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Method, system and terminal for randomly accessing terminal

A randomization and terminal technology, applied in the field of communication, can solve the problems of network deterioration, increase of network resource overhead, not small resource overhead, etc., and achieve the effect of protecting the network

Active Publication Date: 2012-01-11
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] However, in figure 2 In the flow shown, if a large number of MTC terminals access at the same time, although the core network rejects the access requests of such MTC terminals, when the network load is high or the network is congested, the core network It is not a small resource overhead to calculate different delayed access times for each MTC terminal
[0020] The inventors found that in the related art, when the network load is high or the network is congested, the network calculates different delayed access times for each MTC terminal, which greatly increases the resource overhead of the network, which will make the original high load or A congested network gets worse

Method used

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  • Method, system and terminal for randomly accessing terminal
  • Method, system and terminal for randomly accessing terminal
  • Method, system and terminal for randomly accessing terminal

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0083] In a specific embodiment 1, the mobility management network element carries a randomization indication in the rejection response.

[0084] Figure 4 It is a schematic flow diagram of the mobility management network element MME rejecting the access of the MTC terminal and instructing it to randomly access after a delay time, with the following steps:

[0085] S401, the MTC UE requests to attach to the network;

[0086] S402, the eNodeB transmits the attach request of the MTC UE to the MME;

[0087]S403, the MME judges that the current network load is high or congestion has occurred, rejects the attach request of the MTCUE1, and returns an attach rejection response;

[0088] In the rejection response, the MME carries a delayed access time (Back off Time) determined according to the current network load and local policies, and the delayed access time is the same for all MTC terminals.

[0089] Further, the MME carries a randomization indication in the attach rejection r...

specific Embodiment 2

[0095] In the second specific embodiment, the wireless node carries a randomization indication in the rejection response.

[0096] Figure 5 It is a schematic flow diagram of rejecting the access of the MTC terminal for the wireless node and instructing it to randomly access after a delay time, with the following steps:

[0097] S501, the MME detects that the current load of the network is relatively high, or congestion has occurred;

[0098] S502. The MME sends a load control start message to the eNodeB. Through this message, the eNodeB knows that the current load of the core network is high, or congestion has occurred;

[0099] S503, the MTC UE requests to attach to the network;

[0100] S504, the eNodeB receives the attach request of the MTC UE, judges that the current network load is high or congestion has occurred, rejects the attach request of the MTC UE, and returns an attach rejection response;

[0101] In the rejection response, the eNodeB carries a delayed access...

specific Embodiment 3

[0105] In a third specific embodiment, the wireless node carries the randomization indication in the system broadcast.

[0106] Image 6 It is a schematic flow diagram of the wireless node notifying the terminal of the delay and random access through the system broadcast, and has the following steps:

[0107] S601, the MME detects that the current load of the network is relatively high, or congestion has occurred;

[0108] S602, the MME sends a load control start message to the eNodeB. Through this message, the eNodeB knows that the current load of the core network is high, or congestion has occurred;

[0109] S603. After receiving the load control start message sent by the MME, the eNodeB sends a system broadcast to notify the terminal that the current network load is high or congestion has occurred.

[0110] In the system broadcast, the eNodeB carries a delayed access time (Back off Time) determined according to the current network load situation and local policies, and t...

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Abstract

The invention discloses a method, system and terminal for randomly accessing a terminal. When a network load is overhigh or congestion exists, a network sends delay access information to one or more terminals, and after receiving the delay access information, the terminal accesses the network after random delay access time. According to the invention, computed actual random delay access time is uniformly distributed in a certain time slot, a large quantity of terminals requesting to be attached on the network at the same time and being rejected by the network can not be attached on the same time point during secondarily requesting to attach, and the purpose of controlling the random control is achieved. The computing operation is not carried out in a core network, thus network load is lightened.

Description

technical field [0001] The invention relates to the field of communication, in particular to a method for randomly accessing a terminal when the network is congested. Background technique [0002] With the development of mobile network services and automation control technologies, a Machine Type Communication (MTC for short), also known as a Machine to Machine (M2M) communication, has emerged. In the communication mode, the two parties of the communication are machines and equipment. [0003] In MTC communication, there are two important machine devices: MTC terminal (MTC UE) and MTC server (MTC Server). MTC terminals are user terminals with wireless access capabilities, similar to user terminals in human-to-human communication, but their behavior is controlled by some pre-configured policies and MTC servers. The MTC server is an application server deployed by the MTC service provider to receive data from the MTC terminal and issue service instructions to the MTC terminal....

Claims

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Application Information

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IPC IPC(8): H04W74/08
Inventor 周成李志军吴昊支春霞
Owner ZTE CORP
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