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Method and system for processing uploading downloading data in radio communication network
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A wireless communication network and data processing technology, which is applied in the field of transmission data processing, can solve the problems that business frames occupy fixed bandwidth and cannot realize bandwidth sharing, etc., and achieve the effect of reducing data transmission, increasing speed, and saving network resources
Active Publication Date: 2009-03-25
HUAWEI TECH CO LTD
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[0009] At present, the data transmission in GSM is based on the TDM method. Since the service frame occupies a fixed bandwidth in the TDM method, bandwidth sharing cannot be realized
Method used
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Embodiment 1
[0048] Figure 4 It is a flow chart of Embodiment 1 of the method for downloading data in a wireless communication network such as GSM in the present invention. In this embodiment, TRAU is also set on the BSC side, corresponding to Embodiment 1 of the upload method. The method for downloading voice data in GSM specifically includes The following steps:
[0049] Step 201, the MGW downlinks and receives PCM data from the core network;
[0050] Step 202, encapsulating the PCM data into an IP packet and sending it to TRAU;
[0051] Step 203, TRAU performs corresponding source coding on the PCM data, and judges whether the encoded data is a valid frame, if so, executes step 204; otherwise, executes step 208;
[0052] Step 204, TRAU encapsulates the current frame, that is, the valid frame, into an IP packet and sends it to the BTS;
[0053] Step 205, the BTS receives the data encapsulated by the IP packet from the Abis interface;
[0054] Step 206, judge whether the data encapsula...
Embodiment 2
[0059] Figure 5 It is a flow chart of Embodiment 2 of the method for processing uploaded data in a wireless communication network such as GSM in the present invention. In this embodiment, TRAU is not set in BSS, and TRAU is replaced by TC in MGW, so as to minimize changes to the existing network . After the mobile terminal sends the voice data through the Um interface, uploading the voice data in the air interface data in the GSM specifically includes the following steps:
[0060] Step 301, the BTS receives air interface data from the Um interface, assuming that the air interface data received in this embodiment is EFR, FR or HR service data;
[0061] Step 302, perform channel decoding on the air interface data, and determine whether the current frame is damaged by air interface interference, or whether the current frame is an invalid frame such as a bad frame or a filling frame; if so, perform step 311; otherwise, indicate that the current frame is good Effective frames su...
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Abstract
The invention relates to a method and a system for processing upload data and download data in a wireless communication network. An upload data processing method comprises the following steps: air-interface data is received; and the air-interface data is processed through channel decoding, available frames in the air-interface data which is processed through decoding are packed to form an IP packet. The download data processing method comprises the following steps: the IP packet is received; and the available frames in the IP packet are processed through channel coding and transmission. An upload data processingsystem comprises a base stationtransceiver and an information source decoding unit; and a download data processing system comprises the base stationtransceiver and an information source coding unit. Data is processed through IP encapsulation, GSM is led to transmit data in an IP manner; in addition, the available frames such as a voice frame, etc. are transmitted only, thereby enhancing the transmission performance of the GSM.
Description
technical field [0001] The present invention relates to communication technology, in particular to a method and system for processing transmission data in a Global System for Mobile communication (GSM). Background technique [0002] The existing GSM communication network has two typical network structures, one is the transcoder & rate adaptation unit (Transcoder & Rate Adaptation Unit, TRAU) on the base station controller (BaseStation Controller, BSC) side, such as figure 1 As shown; one is that the TRAU is on the mobile switching center (Mobile Switching Center, MSC) / media gateway (Media Gateway, MGW) side, such as figure 2 shown. [0003] The voice service data of these two structures are all based on the time division multiplexing (Time Division Multiplexing, TDM) transmission mode, wherein, the transmission format of the voice service data between each network element is: [0004] When TRAU is on the BSC side, 64Kbit / s pulse code modulation (Pulse Code Modulation, PCM...
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