CN103747482B - A kind of method of solving conflict of system broadcast information of relay node - Google Patents
A kind of method of solving conflict of system broadcast information of relay node Download PDFInfo
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- CN103747482B CN103747482B CN201410021296.5A CN201410021296A CN103747482B CN 103747482 B CN103747482 B CN 103747482B CN 201410021296 A CN201410021296 A CN 201410021296A CN 103747482 B CN103747482 B CN 103747482B
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- system broadcast
- broadcast information
- dedicated signaling
- radio frame
- frame boundaries
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Abstract
The invention discloses a kind of method for solving via node RN conflict of system broadcast information, including：RN set its radio frame boundaries and base station Donor eNB radio frame boundaries synchronously align, read system broadcast information according to sending the cycle as defined in LTE during RN initial power-ons, subsequently no longer monitoring system broadcast message；When system broadcast information updates, system broadcast information is informed RN by Donor eNB by dedicated signaling；The present invention can be good at solving RN while the problem of receiving and send conflict of system broadcast information, take into full account that RN can not be while take the influence that similar frequency bands receive and send and bring, reception and the subframe of transmission system broadcast information by the RN that staggers, or change the transfer mode of system broadcast information, so as to avoid RN while receiving and sending system broadcast information.
Description
The cross reference of related application：
The application is divisional application, and the Application No. 200910137505.1 of original application, the applying date is 04 month 2009 28
Day, entitled " a kind of method of solving conflict of system broadcast information of relay node ".
Technical field
The present invention relates to wireless communication technology field, more particularly to a kind of solution via node（Relay-Node, referred to as
RN）The method of conflict of system broadcast information.
Background technology
In order to meet the demand of growing big bandwidth high-speed mobile access, third generation partnership project（Third
Generation Partnership Projects, abbreviation 3GPP）Release senior long term evolution（Long-Term Evolution
Advance, abbreviation LTE-Advanced）Standard.LTE-Advanced is for Long Term Evolution（Long-Term Evolution, letter
Claim LTE）Evolution remain LTE core, frequency domain, spatial domain are expanded using a series of technologies on this basis, with up to
To purposes such as the raising availability of frequency spectrum, increase power system capacities.Wireless relay（Relay）Technology is the technology in LTE-Advanced
One of, it is intended to the coverage of Extended Cell, the dead angle area in communication is reduced, balanced load shifts the business of hot zones,
Save user terminal（User Equipment, abbreviation UE）Transmission power.As shown in figure 1, in original base station（Donor-
eNB）Increase some new via nodes between UE（Relay-Node, abbreviation RN）, these newly-increased RN and Donor-eNB are
By not having wired connection between wireless connection, and transmission network, downlink data first reaches Donor-eNB, then passed to again
RN, RN are transmitted to UE again, up then on the contrary.This method has furthered antenna and UE distance, can improve UE link-quality,
So as to improve the spectrum efficiency and user data rate of system.
UE knows network side information by system broadcast information, and system broadcast information is also that network side is configured to UE
Important means.System broadcast information is divided into 3 parts in LTE system：Master Information Block（Master Information
Block, abbreviation MIB）, system information block 1（System Information Block1, abbreviation SIB1）With other system informations
Block.Other system information blocks include the other systems block of information in addition to SIB1, such as：System information block 2（System
Information Block2, abbreviation SIB2）... ..., system information block 11（System Information Block11, letter
Claim SIB11）.If subsequently also system broadcast information needs to send, however not excluded that continue to increase the possibility of system broadcast information.
MIB includes downlink system bandwidth, Physical HARQ Indicator Channel（Physical HARQ Indicator Channel,
Abbreviation PHICH）Configuration information, System Frame Number（System Frame Number, abbreviation SFN）Three parts.Physical Broadcast Channel
（Physical Broadcast Channel, abbreviation PBCH）Take fixed running time-frequency resource：Subframe 0 second is taken in time domain
Preceding 4 OFDMs on time slot（Orthogonal Frequency Division Multiplexing, referred to as
OFDM）6 resource blocks around center frequency point are taken on symbol, frequency domain（Resource Block, abbreviation RB）, 72 sons altogether
Carrier wave.MIB transmission is at intervals of 10ms, and per 40ms, change is once as a transmission cycle.
SIB is wireless heterogeneous networks（Radio Resource Control, abbreviation RRC）The concept of layer, by different type
Information constitute different SIB, at present in LTE system SIB label from SIB1, SIB2 ... SIB11, and may not
Disconnected increase.System broadcast information is carried out for receiving the time delay of this information according to different information type and UE in LTE
Classify and be distributed in different SIB.
Schedule informations of the SIB1 comprising cell access information and other SIB.SIB1 is fixed on the 5th of even frame in time domain
Sent in individual subframe, dynamic dispatching on frequency domain.SIB1 transmission is at intervals of 20ms, and per 80ms, change once sends week as one
Phase.
SIB2 includes public shared channel information, and SIB3 includes serving cell（serving cell）Cell reselection letter
Breath, SIB4 includes the cell reselection information of adjacent area co-frequency cell, and SIB5 includes the cell reselection information of adjacent area alien-frequency district, SIB6
Include adjacent area universal land radio access web（Universal Terrestrial Radio Access Network, referred to as
UTRAN）The cell reselection information of cell, SIB7 includes GSM EDGE Radio Access Network（GSM/EDGE Radio Access
Network, abbreviation GERAN）Cell reselection information in frequency, cell reselections of the SIB8 comprising adjacent area CDMA2000 cells is believed
Breath, SIB9 includes home eNodeB identifies（Home NodeB Identity, abbreviation HNBID）, SIB10 comprising main earthquake and
Tsunami warning system（Earthquake and Tsunami Warning System, abbreviation ETWS）Information, SIB11 is comprising secondary
The ETWS information wanted.Above SIB dynamic mappings are to system information（System Information, abbreviation SI）, with message
（message）Mode carry.One time window of each SI correspondences（SI window）, the time window be used for distinguish different SI
Message, and assist UE to receive corresponding SI message in time window.SI and SIB mapping relations, SI time window
Degree and SI the transmission cycle all provide as schedule information in SIB1.Above-mentioned SIB is mapped on corresponding SI, network side with
SI message are transmitted for unit, and UE sides receive SI in corresponding SI window and obtain corresponding SIB.Above-mentioned SIB
In time domain in corresponding SI window, the dynamic dispatching on frequency domain.
In order to ensure the compatibility to UE in existing LTE system, RN transmission systems broadcast message follows above-mentioned hair to UE
Send the cycle.When between the wireless connection and RN and UE between Donor-eNB and RN wireless connection running on the same frequency band,
Donor-eNB and RN radio frame boundaries are synchronously alignd, then RN should be received from Donor-eNB on identical running time-frequency resource
System broadcast information, again send system broadcast information to UE.In view of RN isolation between antennas can not ensure that RN is received simultaneously
And transmission, as RN, receive-transmit system broadcast message conflicts mutually on identical running time-frequency resource.As shown in Fig. 2 each grid in figure
Represent a Transmission Time Interval in sequential（Transmission Time Interval, abbreviation TTI）Width（1ms）.Often
Individual radio frames（10ms）Include 10 subframes（1ms）, respectively marked as 0~9.Donor-eNB and RN radio frame boundaries are
Synchronous alignment.In subframe 0 and subframe 5, RN should receive the system broadcast information from Donor-eNB, and it is wide also to send system
Information is broadcast to UE, causes system broadcast information to be collided with each other in RN.
The content of the invention
The technical problem to be solved in the present invention is exactly to propose a kind of method of solving conflict of system broadcast information of relay node,
RN is avoided while receiving the system broadcast information from Donor-eNB and sending system broadcast information to asking that UE leads to a conflict
Topic.
In order to solve the above-mentioned technical problem, the present invention provides a kind of side for solving via node RN conflict of system broadcast information
Method, including：
The RN radio frame boundaries of radio frame boundaries and base station Donor-eNB are set to stagger, Donor-eNB or RN are from status
The offset of radio frame boundaries with RN；
RN receives and sent system broadcast information according to the cycle is sent as defined in Long Term Evolution LTE.
Further, the above method can also have the characteristics that：
If distributing the offset of RN radio frame boundaries by Donor-eNB, the Donor-eNB is believed by system broadcasts
The offset of RN radio frame boundaries is informed RN by breath or dedicated signaling.
Further, the above method can also have the characteristics that：
The offset of RN radio frame boundaries is informed RN by the Donor-eNB by system broadcast information, using as follows
One of mode is realized：
Mode one：The Donor-eNB increases the offset for characterizing radio frame boundaries in existing system broadcast information
Field, the offset of the radio frame boundaries of the RN is write into the field, and the system broadcast information is sent to RN, from
And the offset of RN radio frame boundaries is informed into RN；
Mode two：The Donor-eNB writes the offset of the radio frame boundaries of the RN for transmitting radio frames side
The new system broadcast information of the offset on boundary, and the new system broadcast information is sent to RN, so that by the wireless of RN
The offset of frame boundaries informs RN.
Further, the above method can also have the characteristics that：
The system information block 1 i.e. SIB1 that the schedule information of the new system broadcast information is sent by Donor-eNB is provided,
System information SI mapping relations, the length of time window and transmission cycle are mapped to including system broadcast information.
Further, the above method can also have the characteristics that：
The offset of RN radio frame boundaries is informed RN by the Donor-eNB by dedicated signaling, uses following manner
One of realize：
Mode one：The Donor-eNB increases the word for the offset for characterizing radio frame boundaries in existing dedicated signaling
Section, the field is write by the offset of the radio frame boundaries of the RN, and the dedicated signaling is sent into RN, so that by RN's
The offset of radio frame boundaries informs RN；
Mode two：The Donor-eNB writes the offset of the radio frame boundaries of the RN for transmitting radio frames side
The new dedicated signaling of the offset on boundary, and the new dedicated signaling is sent to RN, so that by RN radio frame boundaries
Offset informs RN.
Further, the above method can also have the characteristics that：
If the offset of RN itself distribution RN radio frame boundaries, RN passes through the offset of the radio frame boundaries special
Use signaled Donor-eNB；
After Donor-eNB is received, according to the offset of RN radio frame boundaries, it is determined that follow-up scheduling sequential.
Further, the above method can also have the characteristics that：
The offset of radio frame boundaries is informed Donor-eNB by the RN by dedicated signaling, uses one of following manner
Realize：
Mode one：The RN increases the field for the offset for characterizing radio frame boundaries in existing dedicated signaling, by nothing
The offset of line frame boundaries writes the field, and the dedicated signaling is sent into Donor-eNB, so that by radio frame boundaries
Offset informs Donor-eNB；
Mode two：The RN writes the offset of radio frame boundaries the new of the offset for transmitting radio frame boundaries
Dedicated signaling, and the new dedicated signaling is sent to Donor-eNB, so that the offset of radio frame boundaries be informed
Donor-eNB。
Further, the above method can also have the characteristics that：
The dedicated signaling refers to：Specify UE dedicated signaling or specified RN dedicated signaling.
In order to solve the above-mentioned technical problem, the present invention provides a kind of side for solving via node RN conflict of system broadcast information
Method, including：
RN set its radio frame boundaries and base station Donor-eNB radio frame boundaries synchronously align, pressed during RN initial power-ons
System broadcast information is read according to the cycle is sent as defined in LTE, subsequently no longer monitoring system broadcast message；
When system broadcast information updates, system broadcast information is informed RN by Donor-eNB by dedicated signaling.
Further, the above method can also have the characteristics that：
When system broadcast information updates, Donor-eNB sends the special letter within the system broadcast information modification cycle
Order, RN changes the beginning border in cycle according to the dedicated signaling in the next system broadcast information for receiving the dedicated signaling
Change system broadcast information.
Further, the above method can also have the characteristics that：
The dedicated signaling only includes the system broadcast information of renewal part,
Or, the dedicated signaling had both included the system broadcast information of renewal part, also the system comprising non-updated section
Broadcast message.
Further, the above method can also have the characteristics that：
The dedicated signaling refers to：Specify UE dedicated signaling or specified RN dedicated signaling.
The present invention can be good at solving RN while the problem of receiving and send conflict of system broadcast information, takes into full account
RN can not take the influence that similar frequency bands receive and send and bring simultaneously, be believed by the reception and transmission system broadcasts for the RN that staggers
The subframe of breath, or change the transfer mode of system broadcast information, so as to avoid RN while receiving and sending system broadcast information.
Brief description of the drawings
Fig. 1 is the schematic network structure using wireless relaying technique；
Fig. 2 is the conflict schematic diagram that RN received and sent simultaneously system broadcast information；
Fig. 3 is the schematic diagram of embodiments of the invention one；
Fig. 4 is the schematic diagram of embodiments of the invention two；
Fig. 5 is the schematic diagram of embodiments of the invention three；
Fig. 6 is the schematic diagram of embodiments of the invention four.
Embodiment
In the present invention, including three kinds of technical schemes：
Technical scheme one, sets RN radio frame boundaries and Donor-eNB radio frame boundaries to stagger, Donor-eNB is
The offset of RN distribution RN radio frame boundaries；RN receives and sent system broadcast information according to the cycle is sent as defined in LTE.
Technical scheme two, sets RN radio frame boundaries and Donor-eNB radio frame boundaries to stagger, RN distributes for itself
The offset of RN radio frame boundaries；RN receives and sent system broadcast information according to the cycle is sent as defined in LTE.
Technical scheme three, set RN radio frame boundaries and Donor-eNB radio frame boundaries synchronously align, on RN is initial
System broadcast information is read according to sending the cycle as defined in LTE when electric, subsequently no longer monitoring system broadcast message；Work as system broadcasts
During information updating, system broadcast information is informed RN by Donor-eNB by dedicated signaling.Dedicated signaling refers to for specifying UE's special
With signaling or for specified RN dedicated signaling.
Below in conjunction with the accompanying drawings and specific embodiment the present invention is described in detail.
Embodiment one, using technical scheme one
As shown in figure 3, indicating how the system of the invention for realizing RN is utilized when receiving and sending system broadcast information
Broadcast message does not conflict：
Each grid represents a TTI width in sequential in figure（1ms）.Each radio frames（10ms）Include 10 subframes
（1ms）, respectively marked as 0~9.
The offset of RN radio frame boundaries is informed RN by Donor-eNB by system broadcast information；
RN receives the system broadcast information of the offset of the radio frame boundaries comprising RN, determines the radio frame boundaries of itself,
System broadcast information is received and sends according to the cycle is sent as defined in LTE.
So make RN receive and send system broadcast information in time domain to stagger, it is ensured that system broadcast information does not conflict.
Wherein, described system broadcast information can be that increase characterizes radio frame boundaries in existing system broadcast information
Offset field or define the offset that new system broadcast information is used to transmit radio frame boundaries；Namely
Say, the offset of RN radio frame boundaries is informed RN by the Donor-eNB by system broadcast information, can be used such as lower section
One of formula is realized：
Mode one：The Donor-eNB increases the offset for characterizing radio frame boundaries in existing system broadcast information
Field, the offset of the radio frame boundaries of the RN is write into the field, and the system broadcast information is sent to RN, from
And the offset of RN radio frame boundaries is informed into RN；
Mode two：The Donor-eNB writes the offset of the radio frame boundaries of the RN for transmitting radio frames side
The new system broadcast information of the offset on boundary, and the new system broadcast information is sent to RN, so that by the wireless of RN
The offset of frame boundaries informs RN.
The schedule information of described new system broadcast information is provided by the Donor-eNB SIB1 sent, including system is wide
Information MAP is broadcast to SI mapping relations, SI window length and transmission cycle.
Embodiment two, using technical scheme one
As shown in figure 4, the offset of RN radio frame boundaries is informed RN by Donor-eNB by dedicated signaling；
RN receives the dedicated signaling of the offset of the radio frame boundaries comprising RN, determines the radio frame boundaries of itself, according to
The transmission cycle as defined in LTE receives and sent system broadcast information.
So make RN receive and send system broadcast information in time domain to stagger, it is ensured that system broadcast information does not conflict.
Wherein, the dedicated signaling refers to specifying UE dedicated signaling or specifies RN dedicated signaling, Ke Yishi
Increase characterizes the field of the offset of radio frame boundaries or defines new dedicated signaling and uses in existing dedicated signaling
In the offset of transmission radio frame boundaries；That is, the Donor-eNB by dedicated signaling by RN radio frame boundaries
Offset informs RN, and one of following manner can be used to realize：
Mode one：The Donor-eNB increases the word for the offset for characterizing radio frame boundaries in existing dedicated signaling
Section, the field is write by the offset of the radio frame boundaries of the RN, and the dedicated signaling is sent into RN, so that by RN's
The offset of radio frame boundaries informs RN；
Mode two：The Donor-eNB writes the offset of the radio frame boundaries of the RN for transmitting radio frames side
The new dedicated signaling of the offset on boundary, and the new dedicated signaling is sent to RN, so that by RN radio frame boundaries
Offset informs RN.
Embodiment three, using technical scheme two
RN is the offset of itself default RN radio frame boundaries；
The offset of the radio frame boundaries is informed Donor-eNB by RN by dedicated signaling, as shown in Figure 5；
After Donor-eNB is received, according to the offset of RN radio frame boundaries, it is determined that follow-up scheduling sequential.
Wherein, the dedicated signaling refers to specifying UE dedicated signaling or specifies RN dedicated signaling, Ke Yishi
Increasing the offset of field sign radio frame boundaries in existing dedicated signaling or defining new dedicated signaling is used for
Transmit the offset of radio frame boundaries；That is, the RN informs the offset of radio frame boundaries by dedicated signaling
Donor-eNB, can use one of following manner to realize：
Mode one：The RN increases the field for the offset for characterizing radio frame boundaries in existing dedicated signaling, by nothing
The offset of line frame boundaries writes the field, and the dedicated signaling is sent into Donor-eNB, so that by radio frame boundaries
Offset informs Donor-eNB；
Mode two：The RN writes the offset of radio frame boundaries the new of the offset for transmitting radio frame boundaries
Dedicated signaling, and the new dedicated signaling is sent to Donor-eNB, so that the offset of radio frame boundaries be informed
Donor-eNB。
Certainly, RN can also use other manner that the offset of radio frame boundaries is informed into Donor-eNB, and the present invention is not done
It is specific to limit.
The offset size of radio frame boundaries described in embodiment one, embodiment two, embodiment three be using subframe as
Unit, and ensure that offset size is not the integral multiple of wireless frame length；
In addition, the offset of the radio frame boundaries described in embodiment one, embodiment two, embodiment three is for different
RN can be identical or different.
Example IV, using technical scheme three
RN set its radio frame boundaries and Donor-eNB radio frame boundaries synchronously align, RN in initial power-on according to
The transmission cycle as defined in LTE reads system broadcast information；
In order to ensure not conflict, follow-up RN no longer monitoring system broadcast messages, the system broadcasts letter sent as Donor-eNB
When breath updates, system broadcast information is informed RN by Donor-eNB by dedicated signaling, as shown in Figure 6.
Wherein, Donor-eNB sends the dedicated signaling within the system broadcast information modification cycle, and RN is receiving special letter
System broadcast information is changed in the beginning border in next system broadcast information modification cycle of order according to dedicated signaling, and described is
The system broadcast message modification cycle provides in system broadcast information.
The dedicated signaling refers to specifying UE dedicated signaling or specifies RN dedicated signaling, can only include more
The system broadcast information of new portion, also can also be comprising non-updated section both comprising the system broadcast information for updating part
System broadcast message.
Certainly, the present invention can also have other various embodiments, ripe in the case of without departing substantially from spirit of the invention and its essence
Various corresponding changes and deformation, but these corresponding changes and change ought can be made according to the present invention by knowing those skilled in the art
Shape should all belong to the protection domain of appended claims of the invention.
Claims (4)
1. a kind of method for solving via node RN conflict of system broadcast information, including：
RN set its radio frame boundaries and base station Donor-eNB radio frame boundaries synchronously align, according to LTE during RN initial power-ons
Defined transmission cycle reads system broadcast information, subsequently no longer monitoring system broadcast message；
When system broadcast information updates, system broadcast information is informed RN by Donor-eNB by dedicated signaling.
2. the method as described in claim 1, it is characterised in that
When system broadcast information updates, Donor-eNB sends the dedicated signaling, RN within the system broadcast information modification cycle
The beginning border in cycle is changed in the next system broadcast information for receiving the dedicated signaling to be changed according to the dedicated signaling
System broadcast information.
3. method as claimed in claim 1 or 2, it is characterised in that
The dedicated signaling only includes the system broadcast information of renewal part,
Or, the dedicated signaling had both included the system broadcast information of renewal part, also the system broadcasts comprising non-updated section
Information.
4. method as claimed in claim 1 or 2, it is characterised in that
The dedicated signaling refers to：Specify UE dedicated signaling or specified RN dedicated signaling.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410021296.5A CN103747482B (en) | 2009-04-28 | 2009-04-28 | A kind of method of solving conflict of system broadcast information of relay node |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101375051A CN101877880A (en) | 2009-04-28 | 2009-04-28 | Method for solving conflict of system broadcast information of relay node |
| CN201410021296.5A CN103747482B (en) | 2009-04-28 | 2009-04-28 | A kind of method of solving conflict of system broadcast information of relay node |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2009101375051A Division CN101877880A (en) | 2009-04-28 | 2009-04-28 | Method for solving conflict of system broadcast information of relay node |
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| CN103747482B true CN103747482B (en) | 2017-09-15 |
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| WO2019210517A1 (en) * | 2018-05-04 | 2019-11-07 | Oppo广东移动通信有限公司 | Wireless communication method, communication device, chip and system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1750444A (en) * | 2005-09-15 | 2006-03-22 | 京信通信技术(广州)有限公司 | Method and system for realizing digital high frequency amplification station by using current SDII network transmission signal |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1750444A (en) * | 2005-09-15 | 2006-03-22 | 京信通信技术(广州)有限公司 | Method and system for realizing digital high frequency amplification station by using current SDII network transmission signal |
Non-Patent Citations (1)
| Title |
|---|
| On the design of relay node for LTE-advanced;Texas Instruments;《3GPP TSG RAN WG1 #56 R1-090593》;20090203;第6-7页 * |
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