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Method for processing conflict of random access process and measurement clearance

A technique for random access process and gap measurement, applied in communication, transmission monitoring, electrical components, etc. Process and when to restart, etc., to reduce the probability of failure, reduce delay, and improve reliability

Active Publication Date: 2010-02-10
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the preliminary consensus discussed in 3GPP on this issue is that the priority of the random access process should be higher than the measurement gap. If the terminal initiates the random access process and a conflict occurs, the measurement gap will be canceled, but there is no further specific solution. For example, in The specific behavior of each step of the random access process, the method of canceling the measurement gap, the timing (for example, whether each step of the random access process and between steps need to cancel the measurement gap), time range (applicable to a random access attempt It is still a random access process and when to restart the measurement gap, including the processing of the delay value Backoff period, etc.) and the synchronization between the terminal and the base station, etc.

Method used

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  • Method for processing conflict of random access process and measurement clearance
  • Method for processing conflict of random access process and measurement clearance

Examples

Experimental program
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Effect test

Embodiment 1

[0067] For non-contention-based random access procedures, if there is overlap with the measurement gap within the random access response window, the terminal cancels the measurement gap.

[0068] For the contention-based random access process, if there is an overlap with the measurement gap within the random access response window, the terminal cancels the measurement gap; if there is an overlap with the measurement gap when the contention resolution timer is running, the terminal cancels the measurement gap.

[0069] like image 3 As shown, the length of the measurement gap is 6ms, and its period is 40ms. The random access preamble is sent 2 ms before the measurement gap, and the length of the random access response window is configured as 10 ms, thus conflicting with the measurement gap. In this case, the terminal cancels the measurement gap, that is, in image 3 The measurement gap marked as (1) in is cancelled, so as to solve the random access process failure or large de...

Embodiment 2

[0074] For the contention-based random access process, if the measurement gap is configured, the terminal will keep the measurement gap between the success of receiving the random access response and the scheduled transmission if there is an overlap with the measurement gap, and the scheduled transmission will be in the measurement gap Send after the end, that is, if the sending timing of the scheduled transmission overlaps with the measurement gap, it is allowed to delay the sending timing of the scheduled transmission appropriately to after the measurement gap.

[0075] like Figure 5 As shown, the length of the measurement gap is 6ms and the period is 40ms. For the random access process based on contention, the length of the random access response window is configured as 10ms, but the terminal receives the random access response message during the random access response window and terminates the monitoring of the PDCCH in advance; The processing time gap is greater than or...

Embodiment 3

[0079] If the terminal is configured with a measurement gap, during the random access process, the terminal will keep the measurement gap if the idle time between two adjacent random access attempts overlaps with the measurement gap. If the idle time between two adjacent random access attempts (including during the delay value) of the terminal in the random access process can completely cover the duration of the measurement gap, the measurement gap is valid; if the duration of the measurement gap will exceed At the moment of the next random access attempt, the measurement gap is valid and the terminal sends the random access preamble after delaying the measurement gap.

[0080] The so-called "idle time between two adjacent random access attempts" includes at least the following scenarios: the reception of the random access response message fails, and the terminal decides according to the delay value when the maximum number of random access preamble transmissions has not been re...

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PUM

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Abstract

The invention provides a method for processing conflict of a random access process and a measurement clearance, and relates to a terminal and a base station. The terminal is allocated with the measurement clearance; and the method comprises that: when the time period of the random access process is overlapped with the measurement clearance and can influence random access success, the terminal cancels the measurement clearance; or the terminal keeps the measurement clearance in the time period which is overlapped with the measurement clearance in the random access process and cannot influence the random access. The solution that the random access process priority is higher than the measurement clearance priority in the method improves the reliability of the random access process, reduces the failure probability of the random access process, reduces the delay of the random access process and takes the effective utilization of the measurement clearance into consideration.

Description

technical field [0001] The present invention relates to a processing method of a random access process in a digital mobile communication system, in particular to a processing method when a random access process and a measurement gap conflict in a wireless communication system. Background technique [0002] In a wireless cellular communication system, the Random Access Procedure (Random Access Procedure) is used for a terminal (or called user equipment UE, User Equipment) in the idle state (RRC_IDLE) to initially access the network, or a terminal in the connected state (RRC_CONNECTED) and the network Synchronize and obtain resource allocation for subsequent data communication. [0003] In the third-generation mobile communication Long Term Evolution (LTE, Long Term Evolution) system, the following five events can trigger the random access process: (1) initial access in idle state; (2) radio link failure (RLF, Radio Link Failure ) after initial access; (3) handover (HO, Hando...

Claims

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Application Information

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IPC IPC(8): H04W74/08H04B17/00H04B7/26
CPCH04W74/08
Inventor 张健程翔
Owner ZTE CORP
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