CN104640145B - A kind of method and system for solving running time-frequency resource conflict - Google Patents
A kind of method and system for solving running time-frequency resource conflict Download PDFInfo
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- CN104640145B CN104640145B CN201310565490.5A CN201310565490A CN104640145B CN 104640145 B CN104640145 B CN 104640145B CN 201310565490 A CN201310565490 A CN 201310565490A CN 104640145 B CN104640145 B CN 104640145B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
- H04W74/0808—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using carrier sensing, e.g. as in CSMA
- H04W74/0816—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using carrier sensing, e.g. as in CSMA carrier sensing with collision avoidance
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/14—Direct-mode setup
Abstract
The invention provides a kind of method and system for solving running time-frequency resource conflict, this method includes：Main control terminal receives the Physical Resource Block PRB resource occupation information of adjacent main control terminal broadcast, according to the idle PRB resources of the PRB resource occupation information searching；Main control terminal takes the idle PRB resources found, broadcasts the PRB resource occupation information of this main control terminal, and signal is sent to slave terminal；The signal that slave terminal is sent according to main control terminal, judge whether that resource contention occurs, if it is, generation resource contention is reported and resource contention report is sent into the main control terminal；After main control terminal receives the resource contention report, the PRB resources are abandoned, search the PRB resources of free time again.By method and system provided by the invention, the problem of can solve the problem that resource contention between main control terminal adjacent in LTE DMO systems.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of method and system for solving running time-frequency resource conflict.
Background technology
LTE (Long Term Evolution, Long Term Evolution) is by 3GPP (The3rd Generation
Partnership Project, third generation partner program) length of UMTS technical standard organized to set up
Phase evolution.LTE system introduces the critical transmissions technology such as orthogonal frequency division multiplexi and multiple antennas Multiple Input Multiple Output, significantly increases
Spectrum efficiency and message transmission rate are added, and have supported various bandwidth to distribute, frequency spectrum distributes more flexible, power system capacity and covering
It is obviously improved.
Mobile station DMO (Direct Mode Operation, network-off direct-passing pattern) in group system refers to two or two
Direct communication between individual above mobile station, without base station and forwarded.DMO communication range both can be in the network coverage
Region in or the region that is unable to reach of the network coverage, thus DMO patterns are effective expansions to original system communication
Fill.
In LTE DMO systems, adjacent main control terminal takes identical or partly overlapping PRB (Physical simultaneously
Resourse Block, Physical Resource Block) when, there can be resource contention, cause very strong co-channel interference.At present, for LTE
Resource conflict problem in DMO systems between adjacent main control terminal does not solve method effectively also.
The content of the invention
The invention provides it is a kind of solve running time-frequency resource conflict method and system, can solve the problem that adjacent main control terminal it
Between resource contention the problem of.
On the one hand, the invention provides one kind to solve running time-frequency resource conflict between main control terminal under network-off direct-passing pattern DMO
Method, methods described includes：
Main control terminal receives the Physical Resource Block PRB resource occupation information of adjacent main control terminal broadcast, is provided according to the PRB
Source occupied information searches idle PRB resources；
Main control terminal takes the idle PRB resources found, broadcasts the PRB resource occupation information of this main control terminal, to
Slave terminal sends signal；
The signal that slave terminal is sent according to main control terminal, judge whether that resource contention occurs, if it is, generation resource
Resource contention report is simultaneously sent to the main control terminal by conflict report；
After main control terminal receives the resource contention report, the PRB resources are abandoned, search the PRB moneys of free time again
Source.
Further, the PRB resource occupation information for broadcasting this main control terminal, including：Utilize Physical Broadcast Channel
PBCH broadcasts the PRB resource occupation information of this main control terminal.
Further, threshold value corresponding to the measurement amount of a few resource contention is respectively provided in advance,
The signal that the slave terminal is sent according to main control terminal, judge whether that resource contention occurs, including：Slave terminal
The measurement amount of at least one resource contention for the signal that measurement main control terminal is sent, according to the survey of at least one resource contention
Whether the measured value of amount amount crosses corresponding threshold value to judge whether that resource contention occurs.
Further, the measurement amount of at least one resource contention, including：
Reference Signal Received Power RSRP and Signal to Interference plus Noise Ratio SINR；
And/or the RSRP and Traffic Channel block error rate BLER of reference signal；
And/or the interference strength of reference signal.
Further, the threshold value for pre-setting RSRP is -90dBm, and the threshold value for pre-setting SINR is 5dBm, described
The threshold value according to corresponding to whether the measured value of the measurement amount of at least one resource contention is crossed judges whether to provide
Source conflicts, including：
When RSRP measured value is less than 5dBm more than -90dBm and SINR measured value, it is judged to that resource contention occurs；
And/or
The threshold value for pre-setting RSRP is -90dBm, and the threshold value for pre-setting BLER is 20%, described in the basis
Whether the measured value of the measurement amount of at least one resource contention crosses corresponding threshold value to judge whether to occur resource contention, bag
Include：
When RSRP measured value is more than -90dBm and BLER measured value more than 20%, it is judged to that resource contention occurs；
And/or
The threshold value for pre-setting the interference strength of reference signal is -80dBm, described to be rushed according at least one resource
Whether the measured value of prominent measurement amount crosses corresponding threshold value to judge whether to occur resource contention, including：
When the measured value of the interference strength of reference signal is more than -80dBm, it is judged to that resource contention occurs.
On the other hand, the invention provides one kind to solve running time-frequency resource punching between main control terminal under network-off direct-passing pattern DMO
Prominent system, the system include：Main control terminal, slave terminal；
The main control terminal includes：Master control transmitting element, master control receiving unit, searching unit；
Master control receiving unit, for receiving the Physical Resource Block PRB resource occupation information of adjacent main control terminal broadcast, and connect
Receive the resource contention report sent slave terminal；
Searching unit, for the PRB resource occupation information of the adjacent main control terminal received according to the master control receiving unit
Idle PRB resources are searched, and after master control receiving unit receives resource contention report, abandon the PRB resources found, weight
It is new to search idle PRB resources；
The master control transmitting element, the idle PRB resources found for taking searching unit, broadcasts this main control terminal
PRB resource occupation information, to slave terminal send signal；
The slave terminal includes：Subordinate receiving unit, judging unit, subordinate transmitting element；
The subordinate receiving unit, the signal sent for receiving master control transmitting element；
The judging unit, for the signal sent according to main control terminal, judge whether that resource contention occurs, if it is,
Then generate resource contention report；
The subordinate transmitting element, for will determine that the resource contention report of unit generation is sent to the main control terminal.
Further, the master control transmitting element, for broadcasting the PRB of this main control terminal using Physical Broadcast Channel PBCH
Resource occupation information.
Further, the system also includes storage unit, for preserving at least one resource contention pre-set
The corresponding threshold value of measurement amount；
The judging unit, the measurement amount of at least one resource contention for the signal sent for measuring main control terminal, root
According to whether the measured value of the measurement amount of at least one resource contention crosses corresponding threshold value judge whether that resource occurs
Conflict.
Further, the measurement amount of at least one resource contention, including：
Reference Signal Received Power RSRP and Signal to Interference plus Noise Ratio SINR；
And/or the RSRP and Traffic Channel block error rate BLER of reference signal；
And/or the interference strength of reference signal.
Further, the storage unit, for preserving the RSRP threshold value and SINR threshold value that pre-set, its
In, RSRP threshold value is -90dBm, and SINR threshold value is 5dBm；
The judging unit, for when RSRP measured value is less than 5dBm more than -90dBm and SINR measured value, sentencing
It is set to generation resource contention；
And/or
The storage unit, for preserving the RSRP threshold value and BLER threshold value that pre-set, wherein, RSRP's
Threshold value is -90dBm, and BLER threshold value is 20%；
The judging unit, for when RSRP measured value is more than 20% more than -90dBm and BLER measured value, sentencing
It is set to generation resource contention；
And/or
The storage unit, the threshold value of the interference strength for preserving the reference signal pre-set, wherein, with reference to letter
Number the threshold value of interference strength be -80dBm；
The judging unit, when the measured value for the interference strength when reference signal is more than -80dBm, it is judged to occurring
Resource contention.
By a kind of method and system for solving running time-frequency resource conflict provided by the invention, by receiving PRB resource occupation
The idle PRB resources of information searching, the probability of resource contention generation can be reduced, in the mistake that main control terminal communicates with slave terminal
Cheng Zhong, slave terminal by detecting signal that main control terminal is sent judge whether that resource contention occurs, when resource contention occurs
When the slave terminal method reported by resource contention notify main control terminal, main control terminal to receive resource contention report after, put
The PRB resources occupied are abandoned, the PRB resources of free time is searched again, can solve the problem that main control terminal adjacent in LTE DMO systems
Between resource contention the problem of.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
These accompanying drawings obtain other accompanying drawings.
Fig. 1 is the method for running time-frequency resource conflict between main control terminal under a kind of solution DMO that one embodiment of the invention provides
Flow chart；
Fig. 2 is the side of running time-frequency resource conflict between main control terminal under another solution DMO that one embodiment of the invention provides
Method flow chart；
Fig. 3 is the system of running time-frequency resource conflict between main control terminal under a kind of solution DMO that one embodiment of the invention provides
Schematic diagram；
Fig. 4 be that one embodiment of the invention provides it is another solve under DMO running time-frequency resource conflict between main control terminal be
System schematic diagram.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, rather than whole embodiments, based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained on the premise of creative work is not made, belongs to the scope of protection of the invention.
Typical DMO scenes be it is acentric, it is distributed.There may be PRB resource allocation conflicts between adjacent DMO equipment
Problem, cause very strong co-channel interference.Here is two kinds of typical DMO resource allocation scenes：
Scene one：When two main control terminals take identical or partly overlapping PRB resources simultaneously, between main control terminal
There are PRB resource occupation collision problems.
Scene two：After adjacent DMO groups all normal works, because distance or the dynamic change of interference, can also between DMO groups
There is the problem of PRB resource contentions.For example, two groups of DMO equipment have in high building or hillside etc. the shadow region blocked respectively.Shade
The DMO main control terminals in area do not know about the PRB resource service conditions of other neighbouring DMO groups, may used identical because signal blocks
PRB resources and be independent of each other.After the main control terminal in shadow region has gone out shadow region, have between meeting and nearby main control terminal
PRB resource contentions/disturbed condition.
In TETRA (Terrestrial Trunked Radio, land clustered wireless system), DMO channel frequency resources
Marked by systematic unity, the DMO frequencies being used take symbol logo in particular time-slot launch channel.The terminal of cluster group is led to
Overscan takes place frequently existing idle DMO channels frequency.Wherein, the scanning for Tetra DMO free time frequencies and the inspection of channel occupancy symbol
Survey is the important mechanisms of Tetra DMO frequency resource allocations, but is scanned by carrier channel, and system effectiveness is low.It is in TETRA
25KHz narrow-band receiver, when being disturbed between DMO terminals, DMO terminals can be filtered out with reception roll-off filter, letter
As long as road is taken with interferometry within 25KHz.
But LTE DMO systems are a broadband systems, all DMO callings are all in system bandwidth, it is impossible to have marked off
Complete independent DMO channel frequencies.In addition, the bandwidth of roll-off filter is also broadband, it is impossible to other DMO in filtration system bandwidth
Call the channel frequency taken.Therefore, Tetra DMO channel occupancies mechanism and resource contention solution method are not all suitable for LTE
DMO systems.
In order to solve the problems, such as resource contention in LTE DMO systems, solved the embodiments of the invention provide one kind main under DMO
The method of running time-frequency resource conflict between control terminal, referring to Fig. 1, this method includes：
Step 101：Main control terminal receives the PRB resource occupation information of adjacent main control terminal broadcast, is accounted for according to the PRB resources
With the idle PRB resources of information searching；
Step 102：Main control terminal takes the idle PRB resources found, broadcasts the PRB resource occupation of this main control terminal
Information, signal is sent to slave terminal；
Step 103：The signal that slave terminal is sent according to main control terminal, judge whether that resource contention occurs, if it is,
Resource contention report is simultaneously sent to main control terminal by the report of generation resource contention；
Step 104：After main control terminal receives resource contention report, the PRB resources taken are abandoned, are searched again idle
PRB resources.
By the method for running time-frequency resource conflict between main control terminal under a kind of solution DMO provided in an embodiment of the present invention, lead to
Cross and receive the idle PRB resources of PRB resource occupation information searching, the probability of resource contention generation can be reduced, in main control terminal
During being communicated with slave terminal, slave terminal is rushed by detecting the signal that main control terminal is sent to judge whether to occur resource
Prominent, the method that slave terminal is reported by resource contention when resource contention occurs notifies main control terminal, and main control terminal receives
After resource contention report, the PRB resources occupied are abandoned, the PRB resources of free time is searched again, can solve the problem that LTE DMO systems
In system between adjacent main control terminal the problem of resource contention.
Wherein, information, the main control terminals such as interference strength can be included in resource contention report can pass through PBCH
(Physical Broadcast Channel, Physical Broadcast Channel) broadcasts PRB resource occupation information.
The problem of in order to reduce resource contention, when main control terminal has data to send, it is necessary to take PRB resources,
The main control terminal obtains occupied PRB resources by receiving the PRB resource occupation information of adjacent main control terminal broadcast,
Then, an idle PRB resource is taken.After main control terminal takes the idle PRB resources found, main control terminal profit
The PRB resource occupation information of this main control terminal is broadcasted with PBCH, notifies the terminal of surrounding, the PRB moneys shared by this main control terminal
Source.Main control terminal sends broadcast singal by PBCH and receives broadcast singal.Wherein, include in PRB resource occupation information by
The PRB resources of occupancy.
Alternatively, step 102, judged by the corresponding threshold value of the measurement amount of each resource contention, the signal is
It is no to meet quality requirement, therefore, threshold value corresponding to the measurement amount of a few resource contention is respectively provided in advance, to each money
The measurement amount of source conflict sets a corresponding threshold value.At least one money for the signal that slave terminal measurement main control terminal is sent
The measurement amount of source conflict, the threshold value according to corresponding to whether the measured value of the measurement amount of at least one resource contention is crossed are sentenced
It is disconnected whether resource contention to occur.When an only measurement amount, the measurement amount crosses corresponding threshold value, into resource contention model
Enclose, be then judged to that resource contention occurs.When there are multiple measurement amounts, whether threshold value is crossed by multiple measurement amounts, into money
Source conflict range to combine judges whether that resource contention occurs.The measurement for the signal that slave terminal is sent to main control terminal is to be based on
Reference signal, signal quality is weighed by the measurement amount of the resource contention of measuring reference signals.One can be measured
The measurement amount of individual resource contention, the measurement amount that can also measure more than one resource contention are weighed to integrate.Wherein, resource is rushed
The measurement granularity of prominent measurement amount can be the multi-forms such as PRB groups, fractional bandwidth, full bandwidth.
Wherein, the optional RSRP of measurement amount (the Reference Signal Received Power, with reference to letter of resource contention
Number receiving power), SINR (Signal to Interference plus Noise Ratio, Signal to Interference plus Noise Ratio),
BLER (Block Error Rate, Block Error Rate) and reference signal-to-interference intensity.
The RSRP and SINR of reference signal in the signal that slave terminal is sent by measuring main control terminal judge to combine
Whether resource contention is occurred, or the RSRP and BLER of the reference signal in the signal sent by measuring main control terminal combine
Judge whether resource contention occur, judge the power of interference, or the reference letter in the signal sent by measuring main control terminal
Number interference strength.Wherein, RSRP, SINR, BLER, reference signal the measurement amount such as interference strength specific threshold value by network
Planning or network quality require to determine.
The threshold value for pre-setting RSRP is -90dBm, and SINR threshold value is 5dBm, when RSRP measured value be more than -
When 90dBm and SINR measured value are less than 5dBm, illustrate poor signal quality, but Reference Signal Received Power is preferable, signal matter
Amount difference is as caused by resource contention, it is determined that resource contention occurs.
The threshold value for pre-setting RSRP is -90dBm, and BLER threshold value is 20%, when RSRP measured value is more than -
When 90dBm, BLER measured value are more than 20%, illustrate poor signal quality, but Reference Signal Received Power is preferable, signal quality
Difference is as caused by resource contention, it is determined that resource contention occurs.
The threshold value for pre-setting the interference strength of reference signal is -80dBm, when the measurement of the interference strength of reference signal
When value is more than -80dBm, interference is stronger, is judged to that resource contention occurs.
Method provided by the invention is described in detail below by a specific embodiment, referring to Fig. 2, is specifically included：
Step 201：The threshold value for pre-setting RSRP is -90dBm, and SINR threshold value is 5dBm；
Step 202：Information in main control terminal detection PBCH, receive the PRB resource occupation letter of adjacent main control terminal broadcast
Breath；
Step 203：According to the idle PRB resources of the PRB resource occupation information searching received；
Step 204：Idle PRB resources are taken, the PRB resource occupation information of this main control terminal are broadcasted, to slave terminal
Send signal；
Step 205：The RSRP and SINR of reference signal in the signal that slave terminal measurement main control terminal is sent；
Step 206：Judge the RSRP of reference signal measured value and SINR measured value whether cross respectively RSRP and
SINR threshold value；
Step 207a：When RSRP measured value is less than 5dBm more than -90dBm and SINR measured value, then it is judged to sending out
Raw resource contention；
Step 207b：When RSRP measured value is not less than 5dBm more than -90dBm and SINR measured value, then it is determined as
Resource contention does not occur, main control terminal takes the PRB resources, normal work；
Step 207c：When RSRP measured value is not more than -90dBm, then it is determined as that signal is weak, normal work；
Step 208：After generation resource contention, up report is triggered in slave terminal, sends resource contention and reports to master control end
End；
Step 209：After main control terminal receives conflict report, the PRB resources taken are abandoned, perform step 202.
Wherein, slave terminal can also measure the RSRP and BLER of the reference signal that main control terminal is sent, reference signal
The measurement amount of other resource contentions such as interference strength, come the quality of gauge signal and the intensity of interference.
The embodiments of the invention provide the system of running time-frequency resource conflict between main control terminal under a kind of solution DMO, referring to figure
3, the system includes：Main control terminal 301, slave terminal 302；
Main control terminal 301 includes：Master control transmitting element 3011, master control receiving unit 3012, searching unit 3013；
Master control receiving unit 3012, for receiving the PRB resource occupation information of adjacent main control terminal broadcast, and receive subordinate
The resource contention report that terminal is sent；
Searching unit 3013, for the PRB resource occupation of the adjacent main control terminal received according to master control receiving unit 3012
The idle PRB resources of information searching, and after master control receiving unit 3012 receives resource contention report, abandon what is found
PRB resources, the PRB resources of free time are searched again；
Master control transmitting element 3011, the idle PRB resources found for taking searching unit 3013, broadcasts this master control
The PRB resource occupation information of terminal, signal is sent to slave terminal；
Slave terminal 302 includes：Subordinate receiving unit 3021, judging unit 3022, subordinate transmitting element 3023；
Subordinate receiving unit 3021, the signal sent for receiving master control transmitting element 3011；
Judging unit 3022, the signal that the main control terminal for being received according to subordinate receiving unit 3021 is sent, judgement are
No generation resource contention, if it is, generation resource contention report；
Subordinate transmitting element 3023, for will determine that the resource contention report that unit 3022 generates is sent to main control terminal.
Referring to Fig. 4, within the system including the main control terminal 401 in said system, slave terminal 402.Main control terminal 401
Including：Master control transmitting element 4011, master control receiving unit 4012, searching unit 4013；Slave terminal 402 includes：Subordinate receives
Unit 4021, judging unit 4022, subordinate transmitting element 4023.Unit in following systems is optional, can be deposited together
In system, can also unit be present in system.
In order to reduce resource conflict problem, master control transmitting element 4011, for broadcasting the PRB of this main control terminal using PBCH
Resource occupation information.Notice other-end, the PRB resources are occupied.
Judging unit 4022, the survey of at least one resource contention of the signal for measuring the reception of subordinate receiving unit 4021
Amount amount, judge whether that resource contention occurs.
Optionally, the corresponding threshold value of the measurement amount that system passes through each resource contention judges, whether the signal is full
Sufficient quality requirement, therefore, threshold value corresponding to the measurement amount of a resource contention less is respectively provided in advance, is increased in systems
Storage unit 403, the corresponding threshold value of the measurement amount for preserving at least one resource contention pre-set.The preservation
Unit there may also be with terminal.
Judging unit 4022, the measurement amount of at least one resource contention for the signal sent for measuring main control terminal, root
Judge whether to occur resource punching according to whether the measured value of the measurement amount of at least one resource contention crosses corresponding threshold value
It is prominent.
Wherein, more preferably, the measurement amount of resource contention can select the interference of RSRP, SINR, BLER, reference signal strong
Degree.The RSRP and SINR of reference signal in the signal that slave terminal is sent by measuring main control terminal judge whether to combine
Show resource contention, or the RSRP and BLER of the reference signal in the signal sent by measuring main control terminal are to combine judgement
It is no resource contention occur, judge the power of interference, or reference signal in the signal sent by measuring main control terminal is dry
Disturb intensity.Wherein, RSRP, SINR, BLER, reference signal the measurement amount such as interference strength specific threshold value by the network planning or
Network quality requires to determine.
Wherein, storage unit 403, for preserving the RSRP threshold value and SINR threshold value that pre-set, wherein,
RSRP threshold value is -90dBm, and SINR threshold value is 5dBm；
Judging unit 4022, for when RSRP measured value is less than 5dBm more than -90dBm and SINR measured value, sentencing
It is set to generation resource contention.
Secondly, storage unit 403, for preserving the RSRP threshold value and BLER threshold value that pre-set, wherein,
RSRP threshold value is -90dBm, and BLER threshold value is 20%；
Judging unit 4022, for when RSRP measured value is more than 20% more than -90dBm and BLER measured value, sentencing
It is set to generation resource contention.
Again, storage unit 403, the threshold value of the interference strength for preserving the reference signal pre-set, wherein, ginseng
The threshold value for examining the interference strength of signal is -80dBm；
Judging unit 4022, when the measured value for the interference strength when reference signal is more than -80dBm, it is judged to occurring
Resource contention.
In addition, it is necessary to explanation is：In a DMO group, main control terminal and slave terminal be present, when one in DMO groups
When terminal carries out caller, the terminal is main control terminal.Terminal in DMO groups can be used as main control terminal or as from
Belong to terminal.In system provided in an embodiment of the present invention, unit and function that main control terminal and slave terminal have can be simultaneously
It is present in a terminal, when the terminal is as main control terminal, performs the function of main control terminal, when the terminal is whole as subordinate
During end, the function of slave terminal is performed.
It should be noted that：Method and system provided in an embodiment of the present invention is also applied for LTE D2D
(Device2Device) no center control such as pattern or the scene of center control network element failure.
Visible by foregoing description, the embodiment of the present invention has following beneficial effect：
1st, by the method for running time-frequency resource conflict between main control terminal under a kind of solution DMO provided in an embodiment of the present invention and
System, the PRB resource idle by receiving PRB resource occupation information searching, the probability that resource contention occurs can be reduced, in master
During control terminal communicates with slave terminal, slave terminal judges whether to occur by detecting signal that main control terminal is sent
Resource contention, the method that slave terminal is reported by resource contention when resource contention occurs notify main control terminal, main control terminal
After receiving resource contention report, the PRB resources occupied are abandoned, the PRB resources of free time is searched again, can solve the problem that LTE
In DMO systems between adjacent main control terminal the problem of resource contention.
2nd, by method and system provided in an embodiment of the present invention, by broadcasting PRB resource occupation information, other ends are notified
End, the PRB resources shared by this terminal, after other terminals receive the PRB resource occupation information, will not take the PRB again
Resource, resource conflict problem can be reduced.
3rd, method and system provided in an embodiment of the present invention is passed through, it is not necessary to which center control network element participates in, suitable for distribution
Formula main control terminal takes PRB resources, and PRB resource occupation has the scene disturbed and conflicted after being also applied for the change of DMO equipment movings.
4th, PBCH broadcast broadcast institute is utilized by method and system provided in an embodiment of the present invention, each DMO main control terminals
In the information of calling PRB resource occupation, this information helps to understand the resource service condition for closing on DMO main control terminals, reduces dry
Time of measuring is disturbed, improves the reliability of interferometry.
It should be noted that herein, term " comprising ", "comprising" or its any other variant are intended to non-row
His property includes, so that process, method, article or equipment including a series of elements not only include those key elements, and
And also include the other element being not expressly set out, or also include for this process, method, article or equipment institute inherently
Key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that including institute
State and other identical factor in process, method, article or the equipment of key element also be present.
One of ordinary skill in the art will appreciate that：Realizing all or part of step of above method embodiment can pass through
Programmed instruction related hardware is completed, and foregoing program can be stored in computer-readable storage medium, the program
Upon execution, the step of execution includes above method embodiment；And foregoing storage medium includes：ROM, RAM, magnetic disc or light
Disk etc. is various can be with the medium of store program codes.
It is last it should be noted that：Presently preferred embodiments of the present invention is the foregoing is only, is merely to illustrate the skill of the present invention
Art scheme, is not intended to limit the scope of the present invention.Any modification for being made within the spirit and principles of the invention,
Equivalent substitution, improvement etc., are all contained in protection scope of the present invention.
Claims (10)
1. a kind of solve the method for running time-frequency resource conflict between main control terminal under network-off direct-passing pattern DMO, it is characterised in that described
Method includes：
Main control terminal receives the Physical Resource Block PRB resource occupation information of adjacent main control terminal broadcast, is accounted for according to the PRB resources
With the idle PRB resources of information searching；
Main control terminal takes the idle PRB resources found, the PRB resource occupation information of this main control terminal is broadcasted, to subordinate
Terminal sends signal；
The signal that slave terminal is sent according to main control terminal, judge whether that resource contention occurs, if it is, generation resource contention
Report and resource contention report is sent to the main control terminal；
After main control terminal receives the resource contention report, the PRB resources are abandoned, search the PRB resources of free time again.
2. according to the method for claim 1, it is characterised in that the PRB resource occupation information for broadcasting this main control terminal,
Including：The PRB resource occupation information of this main control terminal is broadcasted using Physical Broadcast Channel PBCH.
3. according to the method for claim 1, it is characterised in that be respectively provided to the measurement amount of a few resource contention in advance
Corresponding threshold value,
The signal that the slave terminal is sent according to main control terminal, judge whether that resource contention occurs, including：Slave terminal measures
The measurement amount of at least one resource contention for the signal that main control terminal is sent, according to the measurement amount of at least one resource contention
Measured value whether cross corresponding to threshold value come judge whether occur resource contention.
4. according to the method for claim 3, it is characterised in that the measurement amount of at least one resource contention, including：
Reference Signal Received Power RSRP and Signal to Interference plus Noise Ratio SINR；
And/or the RSRP and Traffic Channel block error rate BLER of reference signal；
And/or the interference strength of reference signal.
5. according to the method for claim 4, it is characterised in that the threshold value for pre-setting RSRP is -90dBm, is set in advance
The threshold value for putting SINR is 5dBm, and whether the measured value of the measurement amount according at least one resource contention is crossed correspondingly
Threshold value come judge whether occur resource contention, including：
When RSRP measured value is less than 5dBm more than -90dBm and SINR measured value, it is judged to that resource contention occurs；
And/or
The threshold value for pre-setting RSRP is -90dBm, and the threshold value for pre-setting BLER is 20%, described in the basis at least
Whether the measured value of the measurement amount of one resource contention crosses corresponding threshold value to judge whether to occur resource contention, including：
When RSRP measured value is more than -90dBm and BLER measured value more than 20%, it is judged to that resource contention occurs；
And/or
The threshold value for pre-setting the interference strength of reference signal is -80dBm, described according at least one resource contention
Whether the measured value of measurement amount crosses corresponding threshold value to judge whether to occur resource contention, including：
When the measured value of the interference strength of reference signal is more than -80dBm, it is judged to that resource contention occurs.
6. a kind of solve the system of running time-frequency resource conflict between main control terminal under network-off direct-passing pattern DMO, it is characterised in that described
System includes：Main control terminal, slave terminal；
The main control terminal includes：Master control transmitting element, master control receiving unit, searching unit；
Master control receiving unit, for receiving the Physical Resource Block PRB resource occupation information of adjacent main control terminal broadcast, and receive from
The resource contention report that category terminal is sent；
Searching unit, for the PRB resource occupation information searchings of the adjacent main control terminal received according to the master control receiving unit
Idle PRB resources, and after master control receiving unit receives resource contention report, abandon the PRB resources found, look into again
Look for the PRB resources of free time；
The master control transmitting element, the idle PRB resources found for taking searching unit, broadcasts this main control terminal
PRB resource occupation information, signal is sent to slave terminal；
The slave terminal includes：Subordinate receiving unit, judging unit, subordinate transmitting element；
The subordinate receiving unit, the signal sent for receiving master control transmitting element；
The judging unit, for the signal sent according to main control terminal, judge whether that resource contention occurs, if it is, raw
Reported into resource contention；
The subordinate transmitting element, for will determine that the resource contention report of unit generation is sent to the main control terminal.
7. system according to claim 6, it is characterised in that the master control transmitting element, for being believed using physical broadcast
Road PBCH broadcasts the PRB resource occupation information of this main control terminal.
8. system according to claim 6, it is characterised in that
The slave terminal also includes storage unit, pair of the measurement amount for preserving at least one resource contention pre-set
The threshold value answered；
The judging unit, the measurement amount of at least one resource contention for the signal sent for measuring main control terminal, according to institute
Whether the measured value for stating the measurement amount of at least one resource contention crosses corresponding threshold value to judge whether that resource contention occurs.
9. system according to claim 8, it is characterised in that the measurement amount of at least one resource contention, including：
Reference Signal Received Power RSRP and Signal to Interference plus Noise Ratio SINR；
And/or the RSRP and Traffic Channel block error rate BLER of reference signal；
And/or the interference strength of reference signal.
10. system according to claim 9, it is characterised in that the storage unit, for preserving the RSRP pre-set
Threshold value and SINR threshold value, wherein, RSRP threshold value is -90dBm, and SINR threshold value is 5dBm；
The judging unit, for when RSRP measured value is less than 5dBm more than -90dBm and SINR measured value, being determined as
Generation resource contention；
And/or
The storage unit, for preserving the RSRP threshold value and BLER threshold value that pre-set, wherein, RSRP thresholding
It is worth for -90dBm, BLER threshold value is 20%；
The judging unit, for when RSRP measured value is more than 20% more than -90dBm and BLER measured value, being determined as
Generation resource contention；
And/or
The storage unit, the threshold value of the interference strength for preserving the reference signal pre-set, wherein, reference signal
The threshold value of interference strength is -80dBm；
The judging unit, when the measured value for the interference strength when reference signal is more than -80dBm, it is judged to that resource occurs
Conflict.
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| CN106488411B (en) * | 2015-08-28 | 2019-08-16 | 普天信息技术有限公司 | The monitoring method of network-off direct-passing terminal resource conflict |
| CN105208662A (en) * | 2015-08-31 | 2015-12-30 | 宇龙计算机通信科技(深圳)有限公司 | D2D communication method, user equipment and base station |
| CN105188020B (en) * | 2015-08-31 | 2019-01-11 | 宇龙计算机通信科技(深圳)有限公司 | D2D communication means, user equipment and base station |
| EP3890220B1 (en) * | 2015-09-14 | 2023-06-14 | Lenovo Innovations Limited (Hong Kong) | Contention window size adjustment in a wireless communication system |
| CN106550461B (en) * | 2015-09-21 | 2020-04-28 | 海能达通信股份有限公司 | Resource using method and terminal |
| CN106612558B (en) * | 2015-10-27 | 2019-10-08 | 普天信息技术有限公司 | A kind of wireless running time-frequency resource contention resolution and DMO terminal |
| WO2017173665A1 (en) * | 2016-04-08 | 2017-10-12 | 华为技术有限公司 | Communication resource coordination method and device |
| CN109155988B (en) * | 2016-05-10 | 2020-10-23 | 华为技术有限公司 | V2V communication method, device and terminal |
| CN108207032A (en) * | 2016-12-16 | 2018-06-26 | 华硕电脑股份有限公司 | The method and apparatus for disposing uplink resource conflict in a wireless communication system |
| CN107484254B (en) * | 2017-09-15 | 2021-05-25 | 中国联合网络通信集团有限公司 | Available resource determination method, device and system |
| JP7213884B2 (en) * | 2018-02-05 | 2023-01-27 | オッポ広東移動通信有限公司 | RESOURCE RESERVATION METHOD AND DEVICE AND COMPUTER STORAGE MEDIUM |
| CN115707135A (en) * | 2021-08-06 | 2023-02-17 | 华为技术有限公司 | Side line transmission method, device and storage medium |
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