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Random access sequence transmission method and device

A technology of random access sequence and transmission method, applied in the field of random access sequence transmission method and device

Active Publication Date: 2014-12-03
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The present invention provides a random access sequence transmission method and device, which solves the problem of ensuring that the random access signaling sent by the MTC UE in a harsh environment can be correctly detected by the eNB

Method used

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  • Random access sequence transmission method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0157] There are MTC UEs and non-MTC UEs in the wireless system, and the MTC UEs are divided into S1 sets according to predefined rules.

[0158] The predefined rule is: the coverage enhancement target value of the random access channel is divided into S1 value intervals, and the MTC UEs determine the set to which they belong according to the interval segment where the coverage enhancement target value of the random access channel needs to be supported .

[0159]The maximum coverage enhanced target value (Max Coverage Enhanced Target, Max CET) of PRACH is 15dB, and the MTC UEs are divided into 4 (S1=4) sets, also called 4 coverage enhanced levels (Coverage Enhanced Level, CEL), for example , CET=0dB of PRACH for MTC UEs of CEL0; 0dB<CET<=5dB of PRACH of MTC UEs of CEL1; 5dB<CET<=10dB of PRACH of MTC UEs of CEL2; 10dB<CET of PRACH of MTC UEs of CEL3 <=15dB.

[0160] The random access channel configuration message includes random access channel resource configuration informati...

Embodiment 2

[0180] There are MTC UEs and non-MTC UEs in the wireless system.

[0181] First, the MTC UEs are divided into J sets according to the first predefined rule, and each set is defined as P(j), where 0≤j≤J-1, and J is a positive integer greater than or equal to 1.

[0182] The first predefined rule is:

[0183] The number of times that the Secondary Synchronous Signal (SSS) needs to be repeatedly sent is divided into J value intervals, and the MTC UE determines the set P(j) it should belong to according to the interval segment where the SSS repetition times are located when the SSS is successfully decoded .

[0184] Then, when the MTC UEs successfully decode the SSS, the repetition times of the SSS is less than the subset P(j) of the predefined threshold value, and the MTC UEs in the above P(j) are divided into Q(j) according to the second predefined rule ) subsets, each subset defines P(j,q); Q(j) is the number of subsets that need to be divided into the set P(j), Q(j)≥1, 0≤q≤Q...

Embodiment 3

[0218] There are MTC UEs and non-MTC UEs in the wireless system, and the MTC UEs are divided into S1 sets according to predefined rules.

[0219] The predefined rule is: the coverage enhancement target value of the random access channel is divided into S1 value intervals, and the MTC UEs determine the set to which they belong according to the interval segment where the coverage enhancement target value of the random access channel needs to be supported .

[0220] The maximum coverage enhanced target value (Max Coverage Enhanced Target, Max CET) of PRACH is 15dB, and the MTC UEs are divided into 4 (S1=4) sets, also called 4 coverage enhanced levels (Coverage Enhanced Level, CEL).

[0221] In this embodiment, MTC UEs can obtain at least one of the following information after decoding the random access channel resource configuration information:

[0222] PRACH resource configuration period;

[0223] In the configuration period, the configuration information of the physical reso...

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Abstract

The invention provides a random access sequence transmission method and device, relates to the communication field, and helps to solve the problem that random access signaling sent by MTC UE in a hostile environment can be guaranteed be correctly detected by eNB. The method comprises a first node sends a random access channel configuration message, wherein the random access channel configuration message at least comprises random access channel resource configuration information of a third node. According to the technical scheme provided in the invention, the random access sequence transmission method and device are suitable for M2M services in an LTE system, and higher MTC UE random access performance is realized.

Description

technical field [0001] The present invention relates to the communication field, in particular to a random access sequence transmission method and device. Background technique [0002] Machine Type Communication (MTC) User Equipment (MTC UE), also known as Machine to Machine (M2M) user communication equipment, is the main application form of the Internet of Things at this stage. Low power consumption and low cost are important guarantees for its large-scale application. M2M devices currently deployed in the market are mainly based on the Global System of Mobile communication (GSM) system. In recent years, due to the improvement of spectrum efficiency of Long Term Evolution (LTE) / LTE-A (subsequent evolution of LTE), more and more mobile operators choose LTE / LTE-A as the future broadband wireless communication system. direction of evolution. M2M multi-type data services based on LTE / LTE-A will also be more attractive. Only when the cost of LTE-M2M equipment can be lower th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04W74/08
CPCH04W74/0833H04W74/006
Inventor 刘锟戴博鲁照华夏树强方惠英石靖李新彩
Owner ZTE CORP
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