# US 11,122,601 B2 · Buffer status report sending method, terminal device, and network device

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- Number: US 11,122,601 B2
- Document ID: US11122601B2
- Status: Granted
- Kind: B2
- Application number: 16/577,637
- Filed: 2019-09-20
- Published: 2020-01-09
- Granted: 2021-09-14
- Earliest claimed: 2017-03-21
- Assignees: Huawei Technologies Co., Ltd.
- Applicants: Huawei Technologies Co., Ltd.
- Inventors: Jiafeng Shao; Lei Guan
- Web page: https://patentgrep.com/patent/US11122601B2

## CPC

- H04L 1/0072: {Error control for data other than payload data, e.g. control data}
- H04W 72/1268: of uplink data flows
- H04L 1/0042: {Encoding specially adapted to other signal generation operation, e.g. in order to reduce transmit distortions, jitter, or to improve signal shape (H04L1/0067 takes precedence)}
- H04L 1/0061: {Error detection codes}
- H04L 1/0078: {Avoidance of errors by organising the transmitted data in a format specifically designed to deal with errors, e.g. location (forward error control, e.g. FEC, CRC H04L1/004; adaptive formatting H04L1/0006; mappings H04L27/00)}
- H04L 1/1854: {Scheduling and prioritising arrangements}
- H04L 1/1887: {Scheduling and prioritising arrangements}
- H04L 27/2607: {Cyclic extensions}
- H04W 52/346: {distributing total power among users or channels}
- H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network
- H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal
- H04W 72/569: {of the traffic information}
- H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals}
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

Embodiments of this application provide a buffer status report (BSR) sending method, a terminal device, and a network device. The method includes: determining a first resource configured for a first channel; adding, a first cyclic redundancy check (CRC) to a BSR; and sending a second channel on the first resource, or sending the first channel and a second channel on the first resource, where the second channel is used to carry the BSR to which the first CRC is added. Based on the embodiments of this application, the terminal device independently adds the first CRC to the BSR, and sends the second channel carrying the BSR to a network device, so that the network device learns arrival of data corresponding to the second channel at the terminal device. Therefore, the network device can pre-configure a resource for the data, thereby reducing a transmission latency of the data.

## Claims

### Claim 1

A buffer status report sending method, comprising:
determining a first resource, wherein the first resource is a resource configured for a first channel, and the first channel is a data channel;
adding a first cyclic redundancy check (CRC) to a buffer status report; and
sending the first channel and a second channel on the first resource, wherein the second channel is used to carry the buffer status report to which the first CRC is added, wherein before the sending the first channel and the second channel on the first resource, adding a second CRC to a first transport block, wherein the first channel is used to carry the first transport block to which the second CRC is added, and after the adding the second CRC to the first transport block, dividing the first transport block to which the second CRC is added into at least two code blocks, and, adding a third CRC to each of the at least two code blocks.

### Claim 2 (depends on 1)

The method according to claim 1, wherein the sending the first channel and the second channel on the first resource comprises:
sending the first channel and the second channel on the first resource, wherein a sum of a transmit power of the first channel and a transmit power of the second channel is less than or equal to a first preset power threshold.

### Claim 3 (depends on 1)

The method according to claim 1, wherein the first resource comprises a plurality of resource elements, and the sending the first channel and the second channel on the first resource comprises:
sending the first channel on some of the plurality of resource elements, and sending the second channel on some other resource elements of the plurality of resource elements.

### Claim 4 (depends on 1)

The method according to claim 1, wherein the sending a second channel on the first resource comprises:
sending the second channel on the first resource and skipping sending the first channel, wherein a priority of the first channel is lower than or equal to a priority of the second channel.

### Claim 5

An apparatus, comprising:
a processor, configured to
determine a first resource, wherein the first resource is a resource configured for a first channel, and the first channel is a data channel, and
add a first cyclic redundancy check (CRC) to a buffer status report; and
a transceiver, configured to send the first channel and a second channel on the first resource, wherein the second channel is used to carry the buffer status report to which the first CRC is added, wherein before the sending the first channel and the second channel on the first resource, the processor is further configured to add a second CRC to a first transport block, wherein the first channel is used to carry the first transport block to which the second CRC is added, and after the adding the second CRC to the first transport block, the processor is further configured to divide the first transport block to which the second CRC is added into at least two code blocks, and, add a third CRC to each of the at least two code blocks.

### Claim 6 (depends on 5)

The apparatus according to claim 5, wherein the transceiver is configured to:
send the first channel and the second channel on the first resource, wherein a sum of a transmit power of the first channel and a transmit power of the second channel is less than or equal to a first preset power threshold.

### Claim 7 (depends on 5)

The apparatus according to claim 5, wherein the first resource comprises a plurality of resource elements, and the transceiver is configured to:
send the first channel on some of the plurality of resource elements, and send the second channel on some other resource elements of the plurality of resource elements.

### Claim 8 (depends on 5)

The apparatus according to claim 5, wherein the transceiver is configured to:
send the second channel on the first resource and skip sending the first channel, wherein a priority of the first channel is lower than or equal to a priority of the second channel.

### Claim 9

An apparatus, comprising:
a processor, configured to determine a first resource, wherein the first resource is a resource configured for a first channel, and the first channel is a data channel; and
a transceiver, configured to receive a second channel on the first resource, wherein the second channel is used to carry a buffer status report to which a first cyclic redundancy check (CRC) is added, receive the first channel and the second channel on the first resource, wherein the first channel is used to carry a first transport block to which a second CRC is added, wherein the processor is further configured to: determine, based on the first CRC, whether the second channel is correctly received, determine, based on the second CRC, whether the first channel is correctly received, wherein the transceiver is configured to: receive the first channel and the second channel on the first resource, wherein the first transport block to which the second CRC is added comprises at least two code blocks, and each of the at least two code blocks is a code block to which a third CRC is added.

### Claim 10 (depends on 9)

The apparatus according to claim 9, wherein the first resource comprises a plurality of resource elements, and the processor is configured to:
detect the first channel on some of the plurality of resource elements;
detect the second channel on some other resource elements of the plurality of resource elements; and
detect the second channel on all of the plurality of resource elements.

### Claim 11 (depends on 9)

The apparatus according to claim 9, wherein the processor is configured to perform at least one of the following:
detecting the first channel by using a first uplink reference signal; or
detecting the second channel by using a second uplink reference signal.

### Claim 12 (depends on 9)

The apparatus according to claim 9, wherein the first resource comprises a plurality of resource elements, and the transceiver is configured to:
receive the first channel on some of the plurality of resource elements, and
receive the second channel on some other resource elements of the plurality of resource elements.