CN100466849C - Method and system for controlling user terminal to read system message - Google Patents

Method and system for controlling user terminal to read system message Download PDF

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Publication number
CN100466849C
CN100466849C CNB2006100828794A CN200610082879A CN100466849C CN 100466849 C CN100466849 C CN 100466849C CN B2006100828794 A CNB2006100828794 A CN B2006100828794A CN 200610082879 A CN200610082879 A CN 200610082879A CN 100466849 C CN100466849 C CN 100466849C
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China
Prior art keywords
indication message
message
user terminal
system message
submodule
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Expired - Fee Related
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CNB2006100828794A
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Chinese (zh)
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CN101043671A (en
Inventor
胡灏
陆志宏
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Abstract

The disclosed method for controlling terminal reading system message comprises: when the system message changes, the NS sends indication including the changed scheduling message to the activated terminal; the terminal receives the indication message to read the latest system message. This invention enables the UE activated by OFDM technology to obtain system message in a LTE system normally, and improves system access performance.

Description

A kind of method and system of controlling user terminal to read system message
Technical field
The present invention relates to Long Term Evolution (long-term evolution, LTE) system, relate in particular to a kind of control and adopt OFDM (Orthogonal Frequency Division Multiplexing, the OFDM) method and system of the user terminal to read system message of technology.
Background technology
System message comprises: the timer sum counter of user terminal (UE), Public Land Mobile Nerwork (PublicLand Mobile Network; PLMN) identifier (ID), registration zone ID, cell selecting and gravity treatment parameters needed; The ID of sub-district, configuration of common channel information is measured control messages or the like.
In the prior art, system message adopt main message blocks (Main Information Block, MIB) and System information block (System Information Block, (BroadcastChannel BCH) sends mode SIB) by broadcast channel.Because BCH will allow the UE in the whole sub-district receive, so that its adopts is fixing than low rate and the transformat fixed.
UE starts shooting back or was in when the free time, (Idle) state entered new sub-district, catches the sub-district synchronizing channel, catches this sub-district BCH then, reads main message blocks and System information block.When system message changes, network side is by paging channel (PCH, paging channel) sends beep-page message, UE receives the main message blocks label value that reads after this message wherein, if find that the label value of main message blocks is different with the main message blocks label value of its storage, then read broadcast channel (BCH), according to the label value of the System information block that comprises in the main message blocks, which System information block on the broadcast channel is read in decision.
For the UE that is in the CELL-FACH state, when system message changes, network side is by forward channel (Forward Access Channel, FACH) transmitting system message changes indication, UE receives the label value that reads main message blocks after this indication, if find that the label value of main message blocks is different with the label of the main message blocks of its storage, then read broadcast channel (BCH), determine according to the label value of the System information block that comprises in the main message blocks this reads which System information block on the broadcast channel.
In the prior art, for adopting Frequency Division Duplexing (FDD) (Frequency division duplex, FDD) be in UE under the cell private channel (CELL_DCH), only can accept auxiliary publish control physical channel (Supplemental-Common Control Physical Channel simultaneously, S-CCPCH) and dedicated channel (Dedicated Channel, DCH) system message that UE can accept to change, general UE cannot realize.
Therefore, there is following shortcoming in prior art:
Because general UE can't normally accept the system message of variation under CELL_DCH, when UE will carry out cell selecting when activated state changes Idle state over to, if at this moment there are the data of burst to send to UE, UE need read the broadcast of selecting the sub-district, just can change state of activation over to then, this makes that the UE response is untimely.
For the LTE system, adopted the OFDM technology.The OFDM technology is a kind of multi-carrier modulation.At traditional frequency division multiplexing (Frequency Division Multiple, FDM) in the system, the signal spectrum on each carrier wave does not have overlapping, so that can be with traditional filtered method with its separation, extraction in the receiver, the disadvantage of doing like this is that the availability of frequency spectrum is low, causes frequency spectrum waste.The method that the OFDM technology is distinguished each subchannel is to utilize orthogonality strict between each subcarrier.Its allows subcarrier spectrum to overlap, and mutually orthogonally between subcarrier then can isolate data message from the subcarrier of aliasing as long as satisfy, so under the OFDM technology, UE can realize accepting simultaneously the signal of different channels.Therefore, the present invention is based in the LTE system this basis of signal that the UE that adopts the OFDM technology can accept different channels simultaneously, propose a kind of UE method of read system message how that is under the state of activation.
Summary of the invention
The invention provides a kind of method of controlling user terminal to read system message, be applied in the LTE system to adopt the UE of OFDM technology to be in state of activation following time and realize reading the system message of variation, overcome in the prior art since the UE of activated state generally normally receiving system message make UE respond untimely problem.
The method according to this invention, the present invention provides a kind of system of corresponding control user terminal to read system message in addition.
The inventive method comprises:
A, when system message changes, network side sends Indication message to the user terminal under the state of activation, the schedule information of the system message correspondence carry change in this Indication message after;
After B, user terminal receive described Indication message, read system message after the change according to described schedule information.
According to said method of the present invention, in the described steps A, send described Indication message by the radio resource control RRC entity of network side.
Described RRC entity sends described Indication message by the control channel of DSCH Downlink Shared Channel.
According to said method of the present invention, also comprise before the described steps A:
Described RRC entity judges whether system message changes, if system message changes, then carries out described steps A.
According to said method of the present invention, in the described steps A, in described Indication message, also carry the user terminal recorded information;
Among the described step B, after user terminal receives described Indication message, judge according to described user terminal recorded information whether self is the receiving terminal of this Indication message; If then read system message after the variation according to the positional information of indicating in the described schedule information; Otherwise, abandon this Indication message.
According to said method of the present invention, whether in the described steps A, also carrying in order to show in described Indication message is the Indication message label value of same Indication message;
Among the described step B, user terminal receive described Indication message and according to described user terminal recorded information judge self be the receiving terminal of this Indication message after, further judge whether to have received described Indication message with same label value; If do not receive, then read system message after the variation according to the positional information of indicating in the described schedule information; Otherwise, abandon this Indication message.
The invention provides a kind of system that controls user terminal to read system message, comprising:
The Indication message generation module is used for when system message changes sending Indication message to the user terminal under the state of activation, the schedule information of the system message carry change in this Indication message after; Indication message receives Executive Module, is arranged at user terminal, is used to receive described Indication message, and reads system message after the change according to described schedule information.
Described Indication message generation module is arranged in the RRC entity.
Described Indication message generation module comprises:
Judge submodule, be used to judge whether system message changes, when judging system message alteration, output signal to the generation submodule;
Generate submodule, receive the output signal of described judgement submodule after, generate Indication message and also send the transmission submodule to; In the Indication message that generates, comprise user terminal recorded information, the Indication message label value under the state of activation and change after the schedule information of system message;
Send submodule, the Indication message that the receives control channel by DSCH Downlink Shared Channel is sent to user terminal.
Described Indication message receives Executive Module, comprising:
Indication message receives judges submodule, receives described Indication message, according to the user terminal recorded information of carrying in the Indication message, judges whether self is the receiving terminal of this Indication message; According to the Indication message label value that carries in the Indication message, judge whether to receive described Indication message with same label value; When judging self is this Indication message receiving terminal and when not receiving the described Indication message of same label value, outputs signal to the Indication message analyzing sub-module;
The Indication message analyzing sub-module is resolved the schedule information of carrying in the described Indication message, exports to the system message reading submodule;
The system message reading submodule reads system message after the change according to the positional information of indicating in the schedule information.
Beneficial effect of the present invention is as follows:
(1) adopt the present invention, when system message changed, network side sent Indication message to the user terminal under the state of activation, the schedule information of the system message carry change in this Indication message after; After user terminal receives Indication message, read system message after the change according to described schedule information.Like this, the UE that is in state of activation goes to read system message after the variation according to Indication message, has both realized obtaining the purpose of the system message after the variation, needn't always go to understand system message again.Implementation method is simply effective.
(2) the present invention adopts the control channel transmission Indication message that is passed through DSCH Downlink Shared Channel by the radio resource control RRC entity of network side, needn't additionally increase network functional entity, and it is low to control simple cost.
(3) adopt the present invention, realized that the UE under the state of activation also can normally obtain system message, thus make UE from the activated state to the Idle state again the transit time to activated state very short, improved the access performance of whole communication system, promoted user's business impression.
Description of drawings
Fig. 1 is the inventive method signaling process figure;
Fig. 2 is the inventive method flow chart of steps;
Fig. 3 is the system configuration schematic diagram of control user terminal to read system message provided by the invention.
Embodiment
The invention provides a kind of method of controlling user terminal to read system message, be applied in the LTE system to adopt the UE of OFDM technology to be in state of activation following time and read the system message of variation, this method comprises:
When system message changed, network side sent Indication message to the user terminal under the state of activation, the schedule information of the system message carry change in this Indication message after; After user terminal receives Indication message, read system message after the change according to described schedule information.
Fig. 1 is the signaling process schematic diagram of the inventive method, comprising:
1, network side entity (as adopting the radio resource control RRC entity) judges whether system message changes, and when system message changed, the Indication message of the schedule information of the system message after the change was carried in generation;
2, send the Indication message of generation to UE;
3, after UE receives Indication message, read system message after the change according to the schedule information of carrying in the Indication message.
Below said method of the present invention is described in detail.Referring to Fig. 2, the flow chart of steps for the present invention's one specific embodiment comprises:
Step S11, RRC judge whether system message changes, if system message changes, and execution in step S12 then.
Because system message is subjected to the RRC control and management, whether RRC detects current system message identical with the last system message that sends, if different, judges that then system message changes.
Step S12, the control channel by DSCH Downlink Shared Channel send Indication message to UE.
In this step, generate Indication message earlier, the information cell that carries in this Indication message is as shown in table 1 below:
Table 1:
Information unit Explanation
UE record (user terminal record) Identify which UE and should read this Indication message
The Indication message label value Whether sign is same message (integer 1-256)
Schedule information Where indication UE should go to read the system message after the variation
Wherein, the particular content that comprises of schedule information can be as shown in table 2 below:
Table 2:
Information unit Explanation
SEG_COUNT (hop count) The hop count that the tag system message blocks is divided, the hop count of the System information block of integer 1-maximum, default value are 1
SIB_REP (System information block repetition period) The repetition period of Integer (4,8,16,32,64,128,256,512,1024,2048,4096) tag system message blocks
SIB_POS (position that System information block is first section) 0...SIB_REP-2, be step-length with 2.
SIB_OFF (System information block biasing) 2-32 increases with 2, identifies the biasing of each message blocks
In the table 2, SIB_REP represents the repetition period of every section of System information block.As the repetition period be 4, expression: per 4 frames send once this section.
SIB_POS represents the position of first section of System information block, supposes SIB_REP=4, and then the span of first of System information block section position is 0 or 2.If SIB_REP=8, the span of first section position of System information block is 0,2,4,6.
SIB_OFF represents that the section of back departs from the irrelevance of the last period, that is:
SIB_POS(i)＝SIB_POS(i-1)+SIB_OFF。
The Indication message that the RRC entity will carry user terminal record, Indication message label value and schedule information sends to UE by the control channel of DSCH Downlink Shared Channel.
After step S13, UE receive Indication message, read the user terminal recorded information of carrying in the Indication message, continue step S14.
Step S14, UE judge according to the user terminal recorded information whether self is the receiving terminal of this Indication message; If continue step S15; Otherwise, execution in step S17.
Step S15, UE read the Indication message label value that carries in the Indication message, further judge whether to have received the described Indication message with same label value; If do not receive, execution in step S16 then; Otherwise, execution in step S17.
Step S16, UE read system message after the variation according to the positional information of indicating in the schedule information.
Step S17, UE abandon the Indication message of reception, do not do any processing.
According to said method of the present invention, the invention provides a kind of system that controls user terminal to read system message, its structural representation comprises as shown in Figure 3:
The Indication message generation module is used for when system message changes sending Indication message to the user terminal under the state of activation, the schedule information of the system message carry change in this Indication message after;
Indication message receives Executive Module, is arranged at user terminal, is used to receive described Indication message, and reads system message after the change according to schedule information.
The Indication message generation module can be arranged in the RRC entity.
Wherein, the Indication message generation module comprises:
Judge submodule, be used to judge whether system message changes, when judging system message alteration, output signal to the generation submodule;
Generate submodule, receive the output signal of judging submodule after, generate Indication message and also send the transmission submodule to; In the Indication message that generates, comprise user terminal recorded information, the Indication message label value under the state of activation and change after the schedule information of system message;
Send submodule, the control channel that the Indication message that receives is passed through DSCH Downlink Shared Channel sends.
Wherein, Indication message receives Executive Module, comprising:
Indication message receives judges submodule, and the reception Indication message according to the user terminal recorded information of carrying in the Indication message, judges whether self is the receiving terminal of this Indication message; According to the Indication message label value that carries in the Indication message, judge whether to receive Indication message with same label value; When judging self is this Indication message receiving terminal and when not receiving the described Indication message of same label value, outputs signal to the Indication message analyzing sub-module;
The Indication message analyzing sub-module is resolved the schedule information of carrying in the described Indication message, exports to the system message reading submodule;
The system message reading submodule reads system message after the change according to the positional information of indicating in the schedule information.
In sum, adopt the present invention, when system message changed, network side sent Indication message to the user terminal under the state of activation, the schedule information of the system message carry change in this Indication message after; After user terminal receives Indication message, read system message after the change according to time for reading of indicating in the described schedule information and positional information.Like this, the UE that is in state of activation goes to read system message after the variation according to Indication message, has both realized obtaining the purpose of the system message after the variation, needn't always go to understand system message again.Implementation method is simply effective.
The present invention adopts the control channel transmission Indication message that is passed through DSCH Downlink Shared Channel by the radio resource control RRC entity of network side, needn't additionally increase network functional entity, and it is low to control simple cost.
The present invention has realized that the UE under the state of activation also can normally obtain system message, thus make UE from the activated state to the Idle state again the transit time to activated state very short, improved the access performance of whole communication system, promoted user's business impression.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims (10)

1, a kind of method of controlling user terminal to read system message is characterized in that, comprising:
A, when system message changes, network side sends Indication message to the user terminal under the state of activation, the schedule information of the system message correspondence carry change in this Indication message after;
After B, user terminal receive described Indication message, read system message after the change according to described schedule information.
2, the method for claim 1 is characterized in that, in the described steps A, sends described Indication message by the radio resource control RRC entity of network side.
3, method as claimed in claim 2 is characterized in that, described RRC entity sends described Indication message by the control channel of DSCH Downlink Shared Channel.
4, method as claimed in claim 3 is characterized in that, also comprises before the described steps A:
Described RRC entity judges whether system message changes, if system message changes, then carries out described steps A.
5, as the described method of any claim of claim 1-4, it is characterized in that, in the described steps A, in described Indication message, also carry the user terminal recorded information;
Among the described step B, after user terminal receives described Indication message, judge according to described user terminal recorded information whether self is the receiving terminal of this Indication message; If then read system message after the variation according to the positional information of indicating in the described schedule information; Otherwise, abandon this Indication message.
6, method as claimed in claim 5 is characterized in that, whether in the described steps A, also carrying in order to show in described Indication message is the Indication message label value of same Indication message;
Among the described step B, user terminal receive described Indication message and according to described user terminal recorded information judge self be the receiving terminal of this Indication message after, further judge whether to have received described Indication message with same label value; If do not receive, then read system message after the variation according to the positional information of indicating in the described schedule information; Otherwise, abandon this Indication message.
7, a kind of system that controls user terminal to read system message is characterized in that, comprising:
The Indication message generation module is used for when system message changes sending Indication message to the user terminal under the state of activation, the schedule information of the system message carry change in this Indication message after;
Indication message receives Executive Module, is arranged at user terminal, is used to receive described Indication message, and reads system message after the change according to described schedule information.
8, system as claimed in claim 7 is characterized in that, described Indication message generation module is arranged in the RRC entity.
9, system as claimed in claim 8 is characterized in that, described Indication message generation module comprises:
Judge submodule, be used to judge whether system message changes, when judging system message alteration, output signal to the generation submodule;
Generate submodule, receive the output signal of described judgement submodule after, generate Indication message and also send the transmission submodule to; In the Indication message that generates, comprise user terminal recorded information, the Indication message label value under the state of activation and change after the schedule information of system message;
Send submodule, the Indication message that the receives control channel by DSCH Downlink Shared Channel is sent to user terminal.
10, system as claimed in claim 9 is characterized in that, described Indication message receives Executive Module, comprising:
Indication message receives judges submodule, receives described Indication message, according to the user terminal recorded information of carrying in the Indication message, judges whether self is the receiving terminal of this Indication message; According to the Indication message label value that carries in the Indication message, judge whether to receive described Indication message with same label value; When judging self is this Indication message receiving terminal and when not receiving the described Indication message of same label value, outputs signal to the Indication message analyzing sub-module;
The Indication message analyzing sub-module is resolved the schedule information of carrying in the described Indication message, exports to the system message reading submodule;
The system message reading submodule reads system message after the change according to the positional information of indicating in the schedule information.
CNB2006100828794A 2006-06-15 2006-06-15 Method and system for controlling user terminal to read system message Expired - Fee Related CN100466849C (en)

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