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TBS determination method and related equipment

A deterministic method and a predefined technology, which can be applied in transmission path sub-channel allocation, digital transmission system, signaling allocation, etc., can solve the problem of low data reliability and achieve the effect of improving reliability

Active Publication Date: 2021-10-12
VIVO MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a TBS determination method and related equipment to solve the current problem of low reliability of data transmission by terminals through side links

Method used

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  • TBS determination method and related equipment
  • TBS determination method and related equipment
  • TBS determination method and related equipment

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0124] The protocol predefines the format of the second-level SCI, the relationship between the fixed code point in the first-level SCI or the transmission type of the second-level SCI and the reference resource overhead value REs (that is, the second mapping relationship), and the corresponding overhead value, specifically as follows:

[0125] If the above parameter (that is, the third parameter) indicates that the second-level SCI can be used to schedule groupcast type 1, then its resource overhead is defined as N1 REs.

[0126] If the above parameters indicate that the second-level SCI can be used to schedule unicast or groupcast type2, then its resource overhead is defined as N2 REs.

[0127] If the above parameters indicate that the second-level SCI can be used to schedule broadcast, its resource overhead is defined as N3REs.

[0128] If the sending end (that is, the terminal) schedules a unicast data packet transmission, the sending end obtains the reference resource ov...

example 2

[0132] The protocol predefines the relationship between the format of the second-level SCI and the reference resource overhead value REs of the second-level SCI, and the protocol predefines the relationship between the format of the second-level SCI and the reference resource overhead value REs of the CSI-RS, and the corresponding overhead value ,details as follows:

[0133] If the format of the second-level SCI indicates that the second-level SCI can be used to schedule groupcast type 1, the resource overhead of the second-level SCI is defined as N1 REs, and the resource overhead of the CSI-RS is 0;

[0134] If the format of the second-level SCI indicates that the second-level SCI can be used to schedule unicast, then the resource overhead of the second-level SCI is defined as N2 REs, and the resource overhead of the CSI-RS is defined as Ncsi REs;

[0135] If the format of the second-level SCI indicates that the second-level SCI can be used to schedule broadcast, the resource...

example 3

[0140] The protocol is pre-defined, and the reference resource overhead of the second-level SCI is calculated according to the beta value and the reference TBS.

[0141] Among them, the beta value is the value indicated in the first-level SCI, and the reference TBS is based on the formula Q m ·R·N symb ·N PRB ·N SC (that is, the above formula (2)) is calculated, and the relevant parameters are defined as follows:

[0142] Q m and R are obtained according to the MCS indicated in the first-level SCI;

[0143] N symb Determined according to the overhead of the assumed PSFCH, that is, the number of symbols of the PSSCH minus the overhead of the referenced PSFCH;

[0144] N PRB is the size of the frequency domain resource indicated in the first-level SCI;

[0145] N SC is the number of subcarriers in each PRB, for example, N SC for 12.

[0146] Then, according to the number of referenced DMRS resources (ie, the reference resource overhead of the DMRS), the number of reso...

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Abstract

The invention provides a TBS determination method and related equipment. The method comprises the following steps: determining a first reference resource overhead; and determining a first transport block size (TBS) according to the first reference resource overhead, the first reference resource overhead comprising a reference resource overhead of second-level sidelink control information (SCI) and / or a reference resource overhead of a channel state information reference signal (CSI-RS). According to the method for determining the TBS provided by the invention, a terminal can determine the first reference resource overhead for determining the TBS, so that it can be ensured that the initially transmitted TBS and the re-transmitted TBS are the same, the terminal can perform data merging, and the reliability of data transmission of the terminal is improved.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method for determining TBS and related equipment. Background technique [0002] In a wireless communication system, a terminal can directly perform data transmission with other terminals through a sidelink (sidelink, also called a secondary link, side link, or side link, etc.), without going through network-side equipment (such as a base station, etc.) ). For example, in the Internet of Vehicles system, the vehicle's intelligent on-board equipment can transmit data with terminals used by roadside pedestrians or other vehicles' intelligent on-board equipment through side links, and so on. [0003] Wherein, during the data transmission process between the terminal and the receiving end through the side link, for example, data is transmitted on the side link supporting Hybrid Automatic Repeat reQuest (HARQ), if the initial data transmission fails (that is, ...

Claims

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Application Information

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IPC IPC(8): H04L5/00
CPCH04L5/0053H04L5/00
Inventor 彭淑燕纪子超
Owner VIVO MOBILE COMM CO LTD
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