JP-7855790-B2 - Method for indicating physical layer configuration and related apparatus

JP7855790B2JP 7855790 B2JP7855790 B2JP 7855790B2JP-7855790-B2

Inventors

チエン，ビン
リウ，チェンチェン
ヤーン，シュイン

Assignees

華為技術有限公司

Dates

Publication Date: 20260508
Application Date: 20230811
Priority Date: 20220819

Claims (20)

A method for specifying the physical layer configuration: A step in which a first communication device generates a physical layer protocol data unit (PPDU), wherein the PPDU includes a preamble field and an 8-bit frame start delimiter (SFD) field, wherein different values of the SFD field correspond to different physical layer configurations, or different values of the preamble field correspond to different physical layer configurations; The process includes the step of transmitting a signal by the first communication device, wherein the signal is generated by the PPDU based on a physical layer configuration corresponding to the value of the SFD field or the value of the preamble field, method.
The method according to claim 1, wherein the PPDU further includes a physical layer header (PHR) field and a payload field.
The method according to claim 2, wherein the physical layer configuration includes one or more of the following: a data rate, the length of the preamble field, the length of the chip sequence corresponding to the preamble field and the SFD field, the length of the PHR field, the length of the chip sequence corresponding to the PHR field and the payload field, or forward error correction codes for the PHR field and the payload field.
The physical layer configuration includes the length of the chip sequence corresponding to the PHR field and the payload field; The PHR field includes instruction information, which indicates whether the payload field has a forward error correction code. The method according to claim 2.
The value of the SFD field belongs to a first set of values, and the value of the preamble field is obtained by repeating a certain value in the first set of values one or more times; The first set of values contains M values, and these M values meet the following conditions, namely: The sum of the Hamming distances between chip sequences corresponding to any two of the M values is greater than or equal to the sum of the Hamming distances between chip sequences corresponding to any two of the M values in the second set other than those in the first set. Satisfying the conditions, The aforementioned second set of values contains N values, where N is greater than M, M is greater than 2, and both N and M are positive integers. The method according to claim 1.
The different values of the SFD field The method according to claim 1.
The method according to claim 1, wherein the value of the SFD field does not include any of the following values: a value where the first four bits are 0000 and the last four bits are any value, a value where the last four bits are 0000 and the first four bits are any value, and a value where eight bits are 00000000.
A method for specifying the physical layer configuration: A step in which a signal is received by a second communication device, the signal being generated by a physical layer protocol data unit (PPDU) based on a physical layer configuration corresponding to the value of the preamble field or the value of the 8-bit frame start delimiter (SFD) field in the PPDU; A step of demodulating the signal using the second communication device to obtain the preamble field and the SFD field included in the PPDU, wherein different values of the SFD field correspond to different physical layer configurations, or different values of the preamble field correspond to different physical layer configurations; The second communication device includes the steps of determining the physical layer configuration based on the value of the SFD field or the value of the preamble field, and demodulating the signal based on the determined physical layer configuration to obtain the payload field included in the PPDU, method.
The method according to claim 8, wherein the PPDU further comprises a physical layer header (PHR) field and the payload field.
The method according to claim 9, wherein the physical layer configuration includes one or more of the following: a data rate, the length of the preamble field, the length of the chip sequence corresponding to the preamble field and the SFD field, the length of the PHR field, the length of the chip sequence corresponding to the PHR field and the payload field, or forward error correction codes for the PHR field and the payload field.
The physical layer configuration includes the length of the chip sequence corresponding to the PHR field and the payload field; The PHR field includes instruction information, which indicates whether the payload field has a forward error correction code. The method according to claim 9.
The value of the SFD field belongs to a first set of values, and the value of the preamble field is obtained by repeating a certain value in the first set of values one or more times; The first set of values contains M values, and these M values meet the following conditions, namely: The sum of the Hamming distances between chip sequences corresponding to any two of the M values is greater than or equal to the sum of the Hamming distances between chip sequences corresponding to any two of the M values in the second set other than those in the first set. Satisfying the conditions, The aforementioned second set of values contains N values, where N is greater than M, M is greater than 2, and both N and M are positive integers. The method according to claim 8.
The different values of the SFD field The method according to claim 8 .
The method according to claim 8, wherein the value of the SFD field does not include any of the following values: a value where the first four bits are 0000 and the last four bits are any value, a value where the last four bits are 0000 and the first four bits are any value, and a value where eight bits are 00000000.
A processing unit configured to generate a Physical Layer Protocol Data Unit (PPDU), wherein the PPDU includes a preamble field and an 8-bit Frame Start Delimiter (SFD) field, wherein different values of the SFD field correspond to different Physical Layer configurations, or different values of the preamble field correspond to different Physical Layer configurations; A transceiver unit configured to transmit a signal, wherein the signal is generated by the PPDU based on a physical layer configuration corresponding to the value of the SFD field or the value of the preamble field. Communication device.
The apparatus according to claim 15, wherein the PPDU further comprises a physical layer header (PHR) field and a payload field.
The different values of the SFD field The apparatus according to claim 15.
A transceiver unit configured to receive a signal, wherein the signal is generated by a physical layer protocol data unit (PPDU) based on a physical layer configuration corresponding to the value of the preamble field or the value of the 8-bit frame start delimiter (SFD) field in the PPDU; A processing unit configured to demodulate the signal and obtain the preamble field and SFD field contained in the PPDU, wherein different values of the SFD field correspond to different physical layer configurations, or different values of the preamble field correspond to different physical layer configurations. The processing unit is further configured to determine the physical layer configuration based on the value of the SFD field or the value of the preamble field, and to demodulate the signal based on the determined physical layer configuration to obtain the payload field included in the PPDU. Communication device.
The communication device according to claim 18, wherein the PPDU further includes a physical layer header (PHR) field and the payload field.
The different values of the SFD field The apparatus according to claim 18.

Description

This application relates to the field of communication technology, and more particularly to a method for indicating the physical layer configuration and related apparatus. Ultra-wideband (UWB) technology is a wireless carrier communication technology. For example, in UWB technology, data can be transmitted through narrow, non-sinusoidal pulses at the nanosecond level. Therefore, a wide spectral range is occupied. Because UWB has narrow pulses and low radiated spectral density, it offers advantages such as high multipath resolution, low power consumption, and high security. With the introduction of ultra-wideband technology into the consumer sector, ultra-wideband wireless communication has become one of the physical layer technologies for short-range high-speed wireless networks, and is mainly applied to sensing and ranging scenarios. The Institute of Electrical and Electronics Engineers (IEEE) has incorporated UWB technology into its IEEE 802 series of wireless standards and has released the high-speed wireless personal area network (WPAN) standards IEEE 802.15.4a and its advanced version, IEEE 802.15.4z, which are based on UWB technology. The next-generation UWB wireless personal area network (WPAN) standard, 802.15.4ab, is currently under discussion. In UWB technology, data is transmitted by sending and receiving extremely narrow pulses of less than nanoseconds, requiring high time synchronization between the transmitting and receiving devices. Furthermore, due to the wide communication bandwidth of UWB technology, transmitting and receiving signals over ultra-wideband channels results in high power consumption and increased device complexity. However, most UWB-based communication devices need to be battery-powered. Therefore, next-generation UWB wireless personal area network standards are expected to further reduce the power consumption of UWB systems. Thus, in next-generation UWB wireless personal area network standards, all signals except reference signals for ranging and sensing are expected to be received and transmitted through narrowband (NB) systems using narrowband signal-assisted methods, thereby reducing the power consumption overhead of UWB systems. Currently, narrowband signals used to support UWB may have multiple physical layer configurations, and there are no specific instructions regarding different physical layer configurations. This is a diagram showing the structure of a wireless communication system according to one embodiment of the present invention.This is a diagram of another structure of a wireless communication system according to one embodiment of the present invention.This is a diagram showing the PPDU format of an O-QPSK signal according to one embodiment of the present invention.This is a diagram of the format of an SFD field according to one embodiment of the present invention.5a is a diagram of the format of the PHR field according to one embodiment of the present invention. 5b is a diagram of another format of the PHR field according to one embodiment of the present invention.This is a diagram showing the modulation and diffusion procedure according to one embodiment of the present invention.This is a schematic flowchart of a method for specifying the physical layer configuration according to one embodiment of the present invention.This figure shows a simulation of the symbol error rate of SFD symbols and payload symbols according to one embodiment of the present invention.This is another figure illustrating a simulation of the symbol error rate of SFD symbols and payload symbols according to one embodiment of the present invention.This is another schematic flowchart of a method for specifying the physical layer configuration according to one embodiment of the present invention.11a is a diagram of yet another format of the PHR field according to one embodiment of the present application. 11b is a schematic diagram of yet another format of the PHR field according to one embodiment of the present application.This is a diagram showing the configuration of a communication device according to one embodiment of the present invention.This is a diagram showing the configuration of a communication device 1000 according to one embodiment of the present invention.This is a diagram showing another structure of a communication device according to one embodiment of the present invention. The technical solutions in the embodiments of this application will be clearly described below with reference to the accompanying drawings. In this description, words such as “first” and “second” are used merely to distinguish different subjects and do not limit the quantity or order of execution. Furthermore, words such as “first” and “second” do not indicate a clear distinction. In addition, terms such as “includes” and “has,” and any other variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device comprising a series of steps or un