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Method for transmitting and obtaining system information in fembms system, network node and wireless device

A technology for wireless devices and network nodes, applied in wireless communication, access restrictions, electrical components, etc., can solve problems such as UE's incomprehension, and achieve the effects of optimizing distribution, reducing risks, and reducing the number of

Active Publication Date: 2021-11-19
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that when a UE receives such a message from the network, a UE supporting a certain 3GPP release usually cannot understand those parts of the message that are included as a release extension of a later release

Method used

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  • Method for transmitting and obtaining system information in fembms system, network node and wireless device
  • Method for transmitting and obtaining system information in fembms system, network node and wireless device
  • Method for transmitting and obtaining system information in fembms system, network node and wireless device

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Embodiment Construction

[0049] Some problems associated with existing solutions will now be discussed.

[0050] A problem that has been recognized in this solution is that if a new message is defined to include all necessary system information for eMBMS, the message may not be particularly flexible for different situations. Furthermore, it may be useful to have a "look-ahead" solution, eg, to avoid the size of this new message becoming too large in case more information needs to be added to any included SIB.

[0051] figure 1 The situation shown mainly occurs when the MBSFN subframe allocation is 100%. If the MBSFN subframe allocation is less than 100%, such as 90% or 80%, approximately conventional SI (system information) broadcasting can be applied. If the new message S11 and the SIBs it can schedule are flexibly defined, the same SI broadcast scheme can be effectively used in all cases. Furthermore, it may be the case that this message is extended in other use cases for which a flexible design ...

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Abstract

A network node (200), a wireless device (202) and methods in the network node (200) and wireless device (202) for transmitting or obtaining system information are disclosed. A network node (200) sends (2:1) a system information block type 1 SIB1 message, wherein the SIB1 message includes at least one other SIB as an extension besides SIB1. If the wireless device (202) is able to read the extension in the SIB1 message, the wireless device (202) reads (2:2) at least one other SIB in SIB1. The network node (200) may also send (2:1) at least one other SIB in a subsequent separate system information message. If the wireless device (202) cannot read the extension in the SIB1 message, the wireless device (202) can read at least one other SIB in a subsequently received system information message (2:4). Therefore, if the wireless device is able to read the extension in the SIB1 message, the wireless device will acquire system information earlier than if other SIBs are only sent in less frequent system information messages. If the wireless device cannot read the extension in the SIB1 message, it can still obtain other SIBs from subsequent system information messages.

Description

technical field [0001] The present disclosure generally relates to network nodes, wireless devices, and methods in network nodes and wireless devices for transmitting and obtaining system information in a wireless network. Background technique [0002] In this disclosure, the term "wireless device" is used to denote any communicating entity capable of radio communication with a radio network by sending and receiving radio signals, such as mobile phones, tablet computers, laptop computers, and machine-to-machine M2M devices ( Also known as machine type communication (MTC device). Another common term in this field is "User Equipment, UE," which is often used herein as a synonym for wireless device. [0003] Furthermore, the term "network node" is used herein to denote any node of a radio network operable to communicate with wireless devices over a radio interface and to send system information. A network node in this disclosure may refer to a base station, radio node, Node B...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W48/08H04W72/00
CPCH04W48/12
Inventor 延斯·博格奎斯特约翰·伯格曼赫尔卡-丽纳·马塔内
Owner TELEFON AB LM ERICSSON (PUBL)
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