Hybrid signaling data transmission method based on orthogonal frequency-division multi-access system
An orthogonal frequency division multiple access and access system technology, which is applied in the field of signaling and data mixed transmission, can solve the problems of high delay and packet loss requirements, achieve low signaling queuing delay and packet loss rate, and be timely and effective The effect of passing
Active Publication Date: 2012-07-04
TSINGHUA UNIV
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Compared with data, signaling generally has higher delay and packet loss requirements, but the traditional resource allocation mechanism does not consider the difference between the two for transmission
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[0025] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples serve to illustrate the present invention, but do not limit the scope of the present invention.
[0026] Such as figure 1 As shown, the mixed signaling and data transmission method based on the OFDA system described in the present invention includes the steps: S1: When the signaling and data streams transmitted to each user arrive at the base station, the base station will belong to each The signaling and data streams of each user are separated into different priority queues corresponding to the user; S2: The base station allocates sub-channels according to the different buffer queue information of each user, the QoS service quality requirement information and the channel status information fed back by the user. and power allocation; S3: The base station sends the signaling and data ...
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The invention provides a hybrid signaling data transmission method based on an orthogonal frequency-division multi-access system. The method comprises the following steps: S1, when a signaling and data stream transmitted to each user reaches a base station, the base station isolates the signaling and data stream belonging to each user into different priority level queues corresponding to the user; S2, the base station allocates sub-channels and power according to different cache queue information of each user, Qos (quality of service) service quality requirement information and channel state information fed back by the user; and S3, the base station transmits the signaling and data stream to be transmitted to each user through an OFDM (Orthogonal Frequency Division Multiplexing) channel. According to the invention, the signaling is ensured to be transmitted preferentially and reliably, and signaling queuing time delay and packet loss rate are decreased greatly, so that transmission of system control information is guaranteed effectively; and meanwhile, good average among multi-user diversity performance, user interruption rate and singling transmission performance is struck.
Description
technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a signaling data hybrid transmission method in an Orthogonal Frequency Division Multiple Access (OFDMA) system. Background technique [0002] OFDMA technology is recognized as the core technology of the fourth generation mobile communication system, and it can obtain higher spectral efficiency by utilizing multi-user diversity. At present, resource allocation in most OFDMA systems is mainly performed based on user channel status information. The fourth-generation cellular communication system will be an IP-based packet network. In the packet network environment, the base station will maintain a queue for each user. Efficient resource allocation For higher system performance, queue information should be taken into consideration. In addition, a packet network is characterized in that MAC upper-layer signaling and media data will be mixed for transmission. Compa...
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IPC IPC(8): H04W72/04H04W72/12
Inventor 陶晓明邓卉陆建华
Owner TSINGHUA UNIV