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Method of controlling aggregate searching dispatching of CDMA communication

A CDMA communication and collection technology, applied in the field of control collection search and scheduling

Inactive Publication Date: 2009-07-29
ZHEJIANG HUALI COMM TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Soft handover can only be used when adjacent CDMA bands have the same frequency allocation, it has the difference of forward traffic channel and backward traffic channel at the base station boundary

Method used

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  • Method of controlling aggregate searching dispatching of CDMA communication
  • Method of controlling aggregate searching dispatching of CDMA communication

Examples

Experimental program
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Embodiment Construction

[0017] figure 1 The architecture of an example search system is described. Mcontroller enables the search hardware to search a certain PN offset window with a specified precision (1 / 4 data block offset in the example system), and returns the specified maximum number (4 in the example system) of the highest energy in the corresponding control channel The sum of the energies of several multipaths.

[0018] The search schedule contains combinations that specify the order in which the active set, candidate set, neighbor set, and other sets are searched; it also specifies the number of channels to be searched in each set within a given period of time. An example of a search combination is: AACNNNNR, which means that in a given search cycle, 2 active collective control channels, 1 candidate collective control channel, 4 neighbor collective control channels and 1 other collective control channel are searched. Search combinations usually take this form, but the number of control cha...

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Abstract

The present invention relates to a method for the search scheduling of a control set for CDMA communication. The search scheduling depends on the search time of the control channels in the set, the number of control channels in the set and the strength of these channels. A given control channel is usually at several received at time offsets, each offset is associated with a control channel multipath, for each control channel search its range should be a PN offset range (search window), in which all multipaths found in the window The energy is added to form the energy measure of the control channel. The network provides the size of the search window in the system parameter information. SRCH_WIN_A defines the window width of the active set and the candidate set, and SRCH_WIN_N defines the window width of the neighbor set.

Description

Technical field: [0001] The invention relates to a control set search scheduling method for CDMA communication, which belongs to the field of mobile communication manufacturing. Background technique: [0002] In the CDMA 1 and CDMA2000 standards, each base station continuously sends non-data-modulated direct-sequence signals in the control channel. This signal is composed of a data block stream (CHIP), and the maximum length of each data block is a PN (pseudo-noise) sequence (the period of each sequence is 2 15 ), the control channel is identified by a length interval of 64 data blocks compared with the 0 offset control (PN) sequence. In addition to providing a reference phase for coherent demodulation, the control signal can also enable the mobile station (terminal) to obtain and maintain the previous To the timing of the data link, and to judge the strength of the base station signal to switch in a timely manner. [0003] In the above-mentioned CDMA standard, soft / hard h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J13/02H04B7/26H04W74/04
Inventor 汪力成高东杨
Owner ZHEJIANG HUALI COMM TECH
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