WO2015085494A1 - Base station and user scheduling method - Google Patents
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- WO2015085494A1 WO2015085494A1 PCT/CN2013/089009 CN2013089009W WO2015085494A1 WO 2015085494 A1 WO2015085494 A1 WO 2015085494A1 CN 2013089009 W CN2013089009 W CN 2013089009W WO 2015085494 A1 WO2015085494 A1 WO 2015085494A1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/121—Wireless traffic scheduling for groups of terminals or users
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/022—Site diversity; Macro-diversity
- H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
- H04B7/0452—Multi-user MIMO systems
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- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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Definitions
- the embodiments of the present invention relate to the field of communications technologies, and in particular, to a base station device and a user scheduling method for a virtual multiple input/output system. Background technique
- MIMO Multiple Input-Output
- V-MIMO virtual MIMO
- the MIMO technology can divide the users who conform to the standard into a group by a specific selection method to form a virtual multi-antenna array that shares the time-frequency resources to transmit data, and can achieve the spatial multiplexing effect of the MIMO system. It can be seen that choosing the appropriate user scheduling method is the key to implementing V-MIMO technology.
- the V-MIMO pairing method selects users to be paired among any users in the cell. Since the paired users use the same time-frequency resource block (RB) to send signals to the base station, the interference to the neighboring area is increased. Excessive interference will reduce the success rate of pairing and reduce the gain brought by user pairing. Summary of the invention
- an embodiment of the invention provides a user scheduling method and a base station of a virtual multiple input and output system, which can improve the success rate of pairing.
- an embodiment of the present invention provides a base station, and a base station, including: a control base station, where the control base station communicates with other parts of the base station by using a communication bus;
- the control base station includes: a memory, a processor, a communication link;
- the memory is configured to store an instruction
- the processor is in communication with the memory through the communication link; after the instructions stored in the memory are executed by the processor, the control base station enables the base station to implement a virtual multiple input A user scheduling method of the output system, the method comprising:
- the first user is configured with a first collaboration set;
- the first collaboration set includes a serving cell and a collaboration cell of the first user;
- the base station selects a second user that does not perform data transmission scheduling, and the second user is configured with a second cooperation set; the second cooperation set includes a serving cell and a coordinated cell of the second user;
- the first user and the second user are paired using the first collaboration set and the second collaboration set.
- the control base station causes the coordinated cell of the first user to include the first user. a first type of coordinated cell and a second type of coordinated cell; or the coordinated cell of the first user is a second type of coordinated cell;
- the first type of coordinated cell includes a neighboring cell of the serving cell of the first user, The difference between the reference signal received power RSRP of the neighboring cell of the serving cell of the first user and the RSRP of the first user in the serving cell is within a preset threshold;
- the second type of coordinated cell includes a neighboring cell of the serving cell of the first user, and the neighboring cell of the serving cell of the first user includes a user having the same radio resource block as the first user, and the A coordinated cell of a user having the same resource block as the first user in a neighboring cell of a user's serving cell is a serving cell of the first user.
- the memory further includes some instructions, after the processor is executed, the control base station makes The base station pairs the first user with the second user by using a collaboration set shared by the first user and the second user;
- the shared collaboration set is a union of the first collaboration set and the second collaboration set.
- the memory further includes, after the processor is executed, the control base station causes the base station to obtain a first signal to interference and noise ratio SINR to the first user in the shared collaboration set;
- the memory further stores a segment of instructions, after the processor is executed, the control base station causes the base station to utilize Calculating the first SINR by using channel information in the shared cooperation set; And calculating, by using the channel information in the shared collaboration set, the second
- the memory further stores an instruction, the processor After the execution, the control base station acquires the SINR of the serving cell of the first user by using the channel information in the serving cell of the first user, and uses the SINR gain obtained by the first user in the shared cooperation set. Correcting an SINR of the serving cell of the first user, to obtain the first SINR;
- an embodiment of the present invention provides a base station, including: a user selection unit, a collaboration set determining unit, and a control unit;
- the user selection unit is configured to select a first user who has performed data transmission scheduling, and to select a second user that has not performed data transmission scheduling;
- the cooperation set determining unit is configured to use a serving cell and a coordinated cell of the first user as a first collaboration set of the first user; and to serve a serving cell and a collaboration of the second user a cell as a second collaboration set of the second user;
- the control unit in communication with the user selection unit, or in communication with the user selection unit and the collaboration set determination unit, configured to utilize the first collaboration set and the second collaboration set,
- the first user and the second user are paired.
- the collaboration set determining unit is specifically configured to: configure a coordinated cell of the first user, where the coordinated cell includes a first one of the first user a cooperative cell of the second type; or a coordinated cell of the first user is a second type of coordinated cell;
- the first type of coordinated cell includes a neighboring cell of the serving cell of the first user, and a difference between a reference signal received power RSRP of the neighboring cell of the serving cell of the first user and an RSRP of the first user in the serving cell
- the value is within the preset threshold range
- the second type of coordinated cell includes a neighboring cell of the serving cell of the first user, and the neighboring cell of the serving cell of the first user includes a user having the same radio resource block as the first user, and the A coordinated cell of a user having the same resource block as the first user in a neighboring cell of a user's serving cell is a serving cell of the first user.
- control unit further includes a shared collaboration set selection sub-unit, a pairing sub-unit;
- the shared collaboration set selection sub-unit is configured to select a collaboration set shared by the first user and the second user, where the shared collaboration set is the first collaboration set and the second collaboration set Union
- the pairing sub-unit is configured to perform, by using the cooperation set selected by the first user and the second user selected by the shared collaboration set selection sub-unit, to perform the first user and the second user pair.
- control unit further includes an SINR calculation subunit, and the SINR calculation a subunit is in communication with the shared cooperative set selection subunit and the paired subunit, and the SINR calculation subunit is configured to obtain a first SINR of the first user in the shared collaboration set And a second SINR configured to obtain the second user within the shared collaboration set;
- the pairing subunit is configured to be used by, by using the SINR calculation subunit, the first SINR of the first user in the shared collaboration set and the second user in the shared
- the second SINR in the collaboration set determines that the first user can be paired with the second user.
- the SINR calculation subunit is specifically configured to use channel information in the shared collaboration set, Calculating the first SINR; and configuring to calculate the second SINR by using channel information in the shared cooperation set.
- the SINR calculation subunit is specifically configured to be configured to Obtaining, by using channel information in the serving cell of the first user, an SINR of the serving cell of the first user, and using the SINR gain obtained by the first user in the shared collaboration set to the first user. Correcting the SINR of the serving cell to obtain the first SINR; and, configured to acquire, by using channel information in the serving cell of the second user, an SINR of the serving cell of the second user, The SINR gain obtained by the second user in the shared cooperation set corrects the first serving cell SINR to obtain the second SINR.
- an embodiment of the present invention provides a user scheduling method, including The base station selects a first user that has performed data transmission scheduling, and the first user is configured with a first cooperation set;
- the first cooperation set includes a serving cell and a coordinated cell of the first user; the base station selects a second user that does not perform data transmission scheduling, and the second user is configured with a second collaboration set;
- the second cooperation set includes a serving cell and a coordinated cell of the second user; and the first user and the second user are paired by using the first collaboration set and the second collaboration set.
- the coordinated cell of the first user includes: a first type of coordinated cell and a second type of coordinated cell of the first user; or a collaboration of the first user
- the cell is a second type of coordinated cell
- the first type of coordinated cell includes a neighboring cell of the serving cell of the first user, and a difference between a reference signal received power RSRP of the neighboring cell of the serving cell of the first user and an RSRP of the first user in the serving cell
- the value is within the preset threshold range
- the second type of coordinated cell includes a neighboring cell of the serving cell of the first user, and the neighboring cell of the serving cell of the first user includes a user having the same radio resource block as the first user, and the A coordinated cell of a user having the same resource block as the first user in a neighboring cell of a user's serving cell is a serving cell of the first user.
- the second possible implementation manner of the third aspect the using the first collaboration set and the second collaboration set, Pairing a user with the second user, specifically,
- first user is associated with the collaboration set shared by the first user and the second user
- the second user performs pairing
- the shared collaboration set is a union of the first collaboration set and the second collaboration set.
- the third possible implementation manner of the third aspect the using the first collaboration set and the second collaboration set, using the first user and the The second user performs pairing, specifically,
- the first user Based on the first SINR second SINR, it is determined that the first user can be paired with the second user.
- the fourth possible implementation manner of the third aspect the acquiring, by the first user, the first SINR in the shared collaboration set, specifically includes:
- the second SINR is calculated by using channel information in the shared cooperation set.
- the fifth possible implementation manner of the third aspect the acquiring the first user in the shared The first SINR in the collaboration set, specifically,
- the user scheduling method and the base station provided by the embodiment of the present invention are configured to configure a collaboration set for the to-be-paired user in the cell, where the cooperation set includes a coordinated cell and a serving cell of the user to be paired, and the collaboration set of the paired user is used to
- the paired users are asked to perform V-MIMO pairing attempts, which can improve the success rate of pairing, thereby obtaining higher pairing gain and improving system performance and capacity.
- FIG. 1 is a schematic diagram of an application scenario of a V-MIMO system according to an embodiment of the present invention
- FIG. 2 is a schematic diagram of a user scheduling method according to an embodiment of the present invention
- FIG. 3 is a schematic diagram of another user scheduling method according to an embodiment of the present invention.
- FIG. 4 is a schematic diagram of a base station according to an embodiment of the present invention.
- FIG. 5 is a schematic diagram of another base station according to an embodiment of the present disclosure.
- FIG. 6 is a schematic diagram of a processor in a base station according to an embodiment of the present invention. detailed description The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.
- the method and the base station provided by the embodiments of the present invention are applicable to a long-term evolution (LTE, Long-Term Evolution) communication system and a communication system for LTE subsequent evolution.
- the method provided by the embodiment of the present invention relates to a base station, where the base station may be an LTE communication.
- the RBs in the embodiments of the present invention refer to time-frequency resource blocks.
- the LTE system manages radio resources based on time-frequency resource blocks and allocates uplink and downlink radio resources to users. For example, each RB occupies 180 kHz bandwidth and 0.5 milliseconds.
- FIG. 1 is a schematic diagram of an application scenario of a V-MIMO system according to an embodiment of the present invention.
- the figure includes a cell 1, a cell 2, and a cell 3, and a base station 1, a base station 2, and a base station 3 that manage each cell.
- the cell 1 and the cell 2 are in the neighboring cell
- the cell 2 and the cell 3 are in the neighboring cell
- the first user equipment UE 1 is at the boundary between the cell 1 and the cell 2
- the second user equipment UE2 is in the cell 2 and the cell 3.
- the cell 2 is the serving cell of the UE1 and the UE2, and the first user forms a pair of V-MIMO user pairs with the second user, and can send a signal to the base station 2 of the cell 2 on the same RB, that is, the first user and the The second user separately transmits signals using a single antenna, but the signals received by the base station 2 can be regarded as two antennas from one user, thereby improving the spectrum efficiency of the system and expanding the system capacity.
- the V-MIMO user transmits signals to the same RB, the interference to the cell 1 and the cell 3 is enhanced, and at the same time, the first user and the second user also increase mutual interference during the signal transmission.
- the collaboration set is determined for the first user and the second user, where the cooperation set includes the serving cell and the coordinated cell of the first user or the second user.
- the serving cell in the embodiment of the present invention refers to a cell to which the cell to which the cell belongs can send a physical layer control signal and a cell for transmitting broadcast data to the user through a physical downlink control channel, and the serving cell may be selected in the prior art.
- the class selection method for example, the user compares the reference signals sent by the base stations of different cells, acquires channel parameters and signal to interference plus noise ratio (SINR) between different cell base stations and the user, and selects one of them. For the month of good service community. The user may also retrieve the channel parameters and SINRs sent by the base stations of the cells collected in the process of determining the serving cell to the selected serving cell base station.
- SINR signal to interference plus noise ratio
- the coordinated cell in the embodiment of the present invention means that different or the same data packet can be sent to the neighboring cell of the service cell of the user in the serving cell in the same resource block as the serving cell.
- an interference signal to other cells is generated, and after determining the coordinated cell of the user equipment, the signal sent by the user equipment to the serving cell may be jointly received and signaled by multiple cells at the same time.
- the combining process suppresses inter-cell interference.
- the base station of the serving cell may select a coordinated cell by transmitting a cooperation request to a base station of each neighboring cell.
- the base station of the neighboring cell may decide whether to accept the cooperation request according to whether the user in the neighboring cell meets the capacity requirement, and if receiving the cooperation request, send a reception cooperation request signal to the base station of the serving cell, share user data, and start cooperation.
- Communication Use collaborative communication technology for V-MIMO user pairing to reduce the number of pairs generated Disturb, improve pairing performance.
- FIG. 1 is only a schematic diagram of a V-MIMO system.
- the number and location distribution of neighboring cells; the number and location of user equipments in each cell may be determined according to networking requirements, and the present invention The embodiment is not particularly limited.
- the embodiment of the present invention provides a user scheduling method, which is related to a base station.
- the method flow is as shown in FIG. 2, and includes:
- the base station selects a first user that has performed data transmission scheduling, where the first user has a first cooperation set, and the first cooperation set includes a serving cell and a coordinated cell of the first user.
- the base station selects a second user that does not perform data transmission scheduling, and the second user has a second cooperation set.
- the second cooperation set includes a service cell and a coordinated cell of the second user.
- the base station Since the transmission channel capacity of the base station is usually smaller than the sum of the data transmission rates of all users in the cell managed by the base station, the base station needs to allocate appropriate channel transmission resources, that is, perform data transmission scheduling, according to different quality of service requirements of each user.
- the base station can transmit data to the scheduled user according to various existing scheduling rules. For example, the base station performs scheduling according to the service data type, and classifies various types of service data transmitted by the user into different queues according to the destination and priority order, and selects one or more selected queues according to the estimated value of the current channel state. A suitable amount of data is transmitted to complete a data transmission scheduling process.
- each neighboring cell uses the same scheduling rule, and independently schedules data transmission of users in the cell, and allocates transmission resources to users in the cell.
- each neighboring area can communicate through signaling interaction.
- the management information in the scheduling process which is called the scheduling information, includes the user identification information of the scheduled users in the neighboring area, the RB information, the collaboration set information determined by the neighboring users, and the channel information of the scheduled users in the neighboring area, including
- the neighboring area has scheduled the user's multi-antenna interference noise autocorrelation matrix (Ruu) and the corresponding channel transmission matrix H and other information.
- Rule multi-antenna interference noise autocorrelation matrix
- the base station to which the cell belongs may allocate channel transmission resources for the users that satisfy the condition.
- the remaining users need to wait for the next scheduling because they do not meet the scheduling conditions. Therefore, after each scheduling is completed, some users in the small area are successfully scheduled, and some users have not yet scheduled, that is, after one scheduling is completed, the successfully scheduled users can form a set of scheduled users, and the users have not been scheduled.
- Devices can form a collection of unscheduled users.
- the base station may select one user as the first user in the set of scheduled users, and the selection method may be various methods in the prior art, such as round Robin selection, random selection, proportional fair selection, etc., the present invention
- the embodiment is not particularly limited.
- the first user is selected by using a round robin method, and all scheduled users are accepted in a cyclic manner, and other waiting users must be served once before the selected user is served again. It can guarantee the fairness between users, that is, to ensure that each user can get certain service time and minimum delay requirements.
- the base station may also select at least one user as the second user in the unscheduled user set, and the selection method may also be various methods in the prior art, such as random selection, proportional fair selection, orthogonal selection, etc., the present invention
- the embodiment is not particularly limited.
- the second user can be selected according to the principle of proportional fairness.
- the priority of the user scheduling in the primary serving cell is initialized, and the priority is ranked according to the priority level.
- At least one user with a high priority is selected as a candidate pairing user, and the best channel is allocated to the user, and the user throughput is improved as much as possible while ensuring the fairness among the users in the cell, so that a better pairing effect can be obtained;
- the channel correlation between the paired users is considered, the orthogonality between the paired users is enhanced, and the interference between the paired users at the time of receiving detection is reduced.
- the range of the second user there are two ways to select the range of the second user. One is to select only one user for each pairing. If the pairing is unsuccessful, continue to select another user for the pairing attempt. Second, select 2 for each pairing. The above candidate second users respectively perform pairing attempts with the first user, and select the best performing users for pairing, which can improve the pairing effect.
- S101 and S102 can be executed simultaneously, or in an exchange sequence.
- S103 Pair the first user with the second user by using the first collaboration set and the second collaboration set.
- the first user and the second user may be paired according to the collaboration set shared by the first user and the second user, where the shared collaboration set may be a collaboration set and a first user of the first user.
- the union of the collaboration sets of the two users may also use the collaboration set of the first user as a shared collaboration set.
- the union of the collaboration set of the first user and the collaboration set of the second user as a shared collaboration set, including: the serving cell and the coordinated cell in the first collaboration set of the first user, and the second user
- the serving cell and the coordinated cell in the second cooperation set are subjected to a union process, and the union of the cooperation set is regarded as a cooperation set of the first paired user and the candidate paired user, that is, the two types of users have the same expansion Collaboration set.
- the first user that is not selected is user 1, the serving cell of user 1 is cell 1, and the coordinated cell is cell 2 and cell 3, and B' J
- the cooperation set of user 1 is ⁇ cell 1, cell 2, cell 3 ⁇ ; the selected second user is user 2, the serving cell of user 2 is cell 1, and the coordinated cell is cell 2 and cell 4, then the cooperation set of user 2
- the cooperation set of user 1 is ⁇ cell 1, cell 2, cell 3, cell 4 ⁇ , after the union is selected, the cooperation set of user 1 is ⁇ cell 1, cell 2, cell 3, cell 4 ⁇ , and the cooperation set of user 2 is ⁇ cell 1 , cell 2 , cell 3, cell 4 ⁇ , the cooperation set of user 1 and user 2 are extended.
- a limit may be preset for the scope of the collaboration set of the user.
- the collaboration set may exceed the preset collaboration set range, so the first paired user may be taken.
- the collaboration set serves as a collaboration set shared by the first paired user and the candidate paired user.
- the collaboration set is used as the collaboration set shared by the first user and the second user to be paired, which expands the cooperation set range of the users to be paired, and increases the number of cells participating in the first user or the second user collaborative communication, and better
- the inter-cell interference is suppressed, and the wireless spectrum utilization rate is improved. Therefore, judging the pairing between users in the union of the cooperative sets can improve the success rate of the pairing.
- the paired V-MIMO user pair communicates with the base station, It is also possible to obtain more signal combining gain and interference suppression gain.
- the manner of the pairing may be various manners in the prior art, for example, an orthogonal matching algorithm, a random matching algorithm, a determinant pairing algorithm, and the like, which are not specifically limited in the embodiment of the present invention.
- the user scheduling method and the base station provided by the embodiment of the present invention configure a cooperation set for the to-be-paired user in the cell, where the cooperation set includes the coordinated cell and the serving cell of the user to be paired, and selects the union of the collaboration set of the user to be paired as The collaboration set shared by the users to be paired, and the V-MIMO pairing attempt is performed on the to-be-paired users in the cooperation set union
- the scope of the collaboration set of the paired users is increased, the number of cells participating in the cooperative communication of the users to be paired is increased, the inter-cell interference is suppressed, the success rate of the pairing can be further improved, the high pairing gain is obtained, and the system performance and capacity are improved.
- the embodiment of the present invention further provides a user scheduling method. As shown in FIG. 3, the method process includes:
- Each neighboring cell base station independently schedules data transmission of the user in the cell.
- Each neighboring cell base station determines a set of scheduled users and an unscheduled user set in the cell, respectively.
- S203 The base station selects one user as the first user in the set of scheduled users, and waits for pairing.
- steps S201-S203 can be implemented on the basis of the step S101 of the embodiment shown in FIG. 2.
- steps S201-S203 can be implemented on the basis of the step S101 of the embodiment shown in FIG. 2.
- steps S201-S203 can be implemented on the basis of the step S101 of the embodiment shown in FIG. 2.
- the base station determines a first cooperation set of the first user, where the first cooperation set includes a serving cell and a coordinated cell of the first user, where the coordinated cell includes a first type of coordinated cell and a second type of coordinated cell. .
- the serving cell and the coordinated cell may be different cells in one base station, or may be different cells in different base stations, and are not particularly limited herein.
- the base station in the embodiment of the present invention is a base station to which the serving cell belongs unless otherwise specified.
- the first user may measure the RSRP of the serving cell, and obtain the measured value RSRPserv.
- the RSRP of the neighboring cell of the serving cell may also be measured, and the measured value RSRPneigh is obtained, and the two measured values are reported to the serving cell. Base station.
- X is a preset threshold, which can be obtained by simulation experiments or set according to the actual situation of the network, and the embodiment of the present invention does not make special
- the value of X can be between Odb and 10db. That is, the signal of the serving cell received by the first user is stronger than the selected first type of coordinated cell, but the difference of the signal strength is within a certain threshold.
- the signal combining gain can be brought to the first user.
- the user having the first type of coordinated cell may be a cell edge user of the serving cell, and the cell edge user may judge according to the distance from the user to the base station, or according to the channel fading corresponding to the radius corresponding to the location.
- the second type of coordinated cell may be determined according to the scheduling information of the serving cell and the neighboring cell, the coordinated set of the determined neighboring users, and the radio resource block information of the neighboring cell, and the neighboring channel information.
- the first user may consider the neighboring cell as the second type of collaboration. Community.
- the first user having the second type of coordinated cell may be any user in the service cell, and is not limited to the cell edge user.
- the second type of coordinated cell is selected for the first user in the foregoing manner, and the coordinated cell of the non-cell edge user may be extended for the first user that is the non-cell edge user, and the second type of coordinated cell may be used.
- the interference generated when the non-cell edge user sends a signal to the serving cell is converted into an available signal, and cooperative communication with the serving cell suppresses the neighboring cell interference, improves the SINR of the non-cell edge user, increases the range of users available for pairing, and improves The success rate of the pairing, further, through the coordinated cell Pairing between users enables greater pairing gain and increased system throughput.
- an upper limit of the user coordinated cell in the cell may be pre-defined. Therefore, when the coordinated cell of the first user is limited by the number, the first type of coordinated cell is first considered.
- the first user may have a first type of coordinated cell or a second type of coordinated cell, or both a first type of coordinated cell and a second type of coordinated cell.
- the base station selects at least one user as the second user in the unscheduled user set.
- the base station determines a second cooperation set of the second user, where the second cooperation set includes a serving cell and a coordinated cell of the second user.
- the method for determining the coordinated cell of the second user is the same as the first type of the coordinated cell of the first user, and details are not described herein.
- the foregoing steps 203-206 may be performed simultaneously, or in other orders, without particular limitation.
- the determining of the first collaboration set and the second collaboration set may be performed after the first user or the second user is selected, or may be the scheduled user collection before selecting the first user or the second user. All users in the unscheduled user set are pre-configured, and the present invention does not limit this.
- S207 Select a union of the first collaboration set and the second collaboration set as a collaboration set shared by the first user and the second user.
- the manner of selecting the union of the collaboration set is described in the embodiment shown in FIG. 2, and details are not described herein again.
- S208 Obtain channel information corresponding to the first user and the second user in the shared cooperation set, and calculate a post-processing SINR of the first user and the second user.
- the post-processing SINR represents a user SINR calculated by the base station or other control device for detecting a signal sent by the user, and performing noise equalization, etc., and obtaining a signal processing gain, corresponding to the pre-processing SINR.
- Post-processing SINR is the most important indicator of the flag throughput. It has a mapping relationship with system performance parameters such as channel quality, system capacity, and spectrum efficiency. It can reflect the change in system throughput, which can reflect the user performance gain after pairing. Therefore, the post-processing SINR can be used as an evaluation index for judging whether the first user can successfully pair with the first pairing user. The higher the user's SINR, the smaller the interference, the higher the system throughput, and the better the pairing effect.
- the post-processing SINR of the first user which is referred to as a first SINR
- the post-processing SINR of the second user which is called the second SINR
- the channel information includes a multi-antenna interference noise autocorrelation matrix (Ruu) and a corresponding channel transmission matrix 11 in a union set of the first user and the second user.
- Ruu multi-antenna interference noise autocorrelation matrix
- the cooperation set of user 0 is ⁇ cell 0, cell 1, cell 2 ⁇ ; if the cooperation set of user 1 is ⁇ cell 0, cell 2 ⁇ , then The cooperation set of user 0 and user 1 is a union of ⁇ cell 0, cell 1 and cell 2 ⁇ , each cell
- the number of receiving antennas of the associated base station is 2. If the user 0 and the user 1 are successfully paired, the number of receiving antennas that can be used to receive the signals sent by the user 0 and the user 1 is 6, respectively, antenna 1 antenna 2, .... .. antenna 6,
- h. Indicates the channel vector of user 0, 1 ⁇ represents the channel vector of user 1, h 01 , h. 2 ... h. 6 denotes a channel impulse response of user 0 in the channel corresponding to the 1-6th antenna in the coordinated three cells, h u , h 12 ... h 16 denotes the first in the three coordinated cells
- Ruu is an autocorrelation matrix of the mixed signal u of interference and noise generated by the interference signal matrix u composed of the mixed interference signals of interference and noise received by the 1-6th antenna in the coordinated cell. matrix.
- the extended channel matrix is used to calculate the post-processing SINR of the first user and the second user after the pairing, and various post-processing SINR calculation modes in the prior art can be used, and details are not described herein.
- the cooperative set is not in the form of a union, and the cooperation set of the user 0 is ⁇ cell 0, cell 1, cell 2 ⁇ ; the cooperation set of the user 1 is ⁇ cell 0, cell 2 ⁇ , ⁇ ' j + R, formula ( 2 ) hi
- the SINR calculations of the user 0 and the user 1 may also be performed as follows: (1) using the channel matrix and the corresponding Ruu in the cooperation set of the user 0, using the channel matrix of the serving cell of the user 1 and the corresponding Ruu, respectively calculating The SINR of user 0 and user 1; (2) calculating the SINR of user 0 and user 1 by using the channel matrix of the serving cell of user 0 and the corresponding Ruu, using the channel matrix in the cooperation set of user 1 and the corresponding R UU ; (3) Both user 0 and user 1 perform SINR calculation using the channel matrix of the serving cell and the corresponding Ruu.
- Different calculation methods have different degrees of complexity and performance effects. You can choose the appropriate method according to the actual situation of the network.
- the channel quality and the spectrum efficiency of the SINR mapping may be used to determine whether the first user and the second user can be successfully paired, and the first channel quality indicator of the first user is calculated by calculating the first SINR (CQI, Channel). a value of the second CQI calculated by the second SINR, determining whether the first CQI value and the second CQI value reach a certain threshold, and if a certain threshold is reached, according to the first CQI value and The second CQI value continues to evaluate the performance gain of the first user and the second user after pairing, that is, after the two users are paired, whether the respective spectral efficiency improvement amount ⁇ also reaches a certain threshold is matched.
- the threshold of the above CQI and the threshold of the lifting amount ⁇ can be based on experience. Or experimentally determined or determined based on the actual operation of the network.
- the first CQI or the second CQI may be obtained by mapping the first SINR or the second SINR; the spectrum efficiency may be determined by a mapping relationship between the first SINR or the second SINR and a modulation mode, where There are instructions, and will not be repeated here.
- the paired V-MIMO user pair can reuse the same time-frequency resource in the spatial dimension, which can make the paired user
- the throughput has increased, the spectrum utilization has increased, the pairing gain has been achieved, and the pairing has been successful.
- the lower the SINR of the user the lower the channel quality threshold required for pairing, or the channel condition after pairing, it is difficult to obtain more scheduling resources, and the evaluation of user pairing may lead to spectrum efficiency or throughput degradation.
- the user transmit power can also be calculated by using the SINR to represent the user performance gain after the pairing, so as to determine whether the first user and the second user can be successfully paired. specific
- the transmit power increment of the first user and the second user after pairing can be calculated according to the formula r ⁇ equation (3).
- the transmit power corresponding to the V-MIMO pairing of the first user at time t is the transmission data rate corresponding to PVMMO'A
- the transmit power corresponding to the V-MIMO pairing of the second user at time t is the transmission data corresponding to PvMM0 ' B.
- the rate, ⁇ 0) is the first user's single antenna input and output transmit power at time t is P ⁇ .
- Corresponding transmission data rate, W is the average transmission data rate of the first user in the time period, (0 is the average transmission data rate of the second user in the time period.
- the obtaining process of the transmission data rate at time t is: By user equipment t time
- the transmit power is calculated by the SINR, and the SINR and the spectral efficiency mapping table are searched according to the calculated value of the SINR to obtain the spectral efficiency, and the spectral efficiency is multiplied by the number of RBs obtained by the user equipment, that is, the transmission corresponding to the transmit power is obtained.
- Data rate The larger the SINR, the higher the spectrum efficiency, and the larger the corresponding transmission data rate.
- the larger the transmission power increment calculated according to formula (3) the better the pairing effect. If the transmit power increment reaches a certain threshold, the first user and the second user can be considered to be successfully paired, and the pairing is permitted.
- the existing various matching performance evaluation methods including the throughput optimization criterion, the fairness criterion, and the like, may be used, and the embodiment of the present invention does not specifically limit this.
- step S2010 is performed.
- S2010 deleting the first user from the scheduled user set, deleting the second user from the unscheduled user set, ending the pairing process, and returning to step 203, in the scheduled user set and the unscheduled user set. Each user is re-selected for a pairing attempt.
- the process returns to step 205, and at least one user is reselected in the unscheduled user set to perform a pairing attempt with the first user until the pairing is performed. Successfully, or traversing the unscheduled user set, no user can successfully pair with the first user, then end the pairing.
- the embodiment of the present invention may further include: S2011: After completing pairing of the first user and the second user, updating the collaboration set of the first user and the second user.
- the user's service cell will change, and the corresponding collaboration The cell may also be changed. Therefore, the first user who successfully pairs may reselect the coordinated cell according to S204 to obtain a new first cooperation set.
- the second user may reselect the coordinated cell according to S206 to obtain a new second collaboration set.
- the new first collaboration set is merged with the new second collaboration set, and the collaboration set shared by the first user and the second user is updated, and the pairing policy can be adjusted according to the user's movement condition to improve the pairing performance.
- the user scheduling method determines a set of users to be paired in a cell, and selects a union set of the users to be paired as a shared collaboration set, for example, configuring a coordinated cell for the to-be paired user as a non-cell edge user. Further expanding the scope of the collaboration set of the users to be paired, so that the users to be paired can obtain a higher SINR gain, so that there is a better chance of selecting the most suitable paired users to be paired, thereby improving the probability of success of the pairing. Higher pairing gain, which achieves the goal of reducing inter-cell interference, increasing system throughput, and increasing user data transmission rate.
- the SINR of the serving cell of the first user may be calculated by using channel information in a serving cell of the first user, by using the Correcting, by the SINR gain obtained by the first user in the shared cooperation set, the SINR of the serving cell of the first user, to obtain the first SINR; and using channel information in the serving cell of the second user Calculating an SINR of the serving cell of the second user, and correcting an SINR of the second serving cell by using an SINR gain obtained by the second user in the shared cooperation set, to obtain the second SINR.
- the SINR of the first user in the cooperation set is SINR1
- the SINR in the serving cell is SINR2, SINR.
- Gain SINR2-SINR1 (unit: db).
- the SINR gain may be used to modify the post-processing SINR in the serving cell of the first user or the second user, and the modified post-processing SINR may be used to map to the spectrum efficiency or the transmit power, and calculate the performance gain after the pairing.
- the mapping and calculation methods have been described in other embodiments, and are not mentioned here.
- a correction can be:
- SINR_l_pair SINR_l_pair '+ SINR_compgain_l
- SINR_2_pair SINR_2_pair '+ SINR_compgain_2
- SINR_compgain-1 and SINR_compgain-2 indicate the SINR gain obtained by the first paired user and the first candidate paired user in the cooperative set and concentrated; SINR_l_pair and SINR-2_pair indicate the corrected first pairing in the pairing process The post-processing SINR of the user and the first candidate paired user; SINR_l_pair, and SINR_2_pair, indicating the post-processing SINR in the serving cell of the first paired user and the first candidate paired user.
- the SINR gain is not considered in the pairing process.
- the post-processing SINR of the paired user is corrected, which can be used to select an optimized MCS, and improve the performance of data transmission between the V-MIMO user pair and the base station.
- SINR_l_pair SINR_l_pair' + 0
- SINR_2_pair SINR — 2_pair, + 0
- SINR—1— mcs SINR— 1— mcs, + SINR—compgain— 1
- SINR—2— mcs SINR— 2— mcs '+ SINR—compgain— 2
- SINR-1-mcs' and SINR-2-mcs' indicate the post-processing SINR of paired user 1 and paired user 2 after successful pairing
- SINR-1-mcs and SINR-2-mcs indicate repair The post-processing SINR after positive pairing is successful.
- the other parameters are as described above. Since the SINR gain is not considered in the pairing process, SINR_l_pair is equivalent to SINR-1-mcs, and SINR-2_pair is equivalent to SINR-2. — mcs,.
- SINR_l_pair SINR_l_pair + SINR_compgain_l
- SINR — 1 — mcs SINR — 2 — mcs + SINR — compgain — 1
- the first SINR of the first paired user may be calculated by using the channel information in the shared cooperation set; and the channel information in the serving cell of the candidate pairing user is used to determine the The second SINR of the candidate paired user.
- the first SINR of the first user may be calculated by using channel information in the serving cell of the first user, and the channel information is calculated by using the channel information in the cooperation set.
- the second SINR of the two users may be calculated by using channel information in the serving cell of the first user, and the channel information is calculated by using the channel information in the cooperation set.
- the gain of the V-MIMO pairing by the cell cooperation is indirectly considered, and the H and Ruu in the shared set of the shared layer are not required to be reported by the physical layer of the base station, and the physical layer of the base station does not need to calculate the first user.
- the SINR in the collaboration set shared by the second user is small in measurement amount and small in computational complexity. Further, the SINR of the user to be matched is obtained by different calculation methods and used for performance gain evaluation after pairing, and the system with different computing processing capability can be applied, and the efficiency and accuracy of the pairing process are improved.
- the embodiment of the present invention further provides a base station.
- the base station may be an evolved node e-NodeB in an LTE communication system or a class in an LTE subsequent evolution system.
- the base station and its internal modules the steps of the foregoing method embodiments may be implemented.
- the base station may include a user selection unit 401, a cooperation set determining unit 402, and a control unit 403, and each unit may be connected to each other by means of a communication bus.
- the user selection unit 401 is configured to select a first user who has performed data transmission scheduling, and to select a second user that has not performed data transmission scheduling.
- the selection method for the first user may be various methods in the prior art, such as polling selection, random selection, proportional fair selection, etc., which are not specifically limited in the embodiment of the present invention.
- the second pair of user selection methods may also be various methods in the prior art, such as random selection, proportional fair selection, orthogonal selection, etc., which are not particularly limited in the embodiment of the present invention.
- the cooperation set determining unit 402 is configured to use the serving cell and the coordinated cell of the first user as the first collaboration set of the first user, and to serve the serving cell of the second user and The coordinated cell serves as a second collaboration set of the second user.
- the collaboration set determining unit 402 may be specifically configured to: configure a coordinated cell of the first user, where the coordinated cell includes a first type of coordinated cell of the first user and a second type of collaboration a cell; or the coordinated cell of the first user is a second type of coordinated cell.
- the first type of coordinated cell includes a neighboring cell of the serving cell of the first user, and the difference between the RSRP of the neighboring cell of the serving cell of the first user and the RSRP of the first user in the serving cell is preset. Within the limits of the threshold.
- the second type of coordinated cell includes a neighboring cell of the serving cell of the first user, and the neighboring cell of the serving cell of the first user includes the same RB as the first user. And the coordinated cell of the user having the same resource block as the first user in the neighboring cell of the first user's serving cell is the serving cell of the first user.
- the second type of coordinated cell may be determined according to the scheduling information of the serving cell and the neighboring cell interaction user identification information, the determined cooperation group information of the neighboring cell user, and the RB information of the neighboring cell user, and the neighboring cell channel information.
- the joint signal transmission using the first type of coordinated cell can bring the signal combining gain to the first user.
- the user having the first type of coordinated cell may be a cell edge user of the serving cell, and the cell edge user may judge according to the distance from the user to the base station, or according to the channel fading corresponding to the radius corresponding to the location.
- the cooperative cell may be configured for the first user belonging to the non-cell edge user, and the scope of the cooperation set of the non-cell edge user may be extended, and the second type of coordinated cell may send the non-cell edge user to the serving cell
- the interference generated when the signal is transmitted is converted into an available signal, and cooperative communication with the serving cell suppresses the neighboring cell interference, improves the SINR of the non-cell edge user, increases the range of users that can be used for pairing, and improves the success rate of the pairing, further By pairing between users with coordinated cells, a larger pairing gain can be obtained, increasing system throughput.
- the collaboration set determining unit 402 is further configured to determine a coordinated cell for the second user. Since the second user is an unscheduled user, there is no interaction of the neighboring area scheduling information, and only the first type of coordinated cell is present. Therefore, the method for determining the coordinated cell of the second user is the same as the first type of coordinated cell of the first user, and is not described herein.
- the control unit 403 in communication with the user selection unit 401, or in communication with the user selection unit 401 and the collaboration set determination unit 402, configured to utilize the first collaboration set and the second collaboration set Pairing the first user and the second user.
- the pairing manner may be various methods in the prior art, for example, an orthogonal pairing algorithm, a random pairing algorithm, a determinant pairing algorithm, and the like, which are not particularly limited in the embodiment of the present invention.
- the control unit 403 may directly communicate with the user selection unit 401, acquiring information of the first collaboration set of the first user and the first user, and information of the second collaboration set of the second user and the second user;
- the user selection unit 401 and the cooperation set determining unit 402 may also be in communication with each other, and the information of the first user and the second user is acquired by the user selection unit 401, and the first user is acquired by the collaboration set determining unit 402.
- the information of a collaboration set, and the information of the second collaboration set of the second user may be directly communicate with the user selection unit 401, acquiring information of the first collaboration set of the first user and the first user, and information of the second collaboration set of the second user and the second user;
- the "communication" in the embodiment of the present invention may be direct communication or indirect communication; or may be logical communication or physical connection communication; or may be point-to-point communication, or use bus communication, which is not performed by the embodiment of the present invention. Any restrictions.
- control unit 403 may further include a shared collaboration set selection sub-unit 4031 and a pairing sub-unit 4032.
- the shared collaboration set selection sub-unit 4031 is configured to select a collaboration set shared by the first user and the second user, where the shared collaboration set is the first collaboration set and the second collaboration set The union of.
- the method for selecting the union of the collaboration set reference may be made to the related content in the foregoing method embodiments of the present invention, which is not described herein.
- the collaboration set of the first user may be taken as a collaboration set shared by the first user and the second user.
- the pairing sub-unit 4032 is configured to use, by the shared collaboration set selection sub-unit 4031, the collaboration set shared by the first user and the second user, for the first user and the second Users are paired.
- the collaboration set is used as the collaboration set shared by the first user and the second user to be paired, which expands the cooperation set range of the users to be paired, and increases the number of cells participating in the first user or the second user collaborative communication, and better
- the inter-cell interference is suppressed, and the wireless spectrum utilization rate is improved. Therefore, judging the pairing between users in the union of the cooperative sets can improve the success rate of the pairing.
- the paired V-MIMO user pair communicates with the base station, It is also possible to obtain more signal combining gain and interference suppression gain.
- control unit may further include an SINR calculation sub-unit 4033, and the SINR calculation sub-unit 4033 is in communication with the shared cooperation set selection sub-unit 4031 and the pairing sub-unit 4032.
- the SINR calculation sub-unit 4033 is configured to obtain a first SINR of the first user within the shared collaboration set; and configured to obtain the second user at the shared The second SINR within the collaboration set.
- the pairing sub-unit 4032 may be further configured to specifically use, by using the SINR calculation subunit, the first SINR of the first user in the shared collaboration set and the second user in the a second SINR in the shared collaboration set, determining the The first user can be paired with the second user.
- the SINR calculation sub-unit 5041 obtains channel information corresponding to the first user and the second user in the shared cooperation set according to the range of the cooperation set, and calculates a post-processing SINR of the first user and the second user, and determines Whether the first user and the second user to be paired are successfully paired.
- Post-processing SINR is the most important indicator of the flag throughput. It has a mapping relationship with system performance parameters such as channel quality, system capacity, and spectrum efficiency. It can reflect the change in system throughput, which can reflect the user performance gain after pairing. Therefore, the post-processing SINR can be used as an evaluation index for judging whether the first user can successfully pair with the first user. The higher the user's SINR, the smaller the interference, the higher the system throughput, and the better the matching effect.
- the channel quality and spectrum efficiency of the SINR mapping can be used to determine whether the first user and the second user can be successfully paired.
- the user transmit power can also be calculated by using the SINR to represent the user performance gain after the pairing, so as to determine whether the first user and the second user can be successfully paired.
- the existing various matching performance evaluation methods including the throughput optimization criterion, the fairness criterion, and the like, may be used, and the embodiment of the present invention does not specifically limit this.
- the existing matching method can be used to determine the performance gain of the system after the pairing, indicating that the first user and the second user are successfully paired, and the pairing process is ended.
- the pairing subunit 4032 can send a message to the user to select. Unit 401, reselecting one user in the scheduled user set and the unscheduled user set to perform a pairing attempt; If the system fails to meet the performance requirement of the paired performance gain, it indicates that the first user fails to pair with the second user, and the pairing subunit 4032 can send a message to the user selection unit 401 to reselect one of the unscheduled user sets.
- the user makes a pairing attempt with the first user until the pairing is successful, or traversing the unscheduled user set, and no user can successfully pair with the first user, then the pairing is ended.
- the SINR calculation sub-unit 4033 is further configured to: obtain, by using channel information in the serving cell of the first user, an SINR of the serving cell of the first user, by using the Correcting, by the first user, the SINR gain obtained in the shared cooperation set, the SINR of the serving cell of the first user, to obtain the first SINR; and configured to use the serving cell of the second user
- the channel information in the network, the SINR of the serving cell of the second user is obtained, and the SINR of the second serving cell is corrected by using the SINR gain obtained by the second user in the shared cooperation set, to obtain the second SINR.
- the SINR of the first user in the cooperative set is SINR1
- the SINR in the serving cell is SINR2
- the SINR gain is SINR2-SINR1 (unit: db).
- the SINR gain of the second user can be obtained.
- the SINR gain may be used to correct the SINR of the first user or the second user only in the serving cell
- the modified post-processing SINR may be used to map to the spectrum efficiency or the transmit power, and calculate the matched performance gain.
- the modified mapping and calculation method are described in the foregoing method embodiments, and are not described herein.
- the scheduled users when calculating the union of the collaboration set, may be mainly considered, and the actual processing capability of the system is considered, if the SINR is processed later.
- the correction will affect the system performance, and the correction of the post-processing SINR can be dominated by the scheduled users.
- the SINR determining subunit 5041 is further configured to: calculate, by using channel information in the shared cooperation set, a first SINR of the first user; Channel information in the serving cell, determining a second SINR of the second user.
- the SINR determining subunit 5041 is further configured to: calculate, by using channel information in a serving cell of the first user, a first SINR of the first user; The channel information in the union is used to calculate a second SINR of the second user.
- the gain of the V-MIMO pairing is considered indirectly, and the H and Ruu in the shared set of the shared layer are not required to be reported by the base station physical layer, and the physical layer of the base station does not need to calculate the first user and the second user.
- the SINR within the collaboration set is small in measurement and small in computational complexity. Further, the SINR of the user to be paired is obtained by different calculation methods and used for performance gain evaluation after pairing, and the system with different computing processing capability can be applied, which improves the efficiency and accuracy of the pairing process.
- the base station determines a set of users to be paired in a cell, and selects a union set of the users to be paired as a shared collaboration set, and in particular, configures a coordinated cell for the to-be-paired user that is a non-cell edge user. Further expanding the cooperation set range of the users to be paired, so that the users to be paired can obtain a higher SINR gain, so that there is a better chance of selecting the most suitable paired users to be paired, thereby improving the probability of success of the pairing, and obtaining more High pairing gain to reduce inter-cell interference and improve system Throughput, the purpose of increasing user data transfer rate. Further, the pairing process can be adaptively modified according to the computing processing capability of the base station, and the pairing efficiency and accuracy are improved.
- the embodiment of the present invention provides a base station.
- the base station may be an evolved node e-NodeB in an LTE communication system or a similar device in an LTE subsequent evolution system.
- the functions of the base station and its internal modules provided in this embodiment may implement the steps of the foregoing method embodiments.
- the base station may include a control base station 501, and the control base station 501 communicates with other parts of the base station via a communication bus 502, and other parts of the base station include, but are not limited to, for example, a transceiver 503 and or a power supply unit 504. Or the transmission part, or the alarm part, or the antenna part, or the operation and maintenance part, those skilled in the art can understand that the base station can have different components according to different implementation manners, which is not limited in this embodiment. Do an exhaustive example.
- the communication bus can be a local bus.
- the base station may also include a communication interface 505 for performing information interaction with other base stations.
- the communication interface 505 can be an X2 interface.
- the X2 interface defines a point-to-point connection between the base station and the base station in a logical manner.
- the specific implementation of the physical layer may be a copper cable, a microwave, an optical fiber, or the like, and is not particularly limited herein.
- the control base station 501 includes a memory 5011, a processor 5012, and a communication link 5013.
- the memory 5011 may be a type of memory/media in the prior art such as a flash memory or a random access memory (RAM), which is not particularly limited herein.
- the processor 5012 may be a multi-core processor or may be geographically dispersed
- the processor connected by the communication link may be a central processing unit (CPU), a digital signal processor (DSP) or other special processor.
- the memory 501 and the processor 502 may be integrated in a baseband processing unit (BBU) of the base station.
- BBU baseband processing unit
- the memory 5011 can be used to store some instructions.
- the processor 5012 can communicate with the memory 4011 via the communication link 5013.
- the instruction stored in the memory 5011 is executed by the processor 5012, and the control base station 501 can enable the base station to implement a user scheduling method of a virtual multiple input and output system, where the method includes: selecting has been performed The first user of the data transmission schedule, the first user is configured with a first cooperation set; the first cooperation set includes a serving cell and a coordinated cell of the first user.
- the second user is configured with a second cooperation set; and the second cooperation set includes a serving cell and a collaboration cell of the second user.
- the first user and the second user are paired using the first collaboration set and the second collaboration set.
- the method for selecting the first user may be various methods in the prior art, such as a polling selection, a random selection, a proportional fair selection, and the like, which are not specifically limited in the embodiment of the present invention.
- the second pair of user selection methods may also be various methods in the prior art, such as random selection, proportional fair selection, orthogonal selection, etc., in the embodiment of the present invention. This is not particularly limited.
- the processor 5012 may further include an operator 5012a, a general-purpose register 5012b, and a control component 5012c.
- the control component may further include an instruction decoder 5012c.
- the operation controller 5023c (2) may use the arithmetic unit 5012a to perform arithmetic and logical operation operations of the instructions stored in the memory 5011.
- the general-purpose register 5012b can be used to store register operands temporarily stored in the process of executing the instructions stored in the memory 5011 and intermediate operation results.
- the control unit 5012c may include an instruction decoder 5012c(1) for decoding instructions stored in the memory 5011 and issuing control signals for performing various operations to be performed for each instruction, the operation controller 5012c (2) for receiving the control signal to complete a specific operation of the instruction.
- the control unit 5012c may be a micro-program control chip with a micro-storage as a core or a control circuit with a logical hard-wired structure as the main control, which is not limited in the embodiment of the present invention.
- the devices in the processor 5012 can communicate with each other, or the devices can be integrated into one hardware.
- the memory 5011 may further store some instructions.
- the control base station 501 may enable the coordinated cell of the first user to include the first user. a cooperative cell of the second type and a coordinated cell of the second type; or the coordinated cell of the first user is a second type of coordinated cell.
- the first type of coordinated cell includes a neighboring cell of the serving cell of the first user, the RSRP of the neighboring cell of the serving cell of the first user, and the first user in the serving cell
- the RSRP difference is within the preset threshold.
- the second type of coordinated cell includes a neighboring cell of the serving cell of the first user, and the neighboring cell of the serving cell of the first user includes a user having the same RB as the first user, and the first user
- the coordinated cell of the user in the neighboring cell of the serving cell that has the same resource block as the first user is the serving cell of the first user.
- the joint signal transmission using the first type of coordinated cell can bring the signal combining gain to the first user.
- the user having the first type of coordinated cell may be a cell edge user of the serving cell, and the cell edge user may judge according to the distance from the user to the base station, or according to the channel fading corresponding to the radius corresponding to the location.
- the cooperative cell may be configured for the first user belonging to the non-cell edge user, and the range of the coordinated set of the non-cell edge user may be extended, and the second type of coordinated cell may send the non-cell edge user to the serving cell
- the interference generated when the signal is transmitted is converted into an available signal, and cooperative communication with the serving cell suppresses the neighboring cell interference, improves the SINR of the non-cell edge user, increases the range of users that can be used for pairing, and improves the success rate of the pairing, further By pairing between users with coordinated cells, a larger pairing gain can be obtained, increasing system throughput.
- the memory 5011 further stores some instructions.
- the control base station 501 may enable the base station to determine a cooperative cell for the second user. Since the second user is an unscheduled user, there is no interaction of the neighboring cell scheduling information, and only the first type of coordinated cell is present.
- the pairing manner of the first user and the second user may be various manners in the prior art, for example, an orthogonal matching algorithm, a random matching algorithm, a determinant pairing algorithm, etc., which are not specifically limited in this embodiment of the present invention. .
- the memory 5011 further stores some instructions.
- the control base station 501 may enable the base station to select a collaboration set shared by the first user and the second user, where the shared The collaboration set is a union of the first collaboration set and the second collaboration set.
- the first user and the second user are paired using the union of the collaboration sets.
- the method for selecting the union of the collaboration sets can be referred to the related description in other embodiments of the present invention, and is not described herein.
- the collaboration set of the first user may be taken as a collaboration set shared by the first user and the second user.
- the collaboration set is used as the collaboration set shared by the first user and the second user to be paired, which expands the cooperation set range of the users to be paired, and increases the number of cells participating in the first user or the second user collaborative communication, and better
- the inter-cell interference is suppressed, and the wireless spectrum utilization rate is improved. Therefore, judging the pairing between users in the union of the cooperative sets can improve the success rate of the pairing.
- the paired V-MIMO user pair communicates with the base station, It is also possible to obtain more signal combining gain and interference suppression gain.
- the memory 5011 further stores some instructions.
- the control base station 501 may enable the base station to calculate a first SINR of the first user in the shared collaboration set. Calculating a second SINR of the second user in the shared collaboration set, and determining that the first user can be paired with the second user.
- the processor 5012 can obtain the first user and the second user in total. The cooperation collects the corresponding channel information, calculates the post-processing SINR of the first user and the second user, and determines whether the first user and the second user to be paired are successfully paired.
- Post-processing SINR is the most important indicator of the flag throughput. It has a mapping relationship with system performance parameters such as channel quality, system capacity, and spectrum efficiency. It can reflect the change in system throughput, which can reflect the user performance gain after pairing. Therefore, the post-processing SINR can be used as an evaluation index for judging whether the first user can successfully pair with the first user. The higher the user's SINR, the smaller the interference, the higher the system throughput, and the better the matching effect.
- the channel quality and spectrum efficiency of the SINR mapping can be used to determine whether the first user and the second user can be successfully paired.
- the user transmit power can also be calculated by using the SINR to represent the user performance gain after the pairing, so as to determine whether the first user and the second user can be successfully paired.
- the existing various matching performance evaluation methods including the throughput optimization criterion, the fairness criterion, and the like, may be used, and the embodiment of the present invention does not specifically limit this.
- the processor 5012 can be in the scheduled user. Each of the set and unscheduled user sets reselects a user to perform a pairing attempt; if the system fails to meet the performance requirement of the paired performance gain, indicating that the first user fails to pair with the second user, the processor 5012 may send Reselecting a user in the unscheduled user set to perform a pairing attempt with the first user until the pairing is successful, or traversing the unscheduled user set, no user can If the pairing with the first user is successful, the pairing ends.
- the memory 5011 further stores some instructions.
- the control base station 501 may enable the base station to use the channel information in the serving cell of the first user to obtain the SINR of the serving cell of the first user, and correcting the SINR of the serving cell of the first user by using the SINR gain obtained by the first user in the shared cooperation set, to obtain the first SINR;
- the base station may acquire the SINR of the serving cell of the second user by using the channel information in the serving cell of the second user, and use the SINR gain obtained by the second user in the shared cooperation set.
- the second serving cell SINR is corrected to obtain the second SINR.
- the SINR of the first user in the cooperative set is SINR1
- the SINR in the serving cell is SINR2
- the SINR gain is SINR2-SINR1 (unit: db).
- the SINR gain of the second user can be obtained.
- the SINR gain may be used to correct the SINR of the first user or the second user only in the serving cell
- the modified post-processing SINR may be used to map to the spectrum efficiency or the transmit power, and calculate the performance gain after the pairing.
- the modification method and the modified mapping and calculation method are described in the foregoing method embodiments, and are not described herein.
- the scheduled users when calculating the union of the collaboration set, may be the main ones, and the actual processing capability of the system may be considered.
- the SINR correction affects the system performance
- the post-processing is performed.
- the SINR correction can be based on the scheduled users. Correcting the calculated SINR in the serving cell, indirectly considering the gain of the cell cooperation for the V-MIMO pairing, without requiring the base station physical layer to report the H and Ruu in the shared cooperative set, and the base station physical layer does not need to calculate the first user and
- the SINR in the collaboration set shared by the second user has a small measurement amount and a small computational complexity. Further, the SINR of the user to be paired is obtained by different calculation methods and used for the performance gain evaluation after the pairing, and the system with different computing processing capabilities can be applied, and the efficiency and accuracy of the pairing process are improved.
- the "communication” or “communication bus” in the embodiment of the present invention may be direct communication or indirect communication; or may be logical communication or physical connection communication; or may be point-to-point communication, or use bus communication, the present invention The embodiment does not limit this.
- the user scheduling method provided by the embodiment of the present invention determines a set of users to be paired in a cell, and selects a union set of the users to be paired as a shared collaboration set, and expands the scope of the user collaboration set, and the user can obtain a higher SINR.
- Gain there is a better chance to choose the most suitable user to be paired, which improves the probability of pairing success.
- V-MIMO pairing between cells can achieve better pairing gain, reduce inter-cell interference, and improve system. Throughput, improve coverage at the cell edge and increase the rate of user data transmission. Further, the adaptability of the pairing process can be modified according to the computing processing capability of the base station, and the pairing efficiency and accuracy are improved.
- the present invention can be implemented by means of software plus a necessary general hardware platform, and of course To pass the hardware, but in many cases the former is a better implementation.
- the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium, including a plurality of instructions for making a A computer device (which may be a personal computer, server, or network device, etc.) performs all or part of the steps of the methods described in various embodiments of the present invention.
- the foregoing storage medium includes: a USB flash drive, a removable hard disk, a read only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes.
- the base station embodiment described above is only illustrative.
- the division of the module or unit is only a logical function division.
- there may be another division manner for example, multiple units or components may be used. Combined or can be integrated into another system, or some features can be ignored, or not executed.
- the units described as the separate components may or may not be physically separated, and the components displayed as the unit may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. .
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Abstract
Provided are a user scheduling method for a virtual multiple-input multiple-output (V-MIMO) system, and a base station. The user scheduling method comprises: determining a scheduled user set and a non-scheduled user set; selecting one user from the scheduled user set as a first user; selecting at least one user from the non-scheduled user set as a second user; determining a range of a first cooperation set and a range of a second cooperation set, the first cooperation set comprising a serving cell and a cooperation cell of the first user, the second cooperation set comprising a serving cell and a cooperation cell of the second user; and according to a pre-set evaluation criterion, judging whether the first user is successfully matched with the second user. By means of the technical solution provided in the embodiments of the present invention, a higher matching success rate and a higher matching gain of a V-MIMO can be obtained, thereby achieving the purposes of reducing the interference between cells, increasing the system throughput, improving the coverage of cell edges and increasing the user data transmission rate.
Description
基站及用户调度方法 Base station and user scheduling method
技术领域 Technical field
本发明实施例涉及通信技术领域,尤其涉及一种虚拟多输入输出 系统的基站设备及用户调度方法。 背景技术 The embodiments of the present invention relate to the field of communications technologies, and in particular, to a base station device and a user scheduling method for a virtual multiple input/output system. Background technique
多输入输出( MIMO, Multiple- Input Multiple- Output )技术是 LTE ( Long Term Evolution, 长期演进)通信系统中的一项重要技术, 能 够提高系统容量和频谱效率,使得系统能够在有限的频谱资源下获得 更高的传输速率和系统吞吐量。通过在通信系统的接收端和发送端都 采用多根天线, 获得空间复用增益, 提高通信信道的容量。 Multiple Input-Output (MIMO) technology is an important technology in LTE (Long Term Evolution) communication system, which can improve system capacity and spectrum efficiency, enabling the system to be under limited spectrum resources. Get higher transfer rates and system throughput. By using multiple antennas at both the receiving end and the transmitting end of the communication system, spatial multiplexing gain is obtained, and the capacity of the communication channel is increased.
在实际的应用中, 用户设备( UE , user equipment )会受到体积、 重量、 功耗, 以及成本等因素的限制, 不适合配备多根天线, 为此, 提出了虚拟 MIMO ( V-MIMO, Virtual MIMO )技术, 通过特定的 选择方法将符合标准的用户分成一组,构成一个共享时频资源来发送 数据的虚拟的多天线阵列, 可以取得 MIMO系统的空间复用效果。 可 见, 选择合适的用户调度方法是实现 V-MIMO技术的关键。 In practical applications, user equipment (UE, user equipment) is limited by factors such as size, weight, power consumption, and cost. It is not suitable for multiple antennas. For this reason, virtual MIMO (V-MIMO, Virtual) is proposed. The MIMO technology can divide the users who conform to the standard into a group by a specific selection method to form a virtual multi-antenna array that shares the time-frequency resources to transmit data, and can achieve the spatial multiplexing effect of the MIMO system. It can be seen that choosing the appropriate user scheduling method is the key to implementing V-MIMO technology.
现有技术中的 V-MIMO配对方法,在小区内任意用户中选取用户 进行配对, 由于配对用户采用同一个时频资源块 (RB, resource block) 向基站发送信号, 会增加对邻区的干扰, 过多的干扰会降低配对的成 功率, 减少用户配对带来的增益。 发明内容 In the prior art, the V-MIMO pairing method selects users to be paired among any users in the cell. Since the paired users use the same time-frequency resource block (RB) to send signals to the base station, the interference to the neighboring area is increased. Excessive interference will reduce the success rate of pairing and reduce the gain brought by user pairing. Summary of the invention
本发明实施例提供了一种虚拟多输入输出系统的用户调度方法 及基站, 能够提升配对的成功率。
第一方面, 本发明实施例提供了一种基站, 一种基站, 其特征在 于, 包括一个控制基站, 所述控制基站通过通信总线与所述基站其他 部分相通信; The embodiment of the invention provides a user scheduling method and a base station of a virtual multiple input and output system, which can improve the success rate of pairing. In a first aspect, an embodiment of the present invention provides a base station, and a base station, including: a control base station, where the control base station communicates with other parts of the base station by using a communication bus;
所述控制基站包括: 存储器, 处理器, 通信链路; The control base station includes: a memory, a processor, a communication link;
所述存储器, 用于存储指令; The memory is configured to store an instruction;
所述处理器, 通过所述通信链路和所述存储器相通信; 所述存储器中存储的一些指令, 通过所述处理器执行后, 所述控 制基站使得所述基站可以实现一种虚拟多输入输出系统的用户调度 方法, 所述方法包括: The processor is in communication with the memory through the communication link; after the instructions stored in the memory are executed by the processor, the control base station enables the base station to implement a virtual multiple input A user scheduling method of the output system, the method comprising:
选择已进行数据传输调度的第一用户,所述第一用户配置有第一 协作集; 所述第一协作集中包括所述第一用户的服务小区及协作小 区; Selecting a first user that has performed data transmission scheduling, the first user is configured with a first collaboration set; the first collaboration set includes a serving cell and a collaboration cell of the first user;
所述基站选择未进行数据传输调度的第二用户,所述第二用户配 置有第二协作集;所述第二协作集中包括所述第二用户的服务小区及 协作小区; The base station selects a second user that does not perform data transmission scheduling, and the second user is configured with a second cooperation set; the second cooperation set includes a serving cell and a coordinated cell of the second user;
利用所述第一协作集与所述第二协作集,将所述第一用户与所述 第二用户进行配对。 The first user and the second user are paired using the first collaboration set and the second collaboration set.
在第一方面的第一种可能的实现方式中,所述存储器中存储的一 些指令, 所述处理器执行后, 所述控制基站使得所述第一用户的协作 小区包括所述第一用户的第一类协作小区和第二类协作小区;或者所 述第一用户的协作小区为第二类协作小区; In a first possible implementation manner of the first aspect, after the processor is executed, the control base station causes the coordinated cell of the first user to include the first user. a first type of coordinated cell and a second type of coordinated cell; or the coordinated cell of the first user is a second type of coordinated cell;
所述第一类协作小区包括所述第一用户的服务小区的邻区,所述
第一用户的服务小区的邻区的参考信号接收功率 RSRP与所述第一用 户在服务小区的 RSRP的差值处于预设的门限值范围内; The first type of coordinated cell includes a neighboring cell of the serving cell of the first user, The difference between the reference signal received power RSRP of the neighboring cell of the serving cell of the first user and the RSRP of the first user in the serving cell is within a preset threshold;
所述第二类协作小区包括所述第一用户的服务小区的邻区,所述 第一用户的服务小区的邻区包含与所述第一用户具有相同无线资源 块的用户,且所述第一用户的服务小区的邻区中的与所述第一用户具 有相同资源块的用户的协作小区是所述第一用户的服务小区。 The second type of coordinated cell includes a neighboring cell of the serving cell of the first user, and the neighboring cell of the serving cell of the first user includes a user having the same radio resource block as the first user, and the A coordinated cell of a user having the same resource block as the first user in a neighboring cell of a user's serving cell is a serving cell of the first user.
结合第一方面或第一方面的第一种可能的实现方式,第一方面的 第二种可能的实现方式, 所述存储器还存储有一些指令, 所述处理器 执行后,所述控制基站使得所述基站利用所述第一用户与第二用户共 有的协作集, 将所述第一用户与所述第二用户进行配对; With reference to the first aspect, or the first possible implementation manner of the first aspect, the second possible implementation manner of the first aspect, the memory further includes some instructions, after the processor is executed, the control base station makes The base station pairs the first user with the second user by using a collaboration set shared by the first user and the second user;
所述共有的协作集是所述第一协作集与所述第二协作集的并集。 结合第一方面的第二种可能的实现方式,第一方面的第三种可能 的实现方式, 所述存储器还存储有一些指令, 所述处理器执行后, 所 述控制基站使得所述基站获取到所述第一用户在所述共有的协作集 内的第一信号与干扰噪声比 SINR; The shared collaboration set is a union of the first collaboration set and the second collaboration set. With reference to the second possible implementation manner of the first aspect, the third possible implementation manner of the first aspect, the memory further includes, after the processor is executed, the control base station causes the base station to obtain a first signal to interference and noise ratio SINR to the first user in the shared collaboration set;
以及, 获取所述第二用户在所述共有的协作集内的第二 SINR; 以及, 基于所述第一 SINR和第二 SINR, 判断所述第一用户可以 与所述第二用户配对。 And obtaining a second SINR of the second user in the shared collaboration set; and determining, according to the first SINR and the second SINR, that the first user can be paired with the second user.
结合第一方面的第三种可能的实现方式,第一方面的第四种可能 的实现方式, 所述存储器还存储了一段指令, 所述处理器执行后, 所 述控制基站使得所述基站利用所述共有的协作集内的信道信息,计算 得到所述第一 SINR;
以及, 利用所述共有的协作集内的信道信息, 计算得到所述第二With reference to the third possible implementation manner of the first aspect, the fourth possible implementation manner of the first aspect, the memory further stores a segment of instructions, after the processor is executed, the control base station causes the base station to utilize Calculating the first SINR by using channel information in the shared cooperation set; And calculating, by using the channel information in the shared collaboration set, the second
SINR。 SINR.
结合第一方面的第四种可能的实现方式或第一方面的第四种可 能的实现方式, 第一方面的第五种可能的实现方式, 所述存储器还存 储了一段指令, 所述处理器执行后, 所述控制基站利用所述第一用户 的服务小区内的信道信息, 获取所述第一用户的服务小区的 SINR, 利用所述第一用户在所述共有的协作集中获得的 SINR增益对所述第 一用户的服务小区的 SINR进行修正, 得到所述第一 SINR; In conjunction with the fourth possible implementation of the first aspect, or the fourth possible implementation of the first aspect, the fifth possible implementation manner of the first aspect, the memory further stores an instruction, the processor After the execution, the control base station acquires the SINR of the serving cell of the first user by using the channel information in the serving cell of the first user, and uses the SINR gain obtained by the first user in the shared cooperation set. Correcting an SINR of the serving cell of the first user, to obtain the first SINR;
以及, 利用所述第二用户的服务小区内的信道信息, 获取所述第 二用户的服务小区的 SINR, 利用所述第二用户在所述共有的协作集 中获得的 SINR增益对所述第一服务小区 SINR进行修正, 得到所述第 二 S賺。 And acquiring, by using channel information in the serving cell of the second user, an SINR of the serving cell of the second user, and using the SINR gain obtained by the second user in the shared cooperation set to the first The serving cell SINR is corrected to obtain the second S earn.
第二方面,本发明实施例提供了一种基站, 包括,用户选择单元, 协作集确定单元, 控制单元; In a second aspect, an embodiment of the present invention provides a base station, including: a user selection unit, a collaboration set determining unit, and a control unit;
所述用户选择单元,被配置成用于选择已进行数据传输调度的第 一用户, 以及用于选择未进行数据传输调度的第二用户; The user selection unit is configured to select a first user who has performed data transmission scheduling, and to select a second user that has not performed data transmission scheduling;
所述协作集确定单元,被配置成用于将所述第一用户的服务小区 及协作小区作为所述第一用户的第一协作集;以及用于将所述第二用 户的服务小区及协作小区作为所述第二用户的第二协作集; The cooperation set determining unit is configured to use a serving cell and a coordinated cell of the first user as a first collaboration set of the first user; and to serve a serving cell and a collaboration of the second user a cell as a second collaboration set of the second user;
所述控制单元, 与所述用户选择单元相通信, 或者与所述用户选 择单元以及协作集确定单元相通信,被配置成利用所述第一协作集与 所述第二协作集, 对所述第一用户和所述第二用户进行配对。
在第二方面的第一种可能的实现方式中,所述协作集确定单元具 体用于: 被配置成确定所述第一用户的协作小区, 所述协作小区包括 所述第一用户的第一类协作小区与第二类协作小区;或者所述第一用 户的协作小区为第二类协作小区; The control unit, in communication with the user selection unit, or in communication with the user selection unit and the collaboration set determination unit, configured to utilize the first collaboration set and the second collaboration set, The first user and the second user are paired. In a first possible implementation manner of the second aspect, the collaboration set determining unit is specifically configured to: configure a coordinated cell of the first user, where the coordinated cell includes a first one of the first user a cooperative cell of the second type; or a coordinated cell of the first user is a second type of coordinated cell;
所述第一类协作小区包括所述第一用户的服务小区的邻区,所述 第一用户的服务小区的邻区的参考信号接收功率 RSRP与所述第一用 户在服务小区的 RSRP的差值处于预设的门限值范围内; The first type of coordinated cell includes a neighboring cell of the serving cell of the first user, and a difference between a reference signal received power RSRP of the neighboring cell of the serving cell of the first user and an RSRP of the first user in the serving cell The value is within the preset threshold range;
所述第二类协作小区包括所述第一用户的服务小区的邻区,所述 第一用户的服务小区的邻区包含与所述第一用户具有相同无线资源 块的用户,且所述第一用户的服务小区的邻区中的与所述第一用户具 有相同资源块的用户的协作小区是所述第一用户的服务小区。 The second type of coordinated cell includes a neighboring cell of the serving cell of the first user, and the neighboring cell of the serving cell of the first user includes a user having the same radio resource block as the first user, and the A coordinated cell of a user having the same resource block as the first user in a neighboring cell of a user's serving cell is a serving cell of the first user.
结合第二方面或第二方面的第一种可能的实现方式,第二方面的 第二种可能的实现方式, 所述控制单元还包括共有协作集选取子单 元, 配对子单元; With reference to the second aspect or the first possible implementation manner of the second aspect, the second possible implementation manner of the second aspect, the control unit further includes a shared collaboration set selection sub-unit, a pairing sub-unit;
所述共有协作集选取子单元,被配置成用于选取所述第一用户与 第二用户共有的协作集,所述共有的协作集是所述第一协作集与所述 第二协作集的并集; The shared collaboration set selection sub-unit is configured to select a collaboration set shared by the first user and the second user, where the shared collaboration set is the first collaboration set and the second collaboration set Union
所述配对子单元,被配置成用于, 利用所述共有协作集选取子单 元选取的所述第一用户与第二用户共有的协作集,对所述第一用户与 所述第二用户进行配对。 The pairing sub-unit is configured to perform, by using the cooperation set selected by the first user and the second user selected by the shared collaboration set selection sub-unit, to perform the first user and the second user pair.
结合第二方面的第二种可能的实现方式,第二方面的第三种可能 的实现方式, 所述控制单元还包括 SINR计算子单元, 所述 SINR计算
子单元与所述共有协作集选取子单元以及所述配对子单元相通信, 所述 SINR计算子单元, 被配置成用于获得所述第一用户在所述 共有的协作集内的第一 SINR; 以及, 被配置成用于获得所述第二用 户在所述共有的协作集内的第二 SINR; With reference to the second possible implementation manner of the second aspect, the third possible implementation manner of the second aspect, the control unit further includes an SINR calculation subunit, and the SINR calculation a subunit is in communication with the shared cooperative set selection subunit and the paired subunit, and the SINR calculation subunit is configured to obtain a first SINR of the first user in the shared collaboration set And a second SINR configured to obtain the second user within the shared collaboration set;
所述配对子单元, 被配置成具体用于, 利用所述 SINR计算子单 元获得的所述第一用户在所述共有的协作集内的第一 SINR和所述第 二用户在所述共有的协作集内的第二 SINR, 判断所述第一用户可以 与所述第二用户配对。 The pairing subunit is configured to be used by, by using the SINR calculation subunit, the first SINR of the first user in the shared collaboration set and the second user in the shared The second SINR in the collaboration set determines that the first user can be paired with the second user.
结合第二方面的第三种可能的实现方式,第二方面的第四种可能 的实现方式, 所述 SINR计算子单元具体用于, 被配置成利用所述共 有的协作集内的信道信息, 计算得到所述第一 SINR; 以及, 被配置 成利用所述共有的协作集内的信道信息, 计算得到所述第二 SINR。 With reference to the third possible implementation manner of the second aspect, the fourth possible implementation manner of the second aspect, the SINR calculation subunit is specifically configured to use channel information in the shared collaboration set, Calculating the first SINR; and configuring to calculate the second SINR by using channel information in the shared cooperation set.
结合第二方面的第三种可能的实现方式或第二方面的第四种可 能的实现方式, 第二方面的第五种可能的实现方式, 所述 SINR计算 子单元具体用于, 被配置成, 利用所述第一用户的服务小区内的信道 信息, 获取所述第一用户的服务小区的 SINR, 利用所述第一用户在 所述共有的协作集中获得的 SINR增益对所述第一用户的服务小区的 SINR进行修正, 得到所述第一 SINR; 以及, 被配置成, 利用所述第 二用户的服务小区内的信道信息, 获取所述第二用户的服务小区的 SINR, 利用所述第二用户在所述共有的协作集中获得的 SINR增益对 所述第一服务小区 SINR进行修正, 得到所述第二 SINR。 With reference to the third possible implementation manner of the second aspect, or the fourth possible implementation manner of the second aspect, the fifth possible implementation manner of the second aspect, the SINR calculation subunit is specifically configured to be configured to Obtaining, by using channel information in the serving cell of the first user, an SINR of the serving cell of the first user, and using the SINR gain obtained by the first user in the shared collaboration set to the first user. Correcting the SINR of the serving cell to obtain the first SINR; and, configured to acquire, by using channel information in the serving cell of the second user, an SINR of the serving cell of the second user, The SINR gain obtained by the second user in the shared cooperation set corrects the first serving cell SINR to obtain the second SINR.
第三方面, 本发明实施例提供了一种用户调度方法, 包括,
基站选择已进行数据传输调度的第一用户,所述第一用户配置有 第一协作集; In a third aspect, an embodiment of the present invention provides a user scheduling method, including The base station selects a first user that has performed data transmission scheduling, and the first user is configured with a first cooperation set;
所述第一协作集中包括所述第一用户的服务小区及协作小区; 所述基站选择未进行数据传输调度的第二用户,所述第二用户配 置有第二协作集; The first cooperation set includes a serving cell and a coordinated cell of the first user; the base station selects a second user that does not perform data transmission scheduling, and the second user is configured with a second collaboration set;
所述第二协作集中包括所述第二用户的服务小区及协作小区; 利用所述第一协作集与所述第二协作集,将所述第一用户与所述 第二用户进行配对。 The second cooperation set includes a serving cell and a coordinated cell of the second user; and the first user and the second user are paired by using the first collaboration set and the second collaboration set.
在第三方面的第一种可能的实现方式中,所述第一用户的协作小 区包括: 所述第一用户的第一类协作小区和第二类协作小区; 或者所 述第一用户的协作小区为第二类协作小区; In a first possible implementation manner of the third aspect, the coordinated cell of the first user includes: a first type of coordinated cell and a second type of coordinated cell of the first user; or a collaboration of the first user The cell is a second type of coordinated cell;
所述第一类协作小区包括所述第一用户的服务小区的邻区,所述 第一用户的服务小区的邻区的参考信号接收功率 RSRP与所述第一用 户在服务小区的 RSRP的差值处于预设的门限值范围内; The first type of coordinated cell includes a neighboring cell of the serving cell of the first user, and a difference between a reference signal received power RSRP of the neighboring cell of the serving cell of the first user and an RSRP of the first user in the serving cell The value is within the preset threshold range;
所述第二类协作小区包括所述第一用户的服务小区的邻区,所述 第一用户的服务小区的邻区包含与所述第一用户具有相同无线资源 块的用户,且所述第一用户的服务小区的邻区中的与所述第一用户具 有相同资源块的用户的协作小区是所述第一用户的服务小区。 The second type of coordinated cell includes a neighboring cell of the serving cell of the first user, and the neighboring cell of the serving cell of the first user includes a user having the same radio resource block as the first user, and the A coordinated cell of a user having the same resource block as the first user in a neighboring cell of a user's serving cell is a serving cell of the first user.
结合第三方面或第三方面的第一种可能的实现方式,第三方面的 第二种可能的实现方式, 所述利用所述第一协作集与所述第二协作 集, 将所述第一用户与所述第二用户进行配对, 具体包括, With reference to the third aspect or the first possible implementation manner of the third aspect, the second possible implementation manner of the third aspect, the using the first collaboration set and the second collaboration set, Pairing a user with the second user, specifically,
根据所述第一用户与第二用户共有的协作集,将所述第一用户与
所述第二用户进行配对; And the first user is associated with the collaboration set shared by the first user and the second user The second user performs pairing;
所述共有的协作集是所述第一协作集与所述第二协作集的并集。 结合第三方面的第二种可能的实现方式,第三方面的第三种可能 的实现方式, 所述利用所述第一协作集与所述第二协作集, 将所述第 一用户与所述第二用户进行配对, 具体包括, The shared collaboration set is a union of the first collaboration set and the second collaboration set. With reference to the second possible implementation manner of the third aspect, the third possible implementation manner of the third aspect, the using the first collaboration set and the second collaboration set, using the first user and the The second user performs pairing, specifically,
获取所述第一用户在所述共有的协作集内的第一 SINR; Obtaining a first SINR of the first user in the shared collaboration set;
获取所述第二用户在所述共有的协作集内的第二 SINR; Obtaining a second SINR of the second user in the shared collaboration set;
基于所述第一 SINR第二 SINR, 判断所述第一用户可以与所述第 二用户配对。 Based on the first SINR second SINR, it is determined that the first user can be paired with the second user.
结合第三方面的第三种可能的实现方式,第三方面的第四种可能 的实现方式, 所述获取所述第一用户在所述共有的协作集内的第一 SINR, 具体包括: With reference to the third possible implementation manner of the third aspect, the fourth possible implementation manner of the third aspect, the acquiring, by the first user, the first SINR in the shared collaboration set, specifically includes:
利用所述共有的协作集内的信道信息, 计算得到所述第一 SINR; 所述获取所述第二用户在所述共有的协作集内的第二 SINR, 具 体包括: Calculating the first SINR by using the channel information in the shared collaboration set; and acquiring the second SINR of the second user in the shared collaboration set, including:
利用所述共有的协作集内的信道信息, 计算得到所述第二 SINR。 结合第三方面的第三种可能的实现方式或第三方面的第四种可 能的实现方式, 第三方面的第五种可能的实现方式, 所述获取所述第 一用户在所述共有的协作集内的第一 SINR, 具体包括, The second SINR is calculated by using channel information in the shared cooperation set. With reference to the third possible implementation manner of the third aspect, or the fourth possible implementation manner of the third aspect, the fifth possible implementation manner of the third aspect, the acquiring the first user in the shared The first SINR in the collaboration set, specifically,
利用所述第一用户的服务小区内的信道信息,获取所述第一用户 的服务小区的 SINR , 利用所述第一用户在所述共有的协作集中获得 的 SINR增益对所述第一用户的服务小区的 SINR进行修正, 得到所述
第一 SINR; Acquiring the SINR of the serving cell of the first user by using the channel information in the serving cell of the first user, and using the SINR gain obtained by the first user in the shared collaboration set to the first user The SINR of the serving cell is corrected, and the obtained First SINR;
所述获取所述第二用户在所述共有的协作集内的第二 SINR, 具 体包括, Obtaining, by the second user, a second SINR in the shared collaboration set, specifically,
利用所述第二用户的服务小区内的信道信息,获取所述第二用户 的服务小区的 SINR , 利用所述第二用户在所述共有的协作集中获得 的 SINR增益对所述第一服务小区 SINR进行修正, 得到所述第二 SINR。 Acquiring the SINR of the serving cell of the second user by using the channel information in the serving cell of the second user, and using the SINR gain obtained by the second user in the shared cooperation set to the first serving cell The SINR is corrected to obtain the second SINR.
采用本发明实施例提供的用户调度方法及基站,为小区内的待配 对用户配置协作集,所述协作集中包括待配对用户的协作小区及服务 小区, 利用所述配对用户的协作集, 对所述待配对用户进行 V-MIMO 配对尝试, 可以提升配对的成功率, 进而获取较高的配对增益, 提高 系统性能和容量。 附图说明 The user scheduling method and the base station provided by the embodiment of the present invention are configured to configure a collaboration set for the to-be-paired user in the cell, where the cooperation set includes a coordinated cell and a serving cell of the user to be paired, and the collaboration set of the paired user is used to The paired users are asked to perform V-MIMO pairing attempts, which can improve the success rate of pairing, thereby obtaining higher pairing gain and improving system performance and capacity. DRAWINGS
图 1是本发明实施例提供的一种 V-MIMO系统应用场景示意图; 图 2是本发明实施例提供的一种用户调度方法示意图; 1 is a schematic diagram of an application scenario of a V-MIMO system according to an embodiment of the present invention; FIG. 2 is a schematic diagram of a user scheduling method according to an embodiment of the present invention;
图 3是本发明实施例提供的另一种用户调度方法示意图; 图 4是本发明实施例提供的一种基站示意图; 3 is a schematic diagram of another user scheduling method according to an embodiment of the present invention; FIG. 4 is a schematic diagram of a base station according to an embodiment of the present invention;
图 5是本发明实施例提供的另一种基站示意图; FIG. 5 is a schematic diagram of another base station according to an embodiment of the present disclosure;
图 6是本发明实施例提供的一种基站中的处理器示意图。 具体实施方式
为使本发明的目的、技术方案和优点更加清楚, 下面将结合附图 对本发明实施方式作进一步详细描述。 FIG. 6 is a schematic diagram of a processor in a base station according to an embodiment of the present invention. detailed description The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.
本发明实施例提供的方法及基站适用于长期演进 ( LTE , Long-Term Evolution )通信系统以及 LTE后续演进的通信系统, 本发 明实施例提供的方法涉及一种基站, 所述基站可以是 LTE通信系统中 的演进型节点 B ( e-NodeB, evolved NodeB )或者 LTE后续演进的通 信系统中的类似设备。 The method and the base station provided by the embodiments of the present invention are applicable to a long-term evolution (LTE, Long-Term Evolution) communication system and a communication system for LTE subsequent evolution. The method provided by the embodiment of the present invention relates to a base station, where the base station may be an LTE communication. An evolved Node B (e-NodeB, evolved NodeB) in the system or a similar device in a LTE subsequently evolved communication system.
本发明实施例所述的 RB是指时频资源块。 LTE系统以时频资源块 为基本单位管理无线资源, 并为用户分配上下行无线资源。 比如, 每 个 RB占据 180千赫兹带宽和 0.5毫秒时间。 The RBs in the embodiments of the present invention refer to time-frequency resource blocks. The LTE system manages radio resources based on time-frequency resource blocks and allocates uplink and downlink radio resources to users. For example, each RB occupies 180 kHz bandwidth and 0.5 milliseconds.
图 1是本发明实施例提供的的一种 V-MIMO系统应用场景示意 图, 图中包括小区 1、 小区 2和小区 3 , 及管理各小区的基站 1 , 基站 2 及基站 3。 其中, 小区 1和小区 2互为邻区, 小区 2和小区 3互为邻区, 第一用户设备 UE 1处于小区 1与小区 2的边界处, 第二用户设备 UE2处 于小区 2与小区 3的边界处, 假设小区 2为 UE1及 UE2的服务小区, 第 一用户与第二用户形成一对 V-MIMO用户对,可以在同样的 RB上向小 区 2的基站 2发送信号,即第一用户与第二用户分别使用单天线发送信 号,但所述基站 2接收到的信号可以看作是来自一个用户的两根天线, 从而提升了系统的频谱效率, 扩展了系统容量。 然而, 由于 V-MIMO 用户对占用相同的 RB发送信号, 增强了对于小区 1和小区 3的干扰, 同时, 第一用户与第二用户在信号发送过程中也会增加相互间的干 扰。
在本发明实施例中, 可以在上述用户进行配对之前, 分别为第一 用户及第二用户确定协作集 ,所述协作集中包括所述第一用户或第二 用户的服务小区及协作小区。 1 is a schematic diagram of an application scenario of a V-MIMO system according to an embodiment of the present invention. The figure includes a cell 1, a cell 2, and a cell 3, and a base station 1, a base station 2, and a base station 3 that manage each cell. The cell 1 and the cell 2 are in the neighboring cell, the cell 2 and the cell 3 are in the neighboring cell, the first user equipment UE 1 is at the boundary between the cell 1 and the cell 2, and the second user equipment UE2 is in the cell 2 and the cell 3. At the boundary, it is assumed that the cell 2 is the serving cell of the UE1 and the UE2, and the first user forms a pair of V-MIMO user pairs with the second user, and can send a signal to the base station 2 of the cell 2 on the same RB, that is, the first user and the The second user separately transmits signals using a single antenna, but the signals received by the base station 2 can be regarded as two antennas from one user, thereby improving the spectrum efficiency of the system and expanding the system capacity. However, since the V-MIMO user transmits signals to the same RB, the interference to the cell 1 and the cell 3 is enhanced, and at the same time, the first user and the second user also increase mutual interference during the signal transmission. In the embodiment of the present invention, before the pairing by the user, the collaboration set is determined for the first user and the second user, where the cooperation set includes the serving cell and the coordinated cell of the first user or the second user.
本发明实施例中所述的服务小区是指,该小区所属的基站可以通 过物理下行控制信道向用户发送物理层控制信号以及发送广播数据 的小区,服务小区的选取可以是现有技术中的各类选取方式, 例如由 用户比较不同小区基站发送的参考信号,获取不同小区基站与所述用 户之间的信道参数以及信号与干扰和噪声比 ( SINR , signal to interference plus noise ratio ), 选择其一为月良务小区。 用户还可以夺在 确定服务小区的过程中收集到的各小区基站发来的信道参数和 SINR 反馈给选定的所述服务小区基站。 The serving cell in the embodiment of the present invention refers to a cell to which the cell to which the cell belongs can send a physical layer control signal and a cell for transmitting broadcast data to the user through a physical downlink control channel, and the serving cell may be selected in the prior art. The class selection method, for example, the user compares the reference signals sent by the base stations of different cells, acquires channel parameters and signal to interference plus noise ratio (SINR) between different cell base stations and the user, and selects one of them. For the month of good service community. The user may also retrieve the channel parameters and SINRs sent by the base stations of the cells collected in the process of determining the serving cell to the selected serving cell base station.
本发明实施例中所述协作小区是指,能够在与所述服务小区相同 的资源块中发送不同或者相同的数据包到服务小区中用户的服务小 区的邻区。 所述用户在发送信号到所述服务小区时, 会产生对其他小 区的干扰信号, 而确定用户设备的协作小区后, 用户设备发送给服务 小区的信号可以同时由多个小区联合接收并进行信号合并处理,从而 抑制了小区间干扰。 The coordinated cell in the embodiment of the present invention means that different or the same data packet can be sent to the neighboring cell of the service cell of the user in the serving cell in the same resource block as the serving cell. When the user sends a signal to the serving cell, an interference signal to other cells is generated, and after determining the coordinated cell of the user equipment, the signal sent by the user equipment to the serving cell may be jointly received and signaled by multiple cells at the same time. The combining process suppresses inter-cell interference.
所述服务小区的基站可以通过向各相邻小区的基站发送协作请 求来选择协作小区。相邻小区的基站可以根据所述相邻小区内用户是 否满足容量需求为依据来决定是否接受协作请求, 若接受协作请求, 则向服务小区的基站发送接收协作请求信号,共享用户数据, 开始协 作通信。 将协作通信技术用于 V-MIMO用户配对, 减少配对产生的干
扰, 提升配对性能。 The base station of the serving cell may select a coordinated cell by transmitting a cooperation request to a base station of each neighboring cell. The base station of the neighboring cell may decide whether to accept the cooperation request according to whether the user in the neighboring cell meets the capacity requirement, and if receiving the cooperation request, send a reception cooperation request signal to the base station of the serving cell, share user data, and start cooperation. Communication. Use collaborative communication technology for V-MIMO user pairing to reduce the number of pairs generated Disturb, improve pairing performance.
需要说明的是, 图 1仅为一种 V-MIMO系统的示意图, 实际情况 下, 对邻区的数量、 位置分布; 各小区内用户设备的数量、 位置等可 以根据组网需求确定, 本发明实施例不做特别限定。 It should be noted that FIG. 1 is only a schematic diagram of a V-MIMO system. In actual cases, the number and location distribution of neighboring cells; the number and location of user equipments in each cell may be determined according to networking requirements, and the present invention The embodiment is not particularly limited.
参考图 1所提供的背景,本发明实施例提供了一种用户调度方法, 涉及一种基站, 方法流程如图 2所示, 包括: With reference to the background provided in FIG. 1, the embodiment of the present invention provides a user scheduling method, which is related to a base station. The method flow is as shown in FIG. 2, and includes:
S101 : 基站选择已进行数据传输调度的第一用户, 所述第一用户 具有第一协作集;所述第一协作集中包括所述第一用户的服务小区及 协作小区。 S101: The base station selects a first user that has performed data transmission scheduling, where the first user has a first cooperation set, and the first cooperation set includes a serving cell and a coordinated cell of the first user.
S102: 所述基站选择未进行数据传输调度的第二用户, 所述第二 用户具有第二协作集;所述第二协作集中包括所述第二用户的服务小 区及协作小区。 S102: The base station selects a second user that does not perform data transmission scheduling, and the second user has a second cooperation set. The second cooperation set includes a service cell and a coordinated cell of the second user.
由于基站的传输信道容量通常小于基站管理的小区内所有用户 的数据传输速率总和, 因此基站需要根据各用户不同的服务质量要 求, 来为用户分配合适的信道传输资源, 即进行数据传输调度。 基站 可以依据现有的各类调度规则来对调度用户的数据传输。 例如,基站 依据业务数据类型进行调度,将用户传输的各类业务数据按照目的地 和优先级顺序分入不同的队列, 根据当前信道状态的估计值, 从选定 的一个或多个队列里选择合适数量的数据进行传输,完成一次数据传 输调度过程。 可选的, 在本发明实施例中, 各相邻小区使用相同的调 度规则, 各自独立调度本小区内用户的数据传输, 为小区内用户分配 传输资源。 在调度完成后, 各邻区之间可以通过信令交互的方式交流
调度过程中的管理信息, 称为调度信息, 包括邻区已调度用户的用户 标识信息, RB信息、 邻区用户已确定的协作集信息等, 还可以交互 邻区已调度用户的信道信息,包括邻区已调度用户的多天线干扰噪声 自相关矩阵(Ruu )及相应的信道传输矩阵 H等信息。 Since the transmission channel capacity of the base station is usually smaller than the sum of the data transmission rates of all users in the cell managed by the base station, the base station needs to allocate appropriate channel transmission resources, that is, perform data transmission scheduling, according to different quality of service requirements of each user. The base station can transmit data to the scheduled user according to various existing scheduling rules. For example, the base station performs scheduling according to the service data type, and classifies various types of service data transmitted by the user into different queues according to the destination and priority order, and selects one or more selected queues according to the estimated value of the current channel state. A suitable amount of data is transmitted to complete a data transmission scheduling process. Optionally, in the embodiment of the present invention, each neighboring cell uses the same scheduling rule, and independently schedules data transmission of users in the cell, and allocates transmission resources to users in the cell. After the scheduling is completed, each neighboring area can communicate through signaling interaction. The management information in the scheduling process, which is called the scheduling information, includes the user identification information of the scheduled users in the neighboring area, the RB information, the collaboration set information determined by the neighboring users, and the channel information of the scheduled users in the neighboring area, including The neighboring area has scheduled the user's multi-antenna interference noise autocorrelation matrix (Ruu) and the corresponding channel transmission matrix H and other information.
按照预设的调度规则,小区所属的基站可以为部分满足条件的用 户分配信道传输资源, 剩余用户由于不满足调度条件, 需要等待下次 调度。 因此, 每次完成调度后, 小区内会有部分用户被成功调度, 部 分用户尚未进行调度, 即一次调度完成后,被成功调度的用户可以构 成一个已调度用户集合,所述尚未被调度的用户设备可以构成一个未 调度用户集合。 According to the preset scheduling rule, the base station to which the cell belongs may allocate channel transmission resources for the users that satisfy the condition. The remaining users need to wait for the next scheduling because they do not meet the scheduling conditions. Therefore, after each scheduling is completed, some users in the small area are successfully scheduled, and some users have not yet scheduled, that is, after one scheduling is completed, the successfully scheduled users can form a set of scheduled users, and the users have not been scheduled. Devices can form a collection of unscheduled users.
基站可以在所述已调度用户集合中选择一个用户作为第一用 户,选择方法可以是现有技术中的各类方法,例如轮询( Round Robin ) 选择, 随机选择, 比例公平选择等, 本发明实施例中不做特别限定。 The base station may select one user as the first user in the set of scheduled users, and the selection method may be various methods in the prior art, such as round Robin selection, random selection, proportional fair selection, etc., the present invention The embodiment is not particularly limited.
可选的, 采用轮循方法选择所述第一用户, 将所有已调度用户按 照循环的方式接受服务, 在选出的用户被再次服务之前, 其他等待用 户必须都被服务一次。 可以保障用户之间的公平性, 即保障每个用户 都能得到一定的服务时间和最低时延要求。 Optionally, the first user is selected by using a round robin method, and all scheduled users are accepted in a cyclic manner, and other waiting users must be served once before the selected user is served again. It can guarantee the fairness between users, that is, to ensure that each user can get certain service time and minimum delay requirements.
基站也可以在在所述未调度用户集合中选择至少一个用户作为 第二用户,选择方法也可以是现有技术中的各类方法,例如随机选择、 比例公平选择、 正交选择等, 本发明实施例中不做特别限定。 The base station may also select at least one user as the second user in the unscheduled user set, and the selection method may also be various methods in the prior art, such as random selection, proportional fair selection, orthogonal selection, etc., the present invention The embodiment is not particularly limited.
可选的, 可以比例公平原则选择第二用户。 首先根据比例公平来 初始化主服务小区内用户调度的优先级, 按优先级高低排序, 选择优
先级排序高的至少一个用户作为候选配对用户,为该用户分配最好的 信道,在保证小区内用户间比例公平的同时使得用户吞吐量尽可能的 提高, 可以获得更好的配对效果; 其次在配对后的小区间联合接收过 程中, 考虑了配对用户之间的信道相关性, 增强了配对用户之间的正 交性, 减少接收检测时配对用户之间的干扰。 Optionally, the second user can be selected according to the principle of proportional fairness. Firstly, according to the proportional fairness, the priority of the user scheduling in the primary serving cell is initialized, and the priority is ranked according to the priority level. At least one user with a high priority is selected as a candidate pairing user, and the best channel is allocated to the user, and the user throughput is improved as much as possible while ensuring the fairness among the users in the cell, so that a better pairing effect can be obtained; In the inter-cell joint reception process after pairing, the channel correlation between the paired users is considered, the orthogonality between the paired users is enhanced, and the interference between the paired users at the time of receiving detection is reduced.
可选的, 对第二用户的范围选取可以有两种方式, 一是每次配对 只选取一个用户, 如果配对不成功, 则继续选取另一个用户进行配对 尝试; 二是每次配对选取 2个以上的候选第二用户, 分别与第一用户 进行配对尝试, 选取性能最好的用户进行配对, 可以提升配对效果。 Optionally, there are two ways to select the range of the second user. One is to select only one user for each pairing. If the pairing is unsuccessful, continue to select another user for the pairing attempt. Second, select 2 for each pairing. The above candidate second users respectively perform pairing attempts with the first user, and select the best performing users for pairing, which can improve the pairing effect.
可选的, S101和 S102可以同时执行, 或者交换顺序执行。 Optionally, S101 and S102 can be executed simultaneously, or in an exchange sequence.
S103: 利用所述第一协作集与所述第二协作集, 将所述第一用 户与所述第二用户进行配对。 S103: Pair the first user with the second user by using the first collaboration set and the second collaboration set.
可选的,可以根据所述第一用户与第二用户共有的协作集将所述 第一用户与所述第二用户进行配对,所述共有的协作集可以是第一用 户的协作集与第二用户的协作集的并集,也可以将所述第一用户的协 作集作为共有的协作集。 Optionally, the first user and the second user may be paired according to the collaboration set shared by the first user and the second user, where the shared collaboration set may be a collaboration set and a first user of the first user. The union of the collaboration sets of the two users may also use the collaboration set of the first user as a shared collaboration set.
采用第一用户的协作集与第二用户的协作集的并集作为共有的 协作集, 包括, 将所述第一用户的第一协作集内的服务小区及协作小 区,与所述第二用户的第二协作集内的服务小区及协作小区做并集处 理,将该协作集的并集视为所述第一配对用户以及所述候选配对用户 的协作集, 即两类用户拥有相同的扩大协作集。 没选择的第一用户 为用户 1 , 用户 1的服务小区为小区 1 , 协作小区为小区 2及小区 3 , 贝' J
用户 1的协作集为 {小区 1 , 小区 2, 小区 3} ; 选择的第二用户为用户 2, 用户 2的服务小区为小区 1 , 协作小区为小区 2及小区 4, 则用户 2的协 作集为 {小区 1 , 小区 2, 小区 4} , 则选取并集之后, 用户 1的协作集为 {小区 1 , 小区 2, 小区 3 , 小区 4} , 用户 2的协作集为 {小区 1 , 小区 2, 小区 3 , 小区 4} , 用户 1及用户 2的协作集均有扩展。 Using the union of the collaboration set of the first user and the collaboration set of the second user as a shared collaboration set, including: the serving cell and the coordinated cell in the first collaboration set of the first user, and the second user The serving cell and the coordinated cell in the second cooperation set are subjected to a union process, and the union of the cooperation set is regarded as a cooperation set of the first paired user and the candidate paired user, that is, the two types of users have the same expansion Collaboration set. The first user that is not selected is user 1, the serving cell of user 1 is cell 1, and the coordinated cell is cell 2 and cell 3, and B' J The cooperation set of user 1 is {cell 1, cell 2, cell 3}; the selected second user is user 2, the serving cell of user 2 is cell 1, and the coordinated cell is cell 2 and cell 4, then the cooperation set of user 2 For {cell 1, cell 2, cell 4}, after the union is selected, the cooperation set of user 1 is {cell 1, cell 2, cell 3, cell 4}, and the cooperation set of user 2 is {cell 1 , cell 2 , cell 3, cell 4}, the cooperation set of user 1 and user 2 are extended.
可选的, 为了保证系统整体吞吐量的质量, 可以为用户的协作集 范围预设一个限制 ,此时采用协作集并集可能会超过预设的协作集范 围, 因此, 可以取第一配对用户的协作集作为第一配对用户与候选配 对用户共有的协作集。 Optionally, in order to ensure the quality of the overall throughput of the system, a limit may be preset for the scope of the collaboration set of the user. In this case, the collaboration set may exceed the preset collaboration set range, so the first paired user may be taken. The collaboration set serves as a collaboration set shared by the first paired user and the candidate paired user.
采用协作集并集作为待配对的第一用户及第二用户共有的协作 集, 扩大了待配对用户的协作集范围, 增加了参与第一用户或第二用 户协作通信的小区数量, 更好地抑制了小区间干扰,提高了无线频谱 利用率, 因此, 在协作集并集内判断用户间的配对, 可以提升配对的 成功率, 配对成功后的 V-MIMO用户对在与基站进行通信时, 也能够 获得更多的信号合并增益以及干扰抑制增益。 The collaboration set is used as the collaboration set shared by the first user and the second user to be paired, which expands the cooperation set range of the users to be paired, and increases the number of cells participating in the first user or the second user collaborative communication, and better The inter-cell interference is suppressed, and the wireless spectrum utilization rate is improved. Therefore, judging the pairing between users in the union of the cooperative sets can improve the success rate of the pairing. When the paired V-MIMO user pair communicates with the base station, It is also possible to obtain more signal combining gain and interference suppression gain.
所述配对的方式可以是现有技术中的各种方式, 例如, 正交配 对算法、 随机配对算法、 行列式配对算法等, 本发明实施例对此不做 特别限定。 The manner of the pairing may be various manners in the prior art, for example, an orthogonal matching algorithm, a random matching algorithm, a determinant pairing algorithm, and the like, which are not specifically limited in the embodiment of the present invention.
采用本发明实施例提供的用户调度方法及基站,为小区内的待配 对用户配置协作集,所述协作集中包括待配对用户的协作小区及服务 小区,选取待配对用户的协作集的并集作为所述待配对用户共有的协 作集, 在协作集并集内对所述待配对用户进行 V-MIMO配对尝试, 扩
大了待配对用户的协作集范围,增加了参与待配对用户协作通信的小 区数量, 抑制了小区间干扰, 可以进一步提升配对的成功率, 获取高 的配对增益, 提高系统性能和容量。 The user scheduling method and the base station provided by the embodiment of the present invention configure a cooperation set for the to-be-paired user in the cell, where the cooperation set includes the coordinated cell and the serving cell of the user to be paired, and selects the union of the collaboration set of the user to be paired as The collaboration set shared by the users to be paired, and the V-MIMO pairing attempt is performed on the to-be-paired users in the cooperation set union The scope of the collaboration set of the paired users is increased, the number of cells participating in the cooperative communication of the users to be paired is increased, the inter-cell interference is suppressed, the success rate of the pairing can be further improved, the high pairing gain is obtained, and the system performance and capacity are improved.
进一步的, 可参考前述实施例, 本发明实施例还提供了一种用户 调度方法, 如图 3所示, 方法流程包括: Further, referring to the foregoing embodiment, the embodiment of the present invention further provides a user scheduling method. As shown in FIG. 3, the method process includes:
S201 : 各相邻小区基站独立调度小区内用户的数据传输。 S201: Each neighboring cell base station independently schedules data transmission of the user in the cell.
S202:各相邻小区基站分别确定小区内已调度用户集合和未调度 用户集合。 S202: Each neighboring cell base station determines a set of scheduled users and an unscheduled user set in the cell, respectively.
S203:所述基站在所述已调度用户集合中选择一个用户作为第一 用户, 等待配对。 S203: The base station selects one user as the first user in the set of scheduled users, and waits for pairing.
上述步骤 S201-S203可以在图 2所示实施例步骤 S101基石出上实现, 具体可以参照图 2所示实施例的详细描述, 相同部分不做贅述。 The foregoing steps S201-S203 can be implemented on the basis of the step S101 of the embodiment shown in FIG. 2. For details, refer to the detailed description of the embodiment shown in FIG. 2, and the same parts are not described herein.
S204: 所述基站确定第一用户的第一协作集, 所述第一协作集中 包括所述第一用户的服务小区与协作小区,所述协作小区包括第一类 协作小区和第二类协作小区。 S204: The base station determines a first cooperation set of the first user, where the first cooperation set includes a serving cell and a coordinated cell of the first user, where the coordinated cell includes a first type of coordinated cell and a second type of coordinated cell. .
所述服务小区与所述协作小区可以是一个基站下的不同小区;也 可以是不同基站下的不同小区, 在此不做特别限定。 本发明实施例中 所述基站如无特别说明, 均为服务小区所属的基站。 The serving cell and the coordinated cell may be different cells in one base station, or may be different cells in different base stations, and are not particularly limited herein. The base station in the embodiment of the present invention is a base station to which the serving cell belongs unless otherwise specified.
可选的, 所述第一用户可以测量服务小区的 RSRP, 获取测量值 RSRPserv; 也可以测量所述服务小区的邻区的 RSRP , 获取测量值 RSRPneigh, 并将上述两种测量值上报给服务小区的基站。 Optionally, the first user may measure the RSRP of the serving cell, and obtain the measured value RSRPserv. The RSRP of the neighboring cell of the serving cell may also be measured, and the measured value RSRPneigh is obtained, and the two measured values are reported to the serving cell. Base station.
通过判断所述 RSRPserv及所述 RSRPneigh的差值是否满足公式
RSRPserv - RSRPneigh>XdB , 来确定第一用户的第一类协作小区, 差值其中 X为预设的门限值, 可以由仿真实验获取或者按网络实际情 况设定, 本发明实施例不做特别限定, 例如, X的取值可以在 Odb到 10db之间。即所述第一用户接收到的服务小区的信号强于选定的第一 类协作小区, 但信号强度的差值在一定门限范围内。 By determining whether the difference between the RSRPserv and the RSRPneigh satisfies the formula RSRPserv - RSRPneigh>XdB, to determine the first type of coordinated cell of the first user, where X is a preset threshold, which can be obtained by simulation experiments or set according to the actual situation of the network, and the embodiment of the present invention does not make special For example, the value of X can be between Odb and 10db. That is, the signal of the serving cell received by the first user is stronger than the selected first type of coordinated cell, but the difference of the signal strength is within a certain threshold.
利用第一类协作 d、区进行联合信号发送,可以为第一用户带来信 号合并增益。具有第一类协作小区的用户可以是服务小区的小区边缘 用户, 所述小区边缘用户可以根据用户到基站的距离来判断, 或者根 据半径比所在位置对应的信道衰落来判断。 By using the first type of cooperation d, the area for joint signal transmission, the signal combining gain can be brought to the first user. The user having the first type of coordinated cell may be a cell edge user of the serving cell, and the cell edge user may judge according to the distance from the user to the base station, or according to the channel fading corresponding to the radius corresponding to the location.
所述第二类协作小区可以根据服务小区与邻区交互用户标识信 息、已确定的邻区用户的协作集以及邻区用户的无线资源块信息等调 度信息以及邻区信道信息来确定。 The second type of coordinated cell may be determined according to the scheduling information of the serving cell and the neighboring cell, the coordinated set of the determined neighboring users, and the radio resource block information of the neighboring cell, and the neighboring channel information.
如果所述第一用户与邻区某一用户具有相同的 RB , 且该邻区用 户的协作小区是第一用户所在的服务小区,则第一用户可以将该邻区 视为其第二类协作小区。拥有第二类协作小区的第一用户可以是服务 小区内的任意用户, 不限定为小区边缘用户。 If the first user has the same RB as a user in the neighboring cell, and the coordinated cell of the neighboring user is the serving cell where the first user is located, the first user may consider the neighboring cell as the second type of collaboration. Community. The first user having the second type of coordinated cell may be any user in the service cell, and is not limited to the cell edge user.
采用上述方式为第一用户选择第二类协作小区,可以为作为非小 区边缘用户的第一用户配置协作小区,扩展了非小区边缘用户的协作 集的范围,所述第二类协作小区可以将非小区边缘用户向服务小区发 送信号时产生的干扰转换为可用信号, 与服务小区进行协作通信, 抑 制了邻区干扰, 提升非小区边缘用户的 SINR, 增加了可用于配对的 用户的范围, 提高了配对的成功率, 进一步的, 通过具有协作小区的
用户间的配对, 能够获得更大的配对增益, 增加系统吞吐量。 The second type of coordinated cell is selected for the first user in the foregoing manner, and the coordinated cell of the non-cell edge user may be extended for the first user that is the non-cell edge user, and the second type of coordinated cell may be used. The interference generated when the non-cell edge user sends a signal to the serving cell is converted into an available signal, and cooperative communication with the serving cell suppresses the neighboring cell interference, improves the SINR of the non-cell edge user, increases the range of users available for pairing, and improves The success rate of the pairing, further, through the coordinated cell Pairing between users enables greater pairing gain and increased system throughput.
可选的, 为了保证小区总吞吐量质量, 可以预先规定小区内用户 协作小区的上限,因此,在第一用户的协作小区受数量限制的情况下, 首先考虑搜索第一类协作小区。 Optionally, in order to ensure the total throughput quality of the cell, an upper limit of the user coordinated cell in the cell may be pre-defined. Therefore, when the coordinated cell of the first user is limited by the number, the first type of coordinated cell is first considered.
可选的,所述第一用户可以具有第一类协作小区或第二类协作小 区, 或者同时具有第一类协作小区和第二类协作小区。 Optionally, the first user may have a first type of coordinated cell or a second type of coordinated cell, or both a first type of coordinated cell and a second type of coordinated cell.
S205:所述基站在所述未调度用户集合中选择至少一个用户作为 第二用户。 S205: The base station selects at least one user as the second user in the unscheduled user set.
所述第二用户的具体选取方法可参照图 2所示实施例中的相关说 明, 在此不做贅述。 For the specific selection method of the second user, reference may be made to the related description in the embodiment shown in FIG. 2, and details are not described herein.
S206: 所述基站确定第二用户的第二协作集, 所述第二协作集中 包括第二用户的服务小区及协作小区。 S206: The base station determines a second cooperation set of the second user, where the second cooperation set includes a serving cell and a coordinated cell of the second user.
由于第二用户为未调度用户, 不存在邻区调度信息的交互, 只具 有第一类协作小区。 因此, 所述第二用户的协作小区的确定方法与所 述第一用户的第一类协作小区相同, 在此不再予以贅述。 Since the second user is an unscheduled user, there is no interaction of the neighboring area scheduling information, and only the first type of coordinated cell is present. Therefore, the method for determining the coordinated cell of the second user is the same as the first type of the coordinated cell of the first user, and details are not described herein.
可选的, 上述步骤 203-206可以同时进行, 或按其他顺序执行, 不做特别限定。特别是对第一协作集与第二协作集的确定, 可以是在 选择了第一用户或第二用户之后完成,也可以是在选择第一用户或第 二用户之前就已经为已调度用户集合或未调度用户集合中的所有用 户预先配置, 本发明对此不做任何限定。 Optionally, the foregoing steps 203-206 may be performed simultaneously, or in other orders, without particular limitation. In particular, the determining of the first collaboration set and the second collaboration set may be performed after the first user or the second user is selected, or may be the scheduled user collection before selecting the first user or the second user. All users in the unscheduled user set are pre-configured, and the present invention does not limit this.
S207:选取所述第一协作集与所述第二协作集的并集作为所述第 一用户及第二用户共有的协作集。
所述协作集的并集的选取方式在图 2所示实施例中已有说明, 在 此不再赘述。 S207: Select a union of the first collaboration set and the second collaboration set as a collaboration set shared by the first user and the second user. The manner of selecting the union of the collaboration set is described in the embodiment shown in FIG. 2, and details are not described herein again.
S208:获得第一用户及第二用户在共有的协作集中对应的信道信 息, 计算所述第一用户及第二用户的后处理 SINR ( Post-Processing SINR ) 。 S208: Obtain channel information corresponding to the first user and the second user in the shared cooperation set, and calculate a post-processing SINR of the first user and the second user.
所述后处理 SINR表示经过基站或其他控制设备对用户发送信号 进行检测、 噪声均衡等操作, 得到信号处理增益后计算的用户 SINR, 与处理前 SINR对应。 The post-processing SINR represents a user SINR calculated by the base station or other control device for detecting a signal sent by the user, and performing noise equalization, etc., and obtaining a signal processing gain, corresponding to the pre-processing SINR.
后处理 SINR是标志吞吐量的最重要的指标, 与信道质量、 系统 容量、频谱效率等系统性能参数都存在映射关系, 可以体现系统吞吐 量的变化, 即可以体现配对后的用户性能增益。 因此, 可以后处理 SINR可以作为判断第一用户是否可以与第一配对用户成功配对的评 价指标。 用户的 SINR越高, 说明受到的干扰越小, 系统吞吐量越高, 配对效果越好。 Post-processing SINR is the most important indicator of the flag throughput. It has a mapping relationship with system performance parameters such as channel quality, system capacity, and spectrum efficiency. It can reflect the change in system throughput, which can reflect the user performance gain after pairing. Therefore, the post-processing SINR can be used as an evaluation index for judging whether the first user can successfully pair with the first pairing user. The higher the user's SINR, the smaller the interference, the higher the system throughput, and the better the pairing effect.
可选的, 可以利用所述共有的协作集内的信道信息, 计算得到所 述第一用户的后处理 SINR, 称为第一 SINR。 也可以利用所述共有的 协作集内的信道信息, 获取所述第二用户的后处理 SINR, 称为第二 SINR。 所述信道信息包括, 第一用户及第二用户的协作集并集内的 多天线干扰噪声自相关矩阵(Ruu )及相应的信道传输矩阵11。 Optionally, the post-processing SINR of the first user, which is referred to as a first SINR, may be calculated by using channel information in the shared cooperation set. The post-processing SINR of the second user, which is called the second SINR, may also be obtained by using the channel information in the shared cooperation set. The channel information includes a multi-antenna interference noise autocorrelation matrix (Ruu) and a corresponding channel transmission matrix 11 in a union set of the first user and the second user.
比如, 假设用户 0为第一用户, 用户 1为第二用户, 假设用户 0的 协作集为{小区 0、 小区 1、 小区 2}; 用户 1的协作集为 {小区 0, 小区 2} , 则用户 0与用户 1的协作集并集为{小区 0, 小区 1和小区 2} , 每个小区
所属的基站的接收天线数为 2, 如果用户 0和用户 1配对成功后, 则可 用于接收用户 0及用户 1发送的信号的接收天线数为 6, 分别为天线 1 天线 2, ... ...天线 6, For example, suppose that user 0 is the first user and user 1 is the second user, assuming that the cooperation set of user 0 is {cell 0, cell 1, cell 2}; if the cooperation set of user 1 is {cell 0, cell 2}, then The cooperation set of user 0 and user 1 is a union of {cell 0, cell 1 and cell 2}, each cell The number of receiving antennas of the associated base station is 2. If the user 0 and the user 1 are successfully paired, the number of receiving antennas that can be used to receive the signals sent by the user 0 and the user 1 is 6, respectively, antenna 1 antenna 2, .... .. antenna 6,
则在协作集并集的范围内, 用户 0及用户 1的信道矩阵扩展为: Then, within the scope of the union of the cooperation set, the channel matrix of user 0 and user 1 is expanded to:
式(1 ) 中, h。表示用户 0的信道向量, 1^表示用户 1的信道向量, h01 , h。2... ... h。6表示在协作的三个小区内第 1-6个天线对应的信道中用 户 0的信道冲激响应, hu , h12... ... h16表示在协作的三个小区内第 1-6 个天线对应的信道中用户 1的信道冲激响应。 Ruu为干扰和噪声的混 合信号 u的自相关矩阵, 该自相关矩阵由才艮据协作小区中第 1-6个天线 接收到的干扰和噪声的混合干扰信号组成的干扰信号矩阵 u所生成的 矩阵。 In the formula (1), h. Indicates the channel vector of user 0, 1^ represents the channel vector of user 1, h 01 , h. 2 ... h. 6 denotes a channel impulse response of user 0 in the channel corresponding to the 1-6th antenna in the coordinated three cells, h u , h 12 ... h 16 denotes the first in the three coordinated cells The channel impulse response of User 1 in the channel corresponding to -6 antennas. Ruu is an autocorrelation matrix of the mixed signal u of interference and noise generated by the interference signal matrix u composed of the mixed interference signals of interference and noise received by the 1-6th antenna in the coordinated cell. matrix.
将扩展后的信道矩阵用于计算第一用户与第二用户在配对后各 自的后处理 SINR,可以采用现有技术中的各种后处理 SINR计算方式, 在此不再赘述。 The extended channel matrix is used to calculate the post-processing SINR of the first user and the second user after the pairing, and various post-processing SINR calculation modes in the prior art can be used, and details are not described herein.
在另一个实施例中, 也可以不采用协作集并集的形式, 同样^殳 用户 0的协作集为 {小区 0、 小区 1、 小区 2} ; 用户 1的协作集为 {小区 0, 小区 2} , 贝' j
+ R, 式 ( 2 ) hiIn another embodiment, the cooperative set is not in the form of a union, and the cooperation set of the user 0 is {cell 0, cell 1, cell 2}; the cooperation set of the user 1 is {cell 0, cell 2 } , 贝' j + R, formula ( 2 ) hi
可选的, 用户 0及用户 1的 SINR计算还可以有如下方式, (1 ) 利 用用户 0协作集内的信道矩阵和对应 Ruu 、 利用用户 1的服务小区的 信道矩阵和对应的 Ruu, 分别计算用户 0及用户 1的 SINR; ( 2 )利用用 户 0的服务小区的信道矩阵和对应的 Ruu、 利用用户 1协作集内的信道 矩阵和对应的 RUU, 分别计算用户 0及用户 1的 SINR; ( 3 )用户 0及用 户 1都利用服务小区的信道矩阵和对应的 Ruu, 进行 SINR计算。 不同 的计算方式, 其复杂程度不同, 性能效果也有差别, 可以根据网络实 际情况选择合适的方式。 Optionally, the SINR calculations of the user 0 and the user 1 may also be performed as follows: (1) using the channel matrix and the corresponding Ruu in the cooperation set of the user 0, using the channel matrix of the serving cell of the user 1 and the corresponding Ruu, respectively calculating The SINR of user 0 and user 1; (2) calculating the SINR of user 0 and user 1 by using the channel matrix of the serving cell of user 0 and the corresponding Ruu, using the channel matrix in the cooperation set of user 1 and the corresponding R UU ; (3) Both user 0 and user 1 perform SINR calculation using the channel matrix of the serving cell and the corresponding Ruu. Different calculation methods have different degrees of complexity and performance effects. You can choose the appropriate method according to the actual situation of the network.
S209. 基于 S208中计算得到的所述第一 SINR及第二 SINR, 判断 待配对的第一用户及第二用户是否配对成功。 S209. Determine, according to the first SINR and the second SINR calculated in S208, whether the first user and the second user to be paired are successfully paired.
可选的, 可以通过 SINR映射的信道质量及频谱效率来判断第一 用户及第二用户能否配对成功, 包括, 计算得到第一 SINR计算得到 第一用户的第一信道质量指示 ( CQI , Channel Quality Indicator )值; 由第二 SINR计算得到第二用户的第二 CQI值, 判断所述第一 CQI值与 第二 CQI值是否达到一定门限, 若达到一定门限, 根据所述第一 CQI 值及第二 CQI值继续评估第一用户及第二用户配对后的性能增益, 即 评估两个用户配对后,各自的频谱效率的提升量△是否也达到一定门 限, 才予以配对。 上述 CQI的门限和提升量 Δ的门限都可以根据经验
或实验确定或根据网络实际运行情况确定。 所述第一 CQI或第二 CQI可以由第一 SINR或第二 SINR映射得到; 所述频谱效率可以由所述第一 SINR或第二 SINR与调制方式的映射关 系予以确定, 在相关协议中均有说明, 在此不再贅述。 用户的 SINR越高, 说明信道质量越好, 因而容易达到配对所需 的信道质量门限要求, 同时, 配对后 V-MIMO用户对可以在空间维度 对同一时频资源进行复用, 可以使得配对用户的吞吐量都出现增长, 频谱利用率提升, 体现了配对增益, 配对成功。 反之, 用户的 SINR 越低, 达不到配对所需的信道质量门限, 或配对后受限于信道条件, 难以获得更多的调度资源,评估用户配对后反而会导致频谱效率或吞 吐量下降, 不能予以配对。 可选的, 也可以通过 SINR计算得到用户发射功率来表征配对后 的用户性能增益, 从而判断第一用户及第二用户能否配对成功。 具体 Optionally, the channel quality and the spectrum efficiency of the SINR mapping may be used to determine whether the first user and the second user can be successfully paired, and the first channel quality indicator of the first user is calculated by calculating the first SINR (CQI, Channel). a value of the second CQI calculated by the second SINR, determining whether the first CQI value and the second CQI value reach a certain threshold, and if a certain threshold is reached, according to the first CQI value and The second CQI value continues to evaluate the performance gain of the first user and the second user after pairing, that is, after the two users are paired, whether the respective spectral efficiency improvement amount Δ also reaches a certain threshold is matched. The threshold of the above CQI and the threshold of the lifting amount Δ can be based on experience. Or experimentally determined or determined based on the actual operation of the network. The first CQI or the second CQI may be obtained by mapping the first SINR or the second SINR; the spectrum efficiency may be determined by a mapping relationship between the first SINR or the second SINR and a modulation mode, where There are instructions, and will not be repeated here. The higher the SINR of the user, the better the channel quality, so it is easy to achieve the channel quality threshold required for pairing. At the same time, the paired V-MIMO user pair can reuse the same time-frequency resource in the spatial dimension, which can make the paired user The throughput has increased, the spectrum utilization has increased, the pairing gain has been achieved, and the pairing has been successful. Conversely, the lower the SINR of the user, the lower the channel quality threshold required for pairing, or the channel condition after pairing, it is difficult to obtain more scheduling resources, and the evaluation of user pairing may lead to spectrum efficiency or throughput degradation. Cannot be paired. Optionally, the user transmit power can also be calculated by using the SINR to represent the user performance gain after the pairing, so as to determine whether the first user and the second user can be successfully paired. specific
+ 。 + .
的, 可以根据公式 r^ 式(3 )计算得到第一用 户及第二用户在配对后的发射功率增量。 其中 , 为第一用户在 t时刻进行 V-MIMO配对的发射功率 为 PVMMO'A对应的发送数据速率, 为第二用户在 t 时刻进行 V-MIMO配对的发射功率为 PvMM0'B对应的发送数据速率 , ^0)为第一 用户在 t 时刻进行单天线输入输出的发射功率为 P^。 对应的发送数 据速率, W为第一用户在 时间段内的平均发送数据速率, (0为 第二用户在 时间段内的平均发送数据速率。 其中, t时刻的发送数据速率的获得过程为: 由用户设备 t时刻
的发射功率通过计算得到 SINR,再根据 SINR的计算值查找 SINR与 频谱效率的映射表可以获得频谱效率,将该频谱效率与该用户设备获 得的 RB数相乘, 即得发射功率对应下的发送数据速率。 SINR越大, 频谱效率越高, 相应的发送数据速率也越大, 根据公式(3 )计算得 到的发射功率增量也越大, 配对效果越好。如果所述发射功率增量达 到一定门限, 则可以认为第一用户及第二用户能够配对成功, 准予配 对。 The transmit power increment of the first user and the second user after pairing can be calculated according to the formula r ^ equation (3). The transmit power corresponding to the V-MIMO pairing of the first user at time t is the transmission data rate corresponding to PVMMO'A, and the transmit power corresponding to the V-MIMO pairing of the second user at time t is the transmission data corresponding to PvMM0 ' B. The rate, ^0) is the first user's single antenna input and output transmit power at time t is P ^. Corresponding transmission data rate, W is the average transmission data rate of the first user in the time period, (0 is the average transmission data rate of the second user in the time period. The obtaining process of the transmission data rate at time t is: By user equipment t time The transmit power is calculated by the SINR, and the SINR and the spectral efficiency mapping table are searched according to the calculated value of the SINR to obtain the spectral efficiency, and the spectral efficiency is multiplied by the number of RBs obtained by the user equipment, that is, the transmission corresponding to the transmit power is obtained. Data rate. The larger the SINR, the higher the spectrum efficiency, and the larger the corresponding transmission data rate. The larger the transmission power increment calculated according to formula (3), the better the pairing effect. If the transmit power increment reaches a certain threshold, the first user and the second user can be considered to be successfully paired, and the pairing is permitted.
此外, 还可以采用现有的各种配对性能评价方式, 包括吞吐量最 大化准则、 公平性准则等, 本发明实施例对此不做特别限定。 In addition, the existing various matching performance evaluation methods, including the throughput optimization criterion, the fairness criterion, and the like, may be used, and the embodiment of the present invention does not specifically limit this.
采用现有的各种评价方式,若能够达到系统对配对后性能增益的 要求, 表示第一用户与第二用户配对成功, 进行步骤 S2010。 The existing evaluation method is adopted, and if the performance requirement of the system after pairing is achieved, it indicates that the first user and the second user are successfully paired, and step S2010 is performed.
S2010: 分别将第一用户从已调度用户集合中删除, 将第二用户 从未调度用户集合中删除, 结束本次配对过程, 返回步骤 203 , 在所 述已调度用户集合及未调度用户集合中各自重新选择一个用户进行 配对尝试。 S2010: deleting the first user from the scheduled user set, deleting the second user from the unscheduled user set, ending the pairing process, and returning to step 203, in the scheduled user set and the unscheduled user set. Each user is re-selected for a pairing attempt.
若未能达到系统对配对后性能增益的要求,表示第一用户与第二 用户配对失败, 则返回步骤 205, 在未调度用户集合中重新选择至少 一个用户与第一用户进行配对尝试, 直到配对成功, 或者遍历所述未 调度用户集合, 没有用户能够与第一用户配对成功, 则结束配对。 If the system fails to meet the performance requirement after pairing, indicating that the first user fails to pair with the second user, the process returns to step 205, and at least one user is reselected in the unscheduled user set to perform a pairing attempt with the first user until the pairing is performed. Successfully, or traversing the unscheduled user set, no user can successfully pair with the first user, then end the pairing.
可选的, 本发明实施例还可以包括, S2011 : 完成第一用户及第 二用户的配对后, 对第一用户及第二用户的协作集进行更新。 Optionally, the embodiment of the present invention may further include: S2011: After completing pairing of the first user and the second user, updating the collaboration set of the first user and the second user.
考虑到用户的移动性, 用户的服务小区会发生变化,相应的协作
小区也会改变, 因此,对于配对成功的第一用户可以按照 S204重新选 择协作小区,得到新的第一协作集; 对于第二用户可以按照 S206重新 选择协作小区,得到新的第二协作集, 将新的第一协作集与新的第二 协作集取并集, 更新第一用户及第二用户共有的协作集, 可以根据用 户移动状况, 调整配对策略, 提升配对性能。 Considering the mobility of the user, the user's service cell will change, and the corresponding collaboration The cell may also be changed. Therefore, the first user who successfully pairs may reselect the coordinated cell according to S204 to obtain a new first cooperation set. For the second user, the second user may reselect the coordinated cell according to S206 to obtain a new second collaboration set. The new first collaboration set is merged with the new second collaboration set, and the collaboration set shared by the first user and the second user is updated, and the pairing policy can be adjusted according to the user's movement condition to improve the pairing performance.
采用本发明实施例提供的用户调度方法,确定小区中的待配对用 户集合, 并选取待配对用户的协作集并集作为共有的协作集, 比如为 作为非小区边缘用户的待配对用户配置协作小区,进一步扩展了待配 对用户的协作集范围, 使得待配对用户可以获得较高的 SINR增益, 从而可以有更好的机会选择最合适的待配对用户进行配对,提升了配 对的成功概率, 可以获得更高的配对增益, 达到减少小区间干扰、 提 高系统吞吐量、 提高用户数据传输速率的目的。 The user scheduling method provided by the embodiment of the present invention determines a set of users to be paired in a cell, and selects a union set of the users to be paired as a shared collaboration set, for example, configuring a coordinated cell for the to-be paired user as a non-cell edge user. Further expanding the scope of the collaboration set of the users to be paired, so that the users to be paired can obtain a higher SINR gain, so that there is a better chance of selecting the most suitable paired users to be paired, thereby improving the probability of success of the pairing. Higher pairing gain, which achieves the goal of reducing inter-cell interference, increasing system throughput, and increasing user data transmission rate.
可选的, 可参考前述实施例, 在本发明的另一个实施例中, 可以 利用所述第一用户的服务小区内的信道信息,计算所述第一用户的服 务小区的 SINR, 利用所述第一用户在所述共有的协作集中获得的 SINR增益对所述第一用户的服务小区的 SINR进行修正, 得到所述第 —SINR; 以及, 利用所述第二用户的服务小区内的信道信息, 计算 所述第二用户的服务小区的 SINR, 利用所述第二用户在所述共有的 协作集中获得的 SINR增益对所述第二服务小区的 SINR进行修正, 得 到所述第二 SINR。 Optionally, referring to the foregoing embodiment, in another embodiment of the present invention, the SINR of the serving cell of the first user may be calculated by using channel information in a serving cell of the first user, by using the Correcting, by the SINR gain obtained by the first user in the shared cooperation set, the SINR of the serving cell of the first user, to obtain the first SINR; and using channel information in the serving cell of the second user Calculating an SINR of the serving cell of the second user, and correcting an SINR of the second serving cell by using an SINR gain obtained by the second user in the shared cooperation set, to obtain the second SINR.
可选的, 在本实施例中, 第一用户在协作集内的后处理 SINR为 SINR1 , 及没有协作集状态下, 在服务小区内的 SINR为 SINR2, SINR
增益 =SINR2-SINR1 (单位: db )。 按同样计算方式, 可以获取第二用 户的 SINR增益。 利用所述 SINR增益可以对第一用户或第二用户仅服 务小区内的后处理 SINR进行修正, 修正后的后处理 SINR可以用于映 射到频谱效率或发射功率, 计算配对后的性能增益, 具体的映射及计 算方式在其他实施例中已有说明, 在此不做赞述。 Optionally, in this embodiment, the SINR of the first user in the cooperation set is SINR1, and the SINR in the serving cell is SINR2, SINR. Gain = SINR2-SINR1 (unit: db). In the same calculation manner, the SINR gain of the second user can be obtained. The SINR gain may be used to modify the post-processing SINR in the serving cell of the first user or the second user, and the modified post-processing SINR may be used to map to the spectrum efficiency or the transmit power, and calculate the performance gain after the pairing. The mapping and calculation methods have been described in other embodiments, and are not mentioned here.
一种修正方式可以是: A correction can be:
SINR_l_pair = SINR_l_pair '+ SINR_compgain_l SINR_l_pair = SINR_l_pair '+ SINR_compgain_l
SINR_2_pair = SINR_2_pair '+ SINR_compgain_2 SINR_2_pair = SINR_2_pair '+ SINR_compgain_2
其中 SINR— compgain— 1和 SINR— compgain— 2表示第一配对用户 和第一候选配对用户在协作集并集中获得的 SINR增益; SINR— l_pair 和 SINR— 2_pair表示配对过程中经修正的第一配对用户和第一候选配 对用户的后处理 SINR; SINR— l_pair,和 SINR— 2_pair,表示中第一配 对用户和第一候选配对用户的服务小区内的后处理 SINR。 Wherein SINR_compgain-1 and SINR_compgain-2 indicate the SINR gain obtained by the first paired user and the first candidate paired user in the cooperative set and concentrated; SINR_l_pair and SINR-2_pair indicate the corrected first pairing in the pairing process The post-processing SINR of the user and the first candidate paired user; SINR_l_pair, and SINR_2_pair, indicating the post-processing SINR in the serving cell of the first paired user and the first candidate paired user.
可选的, 在配对过程中不考虑 SINR增益, 配对成功之后, 再对 配对用户的后处理 SINR进行修正, 可用于选择优化的 MCS, 提升 V-MIMO用户对与基站间数据传输的性能。 Optionally, the SINR gain is not considered in the pairing process. After the pairing is successful, the post-processing SINR of the paired user is corrected, which can be used to select an optimized MCS, and improve the performance of data transmission between the V-MIMO user pair and the base station.
具体的, SINR— l_pair = SINR_l_pair' + 0 Specifically, SINR_l_pair = SINR_l_pair' + 0
SINR_2_pair = SINR— 2_pair, + 0 SINR_2_pair = SINR — 2_pair, + 0
SINR— 1— mcs = SINR— 1— mcs, + SINR— compgain— 1 SINR—1— mcs = SINR— 1— mcs, + SINR—compgain— 1
SINR— 2— mcs = SINR— 2— mcs '+ SINR— compgain— 2 SINR—2— mcs = SINR— 2— mcs '+ SINR—compgain— 2
其中, SINR— 1— mcs'和 SINR— 2— mcs'表示配对成功后配对用户 1 和配对用户 2的后处理 SINR, SINR— 1— mcs和 SINR— 2— mcs表示经修
正的配对成功后的后处理 SINR, 其他参数含义如上所述, 由于在配 对过程中不考虑 SINR增益,因此 SINR— l_pair等价于 SINR— 1— mcs,; SINR— 2_pair等价于 SINR— 2— mcs,。 Among them, SINR-1-mcs' and SINR-2-mcs' indicate the post-processing SINR of paired user 1 and paired user 2 after successful pairing, SINR-1-mcs and SINR-2-mcs indicate repair The post-processing SINR after positive pairing is successful. The other parameters are as described above. Since the SINR gain is not considered in the pairing process, SINR_l_pair is equivalent to SINR-1-mcs, and SINR-2_pair is equivalent to SINR-2. — mcs,.
为保证已调度用户的协作性能, 在计算协作集并集时, 可以以已 调度用户为主, 考虑系统实际处理能力, 如果当后处理 SINR的修正 会影响系统性能, 对后处理 SINR的修正可以以已调度用户为主: 例如, SINR_l_pair = SINR_l_pair + SINR_compgain_l To ensure the cooperative performance of the scheduled users, when calculating the union of the cooperative sets, the scheduled users can be mainly considered, and the actual processing capability of the system can be considered. If the correction of the SINR is affected by the system, the correction of the post-processing SINR can be Mainly scheduled users: For example, SINR_l_pair = SINR_l_pair + SINR_compgain_l
SINR— 1— mcs = SINR— 2— mcs + SINR— compgain— 1 SINR — 1 — mcs = SINR — 2 — mcs + SINR — compgain — 1
在另一个实施例中, 还可以利用所述共有的协作集内的信道信 息, 计算所述第一配对用户的第一 SINR; 利用所述候选配对用户的 服务小区内的信道信息, 确定所述候选配对用户的第二 SINR。 In another embodiment, the first SINR of the first paired user may be calculated by using the channel information in the shared cooperation set; and the channel information in the serving cell of the candidate pairing user is used to determine the The second SINR of the candidate paired user.
在另一个实施例中,还可以利用所述第一用户的服务小区内的信 道信息, 计算所述第一用户的第一 SINR; 利用所述协作集并集内的 信道信息, 计算所述第二用户的第二 SINR。 In another embodiment, the first SINR of the first user may be calculated by using channel information in the serving cell of the first user, and the channel information is calculated by using the channel information in the cooperation set. The second SINR of the two users.
可选的, 在本实施例中, 采用了间接考虑小区协作对 V-MIMO配 对的增益, 不需要基站物理层上报共有的协作集内的 H和 Ruu, 基站 物理层也不需要计算第一用户及第二用户共有的协作集内的 SINR, 测量量小, 计算复杂度小。 进一步的, 通过不同的计算方式获得待配 对用户的 SINR并用于配对后性能增益评价, 能够适用运算处理能力 不同的系统, 提升了配对流程的效率及准确度。 Optionally, in this embodiment, the gain of the V-MIMO pairing by the cell cooperation is indirectly considered, and the H and Ruu in the shared set of the shared layer are not required to be reported by the physical layer of the base station, and the physical layer of the base station does not need to calculate the first user. The SINR in the collaboration set shared by the second user is small in measurement amount and small in computational complexity. Further, the SINR of the user to be matched is obtained by different calculation methods and used for performance gain evaluation after pairing, and the system with different computing processing capability can be applied, and the efficiency and accuracy of the pairing process are improved.
本发明实施例还提供了一种基站, 如图 4所示, 所述基站可以是 LTE通信系统中的演进型节点 e-NodeB或者 LTE后续演进系统中的类
似设备,所述基站及其内部模块的功能,可实施前述方法实施例步骤。 所述基站可以包括, 用户选择单元 401 , 协作集确定单元 402, 控 制单元 403 , 各单元之间可以通过通信总线的方式相互连接。 The embodiment of the present invention further provides a base station. As shown in FIG. 4, the base station may be an evolved node e-NodeB in an LTE communication system or a class in an LTE subsequent evolution system. Like the functions of the device, the base station and its internal modules, the steps of the foregoing method embodiments may be implemented. The base station may include a user selection unit 401, a cooperation set determining unit 402, and a control unit 403, and each unit may be connected to each other by means of a communication bus.
所述用户选择单元 401 , 被配置成用于选择已进行数据传输调度 的第一用户, 以及用于选择未进行数据传输调度的第二用户。 The user selection unit 401 is configured to select a first user who has performed data transmission scheduling, and to select a second user that has not performed data transmission scheduling.
对第一用户的选择方法可以是现有技术中的各类方法,例如轮询 选择, 随机选择, 比例公平选择等, 本发明实施例中对此不做特别限 定。 对第二配对用户选择方法也可以是现有技术中的各类方法, 例如 随机选择、 比例公平选择、 正交选择等, 本发明实施例中对此也不做 特别限定。 The selection method for the first user may be various methods in the prior art, such as polling selection, random selection, proportional fair selection, etc., which are not specifically limited in the embodiment of the present invention. The second pair of user selection methods may also be various methods in the prior art, such as random selection, proportional fair selection, orthogonal selection, etc., which are not particularly limited in the embodiment of the present invention.
所述协作集确定单元 402, 被配置成用于将所述第一用户的服务 小区及协作小区作为所述第一用户的第一协作集;以及用于将所述第 二用户的服务小区及协作小区作为所述第二用户的第二协作集。 The cooperation set determining unit 402 is configured to use the serving cell and the coordinated cell of the first user as the first collaboration set of the first user, and to serve the serving cell of the second user and The coordinated cell serves as a second collaboration set of the second user.
可选的, 所述协作集确定单元 402可以具体用于: 被配置成确定 所述第一用户的协作小区,所述协作小区包括所述第一用户的第一类 协作小区与第二类协作小区;或者所述第一用户的协作小区为第二类 协作小区。 Optionally, the collaboration set determining unit 402 may be specifically configured to: configure a coordinated cell of the first user, where the coordinated cell includes a first type of coordinated cell of the first user and a second type of collaboration a cell; or the coordinated cell of the first user is a second type of coordinated cell.
所述第一类协作小区包括所述第一用户的服务小区的邻区,所述 第一用户的服务小区的邻区的 RSRP与所述第一用户在服务小区的 RSRP的差值处于预设的门限值范围内。 The first type of coordinated cell includes a neighboring cell of the serving cell of the first user, and the difference between the RSRP of the neighboring cell of the serving cell of the first user and the RSRP of the first user in the serving cell is preset. Within the limits of the threshold.
所述第二类协作小区包括所述第一用户的服务小区的邻区,所述 第一用户的服务小区的邻区包含与所述第一用户具有相同 RB的用
户,且所述第一用户的服务小区的邻区中的与所述第一用户具有相同 资源块的用户的协作小区是所述第一用户的服务小区。 The second type of coordinated cell includes a neighboring cell of the serving cell of the first user, and the neighboring cell of the serving cell of the first user includes the same RB as the first user. And the coordinated cell of the user having the same resource block as the first user in the neighboring cell of the first user's serving cell is the serving cell of the first user.
所述第二类协作小区可以根据服务小区与邻区交互用户标识信 息、 已确定的邻区用户的协作集信息以及邻区用户的 RB信息等调度 信息以及邻区信道信息来确定。 The second type of coordinated cell may be determined according to the scheduling information of the serving cell and the neighboring cell interaction user identification information, the determined cooperation group information of the neighboring cell user, and the RB information of the neighboring cell user, and the neighboring cell channel information.
利用第一类协作小区进行联合信号发送,可以为第一用户带来信 号合并增益。具有第一类协作小区的用户可以是服务小区的小区边缘 用户, 所述小区边缘用户可以根据用户到基站的距离来判断, 或者根 据半径比所在位置对应的信道衰落来判断。 The joint signal transmission using the first type of coordinated cell can bring the signal combining gain to the first user. The user having the first type of coordinated cell may be a cell edge user of the serving cell, and the cell edge user may judge according to the distance from the user to the base station, or according to the channel fading corresponding to the radius corresponding to the location.
确定第二类协作小区,可以为属于非小区边缘用户的第一用户配 置协作小区, 扩展了非小区边缘用户的协作集的范围, 所述第二类协 作小区可以将非小区边缘用户向服务小区发送信号时产生的干扰转 换为可用信号, 与服务小区进行协作通信, 抑制了邻区干扰, 提升非 小区边缘用户的 SINR, 增加了可用于配对的用户的范围, 提高了配 对的成功率, 进一步的, 通过具有协作小区的用户间的配对, 能够获 得更大的配对增益, 增加系统吞吐量。 Determining the second type of coordinated cell, the cooperative cell may be configured for the first user belonging to the non-cell edge user, and the scope of the cooperation set of the non-cell edge user may be extended, and the second type of coordinated cell may send the non-cell edge user to the serving cell The interference generated when the signal is transmitted is converted into an available signal, and cooperative communication with the serving cell suppresses the neighboring cell interference, improves the SINR of the non-cell edge user, increases the range of users that can be used for pairing, and improves the success rate of the pairing, further By pairing between users with coordinated cells, a larger pairing gain can be obtained, increasing system throughput.
可选的, 所述协作集确定单元 402还可以用于, 为所述第二用户 确定协作小区。 由于所述第二用户为未调度用户, 不存在邻区调度信 息的交互, 只具有第一类协作小区。 因此, 所述第二用户的协作小区 的确定方法与所述第一用户的第一类协作小区相同,在此不再予以贅 述。 Optionally, the collaboration set determining unit 402 is further configured to determine a coordinated cell for the second user. Since the second user is an unscheduled user, there is no interaction of the neighboring area scheduling information, and only the first type of coordinated cell is present. Therefore, the method for determining the coordinated cell of the second user is the same as the first type of coordinated cell of the first user, and is not described herein.
选取所述第一用户或第二用户的协作小区的具体方法可参照本
发明其他实施例中的相关描述, 在此不做赞述。 The specific method for selecting the coordinated cell of the first user or the second user may refer to this The related description in other embodiments of the invention is not described herein.
所述控制单元 403 , 与所述用户选择单元 401相通信, 或者与所述 用户选择单元 401以及协作集确定单元 402相通信,被配置成利用所述 第一协作集与所述第二协作集,对所述第一用户和所述第二用户进行 配对。 The control unit 403, in communication with the user selection unit 401, or in communication with the user selection unit 401 and the collaboration set determination unit 402, configured to utilize the first collaboration set and the second collaboration set Pairing the first user and the second user.
所述配对方式可以是现有技术中的各种方式, 例如, 正交配对算 法、 随机配对算法、 行列式配对算法等, 本发明实施例对此不做特别 限定。 The pairing manner may be various methods in the prior art, for example, an orthogonal pairing algorithm, a random pairing algorithm, a determinant pairing algorithm, and the like, which are not particularly limited in the embodiment of the present invention.
所述控制单元 403可以直接与所述用户选择单元 401通信,获取所 述第一用户及第一用户的第一协作集的信息,以及第二用户及第二用 户的第二协作集的信息; 也可以与所述用户选择单元 401以及协作集 确定单元 402相通信 ,通过所述用户选择单元 401获取第一用户及第二 用户的信息, 通过所述协作集确定单元 402获取第一用户的第一协作 集的信息, 以及第二用户的第二协作集的信息。 The control unit 403 may directly communicate with the user selection unit 401, acquiring information of the first collaboration set of the first user and the first user, and information of the second collaboration set of the second user and the second user; The user selection unit 401 and the cooperation set determining unit 402 may also be in communication with each other, and the information of the first user and the second user is acquired by the user selection unit 401, and the first user is acquired by the collaboration set determining unit 402. The information of a collaboration set, and the information of the second collaboration set of the second user.
本发明实施例所述 "通信"可以是直接通信或间接通信; 也可以 是逻辑通信, 或者是物理连线通信; 也可以是点对点通信, 或者是利 用总线通信, 本发明实施例对此不做任何限定。 The "communication" in the embodiment of the present invention may be direct communication or indirect communication; or may be logical communication or physical connection communication; or may be point-to-point communication, or use bus communication, which is not performed by the embodiment of the present invention. Any restrictions.
可选的, 所述控制单元 403还可以包括共有协作集选取子单元 4031以及配对子单元 4032。 Optionally, the control unit 403 may further include a shared collaboration set selection sub-unit 4031 and a pairing sub-unit 4032.
所述共有协作集选取子单元 4031 ,被配置成用于选取所述第一用 户与第二用户共有的协作集,所述共有的协作集是所述第一协作集与 所述第二协作集的并集。
所述协作集的并集的选取方法可参照本发明前述方法实施例中 的相关内容, 在此不做赞述。 The shared collaboration set selection sub-unit 4031 is configured to select a collaboration set shared by the first user and the second user, where the shared collaboration set is the first collaboration set and the second collaboration set The union of. For the method for selecting the union of the collaboration set, reference may be made to the related content in the foregoing method embodiments of the present invention, which is not described herein.
可选的, 当用户的最大协作集范围受限时, 可以取第一用户的协 作集作为第一用户与第二用户共有的协作集。 Optionally, when the maximum collaboration set range of the user is limited, the collaboration set of the first user may be taken as a collaboration set shared by the first user and the second user.
所述配对子单元 4032, 被配置成用于, 利用所述共有协作集选取 子单元 4031选取的所述第一用户与第二用户共有的协作集,对所述第 一用户与所述第二用户进行配对。 The pairing sub-unit 4032 is configured to use, by the shared collaboration set selection sub-unit 4031, the collaboration set shared by the first user and the second user, for the first user and the second Users are paired.
采用协作集并集作为待配对的第一用户及第二用户共有的协作 集, 扩大了待配对用户的协作集范围, 增加了参与第一用户或第二用 户协作通信的小区数量, 更好地抑制了小区间干扰,提高了无线频谱 利用率, 因此, 在协作集并集内判断用户间的配对, 可以提升配对的 成功率, 配对成功后的 V-MIMO用户对在与基站进行通信时, 也能够 获得更多的信号合并增益以及干扰抑制增益。 The collaboration set is used as the collaboration set shared by the first user and the second user to be paired, which expands the cooperation set range of the users to be paired, and increases the number of cells participating in the first user or the second user collaborative communication, and better The inter-cell interference is suppressed, and the wireless spectrum utilization rate is improved. Therefore, judging the pairing between users in the union of the cooperative sets can improve the success rate of the pairing. When the paired V-MIMO user pair communicates with the base station, It is also possible to obtain more signal combining gain and interference suppression gain.
进一步的, 所述控制单元还可以包括 SINR计算子单元 4033 , 所 述 SINR计算子单元 4033与所述共有协作集选取子单元 4031以及所述 配对子单元 4032相通信。 Further, the control unit may further include an SINR calculation sub-unit 4033, and the SINR calculation sub-unit 4033 is in communication with the shared cooperation set selection sub-unit 4031 and the pairing sub-unit 4032.
所述 SINR计算子单元 4033 , 被配置成用于获得所述第一用户在 所述共有的协作集内的第一 SINR; 以及, 被配置成用于获得所述第 二用户在所述共有的协作集内的第二 SINR。 The SINR calculation sub-unit 4033 is configured to obtain a first SINR of the first user within the shared collaboration set; and configured to obtain the second user at the shared The second SINR within the collaboration set.
所述配对子单元 4032可以进一步被配置成具体用于, 利用所述 SINR计算子单元获得的所述第一用户在所述共有的协作集内的第一 SINR和所述第二用户在所述共有的协作集内的第二 SINR, 判断所述
第一用户可以与所述第二用户配对。 The pairing sub-unit 4032 may be further configured to specifically use, by using the SINR calculation subunit, the first SINR of the first user in the shared collaboration set and the second user in the a second SINR in the shared collaboration set, determining the The first user can be paired with the second user.
具体的, SINR计算子单元 5041根据所述协作集的范围, 获得第 一用户及第二用户在共有的协作集中对应的信道信息,计算所述第一 用户及第二用户的后处理 SINR, 判断待配对的第一用户及第二用户 是否配对成功。 Specifically, the SINR calculation sub-unit 5041 obtains channel information corresponding to the first user and the second user in the shared cooperation set according to the range of the cooperation set, and calculates a post-processing SINR of the first user and the second user, and determines Whether the first user and the second user to be paired are successfully paired.
后处理 SINR是标志吞吐量的最重要的指标, 与信道质量、 系统 容量、频谱效率等系统性能参数都存在映射关系, 可以体现系统吞吐 量的变化, 即可以体现配对后的用户性能增益。 因此, 可以后处理 SINR可以作为判断第一用户是否可以与第一用户成功配对的评价指 标。 用户的 SINR越高, 说明受到的干扰越小, 系统吞吐量越高, 配 对效果越好。 Post-processing SINR is the most important indicator of the flag throughput. It has a mapping relationship with system performance parameters such as channel quality, system capacity, and spectrum efficiency. It can reflect the change in system throughput, which can reflect the user performance gain after pairing. Therefore, the post-processing SINR can be used as an evaluation index for judging whether the first user can successfully pair with the first user. The higher the user's SINR, the smaller the interference, the higher the system throughput, and the better the matching effect.
可选的, 可以通过 SINR映射的信道质量及频谱效率来判断第一 用户及第二用户能否配对成功。 可选的, 也可以通过 SINR计算得到 用户发射功率来表征配对后的用户性能增益,从而判断第一用户及第 二用户能否配对成功。具体的判断过程可以参照前述方法实施例中的 相关内容, 在此不做贅述。 Optionally, the channel quality and spectrum efficiency of the SINR mapping can be used to determine whether the first user and the second user can be successfully paired. Optionally, the user transmit power can also be calculated by using the SINR to represent the user performance gain after the pairing, so as to determine whether the first user and the second user can be successfully paired. For the specific judgment process, reference may be made to related content in the foregoing method embodiments, and details are not described herein.
此外, 还可以采用现有的各种配对性能评价方式, 包括吞吐量最 大化准则、 公平性准则等, 本发明实施例对此不做特别限定。 In addition, the existing various matching performance evaluation methods, including the throughput optimization criterion, the fairness criterion, and the like, may be used, and the embodiment of the present invention does not specifically limit this.
采用现有的各种评价方式,若能够达到系统对配对后性能增益的 要求, 表示第一用户与第二用户配对成功, 结束本次配对过程, 所述 配对子单元 4032可以发送消息给用户选择单元 401 , 在所述已调度 用户集合及未调度用户集合中各自重新选择一个用户进行配对尝试;
所述若未能达到系统对配对后性能增益的要求,表示第一用户与第二 用户配对失败, 所述配对子单元 4032可以发送消息给用户选择单元 401 , 在未调度用户集合中重新选择一个用户与第一用户进行配对尝 试, 直到配对成功, 或者遍历所述未调度用户集合, 没有用户能够与 第一用户配对成功, 则结束配对。 The existing matching method can be used to determine the performance gain of the system after the pairing, indicating that the first user and the second user are successfully paired, and the pairing process is ended. The pairing subunit 4032 can send a message to the user to select. Unit 401, reselecting one user in the scheduled user set and the unscheduled user set to perform a pairing attempt; If the system fails to meet the performance requirement of the paired performance gain, it indicates that the first user fails to pair with the second user, and the pairing subunit 4032 can send a message to the user selection unit 401 to reselect one of the unscheduled user sets. The user makes a pairing attempt with the first user until the pairing is successful, or traversing the unscheduled user set, and no user can successfully pair with the first user, then the pairing is ended.
可选的, 所述 SINR计算子单元 4033还可以具体用于, 被配置成, 利用所述第一用户的服务小区内的信道信息,获取所述第一用户的服 务小区的 SINR, 利用所述第一用户在所述共有的协作集中获得的 SINR增益对所述第一用户的服务小区的 SINR进行修正, 得到所述第 —SINR; 以及, 被配置成, 利用所述第二用户的服务小区内的信道 信息, 获取所述第二用户的服务小区的 SINR, 利用所述第二用户在 所述共有的协作集中获得的 SINR增益对所述第二服务小区 SINR进行 修正, 得到所述第二 SINR。 Optionally, the SINR calculation sub-unit 4033 is further configured to: obtain, by using channel information in the serving cell of the first user, an SINR of the serving cell of the first user, by using the Correcting, by the first user, the SINR gain obtained in the shared cooperation set, the SINR of the serving cell of the first user, to obtain the first SINR; and configured to use the serving cell of the second user The channel information in the network, the SINR of the serving cell of the second user is obtained, and the SINR of the second serving cell is corrected by using the SINR gain obtained by the second user in the shared cooperation set, to obtain the second SINR.
在本实施例中, 第一用户在协作集内的后处理 SINR为 SINR1 ,及 没有协作集状态下, 在服务小区内的 SINR为 SINR2 , SINR增益 =SINR2-SINR1 (单位: db )。 按同样计算方式, 可以获取第二用户的 SINR增益。 利用所述 SINR增益可以对第一用户或第二用户仅在在服 务小区内的 SINR进行修正, 修正后的后处理 SINR可以用于映射到频 谱效率或发射功率, 计算配对后的性能增益, 具以及修正后的映射及 计算方式在前述方法实施例中已有说明, 在此不做贅述。 In this embodiment, the SINR of the first user in the cooperative set is SINR1, and in the absence of the cooperative set, the SINR in the serving cell is SINR2, and the SINR gain is SINR2-SINR1 (unit: db). According to the same calculation method, the SINR gain of the second user can be obtained. The SINR gain may be used to correct the SINR of the first user or the second user only in the serving cell, and the modified post-processing SINR may be used to map to the spectrum efficiency or the transmit power, and calculate the matched performance gain. The modified mapping and calculation method are described in the foregoing method embodiments, and are not described herein.
可选的, 为保证已调度用户的协作性能, 在计算协作集并集时, 可以以已调度用户为主,考虑系统实际处理能力,如果当后处理 SINR
的修正会影响系统性能, 对后处理 SINR的修正可以以已调度用户为 主。 Optionally, in order to ensure the coordinated performance of the scheduled users, when calculating the union of the collaboration set, the scheduled users may be mainly considered, and the actual processing capability of the system is considered, if the SINR is processed later. The correction will affect the system performance, and the correction of the post-processing SINR can be dominated by the scheduled users.
在另一个实施例中, 所述 SINR确定子单元 5041还可以进一步用 于, 利用所述共有的协作集内的信道信息, 计算所述第一用户的第一 SINR; 利用所述第二用户的服务小区内的信道信息, 确定所述第二 用户的第二 SINR。 In another embodiment, the SINR determining subunit 5041 is further configured to: calculate, by using channel information in the shared cooperation set, a first SINR of the first user; Channel information in the serving cell, determining a second SINR of the second user.
在另一个实施例中, 所述 SINR确定子单元 5041还可以进一步用 于, 利用所述第一用户的服务小区内的信道信息, 计算所述第一用户 的第一 SINR; 利用所述协作集并集内的信道信息, 计算所述第二用 户的第二 SINR。 In another embodiment, the SINR determining subunit 5041 is further configured to: calculate, by using channel information in a serving cell of the first user, a first SINR of the first user; The channel information in the union is used to calculate a second SINR of the second user.
该实施例中, 采用了间接考虑小区协作对 V-MIMO配对的增益, 不需要基站物理层上报共有的协作集内的 H和 Ruu, 基站物理层也不 需要计算第一用户及第二用户共有的协作集内的 SINR, 测量量小, 计算复杂度小。 进一步的, 通过不同的计算方式获得待配对用户的 SINR并用于配对后性能增益评价, 能够适用运算处理能力不同的系 统, 提升了配对流程的效率及准确度。 In this embodiment, the gain of the V-MIMO pairing is considered indirectly, and the H and Ruu in the shared set of the shared layer are not required to be reported by the base station physical layer, and the physical layer of the base station does not need to calculate the first user and the second user. The SINR within the collaboration set is small in measurement and small in computational complexity. Further, the SINR of the user to be paired is obtained by different calculation methods and used for performance gain evaluation after pairing, and the system with different computing processing capability can be applied, which improves the efficiency and accuracy of the pairing process.
采用本发明实施例提供的基站, 确定小区中的待配对用户集合, 并选取待配对用户的协作集并集作为共有的协作集,特别是为作为非 小区边缘用户的待配对用户配置协作小区,进一步扩展了待配对用户 的协作集范围, 使得待配对用户可以获得较高的 SINR增益, 从而可 以有更好的机会选择最合适的待配对用户进行配对,提升了配对的成 功概率, 可以获得更高的配对增益, 达到减少小区间干扰、 提高系统
吞吐量、 提高用户数据传输速率的目的。 进一步的, 还可以按照基站 的运算处理能力对配对流程适应性修改, 提升了配对效率及准确度。 The base station provided by the embodiment of the present invention determines a set of users to be paired in a cell, and selects a union set of the users to be paired as a shared collaboration set, and in particular, configures a coordinated cell for the to-be-paired user that is a non-cell edge user. Further expanding the cooperation set range of the users to be paired, so that the users to be paired can obtain a higher SINR gain, so that there is a better chance of selecting the most suitable paired users to be paired, thereby improving the probability of success of the pairing, and obtaining more High pairing gain to reduce inter-cell interference and improve system Throughput, the purpose of increasing user data transfer rate. Further, the pairing process can be adaptively modified according to the computing processing capability of the base station, and the pairing efficiency and accuracy are improved.
本发明实施例提供了一种基站,如图 5所示,所述基站可以是 LTE 通信系统中的演进型节点 e-NodeB或者 LTE后续演进系统中的类似设 备。 本实施例所提供的基站及其内部模块的功能, 可实施前述方法实 施例步骤。 The embodiment of the present invention provides a base station. As shown in FIG. 5, the base station may be an evolved node e-NodeB in an LTE communication system or a similar device in an LTE subsequent evolution system. The functions of the base station and its internal modules provided in this embodiment may implement the steps of the foregoing method embodiments.
所述基站可以包括, 控制基站 501 , 所述控制基站 501通过通信总 线 502与所述基站其他部分相通信,所述基站其他部分包括但不限于, 比如,收发信机 503和或电源单元 504,或者传输部分,或者告警部分, 或者天馈部分, 或者操作维护部分, 本领域普通技术人员可以理解, 根据不同的实现方式,基站可以有不同的组成部分, 本实施例对此不 做限定, 不做穷尽例举。 The base station may include a control base station 501, and the control base station 501 communicates with other parts of the base station via a communication bus 502, and other parts of the base station include, but are not limited to, for example, a transceiver 503 and or a power supply unit 504. Or the transmission part, or the alarm part, or the antenna part, or the operation and maintenance part, those skilled in the art can understand that the base station can have different components according to different implementation manners, which is not limited in this embodiment. Do an exhaustive example.
所述通信总线可以是本地总线 (local bus ) 。 The communication bus can be a local bus.
所述基站还可以包括通信接口 505 , 用于与其他基站之间进行信 息交互。 比如, 所述通信接口 505可以是 X2接口。 所述 X2接口定义了 逻辑上的基站与基站之间的点对点连接,其物理层的具体实现方式可 以铜缆, 微波, 光纤等方法, 在此不做特别限定。 The base station may also include a communication interface 505 for performing information interaction with other base stations. For example, the communication interface 505 can be an X2 interface. The X2 interface defines a point-to-point connection between the base station and the base station in a logical manner. The specific implementation of the physical layer may be a copper cable, a microwave, an optical fiber, or the like, and is not particularly limited herein.
所述控制基站 501包括:存储器 5011,处理器 5012,通信链路 5013。 所述存储器 5011可以是闪存存储器(flash memory )或者随机存 储器(RAM, random access memory )等现有技术中的各类存储器 / 介质, 在此不做特别限定。 The control base station 501 includes a memory 5011, a processor 5012, and a communication link 5013. The memory 5011 may be a type of memory/media in the prior art such as a flash memory or a random access memory (RAM), which is not particularly limited herein.
所述处理器 5012可以是多核处理器,也可以是在地理位置上分散
并以通信链路连接的处理器, 可以是中央处理单元 (CPU, Central Processing Unit ) , 也可以是数字信号处理器 (DSP , digital signal processor )或者其他的专门处理器。 The processor 5012 may be a multi-core processor or may be geographically dispersed The processor connected by the communication link may be a central processing unit (CPU), a digital signal processor (DSP) or other special processor.
可选的,所述存储器 501和处理器 502可以集成在基站的基带处理 单元(BBU, base band unit ) 中。 Optionally, the memory 501 and the processor 502 may be integrated in a baseband processing unit (BBU) of the base station.
所述存储器 5011 , 可以用于存储一些指令。 The memory 5011 can be used to store some instructions.
所述处理器 5012,可以通过所述通信链路 5013和所述存储器 4011 相通信。 The processor 5012 can communicate with the memory 4011 via the communication link 5013.
所述存储器 5011中存储的指令, 通过所述处理器 5012执行后, 所 述控制基站 501可以使得所述基站可以实现一种虚拟多输入输出系统 的用户调度方法, 所述方法包括: 选择已进行数据传输调度的第一用 户, 所述第一用户配置有第一协作集; 所述第一协作集中包括所述第 一用户的服务小区及协作小区。 The instruction stored in the memory 5011 is executed by the processor 5012, and the control base station 501 can enable the base station to implement a user scheduling method of a virtual multiple input and output system, where the method includes: selecting has been performed The first user of the data transmission schedule, the first user is configured with a first cooperation set; the first cooperation set includes a serving cell and a coordinated cell of the first user.
选择未进行数据传输调度的第二用户,所述第二用户配置有第二 协作集; 所述第二协作集中包括所述第二用户的服务小区及协作小 区。 Selecting a second user that does not perform data transmission scheduling, the second user is configured with a second cooperation set; and the second cooperation set includes a serving cell and a collaboration cell of the second user.
利用所述第一协作集与所述第二协作集,将所述第一用户与所述 第二用户进行配对。 The first user and the second user are paired using the first collaboration set and the second collaboration set.
其中, 对第一用户的选择方法可以是现有技术中的各类方法, 例 如轮询选择, 随机选择, 比例公平选择等, 本发明实施例中对此不做 特别限定。 对第二配对用户选择方法也可以是现有技术中的各类方 法, 例如随机选择、 比例公平选择、 正交选择等, 本发明实施例中对
此也不做特别限定。 The method for selecting the first user may be various methods in the prior art, such as a polling selection, a random selection, a proportional fair selection, and the like, which are not specifically limited in the embodiment of the present invention. The second pair of user selection methods may also be various methods in the prior art, such as random selection, proportional fair selection, orthogonal selection, etc., in the embodiment of the present invention. This is not particularly limited.
在本发明的另一个实施例中, 如图 8所示, 所述处理器 5012中还 可以包括运算器 5012a, 通用寄存器 5012b, 控制部件 5012c, 所述控 制部件还可以包括, 指令译码器 5012c ( 1 ) , 操作控制器 5023c ( 2 ) 所述运算器 5012a, 可以用于执行所述存储器 5011存储的指令的 算术和逻辑运算操作。 In another embodiment of the present invention, as shown in FIG. 8, the processor 5012 may further include an operator 5012a, a general-purpose register 5012b, and a control component 5012c. The control component may further include an instruction decoder 5012c. (1) The operation controller 5023c (2) may use the arithmetic unit 5012a to perform arithmetic and logical operation operations of the instructions stored in the memory 5011.
所述通用寄存器 5012b, 可以用于保存执行所述存储器 5011存储 的指令的过程中临时存放的寄存器操作数和中间的操作结果。 The general-purpose register 5012b can be used to store register operands temporarily stored in the process of executing the instructions stored in the memory 5011 and intermediate operation results.
所述控制部件 5012c, 可以包括指令译码器 5012c ( 1 ) , 用于对 存储器 5011中存储的指令进行译码,并且发出为完成每条指令所要执 行的各个操作的控制信号, 操作控制器 5012c ( 2 )用于接收所述控制 信号, 完成所述指令的具体操作。 所述控制部件 5012c可以是以微存 储为核心的微程序控制芯片,或者是以逻辑硬布线结构为主的控制线 路, 本发明实施例不做特别限定。 The control unit 5012c may include an instruction decoder 5012c(1) for decoding instructions stored in the memory 5011 and issuing control signals for performing various operations to be performed for each instruction, the operation controller 5012c (2) for receiving the control signal to complete a specific operation of the instruction. The control unit 5012c may be a micro-program control chip with a micro-storage as a core or a control circuit with a logical hard-wired structure as the main control, which is not limited in the embodiment of the present invention.
所述处理器 5012中的各器件之间可以互相通信,也可以将所述各 器件集成在一个硬件中。 The devices in the processor 5012 can communicate with each other, or the devices can be integrated into one hardware.
可选的, 所述存储器 5011中还可以存储一些指令, 所述处理器 5012执行所述指令后, 所述控制基站 501可以使得所述第一用户的协 作小区包括所述第一用户的第一类协作小区和第二类协作小区;或者 所述第一用户的协作小区为第二类协作小区。 Optionally, the memory 5011 may further store some instructions. After the processor 5012 executes the instruction, the control base station 501 may enable the coordinated cell of the first user to include the first user. a cooperative cell of the second type and a coordinated cell of the second type; or the coordinated cell of the first user is a second type of coordinated cell.
所述第一类协作小区包括所述第一用户的服务小区的邻区,所述 第一用户的服务小区的邻区的 RSRP与所述第一用户在服务小区的
RSRP的差值处于预设的门限值范围内。 The first type of coordinated cell includes a neighboring cell of the serving cell of the first user, the RSRP of the neighboring cell of the serving cell of the first user, and the first user in the serving cell The RSRP difference is within the preset threshold.
所述第二类协作小区包括所述第一用户的服务小区的邻区,所述 第一用户的服务小区的邻区包含与所述第一用户具有相同 RB的用 户,且所述第一用户的服务小区的邻区中的与所述第一用户具有相同 资源块的用户的协作小区是所述第一用户的服务小区。 The second type of coordinated cell includes a neighboring cell of the serving cell of the first user, and the neighboring cell of the serving cell of the first user includes a user having the same RB as the first user, and the first user The coordinated cell of the user in the neighboring cell of the serving cell that has the same resource block as the first user is the serving cell of the first user.
利用第一类协作小区进行联合信号发送,可以为第一用户带来信 号合并增益。具有第一类协作小区的用户可以是服务小区的小区边缘 用户, 所述小区边缘用户可以根据用户到基站的距离来判断, 或者根 据半径比所在位置对应的信道衰落来判断。 The joint signal transmission using the first type of coordinated cell can bring the signal combining gain to the first user. The user having the first type of coordinated cell may be a cell edge user of the serving cell, and the cell edge user may judge according to the distance from the user to the base station, or according to the channel fading corresponding to the radius corresponding to the location.
确定第二类协作小区,可以为属于非小区边缘用户的第一用户配 置协作小区, 扩展了非小区边缘用户地协作集的范围, 所述第二类协 作小区可以将非小区边缘用户向服务小区发送信号时产生的干扰转 换为可用信号, 与服务小区进行协作通信, 抑制了邻区干扰, 提升非 小区边缘用户的 SINR, 增加了可用于配对的用户的范围, 提高了配 对的成功率, 进一步的, 通过具有协作小区的用户间的配对, 能够获 得更大的配对增益, 增加系统吞吐量。 Determining the second type of coordinated cell, the cooperative cell may be configured for the first user belonging to the non-cell edge user, and the range of the coordinated set of the non-cell edge user may be extended, and the second type of coordinated cell may send the non-cell edge user to the serving cell The interference generated when the signal is transmitted is converted into an available signal, and cooperative communication with the serving cell suppresses the neighboring cell interference, improves the SINR of the non-cell edge user, increases the range of users that can be used for pairing, and improves the success rate of the pairing, further By pairing between users with coordinated cells, a larger pairing gain can be obtained, increasing system throughput.
可选的, 所述存储器 5011还存储有一些指令, 所述处理器 5012 执行后, 所述控制基站 501可以使得所述基站为所述第二用户确定协 作小区。 由于所述第二用户为未调度用户, 不存在邻区调度信息的交 互, 只具有第一类协作小区。 Optionally, the memory 5011 further stores some instructions. After the processor 5012 is executed, the control base station 501 may enable the base station to determine a cooperative cell for the second user. Since the second user is an unscheduled user, there is no interaction of the neighboring cell scheduling information, and only the first type of coordinated cell is present.
选取所述第一用户或第二用户的协作小区的具体方法可参照本 发明其他实施例中的相关描述, 在此不做赞述。
所述第一用户及第二用户的配对方式可以是现有技术中的各种 方式, 例如, 正交配对算法、 随机配对算法、 行列式配对算法等, 本 发明实施例对此不做特别限定。 For a specific method for selecting the coordinated cell of the first user or the second user, reference may be made to the related description in other embodiments of the present invention, which is not described herein. The pairing manner of the first user and the second user may be various manners in the prior art, for example, an orthogonal matching algorithm, a random matching algorithm, a determinant pairing algorithm, etc., which are not specifically limited in this embodiment of the present invention. .
可选的, 所述存储器 5011还存储有一些指令, 所述处理器 5012 执行后, 所述控制基站 501可以使得所述基站选取所述第一用户与第 二用户共有的协作集,所述共有的协作集是所述第一协作集与所述第 二协作集的并集。 利用所述协作集的并集, 对所述第一用户与所述第 二用户进行配对。所述协作集的并集的选取方法可参照本发明其他实 施例中的相关描述, 在此不做赞述。 Optionally, the memory 5011 further stores some instructions. After the processor 5012 is executed, the control base station 501 may enable the base station to select a collaboration set shared by the first user and the second user, where the shared The collaboration set is a union of the first collaboration set and the second collaboration set. The first user and the second user are paired using the union of the collaboration sets. The method for selecting the union of the collaboration sets can be referred to the related description in other embodiments of the present invention, and is not described herein.
可选的, 当用户的最大协作集范围受限时, 可以取第一用户的协 作集作为第一用户与第二用户共有的协作集。 Optionally, when the maximum collaboration set range of the user is limited, the collaboration set of the first user may be taken as a collaboration set shared by the first user and the second user.
采用协作集并集作为待配对的第一用户及第二用户共有的协作 集, 扩大了待配对用户的协作集范围, 增加了参与第一用户或第二用 户协作通信的小区数量, 更好地抑制了小区间干扰,提高了无线频谱 利用率, 因此, 在协作集并集内判断用户间的配对, 可以提升配对的 成功率, 配对成功后的 V-MIMO用户对在与基站进行通信时, 也能够 获得更多的信号合并增益以及干扰抑制增益。 The collaboration set is used as the collaboration set shared by the first user and the second user to be paired, which expands the cooperation set range of the users to be paired, and increases the number of cells participating in the first user or the second user collaborative communication, and better The inter-cell interference is suppressed, and the wireless spectrum utilization rate is improved. Therefore, judging the pairing between users in the union of the cooperative sets can improve the success rate of the pairing. When the paired V-MIMO user pair communicates with the base station, It is also possible to obtain more signal combining gain and interference suppression gain.
进一步的, 所述存储器 5011还存储有一些指令, 所述处理器 5012 执行后, 所述控制基站 501可以使得所述基站计算所述第一用户在所 述共有的协作集内的第一 SINR, 计算所述第二用户在所述共有的协 作集内的第二 SINR, 判断所述第一用户可以与所述第二用户配对。 Further, the memory 5011 further stores some instructions. After the processor 5012 is executed, the control base station 501 may enable the base station to calculate a first SINR of the first user in the shared collaboration set. Calculating a second SINR of the second user in the shared collaboration set, and determining that the first user can be paired with the second user.
具体的,所述处理器 5012可以通过获取第一用户及第二用户在共
有的协作集中对应的信道信息,计算所述第一用户及第二用户的后处 理 SINR, 判断待配对的第一用户及第二用户是否配对成功。 Specifically, the processor 5012 can obtain the first user and the second user in total. The cooperation collects the corresponding channel information, calculates the post-processing SINR of the first user and the second user, and determines whether the first user and the second user to be paired are successfully paired.
后处理 SINR是标志吞吐量的最重要的指标, 与信道质量、 系统 容量、频谱效率等系统性能参数都存在映射关系, 可以体现系统吞吐 量的变化, 即可以体现配对后的用户性能增益。 因此, 可以后处理 SINR可以作为判断第一用户是否可以与第一用户成功配对的评价指 标。 用户的 SINR越高, 说明受到的干扰越小, 系统吞吐量越高, 配 对效果越好。 Post-processing SINR is the most important indicator of the flag throughput. It has a mapping relationship with system performance parameters such as channel quality, system capacity, and spectrum efficiency. It can reflect the change in system throughput, which can reflect the user performance gain after pairing. Therefore, the post-processing SINR can be used as an evaluation index for judging whether the first user can successfully pair with the first user. The higher the user's SINR, the smaller the interference, the higher the system throughput, and the better the matching effect.
可选的, 可以通过 SINR映射的信道质量及频谱效率来判断第一 用户及第二用户能否配对成功。 可选的, 也可以通过 SINR计算得到 用户发射功率来表征配对后的用户性能增益,从而判断第一用户及第 二用户能否配对成功。具体的判断过程可以参照本发明其他实施例中 的相关描述, 在此不做贅述。 Optionally, the channel quality and spectrum efficiency of the SINR mapping can be used to determine whether the first user and the second user can be successfully paired. Optionally, the user transmit power can also be calculated by using the SINR to represent the user performance gain after the pairing, so as to determine whether the first user and the second user can be successfully paired. For a specific judgment process, reference may be made to related descriptions in other embodiments of the present invention, and details are not described herein.
此外, 还可以采用现有的各种配对性能评价方式, 包括吞吐量最 大化准则、 公平性准则等, 本发明实施例对此不做特别限定。 In addition, the existing various matching performance evaluation methods, including the throughput optimization criterion, the fairness criterion, and the like, may be used, and the embodiment of the present invention does not specifically limit this.
采用现有的各种评价方式,若能够达到系统对配对后性能增益的 要求, 表示第一用户与第二用户配对成功, 结束本次配对过程, 所述 处理器 5012可以在所述已调度用户集合及未调度用户集合中各自重 新选择一个用户进行配对尝试;所述若未能达到系统对配对后性能增 益的要求, 表示第一用户与第二用户配对失败, 所述处理器 5012可 以发送在未调度用户集合中重新选择一个用户与第一用户进行配对 尝试, 直到配对成功, 或者遍历所述未调度用户集合, 没有用户能够
与第一用户配对成功, 则结束配对。 If the system meets the requirements of the performance gain after the pairing, the first user is successfully paired with the second user, and the pairing process is ended. The processor 5012 can be in the scheduled user. Each of the set and unscheduled user sets reselects a user to perform a pairing attempt; if the system fails to meet the performance requirement of the paired performance gain, indicating that the first user fails to pair with the second user, the processor 5012 may send Reselecting a user in the unscheduled user set to perform a pairing attempt with the first user until the pairing is successful, or traversing the unscheduled user set, no user can If the pairing with the first user is successful, the pairing ends.
可选的, 所述存储器 5011还存储有一些指令, 所述处理器 5012 执行后, 所述控制基站 501可以使得所述基站可以利用所述第一用户 的服务小区内的信道信息, 获取所述第一用户的服务小区的 SINR, 并利用所述第一用户在所述共有的协作集中获得的 SINR增益对所述 第一用户的服务小区的 SINR进行修正, 得到所述第一 SINR; 以及, 所述基站可以利用所述第二用户的服务小区内的信道信息,获取所述 第二用户的服务小区的 SINR, 并利用所述第二用户在所述共有的协 作集中获得的 SINR增益对所述第二服务小区 SINR进行修正, 得到所 述第二 SINR。 Optionally, the memory 5011 further stores some instructions. After the processor 5012 is executed, the control base station 501 may enable the base station to use the channel information in the serving cell of the first user to obtain the SINR of the serving cell of the first user, and correcting the SINR of the serving cell of the first user by using the SINR gain obtained by the first user in the shared cooperation set, to obtain the first SINR; The base station may acquire the SINR of the serving cell of the second user by using the channel information in the serving cell of the second user, and use the SINR gain obtained by the second user in the shared cooperation set. The second serving cell SINR is corrected to obtain the second SINR.
在本实施例中, 第一用户在协作集内的后处理 SINR为 SINR1 ,及 没有协作集状态下, 在服务小区内的 SINR为 SINR2 , SINR增益 =SINR2-SINR1 (单位: db )。 按同样计算方式, 可以获取第二用户的 SINR增益。 利用所述 SINR增益可以对第一用户或第二用户仅在在服 务小区内的 SINR进行修正, 修正后的后处理 SINR可以用于映射到频 谱效率或发射功率, 计算配对后的性能增益, 具体的修正方式、 以及 修正后的映射及计算方式在前述方法实施例中已有说明,在此不做贅 述。 In this embodiment, the SINR of the first user in the cooperative set is SINR1, and in the absence of the cooperative set, the SINR in the serving cell is SINR2, and the SINR gain is SINR2-SINR1 (unit: db). According to the same calculation method, the SINR gain of the second user can be obtained. The SINR gain may be used to correct the SINR of the first user or the second user only in the serving cell, and the modified post-processing SINR may be used to map to the spectrum efficiency or the transmit power, and calculate the performance gain after the pairing. The modification method and the modified mapping and calculation method are described in the foregoing method embodiments, and are not described herein.
可选的, 为保证已调度用户的协作性能, 在计算协作集并集时, 可以以已调度用户为主,考虑系统实际处理能力,如果当后处理 SINR 的修正会影响系统性能, 对后处理 SINR的修正可以以已调度用户为 主。
对服务小区内计算得到的 SINR进行修正, 间接考虑小区协作对 V-MIMO 配对的增益, 不需要基站物理层上报共有的协作集内的 H 和 Ruu,基站物理层也不需要计算第一用户及第二用户共有的协作集 内的 SINR, 测量量小, 计算复杂度小。 进一步的, 通过不同的计算 方式获得待配对用户的 SINR并用于配对后性能增益评价, 能够适用 运算处理能力不同的系统, 提升了配对流程的效率及准确度。 Optionally, to ensure the collaboration performance of the scheduled users, when calculating the union of the collaboration set, the scheduled users may be the main ones, and the actual processing capability of the system may be considered. If the SINR correction affects the system performance, the post-processing is performed. The SINR correction can be based on the scheduled users. Correcting the calculated SINR in the serving cell, indirectly considering the gain of the cell cooperation for the V-MIMO pairing, without requiring the base station physical layer to report the H and Ruu in the shared cooperative set, and the base station physical layer does not need to calculate the first user and The SINR in the collaboration set shared by the second user has a small measurement amount and a small computational complexity. Further, the SINR of the user to be paired is obtained by different calculation methods and used for the performance gain evaluation after the pairing, and the system with different computing processing capabilities can be applied, and the efficiency and accuracy of the pairing process are improved.
本发明实施例所述 "通信" 或 "通信总线" , 可以是直接通信或 间接通信; 也可以是逻辑通信, 或者是物理连线通信; 也可以是点对 点通信, 或者是利用总线通信, 本发明实施例对此不做任何限定。 The "communication" or "communication bus" in the embodiment of the present invention may be direct communication or indirect communication; or may be logical communication or physical connection communication; or may be point-to-point communication, or use bus communication, the present invention The embodiment does not limit this.
采用本发明实施例提供的用户调度方法,确定小区中的待配对用 户集合, 并选取待配对用户的协作集并集作为共有的协作集, 扩大了 用户协作集范围, 用户可以获得较高的 SINR增益, 可以有更好的机 会选择最合适的待配对用户, 提升了配对的成功概率, 进而, 通过小 区间协作的 V-MIMO配对可以获得更好的配对增益,达到减少小区间 干扰、提高系统吞吐量、 改善小区边缘的覆盖和提高用户数据传输速 率的目的。 进一步的, 还可以按照基站的运算处理能力对配对流程适 应性修改, 提升了配对效率及准确度。 The user scheduling method provided by the embodiment of the present invention determines a set of users to be paired in a cell, and selects a union set of the users to be paired as a shared collaboration set, and expands the scope of the user collaboration set, and the user can obtain a higher SINR. Gain, there is a better chance to choose the most suitable user to be paired, which improves the probability of pairing success. Furthermore, V-MIMO pairing between cells can achieve better pairing gain, reduce inter-cell interference, and improve system. Throughput, improve coverage at the cell edge and increase the rate of user data transmission. Further, the adaptability of the pairing process can be modified according to the computing processing capability of the base station, and the pairing efficiency and accuracy are improved.
本所属领域的技术人员可以清楚地了解到, 为描述的方便和简 洁, 上述描述的系统、 设备、 模块和单元的具体工作过程, 可以参考 前述方法实施例中的对应过程, 在此不再贅述。 A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device, the module and the unit described above may refer to the corresponding process in the foregoing method embodiment, and details are not described herein again. .
通过以上的实施例的描述,所属领域的技术人员可以清楚地了解 到本发明可借助软件加必需的通用硬件平台的方式来实现, 当然也可
以通过硬件,但很多情况下前者是更佳的实施方式。基于这样的理解, 本发明的技术方案本质上或者说对现有技术做出贡献的部分可以以 软件产品的形式体现出来, 该计算机软件产品存储在一个存储介质 中, 包括若干指令用以使得一台计算机设备(可以是个人计算机, 服 务器, 或者网络设备等)执行本发明各个实施例所述方法的全部或部 分步骤。而前述的存储介质包括: U盘、移动硬盘、只读存储器(ROM )、 随机存取存储器 ( RAM )、磁碟或者光盘等各种可以存储程序代码的介 Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus a necessary general hardware platform, and of course To pass the hardware, but in many cases the former is a better implementation. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium, including a plurality of instructions for making a A computer device (which may be a personal computer, server, or network device, etc.) performs all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a USB flash drive, a removable hard disk, a read only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes.
在本申请所提供的几个实施例中, 应该理解到, 所揭露的系统、 设备和方法,在没有超过本申请的范围内,可以通过其他的方式实现。 例如, 以上所描述的基站实施例仅仅是示意性的, 例如, 所述模块或 单元的划分, 仅仅为一种逻辑功能划分, 实际实现时可以有另外的划 分方式, 例如多个单元或组件可以结合或者可以集成到另一个系统, 或一些特征可以忽略, 或不执行。 其中所述作为分离部件说明的单元 可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或 者也可以不是物理单元, 即可以位于一个地方, 或者也可以分布到多 个网络单元上。可以根据实际的需要选择其中的部分或者全部模块来 实现本实施例方案的目的。本领域普通技术人员在不付出创造性劳动 的情况下, 即可以理解并实施。 另外, 所描述系统、 设备和方法以及不同实施例的示意图, 在不 超出本申请的范围内, 可以与其它系统, 模块, 技术或方法结合或集 成。 另一点, 所显示或讨论的相互之间的耦合或直接耦合或通信连接
可以是通过一些接口,基站或单元的间接耦合或通信连接, 可以是电 子、 机械或其它的形式。 以上所述,仅为本发明的具体实施方式, 但本发明的保护范围并 不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范 围内, 可轻易想到变化或替换, 都应涵盖在本发明的保护范围之内。 因此, 本发明的保护范围应所述以权利要求的保护范围为准。
In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners without departing from the scope of the present application. For example, the base station embodiment described above is only illustrative. For example, the division of the module or unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be used. Combined or can be integrated into another system, or some features can be ignored, or not executed. The units described as the separate components may or may not be physically separated, and the components displayed as the unit may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. . Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment. Those of ordinary skill in the art can understand and implement without any creative effort. In addition, the described systems, devices, and methods, and the schematic diagrams of various embodiments, may be combined or integrated with other systems, modules, techniques or methods without departing from the scope of the present application. Another point, the mutual coupling or direct coupling or communication connection shown or discussed It may be an indirect coupling or communication connection through some interface, base station or unit, and may be in electronic, mechanical or other form. The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.
Claims
1、 一种基站, 其特征在于, 包括一个控制装置, 所述控制基站 通过通信总线与所述基站其他部分相通信; 1. A base station, characterized in that it includes a control device, and the control base station communicates with other parts of the base station through a communication bus;
所述控制装置包括: 存储器, 处理器, 通信链路; The control device includes: memory, processor, communication link;
所述存储器, 用于存储指令; The memory is used to store instructions;
所述处理器, 通过所述通信链路和所述存储器相通信; 所述存储器中存储的一些指令, 通过所述处理器执行后, 所述控 制装置使得所述基站可以实现一种虚拟多输入输出系统的用户调度 方法, 所述方法包括: The processor communicates with the memory through the communication link; after some instructions stored in the memory are executed by the processor, the control device enables the base station to implement a virtual multi-input The user scheduling method of the output system includes:
选择已进行数据传输调度的第一用户,所述第一用户具有第一协 作集; 所述第一协作集中包括所述第一用户的服务小区及协作小区; 选择未进行数据传输调度的第二用户,所述第二用户具有第二协 作集; 所述第二协作集中包括所述第二用户的服务小区及协作小区; 利用所述第一协作集与所述第二协作集,将所述第一用户与所述 第二用户进行配对。 Select the first user who has performed data transmission scheduling, and the first user has a first coordination set; the first coordination set includes the serving cell and the coordination cell of the first user; select the second user who has not performed data transmission scheduling user, the second user has a second cooperation set; the second cooperation set includes the serving cell and the cooperation cell of the second user; using the first cooperation set and the second cooperation set, the The first user is paired with the second user.
2、 根据权利要求 1所述的基站, 其特征在于, 2. The base station according to claim 1, characterized in that,
所述存储器中存储的一些指令, 所述处理器执行后, 所述控制装 置使得所述第一用户的协作小区包括所述第一用户的第一类协作小 区和第二类协作小区;或者所述第一用户的协作小区为第二类协作小 区; After some instructions stored in the memory are executed by the processor, the control device causes the coordinated cell of the first user to include the first type of coordinated cell and the second type of coordinated cell of the first user; or the The cooperative cell of the first user is a second type of cooperative cell;
所述第一类协作小区包括所述第一用户的服务小区的邻区,所述 第一用户的服务小区的邻区的参考信号接收功率 RSRP与所述第一用
户在服务小区的 RSRP的差值处于预设的门限值范围内; 所述第二类协作小区包括所述第一用户的服务小区的邻区,所述 第一用户的服务小区的邻区包含与所述第一用户具有相同无线资源 块的用户,且所述第一用户的服务小区的邻区中的与所述第一用户具 有相同资源块的用户的协作小区是所述第一用户的服务小区。 The first type of coordinated cells includes neighboring cells of the first user's serving cell, and the reference signal received power RSRP of the neighboring cells of the first user's serving cell is the same as that of the first user. The difference in RSRP of the user in the serving cell is within the preset threshold range; the second type of cooperative cells includes neighboring cells of the first user's serving cell, and the neighboring cells of the first user's serving cell Includes users who have the same radio resource blocks as the first user, and the cooperative cell of the user who has the same resource blocks as the first user in the neighboring cells of the serving cell of the first user is the first user service area.
3、 根据权利要求 1或者 2任一所述的基站, 其特征在于, 所述存 储器还存储有一些指令, 所述处理器执行后, 所述控制装置使得所述 基站利用所述第一用户与第二用户共有的协作集,将所述第一用户与 所述第二用户进行配对; 3. The base station according to claim 1 or 2, characterized in that the memory also stores some instructions, and after the processor executes the control device, the control device causes the base station to use the first user and the A collaboration set shared by the second user to pair the first user with the second user;
所述共有的协作集是所述第一协作集与所述第二协作集的并集。 The shared cooperation set is the union of the first cooperation set and the second cooperation set.
4、 根据权利要求 3所述的基站, 其特征在于, 所述存储器还存储 有一些指令, 所述处理器执行后, 所述控制装置使得所述基站获取到 所述第一用户在所述共有的协作集内的第一信号与干扰噪声比 SINR; 4. The base station according to claim 3, characterized in that the memory also stores some instructions, and after execution by the processor, the control device causes the base station to obtain the information of the first user in the shared information. The first signal-to-interference-noise ratio SINR within the cooperation set;
以及, 获取所述第二用户在所述共有的协作集内的第二 SINR; 以及, 基于所述第一 SINR和第二 SINR, 判断所述第一用户可以 与所述第二用户配对。 And, obtain the second SINR of the second user in the shared cooperation set; and, based on the first SINR and the second SINR, determine that the first user can be paired with the second user.
5、 根据权利要求 4所述的基站, 其特征在于, 所述存储器还存储 了一段指令, 所述处理器执行后, 所述控制装置使得所述基站利用所 述共有的协作集内的信道信息, 计算得到所述第一 SINR; 5. The base station according to claim 4, characterized in that the memory also stores a section of instructions, and after execution by the processor, the control device causes the base station to utilize the channel information in the shared cooperative set , calculate the first SINR;
以及, 利用所述共有的协作集内的信道信息, 计算得到所述第二 SINR。
And, the second SINR is calculated using the channel information in the shared cooperative set.
6、 根据权利要求 4或 5所述的基站, 其特征在于, 所述存储器还 存储了一段指令, 所述处理器执行后, 所述控制装置利用所述第一用 户的服务小区内的信道信息, 获取所述第一用户的服务小区的 SINR, 利用所述第一用户在所述共有的协作集中获得的 SINR增益对所述第 一用户的服务小区的 SINR进行修正, 得到所述第一 SINR; 6. The base station according to claim 4 or 5, characterized in that the memory also stores an instruction, and after the processor executes it, the control device uses the channel information in the serving cell of the first user. , obtain the SINR of the serving cell of the first user, use the SINR gain obtained by the first user in the shared coordination set to correct the SINR of the serving cell of the first user, and obtain the first SINR ;
以及, 利用所述第二用户的服务小区内的信道信息, 获取所述第 二用户的服务小区的 SINR, 利用所述第二用户在所述共有的协作集 中获得的 SINR增益对所述第一服务小区 SINR进行修正, 得到所述第 二 S賺。 And, use the channel information in the second user's serving cell to obtain the SINR of the second user's serving cell, and use the SINR gain obtained by the second user in the shared coordination set to calculate the first The serving cell SINR is corrected to obtain the second S earned.
7、 一种基站, 其特征在于, 包括, 7. A base station, characterized by: including,
用户选择单元, 协作集确定单元, 控制单元; The user selects the unit, the collaboration set determines the unit, and the control unit;
所述用户选择单元,被配置成用于选择已进行数据传输调度的第 一用户, 以及用于选择未进行数据传输调度的第二用户; The user selection unit is configured to select a first user who has performed data transmission scheduling, and to select a second user who has not performed data transmission scheduling;
所述协作集确定单元,被配置成用于将所述第一用户的服务小区 及协作小区作为所述第一用户的第一协作集;以及用于将所述第二用 户的服务小区及协作小区作为所述第二用户的第二协作集; The cooperative set determining unit is configured to use the serving cell and the cooperative cell of the first user as the first cooperative set of the first user; and to use the serving cell and the cooperative cell of the second user as the first cooperative set. The cell serves as the second coordinated set of the second user;
所述控制单元, 与所述用户选择单元相通信, 或者与所述用户选 择单元以及协作集确定单元相通信,被配置成利用所述第一协作集与 所述第二协作集, 对所述第一用户和所述第二用户进行配对。 The control unit, in communication with the user selection unit, or with the user selection unit and the cooperation set determination unit, is configured to utilize the first cooperation set and the second cooperation set, to The first user and the second user are paired.
8、 根据权利要求 7所述的基站, 其特征在于, 所述协作集确定单 元具体用于: 被配置成确定所述第一用户的协作小区, 所述协作小区 包括所述第一用户的第一类协作小区与第二类协作小区;或者所述第
一用户的协作小区为第二类协作小区; 8. The base station according to claim 7, wherein the cooperation set determination unit is specifically configured to: determine a cooperative cell of the first user, and the cooperative cell includes a third cooperative cell of the first user. A type of coordinated cell and a second type of coordinated cell; or the third type of coordinated cell The cooperative cell of a user is a second type of cooperative cell;
所述第一类协作小区包括所述第一用户的服务小区的邻区,所述 第一用户的服务小区的邻区的参考信号接收功率 RSRP与所述第一用 户在服务小区的 RSRP的差值处于预设的门限值范围内; The first type of coordinated cells includes neighboring cells of the first user's serving cell, and the difference between the reference signal received power RSRP of the neighboring cells of the first user's serving cell and the first user's RSRP in the serving cell The value is within the preset threshold range;
所述第二类协作小区包括所述第一用户的服务小区的邻区,所述 第一用户的服务小区的邻区包含与所述第一用户具有相同无线资源 块的用户,且所述第一用户的服务小区的邻区中的与所述第一用户具 有相同资源块的用户的协作小区是所述第一用户的服务小区。 The second type of coordinated cells includes neighboring cells of the first user's serving cell, and the neighboring cells of the first user's serving cell include users with the same radio resource block as the first user, and the third A cooperating cell of a user that has the same resource block as the first user in a neighboring cell of a user's serving cell is the first user's serving cell.
9、 根据权利要求 7或 8任一所述的基站, 其特征在于, 所述控制 单元还包括共有协作集选取子单元, 配对子单元; 9. The base station according to claim 7 or 8, characterized in that the control unit further includes a shared cooperation set selection subunit and a pairing subunit;
所述共有协作集选取子单元,被配置成用于选取所述第一用户与 第二用户共有的协作集,所述共有的协作集是所述第一协作集与所述 第二协作集的并集; The shared collaboration set selection subunit is configured to select a collaboration set shared by the first user and the second user, and the shared collaboration set is a combination of the first collaboration set and the second collaboration set. Union;
所述配对子单元,被配置成用于, 利用所述共有协作集选取子单 元选取的所述第一用户与第二用户共有的协作集,对所述第一用户与 所述第二用户进行配对。 The pairing subunit is configured to use the collaboration set shared by the first user and the second user selected by the shared collaboration set selection subunit to perform matching on the first user and the second user. pair.
10、 根据权利要求 9所述的基站, 其特征在于, 所述控制单元还 包括 SINR计算子单元, 所述 SINR计算子单元与所述共有协作集选取 子单元以及所述配对子单元相通信, 10. The base station according to claim 9, characterized in that, the control unit further includes a SINR calculation subunit, the SINR calculation subunit communicates with the shared cooperative set selection subunit and the pairing subunit,
所述 SINR计算子单元, 被配置成用于获得所述第一用户在所述 共有的协作集内的第一 SINR; 以及, 被配置成用于获得所述第二用 户在所述共有的协作集内的第二 SINR;
所述配对子单元, 被配置成具体用于, 利用所述 SINR计算子单 元获得的所述第一用户在所述共有的协作集内的第一 SINR和所述第 二用户在所述共有的协作集内的第二 SINR, 判断所述第一用户可以 与所述第二用户配对。 The SINR calculation subunit is configured to obtain the first SINR of the first user in the shared collaboration set; and, is configured to obtain the second user in the shared collaboration set. Second SINR within the set; The pairing subunit is specifically configured to use the first SINR of the first user in the shared cooperation set and the second user in the shared cooperation set obtained by the SINR calculation subunit. The second SINR in the cooperation set determines that the first user can be paired with the second user.
11、 根据权利要求 10所述的基站, 其特征在于, 所述 SINR计算 子单元具体用于, 被配置成利用所述共有的协作集内的信道信息, 计 算得到所述第一 SINR; 以及, 被配置成利用所述共有的协作集内的 信道信息, 计算得到所述第二 SINR。 11. The base station according to claim 10, wherein the SINR calculation subunit is specifically configured to calculate the first SINR using channel information in the shared cooperative set; and, Configured to calculate the second SINR using channel information in the common cooperative set.
12、 根据权利要求 10或 11任一所述的基站, 其特征在于, 所述 SINR计算子单元具体用于, 被配置成, 利用所述第一用户的服务小 区内的信道信息, 获取所述第一用户的服务小区的 SINR, 利用所述 第一用户在所述共有的协作集中获得的 SINR增益对所述第一用户的 服务小区的 SINR进行修正, 得到所述第一 SINR; 以及, 被配置成, 利用所述第二用户的服务小区内的信道信息,获取所述第二用户的服 务小区的 SINR, 利用所述第二用户在所述共有的协作集中获得的 SINR增益对所述第一服务小区 SINR进行修正, 得到所述第二 SINR。 12. The base station according to any one of claims 10 or 11, characterized in that the SINR calculation subunit is specifically configured to use channel information in the serving cell of the first user to obtain the The SINR of the serving cell of the first user is modified by using the SINR gain obtained by the first user in the shared coordination set to obtain the first SINR; and, Configured to: utilize the channel information in the serving cell of the second user to obtain the SINR of the serving cell of the second user, and use the SINR gain obtained by the second user in the shared coordination set to calculate the SINR of the serving cell of the second user. The SINR of a serving cell is modified to obtain the second SINR.
13、 一种用户调度方法, 其特征在于, 包括, 13. A user scheduling method, characterized by:
基站选择已进行数据传输调度的第一用户,所述第一用户具有第 一协作集; The base station selects the first user who has performed data transmission scheduling, and the first user has a first cooperative set;
所述第一协作集中包括所述第一用户的服务小区及协作小区; 所述基站选择未进行数据传输调度的第二用户,所述第二用户具 有第二协作集;
所述第二协作集中包括所述第二用户的服务小区及协作小区; 所述基站利用所述第一协作集与所述第二协作集,将所述第一用 户与所述第二用户进行配对。 The first coordination set includes the serving cell and the coordination cell of the first user; the base station selects a second user that does not perform data transmission scheduling, and the second user has a second coordination set; The second coordination set includes the serving cell and the coordination cell of the second user; the base station uses the first coordination set and the second coordination set to perform the communication between the first user and the second user. pair.
14、 根据权利要求 13所述的方法, 其特征在于, 所述第一用户的 协作小区包括: 所述第一用户的第一类协作小区和第二类协作小区; 或者所述第一用户的协作小区为第二类协作小区; 14. The method according to claim 13, characterized in that the coordinated cells of the first user include: the first type of coordinated cells and the second type of coordinated cells of the first user; or the first type of coordinated cells of the first user. The cooperative community is the second type of cooperative community;
所述第一类协作小区包括所述第一用户的服务小区的邻区,所述 第一用户的服务小区的邻区的参考信号接收功率 RSRP与所述第一用 户在服务小区的 RSRP的差值处于预设的门限值范围内; The first type of coordinated cells includes neighboring cells of the first user's serving cell, and the difference between the reference signal received power RSRP of the neighboring cells of the first user's serving cell and the first user's RSRP in the serving cell The value is within the preset threshold range;
所述第二类协作小区包括所述第一用户的服务小区的邻区,所述 第一用户的服务小区的邻区包含与所述第一用户具有相同无线资源 块的用户,且所述第一用户的服务小区的邻区中的与所述第一用户具 有相同资源块的用户的协作小区是所述第一用户的服务小区。 The second type of coordinated cells includes neighboring cells of the first user's serving cell, and the neighboring cells of the first user's serving cell include users with the same radio resource block as the first user, and the third A cooperating cell of a user that has the same resource block as the first user in a neighboring cell of a user's serving cell is the first user's serving cell.
15、 根据权利要求 13或者 14任一所述的方法, 其特征在于, 所述 基站利用所述第一协作集与所述第二协作集,将所述第一用户与所述 第二用户进行配对, 具体包括, 15. The method according to any one of claims 13 or 14, characterized in that, the base station uses the first cooperation set and the second cooperation set to coordinate the first user with the second user. Pairing, specifically includes,
根据所述第一用户与第二用户共有的协作集,将所述第一用户与 所述第二用户进行配对; Pair the first user with the second user according to the collaboration set shared by the first user and the second user;
所述共有的协作集是所述第一协作集与所述第二协作集的并集。 The shared cooperation set is the union of the first cooperation set and the second cooperation set.
16、 根据权利要求 15所述的方法, 其特征在于, 所述基站利用所 述第一协作集与所述第二协作集,将所述第一用户与所述第二用户进 行配对, 具体包括,
获取所述第一用户在所述共有的协作集内的第一SINR; 16. The method according to claim 15, wherein the base station uses the first cooperation set and the second cooperation set to pair the first user with the second user, specifically including: , Obtain the first SINR of the first user in the shared collaboration set;
获取所述第二用户在所述共有的协作集内的第二 SINR; Obtain the second SINR of the second user in the shared collaboration set;
基于所述第一 SINR第二 SINR, 判断所述第一用户可以与所述第 二用户配对。 Based on the first SINR and the second SINR, it is determined that the first user can be paired with the second user.
17、 根据权利要求 16所述的方法, 其特征在于, 所述获取所述第 一用户在所述共有的协作集内的第一 SINR, 具体包括: 17. The method according to claim 16, wherein the obtaining the first SINR of the first user in the shared collaboration set specifically includes:
利用所述共有的协作集内的信道信息, 计算得到所述第一 SINR; 所述获取所述第二用户在所述共有的协作集内的第二 SINR, 具 体包括: The first SINR is calculated using the channel information in the shared cooperative set; the obtaining the second SINR of the second user in the shared cooperative set specifically includes:
利用所述共有的协作集内的信道信息, 计算得到所述第二 SINR。 The second SINR is calculated using the channel information in the common cooperative set.
18、 根据权利要求 17所述的方法, 其特征在于, 所述获取所述第 一用户在所述共有的协作集内的第一 SINR, 具体包括, 18. The method according to claim 17, wherein the obtaining the first SINR of the first user in the shared collaboration set specifically includes:
利用所述第一用户的服务小区内的信道信息,获取所述第一用户 的服务小区的 SINR , 利用所述第一用户在所述共有的协作集中获得 的 SINR增益对所述第一用户的服务小区的 SINR进行修正, 得到所述 第一 SINR; Utilize the channel information in the first user's serving cell to obtain the SINR of the first user's serving cell, and use the SINR gain obtained by the first user in the shared coordination set to calculate the SINR of the first user's serving cell. The SINR of the serving cell is modified to obtain the first SINR;
所述获取所述第一用户在所述共有的协作集内的第一 SINR, 具 体包括, The obtaining the first SINR of the first user in the shared collaboration set specifically includes:
利用所述第二用户的服务小区内的信道信息,获取所述第二用户 的服务小区的 SINR , 利用所述第二用户在所述共有的协作集中获得 的 SINR增益对所述第一服务小区 SINR进行修正, 得到所述第二 SINR。
Utilize the channel information in the serving cell of the second user to obtain the SINR of the serving cell of the second user, and use the SINR gain obtained by the second user in the shared cooperation set to calculate the SINR of the first serving cell. The SINR is modified to obtain the second SINR.
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