CN117376926A - Spectrum resource sharing method, device, equipment and medium - Google Patents

Spectrum resource sharing method, device, equipment and medium Download PDF

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Publication number
CN117376926A
CN117376926A CN202311246860.9A CN202311246860A CN117376926A CN 117376926 A CN117376926 A CN 117376926A CN 202311246860 A CN202311246860 A CN 202311246860A CN 117376926 A CN117376926 A CN 117376926A
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China
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terminal
rate
terminals
target
group
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Inventor
周阅天
南方
丁雪
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China Telecom Technology Innovation Center
China Telecom Corp Ltd
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China Telecom Technology Innovation Center
China Telecom Corp Ltd
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Priority to CN202311246860.9A priority Critical patent/CN117376926A/en
Publication of CN117376926A publication Critical patent/CN117376926A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14—Spectrum sharing arrangements between different networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18—Negotiating wireless communication parameters
    • H04W28/22—Negotiating communication rate
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0473—Wireless resource allocation based on the type of the allocated resource the resource being transmission power
    • 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
    • H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The disclosure provides a spectrum resource sharing method, device, equipment and medium, and relates to the technical field of wireless communication. The method comprises the following steps: the base station acquires channel state information of P first terminals and channel state information of Q second terminals, wherein the first terminals are cellular user terminals, and the second terminals are D2D user terminals; calculating the target power of the first terminal and the target power of the second terminal in each of the M terminal groups according to the channel state information of the P first terminals and the channel state information of the Q second terminals; after the first terminal and the second terminal are paired, the rate of the first terminal is increased compared with the rate of the original first terminal; determining a target terminal group in M terminal groups according to the increasing rate of the first terminal in each terminal group; and based on the information of the target terminal group, issuing an allocation instruction to a second terminal in the target terminal group so that the second terminal in the target terminal group accesses the spectrum resource used by the first terminal in the target terminal group.

Description

Spectrum resource sharing method, device, equipment and medium
Technical Field
The disclosure relates to the technical field of wireless communication, and in particular relates to a spectrum resource sharing method, device, equipment and medium.
Background
D2D (Device-to-Device) communication is an effective technique for offloading user traffic and improving spectrum efficiency, and Full Duplex (FD) communication can improve spectrum efficiency by two times, so that the full duplex D2D technology combined with the two can further improve cell capacity.
D2D users typically share the same frequency with cellular users to increase the cell spectrum efficiency, which may cause co-channel interference between D2D users and cellular users, which may be exacerbated if full duplex D2D is introduced, and may introduce self-interference.
It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art.
Disclosure of Invention
The disclosure provides a spectrum resource sharing method, a device, equipment and a medium, which at least reduce the same-frequency interference between a D2D user and a cellular user and the self-interference of the user to a certain extent.
Other features and advantages of the present disclosure will be apparent from the following detailed description, or may be learned in part by the practice of the disclosure.
According to one aspect of the present disclosure, there is provided a spectrum resource sharing method, applied to a base station, the method including:
acquiring channel state information of P first terminals and channel state information of Q second terminals, wherein the first terminals are cellular user terminals, and the second terminals are D2D user terminals;
calculating the target power of the first terminal and the target power of the second terminal in each of the M terminal groups according to the channel state information of the P first terminals and the channel state information of the Q second terminals; each terminal group comprises a first terminal and a second terminal; the target power of the first terminal and the target power of the second terminal are the power of the first terminal and the power of the second terminal when the sum rate of the first terminal and the second terminal is maximum;
for each terminal group, calculating the rate of increase of the rate of the first terminal compared with the rate of the original first terminal after the first terminal and the second terminal are paired according to the target power of the first terminal and the target power of the second terminal in each terminal group;
determining a target terminal group in M terminal groups according to the increasing rate of the first terminal in each terminal group;
and based on the information of the target terminal group, issuing an allocation instruction to a second terminal in the target terminal group so that the second terminal in the target terminal group accesses the spectrum resource used by the first terminal in the target terminal group.
In one embodiment of the present disclosure, calculating a target power of a first terminal and a target power of a second terminal in each of M terminal groups according to channel state information of P first terminals and channel state information of Q second terminals includes:
and calculating the target power of the first terminal and the target power of the second terminal in each terminal group in the M terminal groups by using a linear programming power control algorithm according to the channel state information of the P first terminals and the channel state information of the Q second terminals so as to maximize the sum rate of the first terminals and the second terminals.
In one embodiment of the present disclosure, channel state information of a first terminal includes uplink channel information of the first terminal and downlink channel information of the first terminal; the channel state information of the second terminal includes uplink channel information of the second terminal and downlink channel information of the second terminal.
In one embodiment of the present disclosure, the rate of the first terminal is increased compared to the rate of the original first terminal, including an increased uplink rate of the first terminal compared to the uplink rate of the original first terminal, and an increased downlink rate of the first terminal compared to the downlink rate of the original first terminal.
In one embodiment of the present disclosure, the target terminal group is determined among the M terminal groups according to a rate of increase in the terminal groups after pairing compared to a rate of the original first terminal
Under the condition that the increased rate is less than or equal to 0, the cell is not accessed;
for a plurality of terminal groups with increasing rates greater than 0, determining a target terminal group by applying a hungarian algorithm based on the corresponding increasing rate of each terminal group.
In one embodiment of the present disclosure, before calculating the target power of the first terminal and the target power of the second terminal in each of the M terminal groups, the method further includes:
and freely combining the P first terminals and the Q second terminals to obtain M terminal groups, wherein M is the product of P and Q.
In one embodiment of the present disclosure, the method further comprises:
after the duration of one radio frame, channel state information of P first terminals and channel state information of Q second terminals are acquired again, wherein the first terminals are cellular user terminals, and the second terminals are D2D user terminals;
calculating the target power of the first terminal and the target power of the second terminal in each of the M terminal groups according to the channel state information of the P first terminals and the channel state information of the Q second terminals; each terminal group comprises a first terminal and a second terminal; the target power of the first terminal and the target power of the second terminal are the power of the first terminal and the power of the second terminal when the sum rate of the first terminal and the second terminal is maximum;
For each terminal group, calculating the rate of increase of the rate of the first terminal compared with the rate of the original first terminal after the first terminal and the second terminal are paired according to the target power of the first terminal and the target power of the second terminal in each terminal group;
determining a target terminal group in M terminal groups according to the increasing rate of the first terminal in each terminal group;
and based on the information of the target terminal group, issuing an allocation instruction to a second terminal in the target terminal group so that the second terminal in the target terminal group accesses the spectrum resource used by the first terminal in the target terminal group.
According to another aspect of the present disclosure, there is provided a spectrum resource sharing apparatus, applied to a base station, the apparatus including:
the information acquisition module is used for acquiring channel state information of P first terminals and channel state information of Q second terminals, wherein the first terminals are cellular user terminals, and the second terminals are D2D user terminals;
the power calculation module is used for calculating the target power of the first terminal and the target power of the second terminal in each terminal group in M terminal groups according to the channel state information of the P first terminals and the channel state information of the Q second terminals; each terminal group comprises a first terminal and a second terminal; the target power of the first terminal and the target power of the second terminal are the power of the first terminal and the power of the second terminal when the sum rate of the first terminal and the second terminal is maximum;
The rate calculation module is used for calculating the rate of the first terminal compared with the rate of the original first terminal after the first terminal and the second terminal are paired according to the target power of the first terminal and the target power of the second terminal in each terminal group;
the target group determining module is used for determining a target terminal group in M terminal groups according to the increasing rate of the first terminal in each terminal group;
and the terminal pairing module is used for issuing a pairing instruction to a second terminal in the target terminal group based on the information of the target terminal group so that the second terminal in the target terminal group accesses to the spectrum resource used by the first terminal in the target terminal group.
According to still another aspect of the present disclosure, there is provided an electronic apparatus including: a memory for storing instructions; and the processor is used for calling the instructions stored in the memory to realize the spectrum resource sharing method.
According to yet another aspect of the present disclosure, there is provided a computer-readable storage medium having stored thereon computer instructions which, when executed by a processor, implement the above-described spectrum resource sharing method.
According to yet another aspect of the present disclosure, there is provided a computer program product storing instructions that, when executed by a computer, cause the computer to implement the above-described spectrum resource sharing method.
According to yet another aspect of the present disclosure, there is provided a chip comprising at least one processor and an interface;
an interface for providing program instructions or data to at least one processor;
the at least one processor is configured to execute the program instructions to implement the spectrum resource sharing method described above.
According to the spectrum resource sharing method, the device, the equipment and the medium, the full-duplex D2D user is combined with the cellular user to share the spectrum, the power allocation and the resource allocation between the full-duplex D2D user and the cellular user are decoupled to cooperate with each other, the cell capacity is maximized, and the cell capacity gain is not influenced by the specific weight of uplink and downlink business in the cell.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.
It will be apparent to those of ordinary skill in the art that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived from them without undue effort.
FIG. 1 illustrates a communication scenario diagram in an embodiment of the present disclosure;
FIG. 2 shows a flowchart of a method for spectrum resource sharing in an embodiment of the disclosure;
fig. 3 is a schematic diagram illustrating a process of determining a target power by using a linear programming power control method during uplink spectrum sharing in an embodiment of the disclosure;
fig. 4 is a schematic diagram illustrating a process of determining a target power by using a linear programming power control method during downlink spectrum sharing in an embodiment of the disclosure;
FIG. 5 illustrates another spectrum resource sharing method flow diagram in an embodiment of the present disclosure;
fig. 6 is a schematic diagram of a spectrum resource sharing device in an embodiment of the disclosure;
fig. 7 shows a block diagram of an electronic device in an embodiment of the disclosure.
Detailed Description
Example embodiments will now be described more fully hereinafter with reference to the accompanying drawings.
It should be noted that the exemplary embodiments can be implemented in various forms and should not be construed as limited to the examples set forth herein.
Fig. 1 shows a schematic diagram of a communication scenario, as shown in fig. 1, comprising a base station, a plurality of full duplex D2D user terminals (DUs) and a plurality of cellular user terminals (CUs).
As shown in fig. 1, an uplink CU and a downlink CU exist in a cell, and a DU may select one CU to communicate with its shared spectrum. For example, DU1 selects an uplink user CU1 for spectrum sharing, and interference analysis of the shared uplink spectrum is given in the pairing of CU1-DU1 of fig. 1; whereas DU2 selects a downstream subscriber CU2 for spectrum sharing, interference analysis of the shared downstream spectrum is given in the pairing of CU2-DU2 of fig. 1.
Suppose there are a total of Q DUs, P CUs in the cell. Full duplex D2D is typically a large mobile device with channel measurement capabilities of the base station. In the disclosed embodiment, it is assumed that the common-frequency channel is a perfect reciprocal channel, i.e., the channel shown in fig. 1G at the same frequency B,j ＝g j,B ，g i,j ＝g j,i ，g B,i ＝g i,B Wherein g j,B G, for the uplink channel information of the jth first terminal B,j And the uplink channel information of the j-th first terminal.
The residual self-interference SI is determined by the full duplex D2D device transmit power and the self-interference cancellation capability η, i.e., si=η·p i Wherein p is i For full duplex D2D device transmit power, i e d= {1,2, … Q }, j e c= {1,2, … P }.
Fig. 2 is a flowchart illustrating a spectrum resource sharing method according to an embodiment of the present disclosure, where, as shown in fig. 2, an execution body of the spectrum resource sharing method is a base station, and the spectrum resource sharing method includes steps S202 to S210.
In S202, channel state information of P first terminals and channel state information of Q second terminals are acquired, where the first terminals are cellular user terminals, and the second terminals are full duplex D2D user terminals.
In S204, calculating a target power of the first terminal and a target power of the second terminal in each of the M terminal groups according to the channel state information of the P first terminals and the channel state information of the Q second terminals; each terminal group comprises a first terminal and a second terminal; the target power of the first terminal and the target power of the second terminal are the power of the first terminal and the power of the second terminal when the sum rate of the first terminal and the second terminal is maximum.
In some embodiments, M is the product of P and Q. Before calculating the target power of the first terminal and the target power of the second terminal in each of the M terminal groups, the method may further include freely combining the P first terminals and the Q second terminals to obtain M terminal groups.
In S206, for each terminal group, a rate at which the rate of the first terminal increases compared with the rate of the original first terminal after the first terminal and the second terminal are paired is calculated according to the target power of the first terminal and the target power of the second terminal in each terminal group.
In S208, a target terminal group is determined among the M terminal groups according to the rate at which the first terminal increases in each terminal group.
In S210, based on the information of the target terminal group, an pairing instruction is issued to the second terminal in the target terminal group, so that the second terminal in the target terminal group accesses the spectrum resource used by the first terminal in the target terminal group.
In some embodiments, the allocation of resources is performed once per radio frame (10 ms), i.e. the above-mentioned spectrum resource sharing method is re-performed once.
In one embodiment, after the duration of one radio frame, channel state information of P first terminals and channel state information of Q second terminals are acquired again, where the first terminals are cellular user terminals, and the second terminals are D2D user terminals; calculating the target power of the first terminal and the target power of the second terminal in each of the M terminal groups according to the channel state information of the P first terminals and the channel state information of the Q second terminals; each terminal group comprises a first terminal and a second terminal; the target power of the first terminal and the target power of the second terminal are the power of the first terminal and the power of the second terminal when the sum rate of the first terminal and the second terminal is maximum; for each terminal group, calculating the rate of increase of the rate of the first terminal compared with the rate of the original first terminal after the first terminal and the second terminal are paired according to the target power of the first terminal and the target power of the second terminal in each terminal group; determining a target terminal group in M terminal groups according to the increasing rate of the first terminal in each terminal group; and based on the information of the target terminal group, issuing an allocation instruction to a second terminal in the target terminal group so that the second terminal in the target terminal group accesses the spectrum resource used by the first terminal in the target terminal group.
The embodiment of the disclosure applies full duplex technology to D2D to further improve the cell capacity, and the spectrum resource sharing method provided by the embodiment of the disclosure can be used for reducing the interference between the D2D user and the cellular user and improving the cell capacity. The method can be decoupled into two steps of power allocation and resource allocation between the full duplex D2D user and the cellular user to cooperate with each other so as to maximize the cell capacity. And the embodiment of the disclosure jointly shares the uplink and downlink frequency spectrums of the cellular users, and the capacity gain of the cell is not influenced by the specific weight of uplink and downlink service in the cell.
In some embodiments, the channel state information of the first terminal includes uplink channel information of the first terminal and downlink channel information of the first terminal; the channel state information of the second terminal includes uplink channel information of the second terminal and downlink channel information of the second terminal.
In S202, the base station normally communicates with the first terminal (CU) in the cell, and records the channel state information g of each CU in the background B,j Or g j,B . Transmitting probe signals to measure channel state information of base station to respective second terminals (DUs) within a cell
At the same time, all DU pairs caller (i 1 ) With the called party (i) 2 ) Establishing a link, transmitting detection signals in a full frequency band, and detecting channel state information of the self and surrounding CUs, namelyDetecting channel information g between calling party and called party i,i And reporting to the base station, and waiting for the base station to allocate spectrum resources.
The above i e d= {1,2, … Q }, j e c= {1,2, … P }.
In some embodiments, in S204, calculating the target power of the first terminal and the target power of the second terminal in each of the M terminal groups according to the channel state information of the P first terminals and the channel state information of the Q second terminals includes: and calculating the target power of the first terminal and the target power of the second terminal in each terminal group in the M terminal groups by using a linear programming power control algorithm according to the channel state information of the P first terminals and the channel state information of the Q second terminals so as to maximize the sum rate of the first terminals and the second terminals.
The following description of the scenario in connection with fig. 1 illustrates the above step S204, where the base station has recorded all the channel information in fig. 1, and then the base station side background calculates using optimal power controlIn this way, the optimal power values for the DU and CU for all possible pairings are calculated such that the sum rate of the two users in the DU and CU is maximized. All possible pairings are denoted { (DU) i ,CU j ) I e d= {1,2, … Q }, j e c= {1,2, … P }, each pair (DU i ,CU j ) The corresponding optimal power value is expressed as
The power control algorithm adopts a classical linear programming power control method, as shown in fig. 3 (uplink spectrum sharing) and fig. 4 (downlink spectrum sharing), the feasible region is surrounded by 4 straight lines,
sharing spectrum with an upstream CU:
sharing spectrum with a downstream CU:
wherein,CU uplink QoS requirements, CU downlink QoS requirements, DU QoS requirements, CU maximum transmitting power and base station allocation to CU j The maximum power of the DU, the maximum transmit power, are values given by the system, which are known parameters. P is p j ，p i ，p B,j Representing CU transmitting power and DU transmitting power as variables, and base station is allocated to CU j Is a variable. />The CU uplink SINR, CU downlink SINR, DU uplink SINR, DU downlink SINR, respectively, can be expressed by the following equation.
Uplink sharing:
downlink sharing:
wherein the rest parameters are parameters known to the base station, g j,i ，g B,i Respectively represent CU j Approximate interference to DU users, approximate interference to DU users by the base station. Since D2D is near field communication, the interference of CU and base station received by the calling and called DU is considered as the same for simplifying the calculation. g j,i As a measurement valueAverage value of g B,i For measuring +.>Is a mean value of (c).
The power control algorithm proves that when CU j With DU i When paired, the power value that maximizes the sum rate can only appear in { Y } in FIG. 3 1 ,Y 2 ,Y 3 ,Y 4 ,Y 5 Among the five points, the base station background calculates and searches and compares the optimal power valuei∈D＝{1,2,…Q}，j∈C＝{1,2,…P}。
In some embodiments, the rate of the first terminal is increased compared to the rate of the original first terminal, including an increased uplink rate of the first terminal compared to the uplink rate of the original first terminal, and an increased downlink rate of the first terminal compared to the downlink rate of the original first terminal.
After the first two steps, the base station background obtains the optimal power (PxQ set total) for each CU-DU pair, as well as all channel state information. We can then calculate the CU and DU rates, and growth rates for each pairing.
The calculation formula is as follows, whereinRespectively DU i With CU j CU rate, DU rate (one of the caller and the callee) in the case of uplink spectrum sharing, paired sum rate, rate increased compared to the original CU terminal after pairing.Respectively DU i With CU j CU rate, DU rate (one of the caller and the callee) in the case of downlink spectrum sharing, paired sum rate, rate increased compared to the original CU terminal after pairing.
Uplink sharing:
wherein,for the increased uplink rate of the jth first terminal compared with the original uplink rate of the jth first terminal after pairing with the ith second terminal,/the uplink rate of the jth first terminal is increased>To pair with the ith second terminal, uplink rate of the jth first terminal under the condition of sharing uplink frequency spectrums of the jth first terminal and the ith second terminal, < >>For the uplink rate of the original jth first terminal,/I>Maximum transmission power of j-th first terminal g j，B And the uplink channel information of the j-th first terminal.
Downlink sharing:
wherein,for the pairing with the ith second terminal, the downlink rate of the jth first terminal is increased compared with the original downlink rate of the jth first terminalDownlink rate of>After being paired with the ith second terminal, the downlink rate of the jth first terminal and the jth first terminal under the condition of sharing downlink frequency spectrum of the jth first terminal, < + >>For the downlink rate of the original jth first terminal,/th>Maximum transmit power allocated to the jth first terminal for the base station g B,j And the downlink channel information of the j first terminal.
Through the above steps, no matter DU i The base station calculates the paired DU rate, CU rate, pairing sum rate and pairing increase rate (compared with the original CU rate) when the base station is paired with the CU terminal which is doing uplink or the base station is paired with the CU terminal which is doing downlink.
In some embodiments, determining the target terminal group among the M terminal groups according to a rate of increase in the terminal groups after pairing compared to the rate of the original first terminal includes: under the condition that the increased rate is less than or equal to 0, the cell is not accessed; for a plurality of terminal groups with increasing rates greater than 0, determining a target terminal group by applying a hungarian algorithm based on the corresponding increasing rate of each terminal group.
Each set of DUs as described above i With CU j The growth rate calculated for the pairing performs the following procedure, if the growth rate is equal to or less than 0, indicating that the pairing has no gain, then CU j Continuing to communicate with the base station, DU i Selecting a non-access cell, i.e. (for example, downlink sharing, uplink sharing can be analogous to downlink):
end
initializing a matrix [ delta ] R] QP Each group of pairing is then subjected to ΔR i,j Placed in matrix [ delta R ]] QP In the formula below.
For matrix [ delta R ]] QP And (5) using the maximum weight matching of the Hungary algorithm, and returning the pairing set P and the maximum weight h. Pairing set P indicates DU i The same resource should be shared with which CU pair, the algorithm returns to the set P and sends to all full duplex D2D terminals, DU accesses the resource being used by the CU paired with the set P, and the resource allocation is completed.
The maximum weight h indicates a value for improving the system performance after full duplex D2D access, and the performance gain of the system can be monitored in real time.
The resources of the DU are reallocated once per radio frame, i.e. the above steps are repeated once per radio frame.
Fig. 5 shows a flowchart of a spectrum resource sharing method in an embodiment of the present disclosure, where, as shown in fig. 5, an execution body of the spectrum resource sharing method is a base station, and the spectrum resource sharing method includes steps S501-S507.
In S501, the base station communicates with a CU in a cell normally, and reports CU-related channel state information.
In S502, a link is established between a calling party and a called party of a DU in a cell, and related channel state information of the DU is reported, and a base station waits for allocating frequency resources.
In S503, the optimal power pair for each pair of DU and CU is calculated with the linear programming power control algorithm to maximize the sum rate of the DU and CU based on all reported channel state information.
In S504, CU rates, DU rates, and rates and growth rates for all possible pairings are calculated based on the optimal power and channel information.
In S505, the execution algorithm completes the growth rate matrix and executes the hungarian algorithm to return the optimal pairing set P, and the maximum weight h.
In S506, the pairing set P is issued to all DUs, which share the spectrum used by the set access pairing CU. The background monitors the performance gain h in real time.
In S507, the process returns to S501 for each radio frame (10 ms), and the resource allocation is performed once.
The full duplex D2D can more effectively offload cellular user traffic, and further improve cell spectrum utilization. The embodiment of the disclosure is not influenced by the specific gravity of the uplink and downlink service of the cell, and can greatly improve the cell capacity.
The method of the embodiment of the disclosure is verified by simulation, and 10 uplink terminals and 10 downlink terminals in a cell are set in the simulation; 20 uplink terminals; the 20 downlink terminals have 3 scenes, and the simulation result shows that the method can improve the cell capacity by more than 40% in the 3 scenes.
In the presently disclosed embodiments, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The term "and/or" in this disclosure is merely one association relationship describing the associated object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
Furthermore, although the steps of the methods in the present disclosure are depicted in a particular order in the drawings, this does not require or imply that the steps must be performed in that particular order or that all illustrated steps be performed in order to achieve desirable results.
In some embodiments, certain steps may be omitted, multiple steps combined into one step to perform, and/or one step decomposed into multiple steps to perform, etc.
Based on the same inventive concept, the embodiments of the present disclosure also provide a spectrum resource sharing device, as described in the following embodiments. Since the principle of solving the problem of the embodiment of the device is similar to that of the embodiment of the method, the implementation of the embodiment of the device can be referred to the implementation of the embodiment of the method, and the repetition is omitted.
Fig. 6 shows a spectrum resource sharing apparatus in an embodiment of the present disclosure, which is applied to a base station, and as shown in fig. 6, the spectrum resource sharing apparatus 600 includes:
an information obtaining module 602, configured to obtain channel state information of P first terminals and channel state information of Q second terminals, where the first terminals are cellular user terminals, and the second terminals are D2D user terminals;
a power calculation module 604, configured to calculate, according to the channel state information of the P first terminals and the channel state information of the Q second terminals, a target power of the first terminal and a target power of the second terminal in each of the M terminal groups; each terminal group comprises a first terminal and a second terminal; the target power of the first terminal and the target power of the second terminal are the power of the first terminal and the power of the second terminal when the sum rate of the first terminal and the second terminal is maximum;
A rate calculation module 606, configured to calculate, for each terminal group, a rate at which the rate of the first terminal increases compared to the rate of the original first terminal after pairing the first terminal and the second terminal according to the target power of the first terminal and the target power of the second terminal in each terminal group;
a target group determining module 608, configured to determine a target terminal group among M terminal groups according to the rate at which the first terminal in each terminal group increases;
the terminal pairing module 610 is configured to issue a pairing instruction to a second terminal in the target terminal group based on the information of the target terminal group, so that the second terminal in the target terminal group accesses the spectrum resource used by the first terminal in the target terminal group.
In some embodiments, the power calculating module 604 is configured to calculate, according to the channel state information of the P first terminals and the channel state information of the Q second terminals, a target power of the first terminal and a target power of the second terminal in each of the M terminal groups by using a linear programming power control algorithm, so as to maximize a sum rate of the first terminal and the second terminal.
In some embodiments, the channel state information of the first terminal includes uplink channel information of the first terminal and downlink channel information of the first terminal; the channel state information of the second terminal includes uplink channel information of the second terminal and downlink channel information of the second terminal.
In some embodiments, the rate of the first terminal is increased compared to the rate of the original first terminal, including an increased uplink rate of the first terminal compared to the uplink rate of the original first terminal, and an increased downlink rate of the first terminal compared to the downlink rate of the original first terminal.
In some embodiments, the target group determination module 608 is configured to not access the cell if the rate of increase is equal to or less than 0; for a plurality of terminal groups with increasing rates greater than 0, determining a target terminal group by applying a hungarian algorithm based on the corresponding increasing rate of each terminal group.
In some embodiments, M is the product of P and Q.
The terms "first," "second," and the like in this disclosure are used solely to distinguish one from another device, module, or unit, and are not intended to limit the order or interdependence of functions performed by such devices, modules, or units.
With respect to the spectrum resource sharing apparatus in the above embodiment, the specific manner in which the respective modules perform the operations has been described in detail in the embodiment regarding the spectrum resource sharing method, and will not be described in detail here.
It should be noted that although in the above detailed description several modules or units of a device for action execution are mentioned, such a division is not mandatory.
Indeed, the features and functionality of two or more modules or units described above may be embodied in one module or unit in accordance with embodiments of the present disclosure. Conversely, the features and functions of one module or unit described above may be further divided into a plurality of modules or units to be embodied.
Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in software or in one or more hardware modules or integrated circuits or in different networks and/or processor devices and/or microcontroller devices.
An electronic device provided by an embodiment of the present disclosure is described below with reference to fig. 7. The electronic device 700 shown in fig. 7 is merely an example and should not be construed to limit the functionality and scope of use of embodiments of the present disclosure in any way.
Fig. 7 shows a schematic architecture diagram of an electronic device 700 according to the present disclosure. As shown in fig. 7, the electronic device 700 includes, but is not limited to: at least one processor 710, at least one memory 720.
Memory 720 for storing instructions.
In some embodiments, memory 720 may include readable media in the form of volatile memory units, such as Random Access Memory (RAM) 7201 and/or cache memory 7202, and may further include Read Only Memory (ROM) 7203.
In some embodiments, memory 720 may also include a program/utility 7204 having a set (at least one) of program modules 7205, such program modules 7205 including, but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of which may include an implementation of a network environment.
In some embodiments, memory 720 may store an operating system. The operating system may be a real-time operating system (Real Time eXecutive, RTX), LINUX, UNIX, WINDOWS or OS X like operating systems.
In some embodiments, memory 720 may also have data stored therein.
As one example, processor 710 may read data stored in memory 720, which may be stored at the same memory address as the instructions, or which may be stored at a different memory address than the instructions.
Processor 710 for invoking instructions stored in memory 720 to implement the steps described in the "exemplary methods" section of the present specification according to various exemplary embodiments of the present disclosure. For example, the processor 710 may perform the steps of the method embodiments described above.
It should be noted that, the processor 710 may be a general-purpose processor or a special-purpose processor. Processor 710 may include one or more processing cores, and processor 710 performs various functional applications and data processing by executing instructions.
In some embodiments, processor 710 may include a central processing unit (central processing unit, CPU) and/or a baseband processor.
In some embodiments, processor 710 may determine an instruction based on a priority identification and/or functional class information carried in each control instruction.
In this disclosure, the processor 710 and the memory 720 may be provided separately or may be integrated.
As one example, processor 710 and memory 720 may be integrated on a single board or System On Chip (SOC).
As shown in fig. 7, the electronic device 700 is embodied in the form of a general purpose computing device. Electronic device 700 may also include a bus 730.
Bus 730 may be a local bus representing one or more of several types of bus structures including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processor, or a memory using any of a variety of bus architectures.
The electronic device 700 may also communicate with one or more external devices 740 (e.g., keyboard, pointing device, bluetooth device, etc.), one or more devices that enable a user to interact with the electronic device 700, and/or any device (e.g., router, modem, etc.) that enables the electronic device 700 to communicate with one or more other computing devices. Such communication may occur through an input/output (I/O) interface 750.
Also, electronic device 700 may communicate with one or more networks such as a Local Area Network (LAN), a Wide Area Network (WAN) and/or a public network, such as the Internet, through network adapter 760.
As shown in fig. 7, network adapter 760 communicates with other modules of electronic device 700 over bus 730.
It should be appreciated that although not shown, other hardware and/or software modules may be used in connection with electronic device 700, including, but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, data backup storage systems, and the like.
It is to be understood that the illustrated structure of the presently disclosed embodiments does not constitute a particular limitation of the electronic device 700. In other embodiments of the present disclosure, electronic device 700 may include more or fewer components than shown in FIG. 7, or may combine certain components, or split certain components, or a different arrangement of components. The components shown in fig. 7 may be implemented in hardware, software, or a combination of software and hardware.
The present disclosure also provides a computer-readable storage medium having stored thereon computer instructions that, when executed by a processor, implement the spectrum resource sharing method described in the above method embodiments.
A computer-readable storage medium in an embodiment of the present disclosure is a computer instruction that can be transmitted, propagated, or transmitted for use by or in connection with an instruction execution system, apparatus, or device.
As one example, the computer-readable storage medium is a non-volatile storage medium.
In some embodiments, more specific examples of the computer readable storage medium in the present disclosure may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, a U disk, a removable hard disk, or any suitable combination of the foregoing.
In an embodiment of the present disclosure, a computer-readable storage medium may include a data signal propagated in baseband or as part of a carrier wave, with computer instructions (readable program code) carried therein.
Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing.
In some examples, the computing instructions contained on the computer-readable storage medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
The disclosed embodiments also provide a computer program product storing instructions that, when executed by a computer, cause the computer to implement the spectrum resource sharing method described in the above method embodiments.
The instructions may be program code. In particular implementations, the program code can be written in any combination of one or more programming languages.
The programming languages include object oriented programming languages such as Java, C++, etc., and conventional procedural programming languages such as the "C" language or similar programming languages.
The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device, partly on a remote computing device, or entirely on the remote computing device or server.
In the case of remote computing devices, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., connected via the Internet using an Internet service provider).
The embodiment of the disclosure also provides a chip comprising at least one processor and an interface;
an interface for providing program instructions or data to at least one processor;
the at least one processor is configured to execute the program instructions to implement the spectrum resource sharing method described in the above method embodiment.
In some embodiments, the chip may also include a memory for holding program instructions and data, the memory being located either within the processor or external to the processor.
Those of ordinary skill in the art will appreciate that all or a portion of the steps implementing the above embodiments may be embodied in the form of: an entirely hardware embodiment, an entirely software embodiment (including firmware, micro-code, etc.) or an embodiment combining hardware and software aspects may be referred to herein as a "circuit," module "or" system.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein.
This disclosure is intended to cover any adaptations, uses, or adaptations of the disclosure following the general principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

Claims (11)

1. A method for sharing spectrum resources, applied to a base station, the method comprising:
acquiring channel state information of P first terminals and channel state information of Q second terminals, wherein the first terminals are cellular user terminals, and the second terminals are full duplex D2D user terminals;
calculating the target power of the first terminal and the target power of the second terminal in each of the M terminal groups according to the channel state information of the P first terminals and the channel state information of the Q second terminals; each terminal group comprises a first terminal and a second terminal; the target power of the first terminal and the target power of the second terminal are the power of the first terminal and the power of the second terminal when the sum rate of the first terminal and the second terminal is maximum;
For each terminal group, calculating the rate of increase of the rate of the first terminal compared with the rate of the original first terminal after the first terminal and the second terminal are paired according to the target power of the first terminal and the target power of the second terminal in each terminal group;
determining a target terminal group in the M terminal groups according to the increasing rate of the first terminal in each terminal group;
and based on the information of the target terminal group, issuing an allocation instruction to a second terminal in the target terminal group so that the second terminal in the target terminal group accesses the spectrum resource used by the first terminal in the target terminal group.
2. The method of claim 1, wherein calculating the target power of the first terminal and the target power of the second terminal in each of the M terminal groups based on the channel state information of the P first terminals and the channel state information of the Q second terminals comprises:
and calculating the target power of the first terminal and the target power of the second terminal in each terminal group in M terminal groups by using a linear programming power control algorithm according to the channel state information of the P first terminals and the channel state information of the Q second terminals so as to maximize the sum rate of the first terminal and the second terminal.
3. The method of claim 1, wherein the channel state information of the first terminal includes uplink channel information of the first terminal and downlink channel information of the first terminal; the channel state information of the second terminal includes uplink channel information of the second terminal and downlink channel information of the second terminal.
4. A method according to claim 1 or 3, characterized in that the rate of the first terminal is increased compared to the rate of the original first terminal, including an increased uplink rate of the first terminal compared to the uplink rate of the original first terminal, and an increased downlink rate of the first terminal compared to the downlink rate of the original first terminal.
5. The method of claim 4, wherein the rate of increase of the rate of the first terminal compared to the rate of the original first terminal is calculated by the formula:
wherein,for the increased uplink rate of the jth first terminal compared with the original uplink rate of the jth first terminal after pairing with the ith second terminal,/the uplink rate of the jth first terminal is increased>To pair with the ith second terminal, uplink rate of the jth first terminal under the condition of sharing uplink frequency spectrums of the jth first terminal and the ith second terminal, < > >For the uplink rate of the original jth first terminal,/I>Maximum transmission power of j-th first terminal g j，B The uplink channel information of the j-th first terminal;
wherein,for the increased downlink rate of the jth first terminal compared with the original downlink rate of the jth first terminal after pairing with the ith second terminal,/the downlink rate of the jth first terminal is increased>After being paired with the ith second terminal, the downlink rate of the jth first terminal and the jth first terminal under the condition of sharing downlink frequency spectrum of the jth first terminal, < + >>For the downlink rate of the original jth first terminal,/th>Maximum transmit power allocated to the jth first terminal for the base station g B，j And the downlink channel information of the j first terminal.
6. The method of claim 1, wherein the target terminal group is determined among the M terminal groups based on a rate of increase in the terminal groups after pairing compared to a rate of the original first terminal
If the rate of increase is less than or equal to 0, not accessing the cell;
and determining a target terminal group by applying a Hungary algorithm on the basis of the corresponding increased rate of each terminal group aiming at the terminal groups with the increased rate being greater than 0.
7. The method of claim 1, wherein prior to calculating the target power for the first terminal and the target power for the second terminal in each of the M terminal groups, the method further comprises:
And freely combining the P first terminals and the Q second terminals to obtain M terminal groups, wherein M is the product of P and Q.
8. The method according to any one of claims 1-7, further comprising:
after the duration of one radio frame, channel state information of P first terminals and channel state information of Q second terminals are acquired again, wherein the first terminals are cellular user terminals, and the second terminals are D2D user terminals;
calculating the target power of the first terminal and the target power of the second terminal in each of the M terminal groups according to the channel state information of the P first terminals and the channel state information of the Q second terminals; each terminal group comprises a first terminal and a second terminal; the target power of the first terminal and the target power of the second terminal are the power of the first terminal and the power of the second terminal when the sum rate of the first terminal and the second terminal is maximum;
for each terminal group, calculating the rate of increase of the rate of the first terminal compared with the rate of the original first terminal after the first terminal and the second terminal are paired according to the target power of the first terminal and the target power of the second terminal in each terminal group;
Determining a target terminal group in the M terminal groups according to the increasing rate of the first terminal in each terminal group;
and based on the information of the target terminal group, issuing an allocation instruction to a second terminal in the target terminal group so that the second terminal in the target terminal group accesses the spectrum resource used by the first terminal in the target terminal group.
9. A spectrum resource sharing apparatus, applied to a base station, comprising:
the information acquisition module is used for acquiring channel state information of P first terminals and channel state information of Q second terminals, wherein the first terminals are cellular user terminals, and the second terminals are D2D user terminals;
the power calculation module is used for calculating the target power of the first terminal and the target power of the second terminal in each terminal group in M terminal groups according to the channel state information of the P first terminals and the channel state information of the Q second terminals; each terminal group comprises a first terminal and a second terminal; the target power of the first terminal and the target power of the second terminal are the power of the first terminal and the power of the second terminal when the sum rate of the first terminal and the second terminal is maximum;
The rate calculation module is used for calculating the rate of the first terminal compared with the rate of the original first terminal after the first terminal and the second terminal are paired according to the target power of the first terminal and the target power of the second terminal in each terminal group;
a target group determining module, configured to determine a target terminal group among the M terminal groups according to a rate at which the first terminal in each terminal group increases;
and the terminal pairing module is used for issuing a pairing instruction to a second terminal in the target terminal group based on the information of the target terminal group so as to enable the second terminal in the target terminal group to access the spectrum resource used by the first terminal in the target terminal group.
10. An electronic device, comprising:
a memory for storing instructions;
a processor, configured to invoke the instructions stored in the memory, to implement the spectrum resource sharing method according to any of claims 1-8.
11. A computer readable storage medium having stored thereon computer instructions, which when executed by a processor, implement the spectrum resource sharing method of any of claims 1-8.
CN202311246860.9A 2023-09-25 2023-09-25 Spectrum resource sharing method, device, equipment and medium Pending CN117376926A (en)

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