Accidental access method for honeycomb wireless communication system

A communication system and random access technology, applied in the field of communication, can solve the problems of heavy signaling interaction burden, large processing delay, and low processing efficiency, and achieve the effects of reducing signaling burden, improving efficiency, and reducing complexity

Inactive Publication Date: 2009-02-18
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] As mentioned above, the current random access method has problems such as large processing delay, low processing efficiency, high complexity of physical layer processing, and heavy burden of signaling interaction between the physical layer and high layers.

Method used

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  • Accidental access method for honeycomb wireless communication system
  • Accidental access method for honeycomb wireless communication system
  • Accidental access method for honeycomb wireless communication system

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0041] In this embodiment, a random access method of a cellular wireless communication system is provided, wherein layers 2 and 3 determine that the random access response has not been successfully received and decide to resend the random access preamble. Such as Figure 5 As shown, the method includes the following processing:

[0042] Step S502, layer 2 and layer 3 of the terminal (that is, the second layer and the third layer mentioned above) trigger the physical layer to send a random access preamble (random access preamble message);

[0043] Step S504, layer 2 and layer 3 determine whether a random access response (random access response message) is received within the receiving time window;

[0044] Step S506, if the layer 2 and the layer 3 judge that no random access response is received, trigger the physical layer to resend the random access preamble.

[0045] Afterwards, under the trigger of layer 2 and layer 3, the physical layer stops receiving the random access r...

example 1

[0047] The above process is described below with an example of interaction between the MAC layer and the physical layer.

[0048] First, the MAC layer protocol of the terminal triggers the physical layer to send a random access preamble; after the physical layer finishes sending the random access preamble, it starts to wait for the random access response;

[0049] The MAC layer does not receive any random access response message within the receiving time window, and decides to resend the random access preamble, thus triggering the physical layer to resend a random access preamble;

[0050] After receiving the new trigger message, the physical layer stops receiving the random access response immediately, and sends the random access preamble on the random access time slot required by the trigger message.

no. 2 example

[0052] In this embodiment, a random access method of a cellular wireless communication system is provided, wherein, layer 2 and layer 3 determine that the random access response has not been successfully received and decide to give up retransmitting the random access preamble, specifically, layer 2. Layer 3 may give up retransmitting the random access preamble because the number of times of retransmission reaches the predetermined maximum number. Such as Figure 6 As shown, the method includes the following processing:

[0053] Step S602, the layer 2 and layer 3 of the terminal trigger the physical layer to send the random access preamble;

[0054] Step S604, Layer 2 and Layer 3 determine whether a random access response is received within the receiving time window;

[0055] Step S606, if layer 2 and layer 3 determine that no random access response has been received, notify the physical layer to stop receiving the random access response.

[0056] Afterwards, after receiving...

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PUM

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Abstract

This invention discloses a random access method of cellular wireless communication system, including a second layer and a third layer of a terminal initiates a physical layer to send a random access preamble; the second and third layers judge whether a random access response is received in a receiving time window; if the second and third layers judge that the random access response is not received, then the physical layer is initiated so as to re-send the random access preamble. Judging whether the random access response is received in the receiving time window and determining whether re-sending the random access preamble are finished by a high layer protocol through this invention, which improves the efficiency of protocol processing and reduces the complexity of physical layer processing, and further reduces the parameter transferring between the physical layer and the high layer and the signaling load of the information transferring.

Description

technical field [0001] The present invention relates to the communication field, and in particular, relates to a random access method of a cellular wireless communication system. Background technique [0002] Such as figure 1 As shown, the cellular wireless communication system is mainly composed of a terminal, a base station, and a core network (Core Network, CN). 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. base station (for example, figure 1 There may be a physical or logical connection between the base station 1 and the base station 2 or the base station 3) according to the actual situation. Each base station can be connected to one or more core network nodes. The core network is responsible for non-access stratum affairs, such as location updates. Terminal refers to various devices that can communicate with the cellular wireless c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/38
Inventor 杜忠达张峻峰
Owner ZTE CORP
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