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Indicating and receiving method of bandwidth segment of straight-through link and terminal

A receiving method and bandwidth technology, applied in the field of communication, can solve problems such as high signaling overhead

Active Publication Date: 2021-03-26
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

16-bit BWP configuration will bring very high signaling overhead to the terminal

Method used

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  • Indicating and receiving method of bandwidth segment of straight-through link and terminal
  • Indicating and receiving method of bandwidth segment of straight-through link and terminal
  • Indicating and receiving method of bandwidth segment of straight-through link and terminal

Examples

Experimental program
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Effect test

no. 1 example

[0156] The first embodiment: SL-BWP start position pre-configuration; the bandwidth information of SL-BWP is notified through PSBCH:

[0157] A method for sending a signal, applied to a terminal, the method comprising:

[0158] In the time slot, the through-link synchronization signal block S-SSB is sent; the S-SSB includes the through-link physical broadcast channel PSBCH and other information. The PSBCH carries direct link bandwidth segment (SL-BWP) information, and the SL-BWP information includes location information and / or bandwidth information of the SL-BWP.

[0159] The position information of the SL-BWP includes: the relative position of the SL-BWP and the S-SSB or reference point A, the reference point A refers to the center position of the subcarrier number 0 of CRB0 of the carrier in the new wireless NR system .

[0160] The relative position of the SL-BWP and S-SSB or reference point A includes one of the following:

[0161] 1) The S-SSB is located at the highest f...

no. 2 example

[0179] Second embodiment: SL-BWP starting position and bandwidth are notified by PSBCH:

[0180] A method for sending a signal, applied to a terminal, the method comprising:

[0181] In the time slot, the through-link synchronization signal block S-SSB is sent; the S-SSB includes the through-link physical broadcast channel PSBCH and other information. The PSBCH carries the information of the direct link bandwidth segment (SL-BWP), including the starting position and bandwidth information of the SL-BWP.

[0182] The starting position of the SL-BWP is in the form of "relative position offset with S-SSB or Point A", and at least one of "relative position offset and / or bandwidth information" is represented in PSBCH Notified in the form of bits.

[0183] The relative position offset of SL-BWP and S-SSB: refers to the number of offset RBs between the starting position of SL-BWP relative to the starting position or middle position of S-SSB or other positions;

[0184] The relative...

no. 3 example

[0191] The third embodiment, predefined table:

[0192] A method for sending a signal, applied to a terminal, the method comprising:

[0193] In the time slot, the through-link synchronization signal block S-SSB is sent; the S-SSB includes the through-link physical broadcast channel PSBCH and other information. The PSBCH carries the information of the direct link bandwidth segment (SL-BWP), including the starting position and bandwidth information of the SL-BWP.

[0194] The starting position and / or bandwidth information of the SL-BWP is carried by the PSBCH in the form of N bits (N≥1), and each possible value of the N bits corresponds to at least one row in at least one predefined table , a row in the predefined table represents a combination of SL-BWP start position and bandwidth information.

[0195] Scheme 1: N=4, 16 combinations of SL-BWP start position and bandwidth information:

[0196]

[0197]

[0198] For example: when N=4 bits are 0110, Index=6, as can be s...

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Abstract

The invention discloses a method for indicating and receiving a bandwidth segment of a straight-through link, and a terminal. The indication method of the bandwidth segment of the straight-through link comprises the following steps: sending a straight-through link synchronization signal block SSSB in a time slot, wherein the SSSB comprises a straight-through link physical broadcast channel PSBCH,straight-through link bandwidth segment SLBWP information is configured in a pre-configuration mode or through the PSBCH, and the SLBWP information comprises position information and / or bandwidth information of the SLBWP. According to the scheme provided by the invention, the configuration information of the SLBWP can be indicated in the PSBCH, so that the signaling overhead of the broadcast channel is reduced, the flexibility of SLBWP configuration is improved, and the transmission efficiency of SLBWP communication is further improved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to an indication, a receiving method and a terminal of a bandwidth segment of a direct link. Background technique [0002] In the existing LTE V2X technology, the terminal must first complete the synchronization process of the direct link before performing the direct link Sidelink communication. The main purpose of the synchronization process is to align the time-frequency resources of the sending end and the receiving end (the time domain is Alignment; frequency domain is subcarrier alignment), and the basic parameters of communication between the sender and receiver, including communication bandwidth information. In LTE V2X, the bandwidth used by user communication is only 6 configurations, including 1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz, and 20MHz. Therefore, 3 bits are used in PSBCH (Physical Direct Link Broadcast Channel) of LTE V2X to represent The above 6 configura...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W76/14H04W28/20H04W76/40H04L5/00
CPCH04W76/14H04W28/20H04W76/40H04L5/0053H04L5/0064
Inventor 任晓涛赵锐
Owner DATANG MOBILE COMM EQUIP CO LTD
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