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Method and device for determining system information

A system information and determination method technology, which is applied in the field of system information determination methods and devices, can solve the problems of increasing system signaling overhead, prolonging time, reducing resource effectiveness, etc., and achieves increasing system signaling overhead, effectively utilizing resources, The effect of reducing signaling overhead

Inactive Publication Date: 2018-02-23
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Embodiments of the present invention provide a method and device for determining system information, so as to at least solve the problem that the increase in system information in the related art results in prolonged time for user equipment to obtain valid system information, and at the same time, base stations need more resources to send system information, resulting in Reduced resource availability and increased system signaling overhead

Method used

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  • Method and device for determining system information
  • Method and device for determining system information
  • Method and device for determining system information

Examples

Experimental program
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specific Embodiment 1

[0046] image 3 This is a flowchart for the UE to obtain random access information for this specific implementation, such as image 3 As shown, including the following steps:

[0047] Idle User Equipment (UE) A starts up, initially accesses the network, and establishes a connection with the network (Long-Term Evolution (LTE) refers to Radio Resource Control (RRC) connection);

[0048] 1. UE A powers on and searches for the frequency point. After finding the strongest frequency point, it searches for the Packet Swi tching Service (PSS) and Subscriber Service System (SSS) to obtain the physical layer cell identity , And the subframe type, such as FDD.

[0049] 2. After UE A obtains the physical layer cell ID (cell ID), obtains the random access channel (Physical Random Access CHannel, referred to as PRACH) configuration index number through the formula (cell ID) mod (N+1) to obtain the preamble time Frequency resource information, where N represents the number of PRACH configurations...

specific Embodiment 2

[0053] Specific embodiment 2: UE B starts to obtain system bandwidth information:

[0054] Figure 4 This is a flowchart for the UE to obtain system bandwidth information in this specific embodiment, such as Figure 4 As shown, including the following steps:

[0055] 1. UE B starts up and searches for frequency points. After finding the strongest frequency point, it searches for PSS and SSS to obtain the physical layer cell identity and subframe type, such as FDD.

[0056] 2. After UE B obtains the physical layer cell ID (cell ID), it obtains downlink bandwidth information through the formula int[cell ID / 100]. For example, there are 6 bandwidth types in LTE, dl-Bandwidth ENUMERATED{n6, n15, n25, n50, n75, n100}, then int[cell ID / 100]=0 represents the first type of bandwidth, that is, n6, and int[cell ID / 100]=5 represents the sixth type of bandwidth, that is, n100.

[0057] 3. The UE derives system bandwidth index information based on the information obtained above, and UE B obtains th...

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Abstract

The invention provides a method and a device for determining system information. The method comprises the following steps of acquiring at least one piece of cell characteristic information used for describing cell characteristics; and determining system information corresponding to the cell characteristic information according to the acquired cell characteristic information. According to the method and the device, the problems that the time for acquiring the effective system information by the user equipment is prolonged due to the increase of the system information in the correlation technique, and meanwhile, a base station needs more resources to send the system information in order to reduce the effectiveness of resources and increase the system signaling overhead are solved, and the effects of more effectively utilizing the resources and reducing the signaling overhead are achieved.

Description

Technical field [0001] The present invention relates to the field of communications, in particular to a method and device for determining system information. Background technique [0002] At present, according to the importance of broadcast information content and different transmission methods, system information is divided into a master information block (Master Information Block, referred to as MIB) and a system information block (System Information Block, referred to as SIB). The MIB mainly carries the most basic information of the cell such as the system frame number, cell bandwidth, and physical Hybrid ARQ Indicator Channel (PHICH) channel information. SIB classified and used SIB1-SIB20 according to its content. The MIB message is broadcast on a physical broadcast channel (Physical Broadcast Channel, referred to as PBCH), and a radio resource control (Radio Resource Control, referred to as RRC) message of the physical downlink shared channel (Physical Downlink Shared Chann...

Claims

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Application Information

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IPC IPC(8): H04W48/16H04W72/04H04W74/00H04W74/08
CPCH04W48/16H04W74/004H04W74/006H04W74/0866H04W72/23
Inventor 杜婷
Owner ZTE CORP