CN108271209B - A kind of resource selection method, terminal and base station - Google Patents
A kind of resource selection method, terminal and base station Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0231—Traffic management, e.g. flow control or congestion control based on communication conditions
- H04W28/0236—Traffic management, e.g. flow control or congestion control based on communication conditions radio quality, e.g. interference, losses or delay
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/08—Load balancing or load distribution
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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
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
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Abstract
The present invention provides a kind of resource selection method, terminal and base station, method includes: to obtain the resource occupation information of each resource pool, wherein resource occupation information indicates ratio of the occupied resource in resource pool；When carrying out resource selection, the signal strength of resource to be selected is obtained；According to the resource occupation information wait select the resource pool where resource, signal strength is modified, revised signal strength is obtained；Resource selection is carried out according to revised signal strength.Wherein, revised signal strength and resource occupation information are positively correlated.The present invention is by considering influence of the load difference between multiple resource pools to resource collection, and in the identical resource of energy measurements, the preferential resource for selecting resource load low improves system performance.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of resource selection methods, terminal and base station.
Background technique
In LTE V2X, if there is multicarrier configures, there may be one or more resource pools that send to configure under a carrier wave
To transmission terminal (UE, User Equipment).The resource selection of 4 Ad hoc mode of Mode of current LTE V2X, only
According to energy measurement (RSSI, the Received Signal carried out in the available resources in resource selection window in each subchannel
Strength Indicator), then measurement result is ranked up, is carried out in 20% minimum resource of measurement result random
Selection, to determine the transmission resource of this node.
Current resource selection mode, simply by energy measurement RSSI, although it is contemplated that the influence of interference, that is, work as RSSI
When lower, it is believed that system interference is lower；It sends UE and sends resource on the resource and be disturbed smaller, receiving node has bigger
It may receive successfully.And as RSSI higher, may there are the interference signal of other same frequencies or the influence with interior leakage interference, hair
It send UE to send resource on the resource and is disturbed larger, a possibility that receiving node receives successfully is lower.
But it is possible to which measurement RSSI can only carry out the measurement of energy with bandwidth, the signal condition received can not be confirmed, by
In the influence for receiving the factors such as measurement error, the shake of small magnitude signal, therefore accuracy of measurement is lower；In addition, even if to sending
UE configures multiple resource pools, but does not consider the load difference between multiple resource pools, lower simply by accuracy of measurement
RSSI determines optional resource collection, and load balancing effect is undesirable, can not realize system under the scene that more resource pools configure
Load balancing, influence system performance.
Summary of the invention
The present invention provides a kind of resource selection method, terminal and base station, solves UE in the prior art and is carrying out resource choosing
RSSI is only considered when selecting, can not balanced resource pool load, system performance difference problem.
The embodiment of the present invention provides a kind of resource selection method, is applied to terminal, comprising:
Obtain the resource occupation information of each resource pool, wherein resource occupation information indicates occupied resource in resource pool
In ratio；
When carrying out resource selection, the signal strength of resource to be selected is obtained；
According to the resource occupation information wait select the resource pool where resource, signal strength is modified, is corrected
Signal strength afterwards；Wherein, revised signal strength and resource occupation information are positively correlated；
Resource selection is carried out according to revised signal strength.
Wherein, according to the resource occupation information wait select the resource pool where resource, signal strength is modified, is obtained
The step of revised signal strength, comprising:
By the resource occupation information wait select the resource pool where resource, the product with the signal strength of resource to be selected,
It is determined as revised signal strength.
Wherein, the step of obtaining the resource occupation information of each resource pool, comprising:
Obtain channel busy ratio of each resource pool in each channel busy ratio CBR measurement period in default measurement period
CBR (Channel Busy Ratio) and the resource occupation ratio CR in each resource occupation ratio CR measurement period
(Consumption Ratio)；Wherein, default measurement period includes multiple CBR measurement periods or CR measurement period, CR statistics week
The length of phase is greater than the length of CBR measurement period；
According to the CR in the CBR and each CR measurement period in each CBR measurement period, each resource pool is calculated default
CBR average value and CR average value in measurement period；
By the resource occupation information for being determined as corresponding resource pond with value of CBR average value and CR average value.
Wherein, the step of obtaining the resource occupation information of each resource pool, comprising:
It periodically acquires the CBR of each resource pool and is sent to base station；
Receive the resource occupation information for each resource pool that base station is sent；Wherein, resource occupation information is base station according to more
What the CBR in the corresponding resource pond that a terminal reports was calculated.
Wherein, before the step of receiving the resource occupation information for each resource pool that base station is sent, further includes:
The location information of itself is periodically reported into base station；So that base station determines the adjacent end of terminal according to location information
End, the CBR of each resource pool further reported according to terminal and adjacent end calculate the resource occupation letter in respective resources pond
Breath.
Wherein, the step of resource selection being carried out according to revised signal strength, comprising:
Revised signal strength is subjected to ascending sort, obtains a signal strength sequence；
By the corresponding resource to be selected of top n signal strength in signal strength sequence, it is determined as the available resources of terminal.
Another aspect according to the present invention additionally provides a kind of resource selection method, is applied to base station, comprising:
Receive the channel busy ratio CBR for each resource pool that multiple terminal periodics are sent；
According to the CBR of each resource pool, the resource occupation information of each resource pool is calculated；
The resource occupation information for each resource pool being calculated is sent to corresponding terminal.
Wherein, according to the CBR of each resource pool, the step of calculating the resource occupation information of each resource pool, comprising:
The location information that terminal periodic is sent is received, and determines the adjacent end of terminal according to location information；
According to the CBR for each resource pool that terminal and adjacent end report, the resource occupation letter of each resource pool is calculated
Breath.
Another aspect according to the present invention additionally provides a kind of terminal, comprising:
First obtains module, for obtaining the resource occupation information of each resource pool, wherein resource occupation information indicates quilt
Occupy ratio of the resource in resource pool；
Second obtains module, for obtaining the signal strength of resource to be selected when carrying out resource selection；
Correction module, the resource occupation information for basis wait the resource pool where selecting resource, carries out signal strength
Amendment, obtains revised signal strength；Wherein, revised signal strength and resource occupation information are positively correlated；
Selecting module, for carrying out resource selection according to revised signal strength.
Wherein, correction module includes:
Amending unit, for by wait select the resource pool where resource resource occupation information, with the letter of resource to be selected
The product of number intensity, is determined as revised signal strength.
Wherein, the first acquisition module includes:
First acquisition unit is counted for obtaining in default measurement period each resource pool in each channel busy ratio CBR
Channel busy ratio CBR in the period and resource occupation ratio CR in each resource occupation ratio CR measurement period；Wherein, in advance
If measurement period includes multiple CBR measurement periods or CR measurement period, the length of CR measurement period is greater than the length of CBR measurement period
Degree；
Computing unit, for calculating each according to the CR in the CBR and each CR measurement period in each CBR measurement period
CBR average value and CR average value of a resource pool in default measurement period；
First determining module, for accounting for the resource for being determined as corresponding resource pond with value of CBR average value and CR average value
Use information.
Wherein, the first acquisition module includes:
Second acquisition unit, for periodically acquiring the CBR of each resource pool and being sent to base station；
First receiving unit, the resource occupation information of each resource pool for receiving base station transmission；Wherein, resource occupation
Information is that the CBR in the corresponding resource pond that base station is reported according to multiple terminals is calculated.
Wherein, first module is obtained further include:
The location information of itself is reported to base station for periodicity by reporting unit；So that base station is true according to location information
Determine the adjacent end of terminal, the CBR of each resource pool further reported according to terminal and adjacent end calculates respective resources
The resource occupation information in pond.
Wherein, selecting module includes:
Sequencing unit obtains a signal strength sequence for revised signal strength to be carried out ascending sort；
Second determination unit, for being determined as the corresponding resource to be selected of top n signal strength in signal strength sequence
The available resources of terminal.
Another aspect according to the present invention additionally provides a kind of base station, comprising:
Receiving module, for receiving the channel busy ratio CBR for each resource pool that multiple terminal periodics are sent；
Computing module calculates the resource occupation information of each resource pool for the CBR according to each resource pool；
Sending module, for the resource occupation information for each resource pool being calculated to be sent to corresponding terminal.
Wherein, computing module includes:
Second receiving unit for receiving the location information of terminal periodic transmission, and determines terminal according to location information
Adjacent end；
Second computing unit, the CBR of each resource pool for being reported according to terminal and adjacent end, calculates each money
The resource occupation information in source pond.
The beneficial effect of above-mentioned technical proposal of the invention is: in the scene for supporting multiple resource pool configurations, obtaining each
The occupied information of a resource pool comprehensively considers the signal strength and load condition of each resource pool when carrying out resource selection,
Load lower resource is selected when signal strength is identical, preferentially to improve system performance；In addition, while guaranteeing load balancing
The probability of resource collision can also be reduced.
Detailed description of the invention
Fig. 1 shows the flow charts of the resource selection method of first embodiment of the invention；
Fig. 2 indicates the flow chart of the resource selection method of second embodiment of the invention；
Fig. 3 indicates the flow chart of the resource selection method of third embodiment of the invention；
Fig. 4 indicates the module diagram of the terminal of fourth embodiment of the invention；
Fig. 5 indicates the structural block diagram of the terminal of fifth embodiment of the invention；
Fig. 6 indicates the flow chart of the resource selection method of sixth embodiment of the invention；
Fig. 7 indicates the module diagram of the terminal of seventh embodiment of the invention；
Fig. 8 shows the structural block diagrams of core of the invention net.
Specific embodiment
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.In the following description, such as specific configuration is provided and the specific detail of component is only
In order to help comprehensive understanding the embodiment of the present invention.It therefore, it will be apparent to those skilled in the art that can be to reality described herein
Example is applied to make various changes and modifications without departing from scope and spirit of the present invention.In addition, for clarity and brevity, it is omitted pair
The description of known function and construction.
It should be understood that " one embodiment " or " embodiment " that specification is mentioned in the whole text mean it is related with embodiment
A particular feature, structure, or characteristic is included at least one embodiment of the present invention.Therefore, occur everywhere in the whole instruction
" in one embodiment " or " in one embodiment " not necessarily refer to identical embodiment.In addition, these specific features, knot
Structure or characteristic can combine in any suitable manner in one or more embodiments.
In various embodiments of the present invention, it should be appreciated that the size of the serial number of following each processes is not meant to execute suitable
Sequence it is successive, the execution of each process sequence should be determined by its function and internal logic, the implementation without coping with the embodiment of the present invention
Process constitutes any restriction.
In addition, the terms " system " and " network " are often used interchangeably herein.
In embodiment provided herein, it should be appreciated that " B corresponding with A " indicates that B is associated with A, can be with according to A
Determine B.It is also to be understood that determine that B is not meant to determine B only according to A according to A, it can also be according to A and/or other information
Determine B.
In the embodiment of the present invention, the form for accessing net is unlimited, can be including macro base station (Macro Base Station),
Micro-base station (Pico Base Station), Node B (address of the mobile base station 3G), enhanced base station (eNB), family are enhanced
Base station (Femto eNB or Home eNode B or Home eNB or HeNB), relay station, access point, RRU (Remote Radio
Unit, far-end RF module), the access net of RRH (Remote Radio Head, remote radio head) etc..User terminal can be
Mobile phone (or mobile phone) or other equipment that can send or receive wireless signal, including user equipment, individual digital help
Manage (PDA), radio modem, wireless communication device, hand-held device, laptop computer, wireless phone, wirelessly local time
Road (WLL) stands, movable signal can be converted to the CPE of WiFi signal, and (Customer Premise Equipment, client are whole
End) or intelligent movable hot spot, intelligent appliance or other obstructed remarkable operation energy it is spontaneous be communicated with mobile communications network set
It is standby etc..
Specifically, it the embodiment provides a kind of service conversation processing method, in the prior art can not solve
The problem of PDU session successional to only support section range is handled.
First embodiment
As shown in Figure 1, the embodiment provides a kind of resource selection method, be applied to terminal, specifically include with
Lower step:
Step 11: obtaining the resource occupation information of each resource pool.
Wherein, resource occupation information indicates ratio of the occupied resource in resource pool.Specifically, refer here to provide more
Source pond configures scene, i.e., can select the resource of occupancy needed for itself in multiple resource pools for same terminal.Further, eventually
The resource pool at end includes receiving resource pool and sending resource pool, and terminal carries out connecing for information using the resource received in resource pool
It receives, terminal carries out the transmission of information using the resource sent in resource pool.
Step 12: when carrying out resource selection, obtaining the signal strength of resource to be selected.
When terminal has information transmission, when especially needing to send resource, need to carry out the selection of resource, at this moment in resource
Can be with the signal strength measurement for carrying out each subchannel in resource be sent in selection window, the reception signal obtained on each sub-channels is strong
Degree instruction (RSSI, Received Signal Strength Indicator) information.
Step 13: according to the resource occupation information wait select the resource pool where resource, signal strength being modified, is obtained
To revised signal strength.
Wherein, revised signal strength and resource occupation information are positively correlated.Due to only considering on each sub-channels
Signal strength will cause the load imbalance of resource.The problem of in order to avoid resource load imbalance, the embodiment of the present invention utilize acquisition
To the resource occupation information of each sub-channels the signal strength of corresponding subchannel is modified, obtain revised signal
Intensity.That is, resource occupation information to be determined as to the modifying factor of signal strength, the value of resource occupation information is higher to letter
The influence of number intensity is bigger, and the revised signal strength finally obtained is higher.It is worth noting that the embodiment of the present invention only arranges
Embodiment for resource occupation information as signal strength modifying factor, other radio resource configuration parameters can also be used as signal
The amendment weight of the modifying factor of intensity, different modifying factors can be true according to its influence size to radio resource transfer performance
It is fixed.
Step 14: resource selection is carried out according to revised signal strength.
Revised signal strength considers outside the signal strength of the subchannel of different resource, has also examined each sub-channels
Occupancy situation preferentially selects the lower resource of load when actual signal intensity is identical when carrying out resource selection, with equilibrium system
System resource, improves the transmission performance of system.
Second embodiment
As shown in Fig. 2, the second embodiment of the present invention provides a kind of resource selection method, specifically includes the following steps:
Step 21: obtaining letter of each resource pool in each channel busy ratio CBR measurement period in default measurement period
The road busy ratio CBR and resource occupation ratio CR in each resource occupation ratio CR measurement period.
Wherein, channel busy ratio CBR (Channel Busy Ratio, hereinafter referred to as CBR) and resource occupation ratio CR
(Consumption Ratio, hereinafter referred to as CR) is provided with corresponding measurement period.Default measurement period includes multiple CBR
Measurement period and/or multiple CR measurement periods, the length of CR measurement period are greater than the length of CBR measurement period.Such as: CBR system
The meter period is set as TCBR, in each CBR measurement period, calculate other transmissions terminal (UE) of system in each reception resource pool and occupy
Subchannel and TCBRThe ratio of interior sub-channel resource sum can know each reception resource pool of receiving node by CBR
Occupation condition.In addition, CR measurement period is set as TCR, in each CR measurement period, computing terminal is from each transmission
The ratio for occupying sub-channel resource sum in subchannel and TCR is sent in resource pool, and each hair of the terminal can be known by CR
Send the occupation condition of resource pool.
Further, the default measurement period of each resource pool can it is identical can also be different, and each resource pool is pre-
If measurement period should be preferably set to the CBR measurement period in corresponding resource pond and the common multiple of CR measurement period.
Step 22: according to the CR in the CBR and each CR measurement period in each CBR measurement period, calculating each resource
CBR average value and CR average value of the pond in default measurement period.
Due to including multiple CBR measurement periods or multiple CR measurement periods in default measurement period, and CBR measurement period is small
In CR measurement period, therefore the statistical result of the statistical result number ratio CR of the CBR counted in default measurement period
Number is more.Calculating each resource pool CBR average value and CR average value in default measurement period specifically can refer to following manner realization:
Assuming that the statistic period T of each resource pool occupancy situationpoolFor 2000ms.CBR statistic period TCBRFor representative value 100ms, CR statistics
Cycle TCRFor representative value 1000ms；So in TpoolIt is statistics available in period to obtain 20 CBR statistical results and 2 CR statistics knots
Fruit.Assuming that some resource pool is 5% and 4% in 2 CR statistical results that default measurement period counts, 20 CBR statistics
The results are shown in Table 1:
Table 1
Above-mentioned statistical result can be calculated into CBR average value in the default measurement period by following equation and CR is put down
Mean value.
Wherein, CBRpoolFor CBR average value of the Current resource pond in default measurement period, CBR (i) indicates the resource pool
The CBR counted in default measurement period, M are the number of the CBR counted in default measurement period.It will be in table 1
Data substitute into the formula, and CBR is calculatedpool=52%.It is similar with the mode of above-mentioned calculating CBR average value, CR average value
It can be calculated by following formula:
Wherein, CRpoolFor CR average value of the Current resource pond in default measurement period, CR (j) indicates that the resource pool exists
The CR that statistics obtains in default measurement period, P are the number of the CR counted in default measurement period.Above-mentioned 2 CR are united
Data (5% and 4%) in meter result substitute into the formula, and CR is calculatedpool=4.5%.
Step 23: by the resource occupation information for being determined as corresponding resource pond with value of CBR average value and CR average value.
Specifically, according to RORpool=CBRpool+CRpoolThe value of the resource occupation information in corresponding resource pond is calculated, then on
The value for stating the resource occupation information of resource pool is 56.5%.It is similar to above-mentioned calculating process, the money of other resource pools can be calculated
Source occupied information, it is assumed that the value of the resource occupation information of other two resource pool of terminal is 40% and 35.5%.Wherein, resource
Occupied information is higher, and the load for illustrating the resource pool is higher.
Step 24: when carrying out resource selection, obtaining the signal strength of resource to be selected.
When terminal has information transmission, when especially needing to send resource, need to carry out the selection of resource, at this moment in resource
The signal strength measurement that each subchannel is carried out in transmission resource can be used in selection window.
Step 25: by wait select the resource pool where resource resource occupation information, with the signal strength of resource to be selected
Product, be determined as revised signal strength.
That is, even if the signal strength of terminal measurement is identical, since the resource occupation information in different resource pond is different,
Resource occupation information is multiplied with the signal strength in corresponding resource pond, so that the high resource pool of load actually makes signal strength
Measurement result become larger, (by signal strength ascending order arrangement for) in resource selection process, corresponding resource pool meets low
Sequence may come before the high resource Pooled resources of load.
Step 26: revised signal strength being subjected to ascending sort, obtains a signal strength sequence.
Step 27: by the corresponding resource to be selected of top n signal strength in signal strength sequence, being determined as the available of terminal
Resource.
In addition, also revised signal strength can be subjected to descending arrangement, it in this way can be by N number of letter rear in signal strength sequence
Number corresponding resource to be selected of intensity is determined as the available resources of terminal.Although terminal is random selection available resources, due to money
Source occupied information is corrected signal strength, therefore can reduce the possibility that the higher resource pool of load falls into available resources
Property, to realize balanced system resource, improve the technical effect of the transmission performance of system.
In this way, the resource selection method of second embodiment of the invention, by terminal, each CBR unites in default measurement period
The CR in the CBR and each CR measurement period in the period is counted, and calculates the resource occupation information of itself each resource pool.Specifically,
UE is sent in each transmission resource pool, the signal strength measurement RSSI of sub-channel resource multiplied by resource occupation information ROR,
Revised signal strength is obtained, to screen the available resources of itself, the higher resource pool of load is reduced and falls into available resources
A possibility that, to realize balanced system resource, improve the technical effect of the transmission performance of system.
3rd embodiment
The above second embodiment describes the resource occupation that the CBR arrived that terminal is counted according to itself and CR carries out resource pool
The calculating of information, below the present embodiment introduce base station plan as a whole computing resource occupied information mode.
As shown in figure 3, the second embodiment of the present invention provides a kind of resource selection method, specifically includes the following steps:
Step 31: periodically acquiring the CBR of each resource pool and be sent to base station.
The CBR for each resource pool that measurement obtains is reported to eNB by each UE, and eNB receives some money that multiple UE are reported
The resource occupation information in source pond, calculates the occupation proportion of the resource pool, such as power weightings, the method that is averaged calculate.Assuming that
There are 3 UE (such as A, B, C) to report respective transmission resource pool occupied information CBR to eNB respectively, wherein terminal A configuration sends money
Source pond P1 and P2；Terminal B configuration sends resource pool P1 and P3；Terminal C configuration sends resource pool P2 and P3.ENB receives terminal A, B
It is as shown in table 2 with the CBR of the C each resource pool reported:
Table 2
In this way, eNB calculates accounting for for the resource pool according to the resource occupation information for receiving some resource pool that multiple UE are reported
It is calculated with the method that ratio, such as use are averaged: CBR=(60%+40%)/2=50% of P1, the CBR=(50%+ of P2
70%) CBR=(30%+34%)/2=32% of/2=60%, P3, eNB is periodically each resource pool after the completion of calculating
Resource occupation information allocating respectively send UE.
Step 32: receiving the resource occupation information for each resource pool that base station is sent.
Wherein, resource occupation information is that the CBR in the corresponding resource pond that base station is reported according to multiple terminals is calculated.
Due to being configured with identical resource pool apart from farther away terminal, but its case where respectively occupying resource pool, is not
Can have an adverse effect, in order to eliminate the influence error of the resource occupation information between farther away terminal, before step 32,
The resource selection method may further comprise: the step of location information of itself is periodically reported to base station, so that base station root
The adjacent end of terminal is determined according to location information, the CBR of each resource pool further reported according to terminal and adjacent end
Calculate the resource occupation information in respective resources pond.In this way, base station calculates respective resources according to the CBR that the terminal being closer reports
The resource occupation information in pond, and then eliminate the resource collision problem for the terminal being closer.
Step 33: when carrying out resource selection, obtaining the signal strength of resource to be selected.
Step 34: by wait select the resource pool where resource resource occupation information, with the signal strength of resource to be selected
Product, be determined as revised signal strength.
Resource occupation information is multiplied with the signal strength in corresponding resource pond, so that the high resource pool of load actually makes
The measurement result of signal strength becomes larger, by taking terminal A as an example, according in each transmission resource pool during resource selection, and antithetical phrase
Channel resource measurement result RSSI multiplied by the eNB resource pool configured resource occupation information.Even if the RSSI in different resource pond is real
Border measured value is identical, and due to the resource occupation information of the resource pool configured multiplied by eNB, value is suitable after the RSSI processing of each resource pool
Sequence is followed successively by P2 > P1 > P3.The high resource pool of load actually makes RSSI result become larger, and causes in resource selection process
Before RSSI sequence can come the high resource Pooled resources of load, a possibility that falling into measurement result minimum 20% resource reduction.
Step 35: revised signal strength being subjected to ascending sort, obtains a signal strength sequence.
Step 36: by the corresponding resource to be selected of top n signal strength in signal strength sequence, being determined as the available of terminal
Resource.
Signal strength (RSSI) after correcting process is ranked up, in 20% minimum resource of measurement result carry out with
Machine selects the transmission resource of this terminal.
In this way, the resource selection method of third embodiment of the invention, eNB receives multiple UE (UE being especially closer)
The resource occupation information of some resource pool reported calculates the resource occupation information of each resource pool；And periodically each money
The resource occupation information in source pond is sent to each transmission UE；UE is during resource selection, according to the antithetical phrase in each transmission resource pool
Channel resource measurement result RSSI multiplied by the eNB resource pool configured resource occupation information to the signal strength of each resource pool into
Row amendment reduces a possibility that higher resource pool of load falls into available resources to screen the available resources of itself, to realize
Balanced system resource improves the technical effect of the transmission performance of system.
To sum up, in the scene for supporting more resource pool configurations, first embodiment to 3rd embodiment considers multiple resources
Load difference between pond has an impact the optional resource collection during resource selection, in the feelings of identical energy measurement result
Under condition, a possibility that high resource of resource load enters optional available resources is reduced, the low resource of resource load is increased
A possibility that into optional available resources, maintain the randomness of resource selection.While carrying out load balancing,
The probability of resource collision can be reduced, system performance is improved.
Fourth embodiment
First embodiment above to 3rd embodiment respectively just resource selection method of the invention make introduction, below this reality
Its corresponding terminal will be described further in conjunction with attached drawing by applying example.
Specifically, as shown in figure 4, the terminal 400 of the embodiment of the present invention, comprising:
First obtains module 410, for obtaining the resource occupation information of each resource pool, wherein resource occupation information table
Show ratio of the occupied resource in resource pool；
Second obtains module 420, for obtaining the signal strength of resource to be selected when carrying out resource selection；
Correction module 430, for according to the resource occupation information wait select the resource pool where resource, to signal strength into
Row amendment, obtains revised signal strength；Wherein, revised signal strength and resource occupation information are positively correlated；
Selecting module 440, for carrying out resource selection according to revised signal strength.
Wherein, correction module 430 includes:
Amending unit, for by wait select the resource pool where resource resource occupation information, with the letter of resource to be selected
The product of number intensity, is determined as revised signal strength.
Wherein, the first acquisition module 410 includes:
First acquisition unit is counted for obtaining in default measurement period each resource pool in each channel busy ratio CBR
Channel busy ratio CBR in the period and resource occupation ratio CR in each resource occupation ratio CR measurement period；Wherein, in advance
If measurement period includes multiple CBR measurement periods or CR measurement period, the length of CR measurement period is greater than the length of CBR measurement period
Degree；
Computing unit, for calculating each according to the CR in the CBR and each CR measurement period in each CBR measurement period
CBR average value and CR average value of a resource pool in default measurement period；
First determining module, for accounting for the resource for being determined as corresponding resource pond with value of CBR average value and CR average value
Use information.
Wherein, the first acquisition module 410 includes:
Second acquisition unit, for periodically acquiring the CBR of each resource pool and being sent to base station；
First receiving unit, the resource occupation information of each resource pool for receiving base station transmission；Wherein, resource occupation
Information is that the CBR in the corresponding resource pond that base station is reported according to multiple terminals is calculated.
Wherein, first module 410 is obtained further include:
The location information of itself is reported to base station for periodicity by reporting unit；So that base station is true according to location information
Determine the adjacent end of terminal, the CBR of each resource pool further reported according to terminal and adjacent end calculates respective resources
The resource occupation information in pond.
Wherein, selecting module 440 includes:
Sequencing unit obtains a signal strength sequence for revised signal strength to be carried out ascending sort；
Second determination unit, for being determined as the corresponding resource to be selected of top n signal strength in signal strength sequence
The available resources of terminal.
Terminal embodiment of the invention is terminal corresponding with the embodiment of above-mentioned resource selection method, and the above method is implemented
All realization rates in example can also reach identical technical effect suitable for the embodiment of the terminal.The terminal is being propped up
In the scene for holding multiple resource pool configurations, the occupied information of each resource pool is obtained, is comprehensively considered when carrying out resource selection each
The signal strength and load condition of a resource pool preferentially select the lower resource of load when signal strength is identical, are to improve
System performance；In addition, in the probability for guaranteeing that resource collision can also be reduced while load balancing.
5th embodiment
As shown in figure 5, the present embodiment provides a kind of terminals, comprising:
Processor 510；And the memory 530 being connected by bus interface 520 with the processor 510, it is described to deposit
Reservoir 530 is for storing the processor 510 used program and data when executing operation, when processor 510 calls simultaneously
When executing the program and data stored in the memory 530, following process is executed:
Processor 510 obtains the resource occupation information of each resource pool, wherein resource occupation information indicates occupied resource
Ratio in resource pool；
When carrying out resource selection, processor 510 further obtains the signal strength of resource to be selected；
Processor 510 also further executes: according to the resource occupation information wait select the resource pool where resource, to signal
Intensity is modified, and obtains revised signal strength；And resource selection is further carried out according to revised signal strength.Its
In, revised signal strength and resource occupation information are positively correlated.
Wherein, transceiver 540 is connect with bus interface 520, for sending and receiving number under the control of the processor 510
According to.
It should be noted that bus architecture may include the bus and bridge of any number of interconnection in Fig. 5, specifically by
The various circuits for the memory that the one or more processors and memory 530 that processor 510 represents represent link together.Always
Various other circuits of such as peripheral equipment, voltage-stablizer and management circuit or the like can also be linked at one by line architecture
It rises, these are all it is known in the art, and therefore, it will not be further described herein.Bus interface provides interface.It receives
Hair machine 540 can be multiple element, that is, include transmitter and transceiver, provide for over a transmission medium with various other devices
The unit of communication.For different terminals, user interface 550, which can also be, external can be inscribed the interface for needing equipment, connection
Equipment include but is not limited to keypad, display, loudspeaker, microphone, control stick etc..Processor 510 is responsible for management bus
Framework and common processing, memory 530 can store the used data when executing operation of processor 510.
It will be understood by those skilled in the art that realize above-described embodiment all or part of step can by hardware come
It completes, relevant hardware can also be indicated by computer program to complete, the computer program includes executing above-mentioned side
The instruction of some or all of step of method；And the computer program can store in a readable storage medium storing program for executing, storage medium
It may be any type of storage medium.
Sixth embodiment
First embodiment above waits for that side describes the resource selection of the embodiment of the present invention respectively with regard to terminal to the 5th embodiment
Method and corresponding terminal, below the present embodiment will be done further in conjunction with resource selection method of the attached drawing to its network side
Explanation.
Specifically, as shown in fig. 6, the resource selection method of the embodiment of the present invention, is applied to base station, specifically includes following step
It is rapid:
Step 61: receiving the channel busy ratio CBR for each resource pool that multiple terminal periodics are sent.
The CBR for each resource pool that measurement obtains is reported to eNB by each UE, and eNB receives some money that multiple UE are reported
The resource occupation information in source pond, calculates the occupation proportion of the resource pool, such as power weightings, the method that is averaged calculate.
Step 62: according to the CBR of each resource pool, calculating the resource occupation information of each resource pool.
ENB calculates the occupancy ratio of the resource pool according to the resource occupation information for receiving some resource pool that multiple UE are reported
Example, as calculated using the method being averaged.
Specifically, due to being configured with identical resource pool apart from farther away terminal, but it respectively occupies resource pool
Situation can't have an adverse effect, can be according in order to eliminate the influence error of the resource occupation information between farther away terminal
It is realized according to following steps: receiving the location information that terminal periodic is sent, and determine the adjacent end of terminal according to the location information
End；According to the CBR for each resource pool that terminal and adjacent end report, the resource occupation information of each resource pool is calculated.This
Sample, the CBR that base station is reported according to the terminal being closer calculate the resource occupation information in respective resources pond, so eliminate distance compared with
The resource collision problem of close terminal.
Step 63: the resource occupation information for each resource pool being calculated is sent to corresponding terminal.
The resource occupation information for each resource pool being calculated periodically is sent to each transmission UE by eNB, in order to
UE sends what sub-channel resource measurement result RSSI in resource pool was configured multiplied by eNB during resource selection, according to each
The mode of the resource occupation information of resource pool is modified signal strength, to screen the available resources of itself, reduces load
A possibility that higher resource pool falls into available resources improves the technology of the transmission performance of system to realize balanced system resource
Effect.
7th embodiment
The above sixth embodiment makes introduction with regard to resource selection method of the invention, below the present embodiment will be in conjunction with attached drawing pair
Its corresponding base station is described further.
Specifically, as shown in fig. 7, the base station 700 of the embodiment of the present invention, comprising:
Receiving module 710, for receiving the channel busy ratio CBR for each resource pool that multiple terminal periodics are sent；
Computing module 720 calculates the resource occupation information of each resource pool for the CBR according to each resource pool；
Sending module 730, for the resource occupation information for each resource pool being calculated to be sent to corresponding terminal.
Wherein, computing module 720 includes:
Second receiving unit for receiving the location information of terminal periodic transmission, and determines terminal according to location information
Adjacent end；
Second computing unit, the CBR of each resource pool for being reported according to terminal and adjacent end, calculates each money
The resource occupation information in source pond.
Base station embodiment of the invention is base station corresponding with the embodiment of above-mentioned resource selection method, and the above method is implemented
All realization rates in example can also reach identical technical effect suitable for the embodiment of the base station.The base station.
8th embodiment
In order to preferably realize above-mentioned purpose, as shown in figure 8, the sixth embodiment of the present invention additionally provides a kind of base station,
The base station includes: processor 800；The memory 820 being connected by bus interface with the processor 800, and by total
The transceiver 810 that line interface is connected with processor 800；The memory 820 is executing operation for storing the processor
When used program and data；Data information or pilot tone are sent by the transceiver 810, also passes through the transceiver
810 receive uplink control channel；When processor 800 calls and executes the program and data stored in the memory 820,
Realize following functional module:
Receiving module, for receiving the channel busy ratio CBR for each resource pool that multiple terminal periodics are sent；
Computing module calculates the resource occupation information of each resource pool for the CBR according to each resource pool；
Sending module, for the resource occupation information for each resource pool being calculated to be sent to corresponding terminal.
Processor 800 is used to read program in memory 820, executes following process: according to the CBR of each resource pool,
Calculate the resource occupation information of each resource pool.
Transceiver 810 specifically executes following process for sending and receiving data under the control of processor 800: receiving
The CBR for each resource pool that multiple terminal periodics are sent, and by the resource occupation information for each resource pool being calculated
It is sent to corresponding terminal.
Wherein, in fig. 8, bus architecture may include the bus and bridge of any number of interconnection, specifically by processor 800
The various circuits for the memory that the one or more processors and memory 820 of representative represent link together.Bus architecture is also
Various other circuits of such as peripheral equipment, voltage-stablizer and management circuit or the like can be linked together, these are all
It is it is known in the art, therefore, it will not be further described herein.Bus interface provides interface.Transceiver 810 can
To be multiple element, that is, includes transmitter and transceiver, the list for communicating over a transmission medium with various other devices is provided
Member.Processor 800, which is responsible for management bus architecture and common processing, memory 820, can store processor 800 and is executing operation
When used data.
In addition it should be pointed out that in the apparatus and method of the present invention, it is clear that each component or each step are can to divide
It solves and/or reconfigures.These, which decompose and/or reconfigure, should be regarded as equivalent scheme of the invention.Also, execute above-mentioned system
The step of column processing, can execute according to the sequence of explanation in chronological order naturally, but not need centainly suitable according to the time
Sequence executes, and certain steps can execute parallel or independently of one another.For those of ordinary skill in the art, it is to be understood that this
The whole or any steps or component of the method and apparatus of invention, can any computing device (including processor, storage
Medium etc.) perhaps to be realized with hardware, firmware, software or their combination in the network of computing device, this is this field
Basic programming skill of the those of ordinary skill in the case where having read explanation of the invention with them can be achieved with.
Therefore, the purpose of the present invention can also by run on any computing device a program or batch processing come
It realizes.The computing device can be well known fexible unit.Therefore, the purpose of the present invention can also include only by offer
The program product of the program code of the method or device is realized to realize.That is, such program product is also constituted
The present invention, and the storage medium for being stored with such program product also constitutes the present invention.Obviously, the storage medium can be
Any well known storage medium or any storage medium that developed in the future.It may also be noted that of the invention
In device and method, it is clear that each component or each step can be decomposed and/or be reconfigured.These decomposition and/or again group
Conjunction should be regarded as equivalent scheme of the invention.Also, the step of executing above-mentioned series of processes can be naturally according to the sequence of explanation
It executes in chronological order, but does not need centainly to execute sequentially in time.Certain steps can parallel or independently of one another
It executes.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (14)
1. a kind of resource selection method is applied to terminal characterized by comprising
Obtain the resource occupation information of each resource pool, wherein the resource occupation information is according to the terminal and described
What the channel busy ratio CBR for each resource pool that the adjacent end of terminal reports was calculated, for indicating that occupied resource exists
Ratio in the resource pool；
When carrying out resource selection, the signal strength of resource to be selected is obtained；
According to the resource occupation information wait select the resource pool where resource, the signal strength is modified, is obtained
Revised signal strength；Wherein, revised signal strength and the resource occupation information are positively correlated；
Resource selection is carried out according to revised signal strength.
2. resource selection method according to claim 1, which is characterized in that it is described according to wait where selecting resource
The resource occupation information of resource pool, the step of being modified to the signal strength, obtain revised signal strength, comprising:
Multiply by the resource occupation information wait select the resource pool where resource, with the signal strength of the resource to be selected
Product, is determined as revised signal strength.
3. resource selection method according to claim 1, which is characterized in that the resource occupation for obtaining each resource pool
The step of information, comprising:
Obtain channel busy ratio CBR in each channel busy ratio CBR measurement period of each resource pool in default measurement period,
And the resource occupation ratio CR in each resource occupation ratio CR measurement period；Wherein, the default measurement period includes multiple
CBR measurement period or CR measurement period, the length of the CR measurement period are greater than the length of CBR measurement period；
According to the CR in the CBR and each CR measurement period in each CBR measurement period, each resource pool is calculated in default statistics
CBR average value and CR average value in period；
By the resource occupation information for being determined as corresponding resource pond with value of the CBR average value and CR average value.
4. resource selection method according to claim 1, which is characterized in that the resource occupation for obtaining each resource pool
The step of information, comprising:
It periodically acquires the CBR of each resource pool and is sent to base station；
Receive the resource occupation information for each resource pool that the base station is sent；Wherein, the resource occupation information is the base
The CBR in the corresponding resource pond that is reported according to multiple terminals of standing is calculated.
5. resource selection method according to claim 4, which is characterized in that each money for receiving the base station and sending
Before the step of resource occupation information in source pond, further includes:
The location information of itself is periodically reported into base station；So that base station determines the phase of the terminal according to the positional information
Adjacent terminal, the CBR of each resource pool further reported according to the terminal and adjacent end calculate the money in respective resources pond
Source occupied information.
6. resource selection method according to claim 1, which is characterized in that described to be carried out according to revised signal strength
The step of resource selection, comprising:
Revised signal strength is subjected to ascending sort, obtains a signal strength sequence；
By the corresponding resource to be selected of top n signal strength in the signal strength sequence, it is determined as the available resources of terminal.
7. a kind of resource selection method is applied to base station characterized by comprising
Receive the channel busy ratio CBR for each resource pool that multiple terminal periodics are sent；
The location information that terminal periodic is sent is received, and determines the adjacent end of the terminal according to the positional information；
According to the CBR for each resource pool that the terminal and adjacent end report, the resource occupation letter of each resource pool is calculated
Breath；
The resource occupation information for each resource pool being calculated is sent to corresponding terminal, so that corresponding terminal can
According to the resource occupation information wait select the resource pool where resource, the signal strength for treating selection resource is modified, obtains
Revised signal strength, and resource selection is carried out according to revised signal strength.
8. a kind of terminal characterized by comprising
First obtains module, for obtaining the resource occupation information of each resource pool, wherein the resource occupation information is basis
What the channel busy ratio CBR for each resource pool that the adjacent end of the terminal and the terminal reports was calculated, it is used for
Indicate ratio of the occupied resource in the resource pool；
Second obtains module, for obtaining the signal strength of resource to be selected when carrying out resource selection；
Correction module, for according to the resource occupation information wait select the resource pool where resource, to the signal strength
It is modified, obtains revised signal strength；Wherein, revised signal strength and the resource occupation information are positively correlated；
Selecting module, for carrying out resource selection according to revised signal strength.
9. terminal according to claim 8, which is characterized in that the correction module includes:
Amending unit, for by the resource occupation information wait select the resource pool where resource, with the resource to be selected
Signal strength product, be determined as revised signal strength.
10. terminal according to claim 8, which is characterized in that described first, which obtains module, includes:
First acquisition unit, for obtaining in default measurement period each resource pool in each channel busy ratio CBR measurement period
The interior channel busy ratio CBR and resource occupation ratio CR in each resource occupation ratio CR measurement period；Wherein, described pre-
If measurement period includes multiple CBR measurement periods or CR measurement period, the length of the CR measurement period is greater than CBR measurement period
Length；
Computing unit, for calculating each money according to the CR in the CBR and each CR measurement period in each CBR measurement period
CBR average value and CR average value of the source pond in default measurement period；
First determining module, for accounting for the resource for being determined as corresponding resource pond with value of the CBR average value and CR average value
Use information.
11. terminal according to claim 8, which is characterized in that described first, which obtains module, includes:
Second acquisition unit, for periodically acquiring the CBR of each resource pool and being sent to base station；
First receiving unit, for receiving the resource occupation information for each resource pool that the base station is sent；Wherein, the resource
Occupied information is that the CBR in the corresponding resource pond that the base station is reported according to multiple terminals is calculated.
12. terminal according to claim 11, which is characterized in that described first obtains module further include:
The location information of itself is reported to base station for periodicity by reporting unit；So that base station is true according to the positional information
The CBR of the adjacent end of the fixed terminal, each resource pool further reported according to the terminal and adjacent end is calculated
The resource occupation information in respective resources pond.
13. terminal according to claim 8, which is characterized in that the selecting module includes:
Sequencing unit obtains a signal strength sequence for revised signal strength to be carried out ascending sort；
Second determination unit, for being determined as the corresponding resource to be selected of top n signal strength in the signal strength sequence
The available resources of terminal.
14. a kind of base station characterized by comprising
Receiving module, for receiving the channel busy ratio CBR for each resource pool that multiple terminal periodics are sent；
Computing module, including the second receiving unit, for receiving the location information of terminal periodic transmission, and according to the position
Information determines the adjacent end of the terminal；
The computing module further includes the second computing unit, each resource for being reported according to the terminal and adjacent end
The CBR in pond calculates the resource occupation information of each resource pool；
Sending module, for the resource occupation information for each resource pool being calculated to be sent to corresponding terminal, so that
Corresponding terminal can treat the signal strength of selection resource according to the resource occupation information wait select the resource pool where resource
It is modified, obtains revised signal strength, and resource selection is carried out according to revised signal strength.
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| JP2022513276A (en) * | 2018-12-17 | 2022-02-07 | フラウンホーファー－ゲゼルシャフト ツル フェルデルング デル アンゲヴァンテン フォルシュング エー ファウ | Methods and devices for controlling congestion in communication networks |
| CN114513269B (en) * | 2020-11-17 | 2023-05-02 | 大唐移动通信设备有限公司 | Processing method and device of resource selection window, terminal and readable storage medium |
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| CN106165524A (en) * | 2014-01-29 | 2016-11-23 | 交互数字专利控股公司 | Find for device-to-device or the resource selection of communication |
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Address after: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee after: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY |
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Effective date of registration: 20210604 Address after: 100085 1st floor, building 1, yard 5, Shangdi East Road, Haidian District, Beijing Patentee after: DATANG MOBILE COMMUNICATIONS EQUIPMENT Co.,Ltd. Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY |