Method, system and device for allocating and measuring gap

A technology of configuration measurement and gap, applied in the field of communication, can solve the problems of inconsistent configuration, confusion, and the inability of the base station to identify the terminal, so as to avoid confusion.

Inactive Publication Date: 2010-02-17
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] However, the inventors found that, see figure 1 , due to the periodicity of SFN, so when there is SFN cycle around (period around refers to SFN incremented from 0 to 1023, and then returns to 0, 1... until 1023, and so on), when the terminal analyzes the obtained startSFN, it will Causes errors, resulting in inconsistent gap configurations used by the base station of the target cell and the terminal, causing confusion. For example, the terminal reads that the SFN of the target cell is 2, and the configured activation time startSFN=1022. At this time, the terminal can be regarded as the previous SFN The 1022 of the cycle, that is, the gap measurement needs to be started now, or it ca

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  • Method, system and device for allocating and measuring gap
  • Method, system and device for allocating and measuring gap

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Embodiment 1

[0074] The embodiment of the present invention provides a method for configuring a measurement gap, by setting an effective configuration range for the activation time startSFN of the gap gap, thereby solving the problem of confusion due to inconsistent gap configurations used by the base station side of the target cell and the terminal, In particular, aiming at the phenomenon of SFN cycle wrapping in the prior art, the terminal's misunderstanding of the gap activation time startSFN is effectively overcome. The content of the method is as follows: the terminal obtains the gap activation time startSFN set by the target cell; obtains the target cell Calculate the time when the target cell receives the handover request from the time of the system frame number SFN and the time used for handover; obtain the execution range of startSFN according to the time when the target cell receives the handover request and the effective configuration range of startSFN, where the execution range i...

Embodiment 2

[0118] The embodiment of the present invention provides a method for configuring a measurement gap. Before the terminal performs gap-based measurement in the target cell, it needs to know the current SFN of the target cell, so as to achieve the purpose of synchronizing the startSFN of the gap-based activation time between the terminal and the target cell. Otherwise, the terminal cannot determine in which frame the gap is located according to the acquired activation time startSFN of the gap.

[0119] If the terminal wants to perform gap-based measurement during (or after) handover, it needs to specify the time point when the terminal finally obtains the SFN of the target cell, that is, the terminal can obtain the SFN of the target cell in advance for the last time point, but cannot Finally click to obtain the SFN of the target cell. In order to achieve the goal that the target cell and the terminal can maintain a unified action, wherein,

[0120] Set the final cut-off time for...

Embodiment 3

[0133] The embodiment of the present invention provides a method for configuring a measurement gap. After the terminal obtains the current SFN of the target cell, it needs to set the gap activation time startSFN of the terminal.

[0134] Wherein, due to the gap set by the source cell during the handover process (corresponding to when the target cell does not set the gap information for the terminal, the terminal continues to use the gap information set by the source cell) and the gap set by the target cell, when the time of the above settings is compared When it is early (before the switch is completed), the following problems will exist:

[0135] First of all, the execution priority of the handover process is generally higher than that of the gap-based measurement, because if the terminal prioritizes the gap-based measurement, the handover may not be completed in time, and the handover time cannot be accurately predicted , especially in the contention-based random access RA p...

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Abstract

The embodiment of the invention discloses a method, a system and a device for allocating and measuring a gap, and belongs to the field of communication. The method comprises the following steps: utilizing a terminal to acquire the moment of a system frame number SFN of a target cell, switchover time, gap activation time startSFN set by the target cell and the effective allocation range of the startSFN; acquiring an execution range of the startSFN according to the moment when the target cell receives a switchover request and the effective allocation range of the startSFN which are acquired through calculation; and judging whether the acquired startSFN is in the execution range or not, and if the acquired startSFN is in the enforcement range, executing the measurement based on the gap. The system comprises the terminal and a base station. The device comprises an acquisition module, a judgment module and an execution module. Through various modes, such as arranging the effective allocation range for the gap activation time startSFN, arranging the final expiration time that the terminal acquires the system frame number SFN of the target cell, setting the restart time point of executingthe measurement based on the gap, arranging the time of taking effect again of executing the measurement based on the gap and the like, the method, the system and the device achieve that the terminaland the target cell are consistent for executing the measurement based on the gap so as to avoid confusion.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method, system and equipment for configuring measurement gaps. Background technique [0002] In the UMTS (Universal Mobile Telecommunications System, Universal Mobile Communications System) system, during the handover process of the terminal from the source cell to the target cell, the target cell will re-deliver measurement configuration information. Therefore, the measurement configuration previously delivered by the source cell will be no longer valid. However, in the current LTE (Long Term Evolve, long-term evolution system), the above-mentioned measurement configuration issued by the source cell can continue to be valid. In addition, the target cell can issue the measurement configuration information to the terminal before the terminal performs handover through a handover command , so that the terminal can perform the configuration measurement of the target cell after re...

Claims

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Application Information

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IPC IPC(8): H04Q7/34H04B17/00
Inventor 谢明江黄敏
Owner HUAWEI TECH CO LTD
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