configured to store program instructions;

The processor 600 is configured to invoke a program instruction stored in the memory 620, and execute according to the obtained program:

Determining a rank indication set;

Transmitting the virtual rank indication and the channel state information by the transceiver 610 on the uplink channel resource; or feeding back the virtual rank indication, the actual rank indication, and the actual rank indication by the transceiver 610 on the uplink channel resource, and The channel state information.

Optionally, the rank indication set is a second rank indication set;

The processor 600 is further configured to: determine a first rank indication set;

The virtual rank indication is determined from the first rank indication set.

Optionally,

The transceiver 610 is configured to receive and transmit data under the control of the processor 600.

Wherein, in FIG. 6, the bus architecture can include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 600 and various circuits of memory represented by memory 620. The bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein. The bus interface provides an interface. Transceiver 610 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium. For different user equipments, the user interface 630 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

The processor 600 is responsible for managing the bus architecture and general processing, and the memory 620 can store data used by the processor 600 in performing operations.

Optionally, the processor 600 may be a CPU (Central Embedded Device), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a CPLD (Complex Programmable Logic Device). , complex programmable logic devices).

On the network side, referring to FIG. 7, the second resource allocation apparatus provided by the embodiment of the present application includes:

a determining unit 11 configured to determine a rank indication set;

The allocating unit 12 is configured to allocate an uplink channel resource to the terminal according to the value of the rank indication in the rank indication set.

On the terminal side, referring to FIG. 8, the second channel state information reporting apparatus provided by the embodiment of the present application includes:

a first unit 21, configured to determine a rank indication set;

a second unit 22, configured to determine a virtual rank indication, and determine an actual rank indication from the rank indication set;

The third unit 23 is configured to determine channel state information according to the value of the actual rank indication;

The fourth unit 24 is configured to feed back the virtual rank indication and the channel state information on the uplink channel resource, or feed back the virtual rank indication, the actual rank indication, and the channel state information.

A computer storage medium provided by the embodiment of the present application is stored with computer executable instructions, and the computer executable instructions are used to cause the computer to perform any of the methods provided in the embodiments of the present application. The computer storage medium can be any available media or data storage device accessible by a computer, including but not limited to magnetic storage (eg, floppy disk, hard disk, magnetic tape, magnetic optical (MO), etc.), optical storage (eg, CD) , DVD, BD, HVD, etc.), and semiconductor memories (such as ROM, EPROM, EEPROM, NAND FLASH, Solid State Drives (SSD)).

The method provided by the embodiment of the present application can be applied to a terminal device, and can also be applied to a network device.

The terminal device may also be referred to as a user equipment (User Equipment, referred to as "UE"), a mobile station (Mobile Station, referred to as "MS"), a mobile terminal (Mobile Terminal), etc., optionally, the terminal may The ability to communicate with one or more core networks via a Radio Access Network (RAN), for example, the terminal can be a mobile phone (or "cellular" phone), or a computer with mobile nature, etc. For example, the terminal can also be a portable, pocket, handheld, computer built-in or in-vehicle mobile device.

A network device may be a base station (e.g., an access point) that refers to a device in the access network that communicates with the wireless terminal over one or more sectors over the air interface. The base station can be used to convert the received air frame with the IP packet as a router between the wireless terminal and the rest of the access network, wherein the rest of the access network can include an Internet Protocol (IP) network. The base station can also coordinate attribute management of the air interface. For example, the base station may be a Global System for Mobile Communication (GSM) or a base station (BTS, Base Transceiver Station) in Code Division Multiple Access (CDMA), or may be a wideband code multiple address ( The base station (NodeB) in the Wideband Code Division Multiple Access (WCDMA) may also be an evolved base station (NodeB or eNB or e-NodeB, evolutional Node B) in the LTE, which is not limited in this embodiment.

The above method processing flow can be implemented by a software program, which can be stored in a storage medium, and when the stored software program is called, execute the step flow in any of the above methods.

In summary, in the technical solution provided by the embodiment of the present application, the base station allocates an uplink channel resource to the terminal according to the RI value in the second RI set, and the terminal determines the value of the actual RI from the second RI set, and Calculate the PMI\CQI information corresponding to the actual RI. At the same time, the terminal feedbacks the calculated value of the virtual RI from the first RI set; the terminal feeds back the virtual RI, or the virtual RI and the actual RI; and the base station determines the RI value in the second RI set according to the virtual RI information fed back by the terminal. . Therefore, for the codebook defined in the prior art for the NR system, the dynamic range of the load overhead is large. If the uplink information resource is allocated according to the maximum cost, the resource may be wasted; if the allocated uplink resource is small, , the problem of the accuracy of the feedback cannot be guaranteed. Embodiments of the present application can simultaneously ensure feedback accuracy and efficient use of resources.

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 will be understood that each flow and/or block of the flowchart illustrations and/or FIG. 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, it will be apparent that those skilled in the art can make further changes and modifications to the embodiments. 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 resource allocation method, the method comprising:

Determining a rank indication set;

And allocating an uplink channel resource to the terminal according to the value of the rank indication in the rank indication set.
The method according to claim 1, wherein the rank indication set is a second rank indication set;

The determining the rank indication set specifically includes:

Determining a first rank indication set;

Determining, according to the first rank indication set, a second rank indication set, wherein the second rank indication set is a subset of the first rank indication set.
The method according to claim 2, wherein determining the second rank indication set according to the first rank indication set comprises:

And selecting, according to the service condition, a rank indication from the first rank indication set, to generate a second rank indication set;

Or, based on the value of the virtual rank indication fed back by the terminal, selecting a rank indication from the first rank indication set, and generating a second rank indication set.
The method according to claim 2, wherein the determining the first rank indication set comprises:

Determining, according to one of the capability information, the deployment scenario, and the service condition of the terminal, a first rank indication set;

Alternatively, the first rank indication set is determined in a manner agreed in advance with the terminal.
The method according to any one of claims 2 to 4, wherein the value of the rank indication in the second rank indication set is a discontinuous value; and/or,

The value of the rank indication in the second rank indication set is less than or equal to the value of the maximum rank indication, and the value of the maximum rank indication is a value according to the virtual rank feedback fed back by the terminal, from the first rank. Determining the selection in the set, or selecting the determined from the first rank indication set based on the service condition.
The method according to any one of claims 2 to 4, further comprising:

Notifying the terminal of related information of the second rank indication set.
The method according to claim 6, wherein the notifying the related information of the second rank indication set to the terminal comprises:

The related information of the second rank indication set is notified to the terminal by sending physical layer signaling, high layer signaling, or signaling triggered by the aperiodic channel state information CSI.
The method according to claim 7, wherein the information about the second rank indication set specifically includes: a value of all rank indications in the second rank indication set, or a value of a maximum rank indication, The value of the maximum rank indication is determined according to the value of the virtual rank indication fed back by the terminal, and is determined from the first rank indication set, or is determined from the first rank indication set based on a service condition. The value of the rank indication in the second rank indication set is less than or equal to the value indicated by the maximum rank.
The method of claim 1 further comprising:

Receiving a value of the virtual rank indication fed back by the terminal, and determining a value of the actual rank indication according to the value of the virtual rank indication; or receiving a value of the virtual rank indication and a value of the actual rank indication fed back by the terminal;

The CQI and the PMI fed back by the terminal are received according to the value indicated by the actual rank.
The method of claim 9 wherein:

The value of the actual rank indication is a value of the rank indication set that is not greater than the value of the virtual rank indication that is the largest; or

The value of the actual rank indication is a value of a rank indication determined from the rank indication set according to a channel condition and/or an interference condition of a base station to a terminal.
A channel state information reporting method, comprising:

Determining a rank indication set;

Determining a virtual rank indication and determining an actual rank indication from the rank indication set;

Determining channel state information according to the value of the actual rank indication;

And over the uplink channel resource, feeding back the virtual rank indication, and the channel state information; or feeding back the virtual rank indication, the actual rank indication, and the channel state information.
The method according to claim 11, wherein the rank indication set is a second rank indication set;

The method also includes determining a first rank indication set;

The virtual rank indication is determined from the first rank indication set.
The method of claim 11 wherein

The value of the actual rank indication is a value of the rank indication set that is not greater than the value of the virtual rank indication that is the largest; or

The value of the actual rank indication is a value of a rank indication determined from the rank indication set according to a channel condition and/or an interference condition of a base station to a terminal.
A resource allocation device, comprising:

a memory for storing program instructions;

a processor, configured to invoke a program instruction stored in the memory, and execute according to the obtained program:

Determining a rank indication set;

And allocating an uplink channel resource to the terminal according to the value of the rank indication in the rank indication set.
The apparatus according to claim 14, wherein the rank indication set is a second rank indication set;

The determining the rank indication set specifically includes:

Determining a first rank indication set;

Determining, according to the first rank indication set, a second rank indication set, wherein the second rank indication set is a subset of the first rank indication set.
The apparatus according to claim 15, wherein determining the second rank indication set according to the first rank indication set comprises:

And selecting, according to the service condition, a rank indication from the first rank indication set, to generate a second rank indication set;

Or, based on the value of the virtual rank indication fed back by the terminal, selecting a rank indication from the first rank indication set, and generating a second rank indication set.
The device according to claim 15, wherein the determining the first rank indication set comprises:

Determining, according to one of the capability information, the deployment scenario, and the service condition of the terminal, a first rank indication set;

Alternatively, the first rank indication set is determined in a manner agreed in advance with the terminal.
The apparatus according to any one of claims 15 to 17, wherein the value indicated by the rank in the second rank indication set is a discontinuous value; and/or,

The value of the rank indication in the second rank indication set is less than or equal to the value of the maximum rank indication, and the value of the maximum rank indication is a value according to the virtual rank feedback fed back by the terminal, from the first rank. Determining the selection in the set, or selecting the determined from the first rank indication set based on the service condition.
The device according to any one of claims 15 to 17, further comprising a transceiver, wherein the processor is further configured to: notify, by the transceiver, information about the second rank indication set to the terminal.
The device according to claim 19, wherein the notifying the related information of the second rank indication set to the terminal comprises:

The related information of the second rank indication set is notified to the terminal by sending physical layer signaling, high layer signaling, or signaling triggered by the aperiodic channel state information CSI.
The device according to claim 20, wherein the information about the second rank indication set specifically includes: a value of all rank indications in the second rank indication set, or a value of a maximum rank indication, The value of the maximum rank indication is determined according to the value of the virtual rank indication fed back by the terminal, and is determined from the first rank indication set, or is determined from the first rank indication set based on a service condition. The value of the rank indication in the second rank indication set is less than or equal to the value indicated by the maximum rank.
The device according to claim 14, further comprising a transceiver, wherein the processor is further configured to:

Receiving, by the transceiver, a value of the virtual rank indication fed back by the terminal, and determining a value of the actual rank indication according to the value of the virtual rank indication; or receiving a value of the virtual rank indication and a value of the actual rank indication fed back by the terminal;

The CQI and PMI fed back by the terminal are received by the transceiver according to the value indicated by the actual rank.
The device according to claim 22, wherein

The value of the actual rank indication is a value of the rank indication set that is not greater than the value of the virtual rank indication that is the largest; or

The value of the actual rank indication is a value of a rank indication determined from the rank indication set according to a channel condition and/or an interference condition of a base station to a terminal.
A channel state information reporting device, comprising:

a memory for storing program instructions;

a processor, configured to invoke a program instruction stored in the memory, and execute according to the obtained program:

Determining a second rank indication set;

Determining an actual rank indication from the second rank indication set;

Determining channel state information according to the value of the actual rank indication;

And over the uplink channel resource, feeding back the virtual rank indication, and the channel state information; or feeding back the virtual rank indication, the actual rank indication, and the channel state information.
The apparatus according to claim 24, wherein the rank indication set is a second rank indication set;

The processor is further configured to: determine a first rank indication set;

The virtual rank indication is determined from the first rank indication set.
The device according to claim 24, wherein

The value of the actual rank indication is a value of the rank indication set that is not greater than the value of the virtual rank indication that is the largest; or

The value of the actual rank indication is a value of a rank indication determined from the rank indication set according to a channel condition and/or an interference condition of a base station to a terminal.
A resource allocation device, comprising:

a determining unit, configured to determine a rank indication set;

And an allocating unit, configured to allocate an uplink channel resource to the terminal according to the value of the rank indication in the rank indication set.
A channel state information reporting device, comprising:

a first unit, configured to determine a rank indication set;

a second unit, configured to determine a virtual rank indication, and determine an actual rank indication from the rank indication set;

a third unit, configured to determine channel state information according to the value indicated by the actual rank;

a fourth unit, configured to feed back the virtual rank indication and the channel state information on an uplink channel resource; or feed back the virtual rank indication, the actual rank indication, and the channel state information.
A computer storage medium, characterized in that the computer storage medium stores computer executable instructions for causing the computer to perform the method of any one of claims 1 to 13.