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Network access method of machine-to-machine (M2M) communication terminals

A terminal access and terminal technology, applied in the direction of wireless communication, electrical components, etc., can solve the problem that the access delay cannot be really satisfied, and achieve the effect of alleviating congestion

Inactive Publication Date: 2012-07-04
BEIJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because LTE TS 36.211 stipulates that the RACH channel density is limited to a maximum of 6, that is, there are a maximum of 6 RACH resources per 10 ms, the limited RACH resources make the existing technical solutions unable to truly meet the access delay requirements of massive M2M uplink services

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  • Network access method of machine-to-machine (M2M) communication terminals

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Embodiment Construction

[0038] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0039] Such as image 3 As shown, this embodiment records a method for an M2M terminal to access a network, including the following steps:

[0040] S1: The base station divides a large number of M2M terminals into multiple M2M groups, so that the M2M terminals belonging to the same M2M group have the same service category and the same service quality level; sort;

[0041] After the massive M2M terminals in this embodiment are divided, N M2M groups are formed, and the multiple M2M groups are sorted according to the order of service quality levels from high to low, so that the first M2M group has the highest priority, and the Nth M2M group has the highest priority. Each M2M group has the lowest priority, and the number of M2M terminals in the nth M2M group is NUMn, where n is a natural number from 1 to N.

[0042] S2: A large number of M2M terminals ...

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Abstract

The invention discloses a network access method of machine-to-machine (M2M) terminals. The network access method comprises the steps of: S1, dividing a plurality of M2M terminals into a plurality of M2M groups by a base station into so as to ensure that the M2M terminals belonging to the same M2M group have a same business type and a same service quality level; S2, electrifying the M2M terminals to realize initial uplink synchronization and keeping an uplink synchronization state; S3, calculating the channel capacity of a PRACH (Physical Random Access Channel) and the channel capacity of a PUCCH (Physical Uplink Control Channel) of a current system; and S4, when the M2M terminals generate uplink data to be sent, preferentially sending scheduling requests through the PRACH, and when the PRACH undergoes collision, dynamically distributing PUCCH scheduling request resources to the M2M terminals by the base station and sending the scheduling requests by the M2M terminals through the PUCCH. According to the method disclosed by the invention, the congestion of the PRACH is alleviated, and the service quality requirements of the M2M business terminals are finally met.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method for machine-to-machine communication terminals to access a network. Background technique [0002] In recent years, with the vigorous rise of the Internet of Things technology, machine-to-machine communication (M2M, Machine to Machine) services, such as smart meter reading, smart home appliances, industrial monitoring, environmental testing, etc., have been recognized by the industry for their wide application prospects of close attention. At the same time, considering the characteristics of M2M services: 1) if the number of terminals is huge, 2) the function is simple, the service is single, and the data volume is small (<100bytes), 3) it can tolerate low transmission rate and is not sensitive to delay, 4 ) does not have mobility or moves regularly, 5) mainly uplink PS services, 6) low-frequency (>5min) large-scale periodic reporting, M2M services a...

Claims

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Application Information

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IPC IPC(8): H04W74/08
Inventor 田辉张平林尚静徐玲玲孙琳琳
Owner BEIJING UNIV OF POSTS & TELECOMM
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