Universal grouped radio service data frame signal transmitting method
A technology for signal transmission and data framing, applied in wireless communication, communication between multiple stations, radio/induction link selection and arrangement, etc., can solve the overall capacity reduction, the limitation of the Abis interface ground circuit configuration, and the waste of ground circuits resources and other issues, to achieve the effect of flexible relative position, saving ground circuit resources, and improving utilization rate
Inactive Publication Date: 2004-10-27
HUAWEI TECH CO LTD
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Problems solved by technology
[0011] 1. Waste of ground circuit resources. In the process of general packet wireless service, the base station subsystem can dynamically adjust the channel coding method adopted by the packet dedicated channel according to the wireless quality of data transmission, while the wireless quality of data transmission and the location of the mobile phone It has a lot to do with it, so it is difficult to determine in advance whether a certain packet dedicated channel adopts CS-3 or CS-4 coding mode, which brings difficulties to establish the mapping from the wireless channel of the Um interface to the terrestrial channel
If a 32K ground circuit is configured for each packet dedicated channel, it will cause a great waste of ground circuits, because in a real wireless environment, only a part of the packet dedicated channels that can use CS-3 and CS-4 coding methods at the same time ; If only 32K terrestrial circuits are configured for this part of the packet-dedicated channel, then only this part of the packet-dedicated channel can use CS-3, CS-4 encoding, and the utilization rate of the terrestrial circuit is relatively low overall
[0012] 2. The hardware of the original base station controller equipment can no longer meet the requirements. Before the introduction of general packet radio service, the base station controller only needs to support the 16K time slot switching function between the Abis interface ground circuit and the Ater interface, but now it needs to support the Abis interface ground circuit 32K circuit connection between the circuit and the processing hardware inside the base station controller / PCU to process 32K data frames
Some hardware of the original switching network cannot meet the requirements, and there may be a need for hardware upgrades, or overall capacity decline
[0013] 3. There are restrictions on the configuration of the ground circuit of the Abis interface, which is not flexible enough
When users plan the configuration of the Abis interface ground circuit, it is more complicated
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[0035] The signal transmission method between the base station and the base station controller interface of the general packet radio service of the present invention can be described as follows:
[0036] When the logical channel type of a wireless sub-slot on the Um interface is a traffic channel, the base transceiver station maps the data frame signal to be transmitted to a 16kbit / s ground circuit on the Abis interface, and each wireless block is mapped into a voice TRAU frame;
[0037] When the logical channel type of a wireless sub-slot on the Um interface is a packet dedicated channel and adopts the CS-1 / CS-2 encoding method, the base transceiver station uses the traffic channel method to map the data frame signal to be transmitted to the Abis interface One 16kbit / s ground circuit, each wireless block is mapped into a 16K data TRAU frame;
[0038] Please combine figure 2 As shown, when the logical channel type of a wireless sub-slot on the Um interface is a packet-specifi...
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The present invention discloses a transmitting method for radio service data frame signal in universal packet to the public, which will map the radio subtime gap of Um interface to the ground circuit of two routes 16 kbit / s at Abis interface when the logical channel type of a radio subtime gap at Um interface is the packet private channel and applying CS-3 / CS-4 coding mode. The method can save the ground circuit resources and can make a convenint for setting up the mapping from Um interface channel to the ground channel at the situation when it is difficult to confirm whether CS-3, CS-4 coding mode is to be applied or not for some one of packet private channel, even without disposal of 32K ground circuit as well as it can satisfy the requirements of the hardware of the original exchanging net with no necessity to up grade the hardware.
Description
technical field [0001] The present invention relates to a mobile communication system, and more specifically refers to a transmission method between a base station and a base station controller interface of a general packet radio service Background technique [0002] The GSM base station subsystem must introduce a packet control unit (PCU) when supporting general packet radio services. For the position of the packet control unit in the general packet radio service system, the ETSI protocol gives three suggestions, and its position has three forms: A, B, and C, such as figure 1 As shown, at present, most of the methods B and C are used. figure 1 Among them, the CCU is the channel coding unit, the BSC is the base station controller, the GSN site is the GSN site, the BSC site is the BSC site, and the PCU is the packet control unit. [0003] In the GSM system, the base station (base transceiver station) completes the mapping between the wireless air Um interface and the ground...
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IPC IPC(8): H04B7/26H04W92/10
Inventor许亮
OwnerHUAWEI TECH CO LTD