Method for terminal random access to cellular wireless communication system and group identifier generation method

A random access, cellular wireless technology, applied in wireless communication, radio/induction link selection arrangement, communication between multiple stations, etc. Computing group identification and other issues

CN101128063AActive Publication Date: 2008-02-20ZTE CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2008-02-20

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Abstract

The utility model relates to a method for random access of terminal to cellular wireless communication system and creating group identifier, comprising following steps: a random time slot with a terminal in a wireless frame sends random access fronting information to a base station; the base station combines location information in the random time slot of the wireless frame and a frequency domain into a group identifier, adds the group identifier with a individual identifier into responding information, and sends the information to the terminal; the terminal judges if the group identifier and the individual identifier of random receiving information are expected value, if does, the terminal sends information and message to the base station on the uplink wireless resource. The utility model has the advantages that the group identifier that the random access responding information can be identified without SFN reading, which is important for random access during switching process, and the method is available for any configuration of the random access time slot.
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Description

technical field

[0001] The invention relates to a cellular wireless communication system, in particular to a method for a terminal to randomly access the cellular wireless communication system and a method for generating a group identifier. Background technique

[0002] As shown in Figure 1, the cellular wireless communication system is mainly composed of terminals, base stations and core network. A network composed of base stations is called a radio access network (Radio Access Network, RAN), and is responsible for access layer affairs, such as management of radio resources. There may be physical or logical connections between base stations according to actual conditions, such as base station 1 and base station 2 or base station 3 in FIG. 1 . Each base station can be connected to one or more core network nodes (Core Network, CN). The core network is responsible for non-access stratum affairs, such as location updates, and is the anchor of the user plane. A terminal refer...

Examples

Embodiment 01

[0065] Embodiment 01: Type 1 frame structure, applied in FDD, the random access slot period is 10ms or more, such as 20ms

[0066] The relative serial number of position T=0

[0067] RA-RNTI=0,16

[0068] The absolute number of position T = the subframe number where the random access slot is located, such as 0 or 5 or 9 RA-RNTI = (0, 16) or (5, 21), or (9, 25)

Embodiment 02

[0069] Embodiment 02: Type 1 frame structure, applied in FDD, the random access slot period is 5ms Relative sequence number of position T=0,1

[0070] RA-RNTI=0, 1, 16, 17

[0071] The absolute number of position T = the subframe number where the random access slot is located, such as (0, 5) or (1, 6) or (2, 7) or (3, 8) or (4, 9)

[0072] RA-RNTI=(0, 5, 16, 21) or (1, 6, 17, 22) or (2, 7, 18, 23) or (3, 8, 19, 24) or (4, 9, 20 , 25)

Embodiment 03

[0073] Embodiment 03: Type 1 frame structure, applied to FDD, the random access slot period is 1 ms Relative sequence number of position T = 0, 1, 2, 3, 4, 5, 6, 7, 8, 9

[0074] RA-RNTI=0~9, 16~25

[0075] Absolute number of position T = 0, 1, 2, 3, 4, 5, 6, 7, 8, 9

[0076] RA-RNTI=0~9, 16~25