CN105472742B - Resource allocation methods, equipment and system in a kind of LTE multihop networks - Google Patents
Resource allocation methods, equipment and system in a kind of LTE multihop networks Download PDFInfo
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Abstract
The invention discloses resource allocation methods, equipment and the systems in a kind of LTE multihop networks.This method includes：Base station is matched according to channel state information between non-occupied terminal and communication terminal, non-occupied terminal and base station with the performance indicator of setting, and using matched at least one non-occupied terminal as link terminal；Communication terminal and link terminal are grouped, the link in terminal and base station subframe between link terminal and base station distributes idling-resource；The idling-resource in link distribution resource pool in terminal and terminal subframe between communication terminal and link terminal, according to each link rate, judge the link rate for whether being more than communication terminal and base station direct communication using the link rate of link terminal, if it is, data are then forwarded between communication terminal and base station by link terminal, otherwise, communication terminal directly with base station transmission data.The present invention reduces interference in system, and system performance is improved under the premise of not increasing lower deployment cost.
Description
Technical field
The present invention relates in mobile communication technology field more particularly to a kind of LTE multihop networks resource allocation methods, set
Standby and system.
Background technology
In recent years, with the rapid development of wireless traffic, mobile subscriber's quantity rapidly increases, type of business and bandwidth demand
Also constantly increase.Therefore, next-generation wideband cellular communication system requires higher spectrum efficiency and wider array of coverage area.
Become as a kind of key technology for being capable of providing high-speed, extensively covering, relay cellular network in cellular network
Research hotspot in recent years.
Resource allocation methods in existing junction network are mainly multiplexed access link and are returned by the way of time-division or frequency division
Pass link.Class1 is relayed, is considered as that there is micro-base station (Pico) node with interior passback, may be used and base station phase
Same resource allocation methods；Type 2 is relayed, is transparent transmission relative to terminal, excessively complicated money need not be designed
Source distribution method.
However, in order to meet wireless traffic growth requirement, it may be necessary to a large amount of relay station is disposed, to cause great number
Construction cost and O＆M cost.
Terminal direct connection technology is another key technology for effectively improving spectrum efficiency in the following mobile cellular network.
Terminal direct connection technology refers to that the closer terminal of distance is directly communicated under the control of a network, terminal direct connection technology
Resource allocation methods mainly consider the communication between two directinterminations, pass through effective Modes of Sharing Resources, improve system
The availability of frequency spectrum.Moreover, which can also effectively mitigate network load, reduce battery of mobile terminal power consumption.
However, in practical communication, while the application scenarios for thering is business demand and the closer terminal of distance to communicate
And it is not true to type.Therefore, there are limitations for the application of the technology.
In order to not increasing network deployment and under the premise of O＆M cost, preferably promoted cellular network covering and
Capacity, 3GPP and the country IMT-2020 (5G) propulsion group are considering to introduce multi-hop network technology, i.e., hollow using cellular system
Not busy terminal is that communication terminal promotes covering/capacity as relaying.
The single-link of traditional terminal to base station is become terminal-to-terminal service relaying, terminal by the introducing of multi-hop network technology
It is relayed to the multilink of base station, the increase of link causes interference with that environment is more complicated, thus traditional Resource Allocation Formula is no longer
It is applicable in.How in multihop network the resources such as reasonable disposition time domain, frequency domain, effectively reduce interference in system, it is whole to improve system
Performance becomes the problem of urgent need to resolve.
Invention content
The technical problem to be solved by the present invention is to how reduce in system to interfere, and improve system performance.
According to an aspect of the present invention, the resource allocation methods in a kind of LTE multihop networks are proposed, including：
Channel state information between base station getting frame configuration information, base station RB occupancy situations, communication terminal and non-occupied terminal,
Channel state information between non-occupied terminal and base station between channel state information and communication terminal and base station；
According to the performance indicator of channel state information and setting between non-occupied terminal and communication terminal, non-occupied terminal and base station
It is matched, and using matched at least one non-occupied terminal as link terminal；
Communication terminal and link terminal are grouped according to geographical location information residing for communication terminal and link terminal, and
And it is divided into same group by communication terminal and for the selected link terminal of the communication terminal；
The idle money of link distribution of (normal LTE subframes) between link terminal and base station in terminal and base station subframe
Source；
The idle money in link distribution resource pool in terminal and terminal subframe between communication terminal and link terminal
Source, wherein base station is in the burst using the resource of setting ratio as resource pool；
The link rate for forwarding data using link terminal is known according to acquired channel state information, and judges the chain
Whether road rate is more than the link rate of communication terminal and base station direct communication, if it is, forwarding communication eventually by link terminal
Hold base station between data, otherwise, communication terminal directly with base station transmission data.
Further, if selecting multiple non-occupied terminals as link terminal, according between multiple link terminals and base station
Channel state information and multiple link terminals and communication terminal between channel state information know using it is multiple it is idle eventually
The link rate as relay forwarding data is held, and judges whether the rate is more than the link of communication terminal and base station direct communication
Rate, if it is, forwarding data between communication terminal and base station by link terminal, otherwise, communication terminal is directly passed with base station
Transmission of data.
Further, base station receives the relaying signaling that non-occupied terminal is sent, and communication terminal is obtained by demodulating the relaying signaling
Channel state information between non-occupied terminal；
Wherein, non-occupied terminal receives the signaling of communication terminal broadcast, and communication terminal and free time are obtained by demodulating the signaling
Channel state information between terminal, and send base station to by relaying signaling.
According to an aspect of the present invention, the resource allocation apparatus in a kind of LTE multihop networks is proposed, including：
Data obtaining module, between getting frame configuration information, base station RB occupancy situations, communication terminal and non-occupied terminal
Channel status is believed between channel state information and communication terminal and base station between channel state information, non-occupied terminal and base station
Breath；
Information matches module, for being believed according to channel status between non-occupied terminal and communication terminal, non-occupied terminal and base station
It ceases and is matched with the performance indicator of setting, and using matched at least one non-occupied terminal as link terminal；
Grouping module, for whole to communication terminal and relaying according to geographical location information residing for communication terminal and link terminal
End is grouped, and is divided into same group by communication terminal and for the selected link terminal of the communication terminal；
Resource distribution module, it is idle for the link distribution in terminal and base station subframe between link terminal and base station
Resource；
The idle money in link distribution resource pool in terminal and terminal subframe between communication terminal and link terminal
Source, wherein base station is in the burst using the resource of setting ratio as resource pool；
Path selection module, for knowing the chain for forwarding data using link terminal according to acquired channel state information
Road rate, and judge whether the link rate is more than the link rate of communication terminal and base station direct communication, if it is, in
Forward the data between communication terminal and base station after terminal, otherwise, communication terminal directly with base station transmission data.
Further, information matches module is for selecting multiple non-occupied terminals as link terminal；
Path selection module be used for according between multiple link terminals and base station channel state information and multiple relayings
Channel state information between terminal and communication terminal knows the link speed as relay forwarding data using multiple non-occupied terminals
Rate, and judge whether the rate is more than the link rate of communication terminal and base station direct communication, if it is, being turned by link terminal
Send out data between communication terminal and base station, otherwise, communication terminal directly with base station transmission data.
Further, data obtaining module is used to receive the relaying signaling of non-occupied terminal transmission, by demodulating the relaying signaling
Obtain the channel state information between communication terminal and non-occupied terminal；
Wherein, non-occupied terminal receives the signaling of communication terminal broadcast, and communication terminal and free time are obtained by demodulating the signaling
Channel state information between terminal, and send data obtaining module to by relaying signaling.
According to an aspect of the present invention, the resource allocation system in a kind of LTE multihop networks is proposed, including any of the above-described described
Resource allocation apparatus in LTE multihop networks and at least one link terminal, wherein link terminal to resource allocation for setting
Channel state information between standby transmission communication terminal and link terminal between channel state information, link terminal and base station；With
And if link rate when by link terminal forwarding data is more than the link of communication terminal and resource allocation apparatus direct communication
Rate is then forwarded the data between communication terminal and base station by link terminal.
Further, further include communication terminal, be used for link terminal broadcast signaling；
Wherein, link terminal obtains channel state information between communication terminal and link terminal by demodulating the signaling,
And send resource allocation apparatus to by relaying signaling.
The single-link of traditional communication terminal to base station is become communication terminal to relaying by the introducing of multi-hop network technology
The multilink of terminal, link terminal to base station, it is more complicated that the increase of link causes interference with environment, thus existing resource allocation
Method is not suitable for LTE multihop networks.
In the present invention, spatially it is grouped for communication terminal and link terminal by base station, and on time domain, frequency domain
Link distributes resource between link and link terminal and base station between communication terminal and link terminal, also, selects to use
Road with larger link rate in both link rates of the link rate of link terminal, communication terminal and base station direct communication
Diameter carries out data transmission.Therefore, solve the resource allocation problem in LTE multihop networks, efficiently use system time domain, frequency domain and
Spatial domain resource reduces interference in system, system performance is improved under the premise of not increasing lower deployment cost.
By referring to the drawings to the detailed description of exemplary embodiment of the present invention, other feature of the invention and its
Advantage will become apparent.
Description of the drawings
The attached drawing of a part for constitution instruction describes the embodiment of the present invention, and is used to solve together with the description
Release the principle of the present invention.
The present invention can be more clearly understood according to following detailed description with reference to attached drawing, wherein：
Fig. 1 is the schematic diagram of the embodiment of the resource allocation methods in a kind of LTE multihop networks of the present invention.
Figure 1A is grouping schematic diagram.
Figure 1B is time domain, frequency domain resource distribution schematic diagram.
Fig. 2 is the schematic diagram of the embodiment of the resource allocation apparatus in a kind of LTE multihop networks of the present invention.
Fig. 3 is the schematic diagram of the embodiment of the resource allocation system in a kind of LTE multihop networks of the present invention.
Fig. 4 is the schematic diagram of another embodiment of the resource allocation system in a kind of LTE multihop networks of the present invention.
Specific implementation mode
Carry out the various exemplary embodiments of detailed description of the present invention now with reference to attached drawing.It should be noted that：Unless in addition having
Body illustrates that the unlimited system of component and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally
The range of invention.
Simultaneously, it should be appreciated that for ease of description, the size of attached various pieces shown in the drawings is not according to reality
Proportionate relationship draw.
It is illustrative to the description only actually of at least one exemplary embodiment below, is never used as to the present invention
And its application or any restrictions that use.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as authorizing part of specification.
In shown here and discussion all examples, any occurrence should be construed as merely illustrative, without
It is as limitation.Therefore, the other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it need not be further discussed in subsequent attached drawing in a attached drawing.
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference
Attached drawing, the present invention is described in more detail.
Fig. 1 is the schematic diagram of the embodiment of the resource allocation methods in a kind of LTE multihop networks of the present invention.This method includes
Following steps：
Believe between step 110, base station getting frame configuration information, base station RB occupancy situations, communication terminal and non-occupied terminal
Channel status is believed between channel state information and communication terminal and base station between channel state information, non-occupied terminal and base station
Breath.Base station can also obtain optional auxiliary information, such as communication terminal type of service, the movement speed of user.
In step 120, according to channel state information between non-occupied terminal and communication terminal, non-occupied terminal and base station and setting
Performance indicator matched, and using matched at least one non-occupied terminal as link terminal.Performance indicator mentioned here
E.g. signal strength is most strong or achievable rate maximum etc..Certainly, it will be understood by those skilled in the art that only using here
In for example, should not be construed as limiting the invention.It is mentioned here to match, for example, performance indicator is achievable rate
Maximum then knows rate according to channel state information, and using the maximum non-occupied terminal of rate as link terminal.In another example property
Energy index is that signal strength is most strong, then confirms maximum value according to the signal strength in channel state information, and the signal is strong
The corresponding non-occupied terminal of maximum value is spent as link terminal.
In step 130, according to geographical location information residing for communication terminal and link terminal to communication terminal and link terminal
It is grouped, and same group is divided by communication terminal and for the selected link terminal of the communication terminal.
Figure 1A is grouping schematic diagram.Wherein, grouping is so that multiplexing time-frequency resource between each group.For example, will be apart from relatively close
Communication terminal and link terminal be divided into same group, alternatively, by identical building communication terminal and link terminal draw
It is divided into same group.It thus can be from the interference spatially reduced between each group.
In step 140, the link point in terminal and base station subframe (normal LTE subframes) between link terminal and base station
With idling-resource (RB).
Link in terminal and base station subframe between link terminal and base station distributes idling-resource, that is, in downlink side
To link terminal receives the data that base station is sent by the idling-resource of distribution, and in up direction, link terminal passes through distribution
Idling-resource is to base station transmission data.In the burst, communication terminal and link terminal are ensured orthogonal by the different RB of distribution.
The factors such as the RB number distributed and the link-quality, service rate demand are related, such as proportional fair algorithm (PF may be used
Algorithm) it is that the link distributes RB.
In step 150, the link in terminal and terminal subframe between communication terminal and link terminal distributes resource pool
In idling-resource.Wherein, base station is using the resource of setting ratio as resource pool, that is, divides a part for traditional resource into money
Source pond, to which the resource pool and the traditional resource not being included in resource pool are carried out frequency division multiplexing.For example, system can use RB numbers
Be 100, setting ratio 50%, then can will wherein 50 RB as resource pool.Certainly, which is that can adjust
's.
The idle money in link distribution resource pool in terminal and terminal subframe between communication terminal and link terminal
Source, that is, in down direction, communication terminal receives data by the idling-resource of distribution from link terminal, in up direction, communication
Terminal is by the idling-resource of distribution to link terminal transmission data.
Figure 1B is time domain, frequency domain resource distribution schematic diagram.
When distributing free time RB, such as it is that the link distributes RB that PF algorithms, which may be used,.Ensure each communication in group
Terminal uses different RB, and identical resource pool is shared between each group, to improve resource utilization ratio.
Frequency except resource pool, base station can still distribute to conventional terminal for communicating.Can use be flexibly in this way
System resource.
The occupied frequency of resource pool in terminal and base station subframe and the ratio of terminal and terminal subframe, terminal and terminal subframe
Bandwidth can be adjusted by base station, for example, by base station according to system load, use the information such as multi-hop scheme number of users spirit
Configuration living.
In step 160, the link rate that data are forwarded using link terminal is known according to acquired channel state information,
And judge whether the link rate (multi-hop link rate) is more than the link rate (traditional chain of communication terminal and base station direct communication
Road rate), if so, thening follow the steps 170, otherwise, execute step 180.
Wherein, channel state information includes useful signal and interference signal etc., is calculated according to useful signal and interference signal
Signal-to-noise ratio knows handling capacity according to the correspondence of signal-to-noise ratio and handling capacity, knows link rate according to the handling capacity.Certainly,
Here it is only intended to illustrate the process for knowing link rate according to channel state information.It should not be construed as the limit to the present invention
System.
Using acquired channel state information, the different trunking plans used according to link terminal can be known in use
The link rate of data is forwarded after terminal, for example, taking link rate between communication terminal and link terminal, link terminal and base station
Between link rate, the two medium-rate smaller be taken as link terminal forwarding data link rate.In another example by relaying
Link rate is taken as link terminal forwarding number between link rate or communication terminal and link terminal between terminal and base station
According to link rate.It will be understood by those skilled in the art that being only intended to illustrate here, should not be construed as to the present invention's
Limitation.
In step 170, the data between communication terminal and base station are forwarded by link terminal.
In step 180, communication terminal directly with base station transmission data.
Wherein, it if forwarding the data between communication terminal and base station by link terminal, that is, selects to use multi-hop scheme, then base
It stands and transmission is completed using multi-hop scheme by signaling communication terminal and selected link terminal, other are non-selected idle whole
Continue to keep idle state in end；
If communication terminal directly with base station transmission data, that is, selects traditional scheme, then base station is by signaling communication eventually
Transmission is completed in end using traditional scheme, and all non-occupied terminals keep idle state.
In this embodiment, it is that communication terminal and link terminal are spatially grouped, and (are divided in time domain by base station
Cai Yong terminal and base station subframe and terminal and terminal subframe), frequency domain (link circuit resource and biography between communication terminal and link terminal
Unite resource, that is, shown in Figure 1B) between communication terminal and link terminal link between link and link terminal and base station
Distribution resource, that is, free time RB is distributed for link terminal in terminal and base station subframe, it is whole to communicate with terminal subframe in terminal
End distribution free time RB, also, select link rate (multi-hop scheme), communication terminal and the base station direct communication of link terminal forwarding
Link rate (traditional scheme) the two in carry out data transmission with the path of larger link rate.Therefore, it is more to solve LTE
The resource allocation problem in network is jumped, system time domain, frequency domain and spatial domain resource are efficiently used, interference in system is reduced, is not increasing
System performance is improved under the premise of adding lower deployment cost.
In addition, in the embodiment, Resource Allocation Formula implementation complexity is relatively low.
In an alternative embodiment of the invention, if selecting multiple non-occupied terminals as link terminal, according to multiple relayings
The channel state information between channel state information and multiple link terminals and communication terminal between terminal and base station is known
Link rate using multiple non-occupied terminals as relay forwarding data, and judge whether the rate is more than communication terminal and base station
The link rate of direct communication, if it is, between communication terminal and base station otherwise transmission data communicates by link terminal
Terminal directly with base station transmission data.Wherein, using acquired channel state information, in the difference used according to link terminal
The link rate that data are forwarded using link terminal can be known after scheme.
In this embodiment, it by will have the multi-hop scheme of multiple link terminals to be compared with traditional scheme, and selects
The high path of link rate is selected to carry out data transmission.Therefore, the resource allocation problem in LTE multihop networks is solved, effectively profit
With system time domain, frequency domain and spatial domain resource, interference in system is reduced, systematicness is improved under the premise of not increasing lower deployment cost
Can, and Resource Allocation Formula implementation complexity is low.
In an alternative embodiment of the invention, base station receives the relaying signaling that non-occupied terminal is sent, by demodulating relaying letter
Enable the channel state information obtained between communication terminal and non-occupied terminal；
Wherein, non-occupied terminal receives the signaling of communication terminal broadcast, the signaling include the ID of communication user, transmission power,
The information such as reference signal, non-occupied terminal are believed by demodulating the channel status between signaling acquisition communication terminal and non-occupied terminal
Breath, and send base station to by relaying signaling.
Fig. 2 is the schematic diagram of the embodiment of the resource allocation apparatus in a kind of LTE multihop networks of the present invention.The equipment packet
It includes：Data obtaining module 210, information matches module 220, grouping module 230, resource distribution module 240 and Path selection mould
Block 250.
Data obtaining module 210 is used for getting frame configuration information, base station RB occupancy situations, communication terminal and non-occupied terminal
Between channel state information between channel state information, non-occupied terminal and base station and channel between communication terminal and base station
Status information.
Information matches module 220, for according to channel status between non-occupied terminal and communication terminal, non-occupied terminal and base station
Information is matched with the performance indicator of setting, and using matched at least one non-occupied terminal as link terminal.
Performance indicator mentioned here is, for example, that signal strength is most strong or achievable rate maximum etc..Certainly, art technology
Personnel, which are to be understood that, to be only intended to here for example, should not be construed as limiting the invention.Phase mentioned here
Match, for example, performance indicator is achievable rate maximum, then rate is known according to channel state information, and by the rate maximum free time
Terminal is as link terminal.In another example performance indicator is that signal strength is most strong, then according to the signal strength in channel state information
Confirm maximum value, and using the corresponding non-occupied terminal of signal strength maximum value as link terminal.
Grouping module 230 is used for according to geographical location information residing for communication terminal and link terminal to communication terminal in
It is grouped after terminal, and same group is divided by communication terminal and for the selected link terminal of the communication terminal.
Wherein, grouping is so that multiplexing time-frequency resource between each group.For example, eventually by the closer communication terminal of distance and relaying
End be divided into same group, alternatively, by identical building communication terminal and link terminal be divided into same group.It thus can be with
From the interference spatially reduced between each group.
Resource distribution module 240, for the link distribution in terminal and base station subframe between link terminal and base station
Idling-resource (RB)；For in the link distribution resource pool in terminal and terminal subframe between communication terminal and link terminal
Idling-resource, wherein base station is using the resource of setting ratio as resource pool, that is, divides a part for traditional resource into resource
Pond, to which the resource pool and the traditional resource not being included in resource pool are carried out frequency division multiplexing.
Link in terminal and base station subframe between link terminal and base station distributes idling-resource, that is, in downlink side
To link terminal receives the data that base station is sent by the idling-resource of distribution, and in up direction, link terminal passes through distribution
Idling-resource is to base station transmission data.In terminal and base station subframe, communication terminal and link terminal are by distributing different RB
Ensure orthogonal.The factors such as the RB number distributed and the link-quality, service rate demand are related, such as ratio public affairs may be used
Flat algorithm (PF algorithms) is that the link distributes RB.
The idle money in link distribution resource pool in terminal and terminal subframe between communication terminal and link terminal
Source, that is, in down direction, communication terminal receives data by the idling-resource of distribution from link terminal, in up direction, communication
Terminal is by the idling-resource of distribution to link terminal transmission data.
In terminal and base station subframe, free time RB is selected from resource pool, wherein resource distribution module 240 will be set
The resource of ratio is as resource pool.For example, it is 100 that system, which can use RB numbers, setting ratio 50% then can will wherein 50
RB is as resource pool.Certainly, which is adjustable.
When distributing free time RB, such as it is that the link distributes RB that PF algorithms, which may be used,.Ensure each communication in group
Terminal and link terminal use different RB, and identical resource pool is shared between each group, to improve system resource utilization
Rate.
Frequency except resource pool can still distribute to conventional terminal for communicating.It can flexibly be provided in this way using system
Source.
The occupied frequency of resource pool in terminal and base station subframe and the ratio of terminal and terminal subframe, terminal and terminal subframe
Bandwidth can be adjusted by resource distribution module 240, for example, according to system load, using multi-hop scheme number of users etc.
Information flexible configuration.
Path selection module 250 forwards data for knowing according to acquired channel state information using link terminal
Link rate, and judge the link rate whether be more than communication terminal and base station direct communication link rate, if it is,
Data between communication terminal and base station are forwarded by link terminal, otherwise, communication terminal directly with base station transmission data.
Wherein, channel state information includes useful signal and interference signal etc., is calculated according to useful signal and interference signal
Signal-to-noise ratio knows handling capacity according to the correspondence of signal-to-noise ratio and handling capacity, knows link rate according to the handling capacity.Certainly,
Here it is only intended to illustrate the process for knowing link rate according to channel state information.It should not be construed as the limit to the present invention
System.
Using acquired channel state information, the different trunking plans used according to link terminal can be known in use
The link rate of data is forwarded after terminal, for example, taking link rate between communication terminal and link terminal, link terminal and base station
Between link rate, the two medium-rate smaller be taken as link terminal forwarding data link rate.In another example by relaying
Link rate is taken as link terminal forwarding number between link rate or communication terminal and link terminal between terminal and base station
According to link rate.It will be understood by those skilled in the art that being only intended to illustrate here, should not be construed as to the present invention's
Limitation.
Wherein, it if forwarding the data between communication terminal and base station by link terminal, that is, selects to use multi-hop scheme, then base
It stands and transmission is completed using multi-hop scheme by signaling communication terminal and selected link terminal, other are non-selected idle whole
Continue to keep idle state in end；If communication terminal directly with base station transmission data, that is, selects traditional scheme, then base station passes through signaling
Communication terminal is notified to complete transmission using traditional scheme, all non-occupied terminals keep idle state.
In this embodiment, it is spatially grouped for communication terminal and link terminal by base station, and in time domain, frequency
Link distributes resource between link and link terminal and base station between communication terminal and link terminal on domain, also, selects
There is larger link rate in both link rates using the link rate of relay forwarding, communication terminal and base station direct communication
Path carry out data transmission.Therefore, it solves the resource allocation problem in LTE multihop networks, efficiently uses system time domain, frequency
Domain and spatial domain resource reduce interference in system, system performance are improved under the premise of not increasing lower deployment cost.
In addition, in the embodiment, Resource Allocation Formula implementation complexity is relatively low.
In an alternative embodiment of the invention, information matches module is for selecting multiple non-occupied terminals as link terminal.
Path selection module be used for according between multiple link terminals and base station channel state information and multiple relayings
Channel state information between terminal and communication terminal knows the link speed as relay forwarding data using multiple non-occupied terminals
Rate, and judge whether the rate is more than the link rate of communication terminal and base station direct communication, if it is, being turned by link terminal
Send out data between communication terminal and base station, otherwise, communication terminal directly with base station transmission data.Wherein, acquired letter is utilized
Channel state information, the different trunking plans used according to link terminal can know the link speed that data are forwarded using link terminal
Rate.
In this embodiment, it by will have the multi-hop scheme of multiple link terminals to be compared with traditional scheme, and selects
The high path of link rate is selected to carry out data transmission.Therefore, the resource allocation problem in LTE multihop networks is solved, effectively profit
With system time domain, frequency domain and spatial domain resource, interference in system is reduced, systematicness is improved under the premise of not increasing lower deployment cost
Can, and Resource Allocation Formula implementation complexity is low.
In an alternative embodiment of the invention, data obtaining module is used to receive the relaying signaling of non-occupied terminal transmission, passes through
Demodulate the channel state information between relaying signaling acquisition communication terminal and non-occupied terminal.Wherein, non-occupied terminal receives communication
The signaling of terminal broadcast by demodulating the channel state information between signaling acquisition communication terminal and non-occupied terminal, and passes through
Relaying signaling sends data obtaining module to.
Fig. 3 is the schematic diagram of the embodiment of the resource allocation system in a kind of LTE multihop networks of the present invention.The system includes
Resource allocation apparatus 310 in any of the above-described LTE multihop networks and at least one link terminal 320, wherein relaying is eventually
End 320 to resource allocation apparatus for transmitting channel state information, link terminal and base station between communication terminal and link terminal
Between channel state information；And if link rate when data is forwarded to be more than communication terminal and resource point by link terminal
Link rate with equipment direct communication is then forwarded the data between communication terminal and base station by link terminal.
In this embodiment, it is spatially grouped for communication terminal and link terminal by base station, and in time domain, frequency
Link distributes resource between link and link terminal and base station between communication terminal and link terminal on domain, also, selects
There is larger link rate in both link rates using the link rate of relay forwarding, communication terminal and base station direct communication
Path carry out data transmission.Therefore, it solves the resource allocation problem in LTE multihop networks, efficiently uses system time domain, frequency
Domain and spatial domain resource reduce interference in system, system performance are improved under the premise of not increasing lower deployment cost.
In addition, in the embodiment, Resource Allocation Formula implementation complexity is relatively low.
Fig. 4 is the schematic diagram of another embodiment of the resource allocation system in a kind of LTE multihop networks of the present invention.It is described
Resource allocation system in LTE multihop networks further includes communication terminal 410, is used for link terminal broadcast signaling.
Wherein, link terminal obtains channel state information between communication terminal and link terminal by demodulating the signaling,
And send resource allocation apparatus to by relaying signaling.
So far, the present invention is described in detail.In order to avoid the design of the masking present invention, it is public that this field institute is not described
Some details known.Those skilled in the art as described above, can be appreciated how to implement technology disclosed herein completely
Scheme.
The method and device of the present invention may be achieved in many ways.For example, can by software, hardware, firmware or
Person's software, hardware, firmware any combinations come realize the present invention method and device.The step of for the method it is above-mentioned
Sequence is merely to illustrate, and the step of method of the invention is not limited to sequence described in detail above, unless with other sides
Formula illustrates.In addition, in some embodiments, the present invention can be also embodied as recording program in the recording medium, these
Program includes for realizing machine readable instructions according to the method for the present invention.Thus, the present invention also covers storage for executing
The recording medium of program according to the method for the present invention.
Although some specific embodiments of the present invention are described in detail by example, the skill of this field
Art personnel it should be understood that above example merely to illustrating, the range being not intended to be limiting of the invention.The skill of this field
Art personnel are it should be understood that can without departing from the scope and spirit of the present invention modify to above example.This hair
Bright range is defined by the following claims.
Claims (8)
1. the resource allocation methods in a kind of LTE multihop networks, which is characterized in that including：
Channel status between base station getting frame configuration information, base station resource block (RB) occupancy situation, communication terminal and non-occupied terminal
Channel state information between information, non-occupied terminal and base station between channel state information and communication terminal and base station；
It is carried out according to channel state information between non-occupied terminal and communication terminal, non-occupied terminal and base station and the performance indicator of setting
Matching, and using matched at least one non-occupied terminal as link terminal；
Communication terminal and link terminal are grouped according to geographical location information residing for communication terminal and link terminal, and will
Communication terminal and same group is divided into for the selected link terminal of the communication terminal；
Link in terminal and base station subframe between link terminal and base station distributes idling-resource；
The idling-resource in link distribution resource pool in terminal and terminal subframe between communication terminal and link terminal,
In, base station is in the burst using the resource of setting ratio as resource pool；
The link rate for forwarding data using link terminal is known according to acquired channel state information, and judges link speed
Rate whether be more than communication terminal and base station direct communication link rate, if it is, by link terminal forward communication terminal and
Data between base station, otherwise, communication terminal directly with base station transmission data.
2. the resource allocation methods in LTE multihop networks according to claim 1, which is characterized in that including：
If selecting multiple non-occupied terminals as link terminal, believed according to the channel status between multiple link terminals and base station
Breath and the channel state information between multiple link terminals and communication terminal, which are known, to be turned using multiple non-occupied terminals as relaying
The link rate of data is sent out, and judges whether the rate is more than the link rate of communication terminal and base station direct communication, if so,
Data between communication terminal and base station are then forwarded by link terminal, otherwise, communication terminal directly with base station transmission data.
3. the resource allocation methods in LTE multihop networks according to claim 1, which is characterized in that including：
Base station receives the relaying signaling that non-occupied terminal is sent, by demodulate the relaying signaling obtain communication terminal and non-occupied terminal it
Between channel state information；
Wherein, non-occupied terminal receives the signaling of communication terminal broadcast, and communication terminal and non-occupied terminal are obtained by demodulating the signaling
Between channel state information, and by relay signaling send base station to.
4. the resource allocation apparatus in a kind of LTE multihop networks, which is characterized in that including：
Data obtaining module, for channel between getting frame configuration information, base station RB occupancy situations, communication terminal and non-occupied terminal
Channel state information between channel state information and communication terminal and base station between status information, non-occupied terminal and base station；
Information matches module, for according to channel state information between non-occupied terminal and communication terminal, non-occupied terminal and base station with
The performance indicator of setting is matched, and using matched at least one non-occupied terminal as link terminal；
Grouping module, for according to geographical location information residing for communication terminal and link terminal to communication terminal and link terminal into
Row grouping, and it is divided into same group by communication terminal and for the selected link terminal of the communication terminal；
Resource distribution module, for the idle money of link distribution in terminal and base station subframe between link terminal and base station
Source；The idling-resource in link distribution resource pool in terminal and terminal subframe between communication terminal and link terminal,
In, base station is in the burst using the resource of setting ratio as resource pool, wherein base station is in the burst by the money of setting ratio
Source is as resource pool；
Path selection module, for knowing the link speed for forwarding data using link terminal according to acquired channel state information
Rate, and judge whether the link rate is more than the link rate of communication terminal and base station direct communication, if it is, eventually by relaying
End forwarding communication terminal and base station between data, otherwise, communication terminal directly with base station transmission data.
5. the resource allocation apparatus in LTE multihop networks according to claim 4, which is characterized in that including：
Information matches module is for selecting multiple non-occupied terminals as link terminal；
Path selection module be used for according between multiple link terminals and base station channel state information and multiple link terminals
Channel state information between communication terminal knows the link rate as relay forwarding data using multiple non-occupied terminals, and
Judge whether the rate is more than the link rate of communication terminal and base station direct communication, if it is, being forwarded by link terminal logical
Believe data between terminal and base station, otherwise, communication terminal directly with base station transmission data.
6. the resource allocation apparatus in LTE multihop networks according to claim 4, which is characterized in that including：
Data obtaining module is used to receive the relaying signaling of non-occupied terminal transmission, and communication terminal is obtained by demodulating the relaying signaling
Channel state information between non-occupied terminal；
Wherein, non-occupied terminal receives the signaling of communication terminal broadcast, and communication terminal and non-occupied terminal are obtained by demodulating the signaling
Between channel state information, and by relay signaling send data obtaining module to.
7. the resource allocation system in a kind of LTE multihop networks, which is characterized in that including any LTE of claim 4 to 6
Resource allocation apparatus in multihop network and at least one link terminal, wherein link terminal is used for resource allocation apparatus
Transmit the channel state information between channel state information, link terminal and base station between communication terminal and link terminal；And
If forwarding link rate when data to be more than the link rate of communication terminal and base station direct communication by link terminal, in
The data between communication terminal and base station are forwarded after terminal.
8. the resource allocation system in LTE multihop networks according to claim 7, which is characterized in that further include communication terminal,
For to link terminal broadcast signaling；
Wherein, link terminal is by demodulating the channel state information between signaling acquisition communication terminal and link terminal, and leads to
It crosses relaying signaling and sends resource allocation apparatus to.
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| EP3735100A4 (en) | 2018-01-09 | 2021-01-27 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Data transmission method and apparatus, and computer storage medium |
| CN110769506B (en) * | 2018-07-27 | 2022-06-03 | 成都鼎桥通信技术有限公司 | Resource allocation method of multi-hop in-band relay system |
| CN110786029A (en) * | 2018-11-30 | 2020-02-11 | 深圳市大疆创新科技有限公司 | Communication method, device, mobile platform and control terminal |
| CN111836329B (en) * | 2019-04-19 | 2022-04-22 | Oppo广东移动通信有限公司 | Data transmission method and related device |
| US20240057204A1 (en) * | 2020-12-22 | 2024-02-15 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and Apparatus for Data Relay |
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