Method and apparatus for measuring adjacent zone of multi-mode terminal

Abstract

The invention provides a neighbor cell measurement method of a multi-mode terminal. The method comprises the following steps: A. measuring an neighbor cell carrier power RSSI of the neighbor cells at various frequency points, meanwhile, measuring a received signal code power (RSCP) of a pilot channel in a serving cell; B. comparing the RSCP of the pilot channel in the serving cell and the RSSI of the neighbor cells, ignoring the measurement of the RSCP of the pilot channel in the neighbor cells at one frequency point when the value of the RSSI at the frequency point added with a threshold is smaller than the RSCP of the pilot channel in the serving cell, otherwise, measuring the RSCP of the pilot channel in the neighbor cells at the frequency point. The invention further provides a neighbor cell measurement device of the multi-mode terminal. By the method and the device, a plurality of neighbor cells with weak signals are effectively eliminated by comparing the relationship between the RSCP of the pilot channel in the serving cells and the neighbor cell carrier power, and the limited idle time windows are used for the measurement of the potential target cells so as to realize the measurement among systems under a high-speed service.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a method and device for measuring adjacent cells of a multi-mode terminal. Background technique [0002] In a mobile communication system, for a single-antenna multi-mode terminal, it is necessary to periodically measure all configured neighboring cells according to protocol requirements in connection mode, so as to realize service handover between different cells or cells with different access technologies. The neighbor cell measurement is mainly to measure the pilot channel (Pilot Channel) of the neighbor cell. At the same time, for systems without compressed mode, in some high-speed service situations, the idle time window for neighbor cell measurement is very small, and generally only neighbor cell measurement within the system can be completed, so it is difficult to It is required to periodically measure neighboring cells of different systems, that is, ...

AI Technical Summary

Problems solved by technology

At the same time, for systems without compressed mode, in some high-speed service situations, the idle time window for neighbor cell measurement is very small, and generally only neighbor cell measurement within the system can be completed, so it is difficult to It is required to periodically measure the adjacent cells of different systems, that is, in this case, the service handover between systems cannot be completed

For example, in the TD-SCDMA system, if the terminal is doing high-speed services, such as 2.8Mbps HSDPA (High Speed ​​Downlink Packet Access, high-speed downlink packet access) services or UL (uplink) 384kbps / DL (downlink) 384kbps services, Currently only TS0, DwPTS (Downlink Pilot Timeslot, downlink pilot time slot), GAP (guard time slot) and UpPTS (Uplink Pilot Timeslot, uplink pilot time slot) are left for inter-cell measurement, while TS0 and DwPTS generally It is used for TDD (Time Division Duplex, Time Division Duplex) neighbor cell measurement to achieve the purpose of switching in the system preferentially; in addition, if the network is configured with Timeslot ISCP (Time Slot Interference Signal Code Power) measurement, at certain relative rates In low business conditions, even if there is a business idle time window, in order to ensure the ISCP (interference signal code power) measurement cycle required by the system, the synchronization measurement of adjacent cells between systems will be frequently interrupted, or even impossible to complete

[0003] At present, there are usually two solutions to the above problems: one is not to perform inter-system measurement, and the idle time window is only used for the measurement of neighboring cells within the system, that is, not reporting the measurement results of neighboring cells of different systems or reporting the lowest measurement value; the other One is to measure carrier power (RSSI) only without cell synchronization measurement

However, neither of these two methods can or cannot effectively measure adjacent cells of different systems, thus resulting in the inability to realize inter-system handover of services in this case. Affects the quality of service of high-speed data services to a certain extent

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