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Method and arrangement in telecommunication system

A mobile device and system information technology, applied in the field of telecommunication systems, can solve problems such as loss of important services, and achieve the effect of avoiding access attempts

Active Publication Date: 2012-08-29
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This can lead to an overload situation where important traffic such as voice calls is lost due to high load on the signaling interface due to access attempts for non-time critical communications

Method used

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  • Method and arrangement in telecommunication system

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0103] Example 1: Extension of existing "RACH Control Parameters" information element

[0104] according to figure 2 , the RACH control parameters are extended for the example case of 8 new "Extended Access Control Classes": EACCC00-C07 in octet 5.

[0105] figure 1 Shows the RACH control parameter information element, extended with 1 octet of "Extended Access Control Class" bits, denoted as "EAC Cxx". The corresponding description to be inserted in Table 10.5.2.29.1 in 3GPP TS 44.018 is shown in Table 3 below:

[0106] Table 3 RACH control parameter information element (excerpt from Table 10.5.2.29.1 in 3GPP TS 44.018)

[0107]

[0108] Alternatively, the above example with 8 "Extended Access Control Classes" can be extended to eg 16 such "Extended Access Control Classes" by adding another octet to the "RACH Control Parameters" information element.

[0109] The disadvantage of this method is that the scheme is not backward compatible, because the existing 3GPP TS44.01...

example 2

[0110] Example 2: Creating a new "Extended RACH Control Parameters" information element

[0111] To ensure backward compatibility, instead of extending the existing RACH Control Parameters information element of 3GPP TS 44.018 as described above, a new "Extended RACH Control parameters" information element. This does not need to contain any other information than the new "EAC Cxx" bits (eg Tx integer, cell access barring, etc.) as these are already included in the (mandatory) "RACH Control Parameters" information element. Therefore, the new information element can be as image 3 shown. image 3 The "Extended RACH Control Parameters" information element is shown, containing only the "RACH Extended Control Parameters IEI" and "Extended Access Control Class" bits (denoted as EAC Cxx).

[0112] In, for example, a system information type 1 message, a new "extended RACH control parameter" may be added as an optional information element, as shown in Table 4 below, where the additi...

example 3

[0118] Example 3: Add "Extended Access Control Class" information to the remaining octets

[0119] An alternative to the scheme described above in Example 1 and Example 2 is to add "extended access control class" information to the remaining octets of the corresponding system information message, rather than creating a new information element. As an example, for System Information Type 1, this can be achieved by modifying the remaining octets of SI 1 described in 10.5.2.32 of 3GPP TS44.018 as follows:

[0120]

[0121] For 8 instances of such classes, the remaining octets of SI 1 are extended with the "extended access control class" bits

[0122] To insert the corresponding description in Table 10.5.2.32.1a of 3GPP TS 44.018 according to Table 5 below:

[0123] Table 5 Details of remaining octet information elements of SI 1 to be added in Table 10.5.2.32.1a of 3GPP TS 44.018 for "Extended Access Control Category"

[0124]

[0125] Any (3GPP TS 44.018) legacy MS will on...

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Abstract

The invention relates to methods and arrangements for controlling access of a mobile device to a network, such as GSM. The mobile devices belong to an access control class (ACC) and for providing extended access control, and may also belong to an additional access control class (EACC). The arrangement broadcasts system information to the mobile devices, which system information indicates whether mobile device, which belong to an access control class (ACC), is allowed to access or are barred from accessing the network, and the system information further indicates whether the mobile device, which also belong to an extended access control class (EACC), is allowed to access or are limited from accessing the network. Different ways for limiting access is provided. An example is to block the mobile device from initiating communication, and allow the mobile device for communication initiated by the network. An example is to block the mobile device from communication initiated from the network, and allow the mobile for initiating communication. An example is to block the mobile device from initiating communication, as well as for communication initiated by the network. A mobile device blocked from network initiated communication is not allowed to answer a paging from the network.

Description

technical field [0001] The present disclosure relates to methods and devices in telecommunication systems, in particular to methods and devices for access control. Background technique [0002] A highly-penetrated cellular network with devices (using the network to communicate with servers or other devices) can be overloaded with devices flooding signaling interfaces and wasting available system resources. Many of these devices may not be time critical in the sense that it does not matter whether the data transfer is done directly or waits a few minutes or even longer. [0003] In this application, the concept is generally exemplified on a GSM network, however, this application can also be applied to other 3GPP radio access technologies, such as UMTS or LTE. [0004] Different types of mobile devices use the same communication resources in the radio access network, and some mobile devices may not be able to access the network due to high traffic caused by other mobile devic...

Claims

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Application Information

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IPC IPC(8): H04W48/02
CPCH04W48/02H04W48/06H04W48/12H04W48/08
Inventor 安德斯·克里斯藤森莫滕·松德贝里保尔·斯利瓦-伯特林安德烈亚斯·伯格斯特罗姆
Owner TELEFON AB LM ERICSSON (PUBL)
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