# US 12,191,968 B2 · Communication apparatus and communication method

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- Number: US 12,191,968 B2
- Document ID: US12191968B2
- Status: Granted
- Kind: B2
- Application number: 18/173,058
- Filed: 2023-02-23
- Published: 2023-06-22
- Granted: 2025-01-07
- Earliest claimed: 2018-12-05
- Assignees: Sony Group Corporation
- Applicants: Sony Group Corporation
- Inventors: Shigeru Sugaya
- Web page: https://patentgrep.com/patent/US12191968B2

## CPC

- H04B 7/0697: {using spatial multiplexing}
- H04L 1/08: by repeating transmission, e.g. Verdan system {(H04L1/1858 and H04L1/189 take precedence)}
- H04L 1/1621: {Group acknowledgement, i.e. the acknowledgement message defining a range of identifiers, e.g. of sequence numbers}
- H04W 72/0446: Resources in time domain, e.g. slots or frames
- H04W 80/02: Data link layer protocols
- H04B: TRANSMISSION
- 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

The present technology relates to a communication apparatus and a communication method that permit realization of more reliable communication. Provided is a communication apparatus that includes a control section that performs control such that plural aggregated subframes are sent in a predetermined sequence for each frame included in each of spatially multiplexed streams when a frame is sent to another communication apparatus as plural spatially multiplexed streams. The present technology is applicable, for example, to a communication apparatus included in a wireless LAN system.

## Claims

### Claim 1

A communication apparatus comprising:
a control circuitry adapted to perform control such that plural aggregated subframes of a single frame are sent to another communication apparatus in a predetermined sequence via plural spatially multiplexed streams,
wherein the control circuitry assigns sequence numbers to the plural aggregated subframes such that the assigned sequence numbers for the plural aggregated subframes differ from each other based on a corresponding stream of the plural spatially multiplexed streams.

### Claim 2 (depends on 1)

The communication apparatus according to claim 1, wherein
the control circuitry determines a number of the plural spatially multiplexed streams and a number of the plural aggregated subframes commensurate with a communication reliability determined by the control circuitry.

### Claim 3 (depends on 2)

The communication apparatus according to claim 2, wherein
the control circuitry determines the communication reliability commensurate with attributes of the another communication apparatus.

### Claim 4 (depends on 1)

The communication apparatus according to claim 1, wherein
the control circuitry includes, as the frame, at least one frame in which subframes are arranged in order of sequence number.

### Claim 5 (depends on 1)

The communication apparatus according to claim 1, wherein
the control circuitry includes, as the frame, at least one frame in which subframes are arranged in reverse order of sequence number.

### Claim 6 (depends on 1)

The communication apparatus according to claim 1, wherein
the subframes are arranged in ascending or descending order of sequence number.

### Claim 7 (depends on 1)

The communication apparatus according to claim 1, wherein
the plural aggregated subframes are MAC protocol data units (MPDUs), and
the single frame is an Aggregation-MPDU (A-MPDU).

### Claim 8

A communication method comprising:
performing control such that plural aggregated subframes of a single frame are sent to another communication apparatus in a predetermined sequence via plural spatially multiplexed streams,
wherein the control comprises assigning sequence numbers to the plural aggregated subframes such that the assigned sequence numbers for the plural aggregated subframes differ from each other based on a corresponding stream of the plural spatially multiplexed streams.

### Claim 9

A non-transitory computer readable product having instructions encoded therein to cause a communication apparatus to perform a method, the method comprising:
performing control such that plural aggregated subframes of a single frame are sent to another communication apparatus in a predetermined sequence via plural spatially multiplexed streams,
wherein the control comprises assigning sequence numbers to the plural aggregated subframes such that the assigned sequence numbers for the plural aggregated subframes differ from each other based on a corresponding stream of the plural spatially multiplexed streams.