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A method for speed assignation of forward direction alternate channel in CDMA system

A forward supplementary channel and channel assignment technology, applied in the field of forward supplementary channel rate assignment, can solve the problems of unfavorable resource utilization efficiency and no consideration of channel utilization efficiency, so as to improve response time and resource utilization efficiency, The effect of shortening the scheduling delay and ensuring fairness

Inactive Publication Date: 2006-07-12
ZTE CORP
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Problems solved by technology

However, this method has the following disadvantages: it does not consider the utilization efficiency of the channel, resulting in the allocation of resources between users in turn, which is not conducive to improving the efficiency of resource utilization

Method used

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  • A method for speed assignation of forward direction alternate channel in CDMA system
  • A method for speed assignation of forward direction alternate channel in CDMA system

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Embodiment Construction

[0016] Taking a system in which the available resource of the forward supplementary channel is 28X as an example, the present invention will be described in detail with reference to the accompanying drawings.

[0017] figure 1 It is the state partition diagram of the forward supplementary channel scheduling duration Duration, which is divided into two sections of state A and B: the range of state A is calculated from the start time of the scheduling duration, and the time length is the scheduling duration minus a predetermined time constant T, that is, D-T , the range of state B is counted from the end of A, and the time length is T; T is greater than or equal to the time it takes for the base station to send the extended supplementary channel assignment message to the mobile station receiving the extended supplementary channel assignment message, and is less than the minimum scheduling time supported by the system .

[0018] Currently, the highest single-user rate supported ...

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Abstract

The invention discloses a forward supplementary channel speed allocating method in CDMA system, applied to CDMA communication system, especially CDMA 2000 1X system, concretely including the steps as follows: dividing the planning time length of each forward supplementary channel into an and B segments; when the system receives a user's request for resources of forward supplementary channels, if there are not enough resources for the user, then: if finding one channel situated in state B and unallocated in advance in all the forward supplementary channels, allocate a part of its resources to the user; otherwise the system will find one channel, which has the least prearranged times and the highest speed, in all the forward supplementary channels situated in state A, notice the user to resend the request when this channel is in state B, and then allocate him the resources. It shortens the planning delay time, assures fairness of system, and enhances utilization ratio of resources.

Description

technical field [0001] The invention relates to a CDMA (Code Division Multiple Access) communication system, in particular to a method for forward supplementary channel rate assignment in the CDMA 2000 1X system. Background technique [0002] The CDMA system that conforms to the IS-2000 standard provides high-speed packet data services for mobile users, and the air physical channel that bears the weight of this service is a forward supplementary channel. The data transmission rate of the forward supplementary channel is often expressed in the form of 1X, 2X, 4X, ..., 16X, where X is the basic rate unit, and there are two types specified in the IS-2000 standard: 9600bit / s and 14400bit / s. The higher the data transmission rate, the more resources the system allocates to the physical channel, and the two are directly proportional. The resources used by the forward supplementary channel include: channel unit (referring to the processing unit on the modem chip), Walsh code, frame...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q7/20H04J13/02H04W28/22H04W72/04
Inventor 韩桂鲁郑霖刘永刚
Owner ZTE CORP
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