发明名称 |
CYCLIC SHIFT DURATION SET GENERATION METHOD AND RANDOM ACCESS PREAMBLE GENERATION METHOD |
摘要 |
A Method for generation of Ncs set and a method for generation of random access preamble are disclosed. The method for generation of Ncs set comprises the following steps: determine an upper limit value Ncs_max of Ncs according to a maximum cell radius value which is required to be supported by a random access channel RACH, and select Ncs values which are less than or equal to the Ncs_max to be elements of an initial Ncs set; calculate a root sequence number Nr corresponding to each element in the initial Ncs set according to formula Nr = ”ŒM/””Npre/Ncs”˜”�; and delete elements in the initial Ncs set which have the same Nr value with other elements so as to generate a screening Ncs set in which each element has a different Nr value; if N, the number of the elements in the screening Ncs set, is greater than P, the number of maximum Ncs supported by the system, then delete N-P elements from the set so as to generate a final Ncs set; else regard the screening Ncs set as the final Ncs set; wherein, M is a preamble number required by each cell, and Npre is the length of preamble sequence. |
申请公布号 |
EP2197126(A4) |
申请公布日期 |
2014.10.22 |
申请号 |
EP20080871876 |
申请日期 |
2008.12.30 |
申请人 |
ZTE CORPORATION |
发明人 |
HAO, PENG;YU, BIN;XIA, SHUQIANG;DAI, BO;LIANG, CHUNLI |
分类号 |
H04J13/22;H04B7/26;H04J13/00;H04J13/14;H04W74/00 |
主分类号 |
H04J13/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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