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Resending method and device of random access signaling

A random access and retransmission technology, applied in the field of communication, can solve the problem of low access quality

Inactive Publication Date: 2016-11-23
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] In the related art, the access quality of the user terminal accessing the LTE / LTE-A system is not high, and no effective solution has been proposed so far. The present invention provides a method and device for resending random access signaling to at least solve the above problems

Method used

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  • Resending method and device of random access signaling

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Experimental program
Comparison scheme
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Embodiment 1

[0322] There are MTC UEs in the LTE system, and the MTC UEs can support coverage enhancement (Coverage Enhancement, CE). In this embodiment, Msg1 supports three coverage enhancement levels (Coverage Enhancement level, CEL), that is, CEL0, CEL1 and CEL2. In addition, UE1 and UE2 are MTC UEs of CEL0. The base station (eNB) allocates PRACH resources for the MTC UEs of each CEL, including the random access sequence (Preamble) used for sending random access signaling, the subframe (Subframe) and the physical resource block (PRB) used for sending the Preamble. The number of repeated transmissions of Msg1 corresponding to different CELs is different, and UE1 and UE2 send random access signaling (Msg1) on the PRACH channel of CEL0 according to the eNB configuration information;

[0323] The eNB sends a Msg2 message in response to the Msg1 message of the CEL0 level, but Msg2 only includes the random access response information of UE2, and the Msg1 sent by UE1 has not been successfully...

Embodiment 2

[0333] There are MTC UEs in the LTE system, and the MTC UEs can support coverage enhancement (Coverage Enhancement, CE). In this embodiment, Msg1 supports three coverage enhancement levels (Coverage Enhancement level, CEL), that is, CEL0, CEL1 and CEL2. And UE1, UE2, and UE3 are MTC UEs of CEL0. The base station (eNB) allocates PRACH resources for the MTC UEs of each CEL, including the random access sequence (Preamble) used for sending random access signaling, the subframe (Subframe) and the physical resource block (PRB) used for sending the Preamble. The number of repeated transmissions of Msg1 corresponding to different CELs is different. UE1, UE2, and UE3 send random access signaling (Msg1) on the PRACH channel of CEL0 according to the configuration information of eNB;

[0334] The eNB sends a Msg2 message in response to the Msg1 message of the CEL0 level, but Msg2 only includes the random access response information of UE2,

[0335] In this embodiment, UE1 fails to decod...

Embodiment 3

[0356] There are MTC UEs in the LTE system, and the MTC UEs can support coverage enhancement (Coverage Enhancement, CE). In this embodiment, Msg1 supports three coverage enhancement levels (Coverage Enhancement level, CEL), that is, CEL0, CEL1 and CEL2. In addition, UE1, UE2, and UE3 are MTC UEs of CEL0, and UE4 is an MTC UE of CEL1. The base station (eNB) allocates PRACH resources for the MTC UEs of each CEL, including the random access sequence (Preamble) used for sending random access signaling, the subframe (Subframe) and the physical resource block (PRB) used for sending the Preamble. The number of repeated transmissions of Msg1 corresponding to different CELs is different. UE1, UE2, and UE3 send random access signaling (Msg1) on the PRACH channel of CEL0 according to the eNB configuration information; UE4 sends it on the PRACH channel of CEL1 according to the eNB configuration information Random access signaling (Msg1);

[0357] The eNB sends a Msg2 message in response...

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Abstract

The invention provides a resending method and device of a random access signaling. According to the method, a second type of node resends the random access signaling Msg1 under the first condition, the problem that the quality of accessing an LTE / LTE-A system of a user terminal is not high is solved, and the quality of accessing the LTE / LTE-A system of the user terminal is improved.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and device for resending random access signaling. Background technique [0002] Machine Type Communication (MTC for short) User Equipment (MTC UE for short), also known as Machine to Machine (M2M for short) 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 for short) system. In recent years, due to the improvement of spectrum efficiency of Long Term Evolution (referred to as LTE) / LTE-A (subsequent evolution of LTE), more and more mobile operators choose LTE / LTE-A as the future broadband wireless communication The evolution direction of the system. M2M multi-type data services based on LTE / LTE-A will also be more attr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W74/08
CPCH04W74/0833H04L1/08H04W74/08H04W4/70H04W28/04
Inventor 刘锟戴博鲁照华夏树强陈宪明石靖张雯方惠英
Owner ZTE CORP
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