Realizing method and system for cell group with same pseudorandom noise (PN) based on code division multiple access (CDMA) cluster system
A technology of a trunking system and an implementation method, which is applied in the directions of broadcast service distribution, connection management, network topology, etc., can solve the problem of high switching frequency of the code division multiple access trunking service system, easy call drop, and inability to support the code division multiple access trunking service. and other problems to achieve the effect of reducing the frequency of system switching and avoiding dropped calls
Active Publication Date: 2014-12-10
HUAWEI TEHCHNOLOGIES CO LTD
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Problems solved by technology
Due to the differences between trunking services and ordinary voice services in terms of physical channel establishment methods, the existing method of using the same PN in adjacent cells of ordinary voice services cannot support CDMA trunking services, that is, when the cell radius is small and the terminal moves In scenarios such as high speed, CDMA trunking services still have problems such as high system switching frequency and easy call drop
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[0033] The basic idea of the present invention is that the base station system configures the same PN cell group, and when the terminal initiates a cluster call in the same PN cell, the sectors involved in all users corresponding to the cluster call are concentrated in the same PN cell, and the same PN cell is already in the same PN cell. If the PN cell group establishes channel resources, the base station system maintains the cluster call; the sectors involved in all users corresponding to the cluster call are concentrated in the same PN cell, and the base station system does not establish channel resources for the same PN cell group, then the base station system is The same PN cell group establishes channel resources and maintains a cluster call.
[0034] The implementation of the technical solution will be described in further detail below in conjunction with the accompanying drawings.
[0035] figure 1 It is a schematic flow diagram of the implementation method of the same PN...
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The invention discloses a realizing method for a cell group with same pseudorandom noise (PN) based on a code division multiple access (CDMA) cluster system. In the realizing method, a terminal initiates cluster calling under cells with the same PN; a base station system judges whether sectors related to all the users corresponding to the cluster calling intensively are centralized in the same PN cell, and the base station system constructs channel resource for the cell group with the same PN, then the base station keeps the cluster calling; and the base station system judges whether the sectors related to all the users corresponding to the cluster calling intensively are centralized in the same PN cell, and the base station system does not construct channel resource for the cell with the same PN, and then the base station system constructs channel resource for the cell group of the same PN and keeps the cluster calling. The invention also discloses a realizing system for the cell group with the same PN. Because the same PN cell technology is used for the CDMA, the system switching frequency of the CDMA cluster service is reduced and the call drop is avoided.
Description
Technical field [0001] The present invention relates to the field of co-code division multiple access cluster systems, in particular to a method and system for realizing CDMA2000 (Code Division Multiple Access, code division multiple access cluster system) 1x same PN (Pseudorandom Noise) cell group. Background technique [0002] In the CDMA20001x wireless cellular system, adjacent cells are distinguished by transmitting different offset PN short codes on the forward pilot channel. When the terminal traverses the coverage of different cells, it will switch due to changes in signal strength. In some special application scenarios, such as small cell radius and fast terminal movement, the terminal making a call may frequently switch , And the increase in the number of handovers, especially handovers under high-speed conditions, is prone to dropped calls. Macroscopically, it will increase the call drop rate of the base station and decrease the stability of the system. In this regard...
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IPC IPC(8): H04W4/06H04W76/02H04W84/08
Inventor 曹金波
Owner HUAWEI TEHCHNOLOGIES CO LTD