CN106385703B - method for selecting transmitting point and allocating resources and related equipment - Google Patents
method for selecting transmitting point and allocating resources and related equipment Download PDFInfo
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- CN106385703B CN106385703B CN201610785570.5A CN201610785570A CN106385703B CN 106385703 B CN106385703 B CN 106385703B CN 201610785570 A CN201610785570 A CN 201610785570A CN 106385703 B CN106385703 B CN 106385703B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/02—Access restriction performed under specific conditions
- H04W48/06—Access restriction performed under specific conditions based on traffic conditions
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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
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/20—Selecting an access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/27—Control channels or signalling for resource management between access points
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
Abstract
The embodiment of the application discloses a method for selecting an emission point and allocating resources and related equipment, which are used for reducing the complexity of realizing the selection of the emission point and the allocation of the resources and further improving the execution efficiency. The method in the embodiment of the application comprises the following steps: the serving cell determines a target cell for sending data to be sent for a terminal accessed to the serving cell; the serving cell sends a notification message and the data to be transmitted to the target cell, so that the target cell allocates resources for bearing the data to be transmitted to the terminal, and the notification message is used for indicating the target cell to allocate resources to the terminal.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a method for selecting an emitter point and allocating resources and related devices.
Background
With the development of communication services and the increase of demand, future wireless communication systems need to meet the requirements of high speed and large capacity, and the existing communication systems have several problems so that the performance goals of high speed and large capacity are difficult to achieve. Among them, the inter-cell interference is a serious problem. In the prior art, users located at the edge of a cell are easily interfered by adjacent cells, so that the throughput of the users at the edge of the cell is lower than that of the users at the center of the cell. A Dynamic transmission Point Selection (DPS) technique is introduced into a Long Term Evolution (Long Term Evolution, LTE) commercial system, that is, a user may also allocate resources for other cells (called cooperative cells of the user) outside a serving cell to transmit data of the user.
At present, in the aspect of selecting and allocating resources at a dynamic transmission point, a serving cell generally selects a target cell for sending data to be transmitted for a terminal according to priorities of the terminal in the serving cell and a cooperative cell and priorities of other terminals in the two cells; then, the serving cell allocates the resource of the target cell to the terminal, and then the serving cell and the target cell can allocate the remaining resource to other users.
Disclosure of Invention
the embodiment of the application provides a method for selecting an emission point and allocating resources and related equipment, which are used for reducing the implementation complexity of the selection of the emission point and the allocation of the resources and further improving the execution efficiency.
in a first aspect, an embodiment of the present application provides a method for selecting an emission point and allocating resources, including: after the serving cell determines a target cell for sending the data to be transmitted for the terminal accessing the serving cell, the serving cell sends a notification message and the data to be transmitted to the target cell, so that the target cell can allocate resources for bearing the data to be transmitted for the terminal according to the notification message.
In practical applications, the serving cell may send the notification message and the data to be transmitted to the target cell as one message, or may send the notification message and the data to be transmitted to the target cell as independent messages, respectively. Meanwhile, if the serving cell and the target cell are the same cell, after the serving cell determines that the serving cell is the target cell, the serving cell may directly allocate resources for carrying the to-be-transmitted data to the terminal according to a comparison relationship between the priority of the terminal and the priorities of other terminals in the serving cell.
in practical application, if a plurality of terminals access a plurality of serving cells respectively, the serving cells determine target cells for the terminals in a distributed parallel processing manner.
in the technical solution provided by the implementation of the present application, the serving cell and the target cell undertake an implementation action of the serving cell in the prior art, that is, the serving cell performs selection of a target cell (transmission point), and then the target cell allocates resources to the terminal.
The serving cell determining the target cell for the terminal to send the data to be transmitted may adopt the following manner: the serving cell receives first Channel State Information (CSI) of the serving cell and second CSI of a cooperative cell of the terminal, wherein the first CSI is reported by the terminal; then the serving cell acquires first load information of the serving cell and second load information of the cooperative cell; secondly, the serving cell determines a first throughput of the terminal in the serving cell according to the first CSI of the serving cell and the first load information of the serving cell, and determines a second throughput of the terminal in the cooperating cell according to the second CSI of the cooperating cell and the second load information of the cooperating cell; secondly, the serving cell may compare a first throughput acquired by the terminal in the serving cell with a second throughput acquired by the terminal in the cooperating cell, and then the serving cell determines a maximum throughput from the first throughput and the second throughput; and finally, the serving cell determines the cell corresponding to the maximum throughput as the target cell.
In this embodiment of the application, the number of the cooperative cells of the terminal may include multiple, specific numbers, which are not limited herein.
In the embodiment of the application, the serving cell selects the cell in which the terminal can obtain the maximum throughput as the target cell for sending the data to be transmitted to the terminal, which is favorable for improving the transmission efficiency of the data.
Based on the above scheme, the specific way for the serving cell to obtain the first load information and the second load information is as follows: the serving cell acquires the first load information of the serving cell, and receives the second load information acquired by the cooperative cell and sent by the cooperative cell.
based on the above scheme, the serving cell may further query, according to the first CSI of the serving cell, a mapping table stored in the serving cell to obtain a first spectral efficiency of the serving cell, and query, according to the second CSI of the cooperative cell, the mapping table stored in the serving cell to obtain a second spectral efficiency of the cooperative cell; and then the serving cell obtains a first throughput obtained by the terminal in the serving cell according to the first spectrum efficiency and the first load information by using a first relational expression, and obtains a second throughput obtained by the terminal in the cooperative cell according to the second spectrum efficiency and the second load information by using the first relational expression.
In the technical solution provided in the embodiment of the present application, the serving cell directly queries the spectrum efficiency of the serving cell and the spectrum efficiency of the cooperative cell according to the mapping table, which is beneficial to reducing the computational complexity of the serving cell.
Based on the above scheme, the first relation is as follows:
Throughput is the spectral efficiency/load information.
Based on the above scheme, the first CSI includes a Channel Quality Indicator (CQI), and the second CSI includes a CQI.
In practical applications, the first CSI may also include a Modulation and Coding Scheme (MCS), specifically, information carried in the CSI is not limited herein, as long as the spectral efficiency of a cell can be obtained according to the CSI.
Based on the above scheme, the first load information is represented by the number of users to be scheduled in the serving cell or an average value of priorities of users scheduled in the serving cell, and the second load information is represented by the number of users to be scheduled in the cooperative cell or an average value of priorities of users scheduled in the cooperative cell.
in a second aspect, an embodiment of the present application provides a method for selecting an emission point and allocating resources, including: after a target cell which sends data to be transmitted for a terminal receives a notification message which is sent by a service cell of the terminal and used for indicating the target cell to allocate resources for the terminal and the data to be transmitted, the target cell allocates resources for carrying the data to be transmitted for the terminal, and the target cell is different from the service cell.
in the solution provided in the embodiment of the present application, the target cell allocates resources to the terminal itself, and the reserved resources of the serving cell or the cooperative cell allocated to the terminal by the serving cell are no longer reserved for the terminal, so that the utilization efficiency of the resources can be effectively improved.
In a possible design, the target cell allocates the resource for carrying the to-be-transmitted data to the terminal according to a comparison relationship between the priority of the terminal and the priorities of other terminals in the target cell.
In the technical solution provided in the embodiment of the present application, the target cell performs resource allocation in a sequence according to the priority of the terminal and the priorities of other terminals in the target cell, so that the resource utilization efficiency of the target cell can be effectively improved.
In a third aspect, an embodiment of the present application provides a serving cell, where the serving cell has a function of implementing the serving cell in the foregoing method. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the functions described above.
In one possible implementation, the serving cell includes:
The processing module is used for determining a target cell for sending data to be sent for a terminal accessed to the service cell;
a sending module, configured to send a notification message and the to-be-transmitted data to the target cell determined by the processing module, so that the target cell allocates, to the terminal, a resource for carrying the to-be-transmitted data, where the notification message is used to instruct the target cell to allocate the resource to the terminal.
In another possible implementation, the serving cell includes:
A transceiver, a processor, and a bus;
The transceiver is connected with the processor through the bus;
The processor executes the following steps: determining a target cell for sending data to be sent for a terminal accessed to the service cell;
the transceiver executes the following steps: and sending a notification message and data to be transmitted to the target cell, so that the target cell allocates resources for carrying the data to be sent to the terminal, and the notification message is used for indicating the target cell to allocate resources to the terminal.
In a fourth aspect, the present application provides a target cell, where the target cell has a function of implementing the target cell in the foregoing method. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the functions described above.
in one possible implementation, the target cell includes:
a receiving module, configured to receive a notification message sent by a serving cell and data to be transmitted by a terminal, where the serving cell is the serving cell of the terminal, the target cell is used to send the data to be transmitted to the terminal, the notification message is used to indicate that the target cell allocates resources for the terminal, and the target cell and the serving cell are different cells;
and the processing module is used for allocating resources for bearing the data to be transmitted for the terminal.
in another possible implementation, the target cell includes:
a transceiver, a processor, and a bus;
the transceiver is connected with the processor through the bus;
The transceiver executes the following steps: receiving a notification message sent by a serving cell and data to be transmitted of a terminal, wherein the serving cell is the serving cell of the terminal, the target cell is used for sending the data to be transmitted for the terminal, the notification message is used for indicating the target cell to allocate resources for the terminal, and the target cell and the serving cell are different cells;
The processor executes the following steps: and allocating resources for bearing the data to be transmitted to the terminal.
In a fifth aspect, an embodiment of the present application provides a computer storage medium having program codes stored therein, where the program codes are used to instruct to execute the method of the first aspect or the second aspect.
In a sixth aspect, an embodiment of the present application provides an emission point selection and resource allocation system, where the emission point selection and resource allocation system includes: serving cell, target cell and terminal. The serving cell is configured to determine, for the terminal, a target cell that can send data to be transmitted for the terminal, and send, to the target cell, a notification message for instructing the target cell to allocate resources to the terminal; after the target cell receives the notification message, the target cell allocates resources for carrying the to-be-transmitted data to the terminal.
according to the technical scheme, the embodiment of the application has the following advantages: the serving cell of the terminal is only used for determining the target cell, and the target cell allocates resources for carrying the data to be transmitted to the terminal. Therefore, the service cell and the target cell jointly bear the work originally completed by the service cell, so that the implementation complexity of the selection of the transmitting points and the resource allocation is reduced, and the execution efficiency is improved.
drawings
FIG. 1 is a diagram illustrating the DPS architecture in an embodiment of the present application;
FIG. 2 is a diagram of an embodiment of a method for selecting a transmission point and allocating resources according to an embodiment of the present application;
fig. 3 is a schematic diagram of an embodiment of a serving cell in an embodiment of the present application;
Fig. 4 is a schematic diagram of another embodiment of a serving cell in the embodiment of the present application;
Fig. 5 is a schematic diagram of an embodiment of a target cell in an embodiment of the present application;
Fig. 6 is a schematic diagram of another embodiment of a target cell in the embodiment of the present application.
Detailed Description
The embodiment of the application provides a method for selecting an emission point and allocating resources and related equipment, which are used for reducing the implementation complexity of the selection of the emission point and the allocation of the resources and further improving the execution efficiency.
in order to make the embodiments of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
the terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
With the development of communication services and the increase of demand, future wireless communication systems need to meet the requirements of high speed and large capacity, and the existing communication systems have several problems so that the performance goals of high speed and large capacity are difficult to achieve. Among them, the inter-cell interference is a serious problem. In the prior art, a terminal located at a cell edge is easily interfered by an adjacent cell, so that the throughput of the cell edge terminal is lower than that of a cell center terminal. The LTE commercial system introduces DPS technology, i.e. the terminal may also allocate resources for the cooperating cells to transmit the user's data.
Referring to the diagram of the DPS technology architecture shown in fig. 1, the DPS technology architecture includes a terminal, a serving cell, and a cooperating cell. The terminal serves as an edge user of a corresponding serving cell, and the terminal can have a plurality of cooperative cells. The serving cell generally selects a target cell for the terminal to send data to be transmitted according to the priority of the terminal in the serving cell and the cooperative cell and the priority of other terminals in the two cells; then, the serving cell allocates the resource of the target cell to the terminal, and then the serving cell and the target cell can allocate the remaining resource to other users.
In order to solve the problem, the following technical scheme is proposed in the embodiment of the application: after the serving cell determines a target cell for sending the data to be transmitted to the terminal, the serving cell notifies the target cell to allocate resources for carrying the data to be transmitted to the terminal.
in the embodiment of the present application, the execution subject selected by the target cell (transmission point) is the serving cell, the execution subject in actual operation is the base station corresponding to the serving cell, the execution subject allocating resources to the terminal is the target cell, and the execution subject in actual operation is the base station corresponding to the target cell. Meanwhile, the serving cell and the target cell may correspond to different base stations respectively, or may correspond to the same base station, and a specific manner is not limited herein.
A terminal as referred to in embodiments of the present application may refer to a device providing voice and/or data connectivity to a user, a handheld device having wireless connectivity, or other processing device connected to a wireless modem. A wireless terminal, which may be a mobile terminal such as a mobile telephone (or "cellular" telephone) and a computer having a mobile terminal, e.g., a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device, may communicate with one or more core networks via a Radio Access Network (RAN), and may exchange language and/or data with the RAN. For example, devices such as Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs) are known. A wireless Terminal may also be referred to as a system, a Subscriber Unit (Subscriber Unit), a Subscriber Station (Subscriber Station), a Mobile Station (Mobile), a Remote Station (Remote Station), an Access Point (Access Point), a Remote Terminal (Remote Terminal), an Access Terminal (Access Terminal), a User Terminal (User Terminal), a User Agent (User Agent), a User Device (User Device), or a User Equipment (User Equipment).
Fig. 2 is a method for selecting an emission point and allocating resources according to an embodiment of the present disclosure. In the transmission point selection and resource allocation method, the terminal, the serving cell and the cooperating cell have the same functions as those of the terminal, the serving cell and the cooperating cell in fig. 1. Specifically, the method comprises the following steps:
201. the serving cell is determined as a target cell for the terminal to send data to be transmitted.
The cell accessed by the terminal is used as a serving cell, and before the serving cell sends the data to be transmitted of the terminal, the serving cell can also select a target cell for sending the data to be transmitted from the serving cell and the cooperative cell of the terminal for the terminal.
In this embodiment, the serving cell may select the target cell for the terminal according to the throughput that the terminal may acquire in each cell, which is specifically as follows: the terminal obtains the CSI of the serving cell through measurement, and simultaneously obtains the CSI of the cooperative cell through measurement; and then the terminal sends the CSI of the serving cell and the CSI of the cooperative cell to the serving cell. Meanwhile, the serving cell can also acquire the load information of the serving cell and the load information of the terminal cooperation cell; then, the serving cell obtains the throughput that the terminal may obtain in the serving cell according to the CSI of the serving cell and the load information of the serving cell, and the serving cell obtains the throughput that the terminal may obtain in the cooperating cell according to the CSI of the cooperating cell and the load information of the cooperating cell. And finally, the service cell sorts the throughput which the terminal possibly acquires in the service cell and the throughput which the terminal possibly acquires in the cooperative cell, and the cell with the maximum throughput is selected as the target cell. The load information of the serving cell may be represented by the number of users to be scheduled in the serving cell or an average of priorities of users scheduled in the serving cell, and the load information of the cooperative cell may be represented by the number of users to be scheduled in the cooperative cell or an average of priorities of users scheduled in the cooperative cell. Based on the above method, both the CSI of the serving cell and the CSI of the cooperating cell acquired by the serving cell include CQI or MCS, and each cell may pre-store a mapping table of CQI and spectral efficiency. The specific way to obtain the throughput of the serving cell at this time may be as follows: the serving cell may first find a mapping table according to the CQI of the serving cell to obtain the spectral efficiency of the serving cell, find the mapping table according to the CQI of the cooperating cell to obtain the spectral efficiency of the cooperating cell, and then the serving cell may find the mapping table according to the relational expression
The throughput is obtained by the spectrum efficiency/load information, and the throughput of the serving cell and the throughput of the cooperative cell are obtained.
In this embodiment, if the terminal has three cooperative cells, the load information of the serving cell and the load information of the cooperative cells are both expressed by the number of users to be scheduled in the cell. If the load information of the serving cell acquired by the serving cell is 2, the load information of each cooperative cell of the terminal is 4 for the cooperative cell a, 3 for the cooperative cell B, and 4 for the cooperative cell C, and the frequency spectrum efficiency of the serving cell inquired by the serving cell through a mapping table of CQI and frequency spectrum efficiency is 6 bits per second per hertz, the frequency spectrum efficiency of each cooperation cell is respectively 8 bits per second per hertz, the cooperation cell B is 9 bits per second per hertz, the cooperation cell C is 16 bits per second per hertz, the throughput that the terminal may obtain in the serving cell according to the formula is 3, the throughput that the terminal may acquire in the cooperative cell a is 2, the throughput that the terminal may acquire in the cooperative cell B is 3, and the throughput that the terminal may acquire in the cooperative cell C is 4. Then, the serving cell determines that the throughput of the cooperative cell C is 4 as the maximum throughput from the four throughputs, and finally, the serving cell determines that the cooperative cell C is the target cell.
In practical applications, there are various methods for the serving cell to acquire the throughput, and the specific method is not limited herein, and meanwhile, the serving cell may also use the priority of the terminal between the serving cell and each cooperative cell as a criterion for selecting a target cell, and the specific method for selecting a target cell is not limited herein as long as a target cell meeting the criterion can be selected.
202. The serving cell sends a notification message and pending data to the target cell.
After determining a target cell which sends data to be transmitted for the terminal, the serving cell sends a notification message and the data to be transmitted to the target cell, and notifies the target cell that resources need to be allocated for the terminal.
in this embodiment, the notification message and the data to be transmitted may be sent to the target cell in one message, or may be sent to the target cell as two independent messages, respectively.
203. And the target cell allocates resources for carrying the data to be transmitted for the terminal.
After the target cell obtains the resource allocation of the terminal to participate in the target cell, the target cell performs priority ordering on the terminal and the original terminal of the target cell, and performs resource allocation on all terminals of the target cell according to the priority order.
In practical application, if the target cell and the serving cell are the same cell, the serving cell may directly perform priority ranking on the terminal and the original terminal of the serving cell, and perform resource allocation on all terminals of the serving cell according to the priority ranking.
In this embodiment, in the process of completing the method for selecting the transmission point and allocating the resource, if there are a plurality of terminals accessing a plurality of serving cells respectively, there is no need to collectively and serially determine the target cells for the respective corresponding terminals among the serving cells, that is, after one serving cell determines the target cell for the terminal corresponding to the serving cell, another serving cell may determine the target cell for the terminal corresponding to the serving cell. When determining the target cell for sending the data to be transmitted for the terminal corresponding to each serving cell, each serving cell may perform distributed parallel processing, that is, when one serving cell determines the target cell for the terminal corresponding to the serving cell, another serving cell may also determine the target cell for the terminal corresponding to the serving cell.
in this embodiment, after determining the target cell of the terminal, the serving cell sends a notification message to the target cell, so that the target cell allocates resources to the terminal according to the priority of the terminal, that is, both the serving cell and the target cell undertake one task of the serving cell in the prior art, thereby effectively reducing implementation complexity of transmission point selection and resource allocation, and further improving execution efficiency of the serving cell and the target cell.
The foregoing describes a method for selecting a transmission point and allocating resources in the embodiment of the present application, and a serving cell and a target cell in the embodiment of the present application are described below.
Referring to fig. 3, an embodiment of a serving cell in the embodiment of the present application includes: a receiving module 301, a processing module 302 and a sending module 303.
A processing module 302, configured to determine a target cell for sending data to be sent to a terminal;
A sending module 303, configured to send a notification message and the to-be-transmitted data to the target cell determined by the processing module, so that the target cell allocates, to the terminal, a resource for carrying the to-be-transmitted data, where the notification message is used to instruct the target cell to allocate the resource to the terminal.
With reference to the foregoing embodiment, the serving cell further includes a receiving module 301, where the receiving module 301 is configured to receive the first CSI of the serving cell and the second CSI of the cooperative cell of the terminal, which are reported by the terminal; acquiring first load information and second load information, wherein the first load information is the load information of the service cell, and the second load information is the load information of the cooperative cell;
The processing module 302 is further configured to determine a first throughput obtained by the terminal in the serving cell according to the first CSI and the first load information, and determine a second throughput obtained by the terminal in the cooperating cell according to the second CSI and the second load information; determining a maximum throughput from the first throughput and the second throughput; and determining the cell corresponding to the maximum throughput as the target cell.
With reference to the foregoing embodiment, the receiving module 301 is further configured to obtain the first load information of itself, and receive the second load information sent by the cooperative cell.
With reference to the foregoing embodiment, the processing module 302 is further configured to obtain a first spectral efficiency of the serving cell according to the first CSI query mapping table, and obtain a second spectral efficiency of the cooperative cell according to the second CSI query mapping table; and obtaining a first throughput of the terminal in the serving cell according to the first spectrum efficiency and the first load information by using a first relation, and obtaining a second throughput of the terminal in the cooperative cell according to the second spectrum efficiency and the second load information by using the first relation.
With reference to the foregoing embodiments, the mapping table is a mapping table that is pre-stored by the serving cell and can be queried according to the CQI.
With reference to the above embodiment, the first relation is:
Throughput is the spectral efficiency/load information.
With reference to the foregoing embodiment, the first load information is represented by the number of users to be scheduled in the serving cell or an average of priorities of users scheduled in the serving cell, and the second load information is represented by the number of users to be scheduled in the cooperative cell or an average of priorities of users scheduled in the cooperative cell.
Further, the serving cell in fig. 3 may also be used to perform any steps performed by the serving cell in fig. 1 or fig. 2, and implement any functions that the serving cell in fig. 1 or fig. 2 can implement.
in this embodiment, after the processing module 302 determines the target cell of the terminal, the sending module 303 sends a notification message and the data to be transmitted to the target cell, so that the target cell allocates resources to the terminal according to the priority of the terminal, that is, both the serving cell and the target cell undertake a task done by the serving cell in the prior art, thereby effectively reducing implementation complexity of transmission point selection and resource allocation, and further improving execution efficiency of the serving cell and the target cell.
Referring to fig. 4, another embodiment of the serving cell in the embodiment of the present application is as follows: transceiver 401, processor 402, bus 403;
the transceiver 401 and the processor 402 are connected to each other by a bus 403;
The bus 403 may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 4, but this does not indicate only one bus or one type of bus.
The processor 402 may be a Central Processing Unit (CPU), a Network Processor (NP), or a combination of a CPU and an NP.
The processor 402 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a Programmable Logic Device (PLD), or a combination thereof. The PLD may be a Complex Programmable Logic Device (CPLD), a field-programmable gate array (FPGA), a General Array Logic (GAL), or any combination thereof.
referring to fig. 4, the serving cell may further include a memory 404; the memory 404 is used to store a mapping table.
the memory 404 may include a volatile memory (volatile memory), such as a random-access memory (RAM); the memory may also include a non-volatile memory (non-volatile memory), such as a flash memory (flash memory), a Hard Disk Drive (HDD) or a solid-state drive (SSD); the memory 404 may also comprise a combination of memories of the kind described above.
Optionally, the memory 404 may also be used to store program instructions, and the processor 402 may call the program instructions stored in the memory 404 to perform one or more steps in the embodiment shown in fig. 2, or in an alternative embodiment thereof, to implement the functions of the serving cell behavior in the above-described method.
The processor 402, using step 201 in the above embodiment;
The transceiver 401 includes a radio frequency module and an antenna, the radio frequency module can be connected with the processor 402 through the bus 403; the rf module and the antenna perform step 202 in the above embodiments.
In this embodiment, after the processor 402 determines the target cell of the terminal, the transceiver 401 sends a notification message to the target cell, so that the target cell allocates resources to the terminal according to the priority of the terminal, that is, both the serving cell and the target cell undertake the task of the serving cell in the prior art, thereby effectively reducing the implementation complexity of transmission point selection and resource allocation, and further improving the execution efficiency of the serving cell and the target cell.
referring to fig. 5, an embodiment of a target cell in the embodiment of the present application is as follows: a receiving module 501 and a processing module 502.
The receiving module 501 is configured to receive a notification message sent by a serving cell and data to be transmitted by a terminal, where the serving cell is a serving cell of the terminal, the target cell is configured to send the data to be transmitted to the terminal, the notification message is used to indicate that the target cell allocates resources for the terminal, and the target cell and the serving cell are not the same cell;
The processing module 502 is configured to allocate a resource for carrying the to-be-transmitted data to the terminal.
With reference to the foregoing embodiment, the processing module 502 is further configured to allocate a resource for carrying the to-be-transmitted data to the terminal according to a comparison relationship between the priority of the terminal and the priorities of other terminals.
In this embodiment, after the receiving module 501 receives the notification message sent by the serving cell, the processing module 502 allocates resources for carrying the to-be-transmitted data to the terminal according to the priority of the terminal, so that the utilization rate of the resources is effectively improved.
Referring to fig. 6, another embodiment of the target cell in the embodiment of the present application is as follows: a transceiver 601 and a processor 602; the transceiver 601 and the processor 602 are connected to each other by a bus 603;
The bus 603 may be PCI or EISA, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 6, but this is not intended to represent only one bus or type of bus.
The processor 602 may be a CPU, an NP, or a combination of a CPU and an NP.
the processor 602 may further include a hardware chip. The hardware chip may be an ASIC, PLD, or a combination thereof. The PLD may be a CPLD, an FPGA, a GAL, or any combination thereof.
Referring to fig. 6, the target cell may further include a memory 604; the memory 604 may include volatile memory (RAM); the memory may also include a non-volatile memory (non-volatile), such as a flash memory (HDD) or an SSD; the memory 604 may also comprise a combination of the above types of memory.
optionally, the memory 604 may also be used to store program instructions, and the processor 602 calls the program instructions stored in the memory 604 to execute one or more steps in the embodiment shown in fig. 2, or in an alternative embodiment thereof, to implement the functions of the target cell behavior in the above-described method.
the processor 602 executes step 203 in the above embodiments.
the transceiver 601 includes a radio frequency module and an antenna, the radio frequency module can be connected with the processor 602 through the bus 603; the radio frequency module and the antenna perform the action of receiving the notification message and the pending data of the terminal in step 202 in the above embodiment.
in this embodiment, after the transceiver 601 receives the notification message sent by the serving cell, the processor 602 allocates resources for carrying the to-be-transmitted data to the terminal according to the priority of the terminal, so that the utilization rate of the resources is effectively improved.
it is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
the above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (22)
1. a method for transmission point selection and resource allocation, comprising:
The serving cell determines a target cell for sending data to be sent for a terminal accessed to the serving cell;
The serving cell sends a notification message and the data to be sent to the target cell, so that the target cell allocates resources for carrying the data to be sent to the terminal, the notification message is used for indicating the target cell to allocate resources to the terminal, and the serving cell does not reserve resources for the terminal in the serving cell or a cooperative cell any more.
2. The method of claim 1, wherein the determining, by the serving cell, a target cell for the terminal to send data to be sent comprises:
the serving cell receives first Channel State Information (CSI) of the serving cell and second CSI of a cooperative cell of the terminal, which are reported by the terminal;
The serving cell acquires first load information and second load information, wherein the first load information is the load information of the serving cell, and the second load information is the load information of the cooperative cell;
the serving cell determines a first throughput obtained by the terminal in the serving cell according to the first CSI and the first load information, and determines a second throughput obtained by the terminal in the cooperative cell according to the second CSI and the second load information;
The serving cell determining a maximum throughput from the first throughput and the second throughput;
and the serving cell determines the cell corresponding to the maximum throughput as the target cell.
3. The method of claim 2, wherein the serving cell obtaining the first load information and the second load information comprises:
The serving cell acquires the first load information of the serving cell and receives the second load information sent by the cooperative cell.
4. The method of claim 2, wherein the serving cell determines a first throughput obtained by the terminal in the serving cell according to the first CSI and the first load information, and wherein determining a second throughput obtained by the terminal in the cooperating cell according to the second CSI and the second load information comprises:
The serving cell obtains a first spectrum efficiency of the serving cell according to the first CSI query mapping table, and obtains a second spectrum efficiency of the cooperative cell according to the second CSI query mapping table;
And the serving cell obtains a first throughput of the serving cell according to the first spectrum efficiency and the first load information by using a first relational expression, and obtains a second throughput of the cooperative cell according to the second spectrum efficiency and the second load information by using the first relational expression.
5. the method of claim 4, wherein the mapping table is a pre-stored mapping table that can be queried to obtain spectral efficiency according to a Channel Quality Indicator (CQI) of the serving cell.
6. The method of claim 4, wherein the first relationship is:
Throughput is the spectral efficiency/load information.
7. The method according to any of claims 2-6, wherein the first CSI comprises a Channel Quality Indication (CQI) and the second CSI comprises a CQI.
8. The method according to any of claims 2 to 6, wherein the first load information is represented by the number of users to be scheduled in the serving cell or an average of priorities of scheduled users in the serving cell, and the second load information is represented by the number of users to be scheduled in the cooperative cell or an average of priorities of scheduled users in the cooperative cell.
9. a method for selecting transmission points and allocating resources, comprising:
a target cell receives a notification message sent by a serving cell and data to be transmitted of a terminal, wherein the serving cell is the serving cell of the terminal, the target cell is used for sending the data to be transmitted to the terminal, the notification message is used for indicating the target cell to allocate resources to the terminal, and the target cell and the serving cell are not the same cell;
and the target cell allocates resources for bearing the data to be transmitted for the terminal, and the serving cell does not reserve resources for the terminal in the serving cell or the cooperative cell any more.
10. The method of claim 9, wherein the allocating, by the target cell, the resource for carrying the to-be-transmitted data for the terminal comprises:
And the target cell allocates resources for bearing the data to be transmitted for the terminal according to the comparison relation between the priority of the terminal and the priorities of other terminals of the target cell.
11. A serving cell, comprising:
The processing module is used for determining a target cell for sending data to be sent for a terminal accessed to the service cell;
A sending module, configured to send a notification message and the to-be-sent data to the target cell determined by the processing module, so that the target cell allocates a resource for carrying the to-be-sent data to the terminal, where the notification message is used to indicate that the target cell allocates the resource to the terminal;
and the serving cell does not reserve resources for the terminal in the serving cell or the cooperative cell any more.
12. the serving cell according to claim 11, wherein the serving cell further includes a receiving module, and the receiving module is configured to receive first CSI of the serving cell and second CSI of a cooperating cell of the terminal, which are reported by the terminal; acquiring first load information and second load information, wherein the first load information is the load information of the service cell, and the second load information is the load information of the cooperative cell;
The processing module is further configured to determine, according to the first CSI and the first load information, a first throughput that the terminal acquires in the serving cell, and determine, according to the second CSI and the second load information, a second throughput that the terminal acquires in the cooperating cell; determining a maximum throughput from the first throughput and the second throughput; and determining the cell corresponding to the maximum throughput as the target cell.
13. The serving cell according to claim 12, wherein the receiving module is further configured to obtain the first load information of itself and receive the second load information sent by the cooperative cell.
14. the serving cell of claim 12, wherein the processing module is further configured to obtain a first spectral efficiency of the serving cell according to the first CSI query mapping table, and obtain a second spectral efficiency of the cooperative cell according to the second CSI query mapping table; and obtaining a first throughput obtained by the terminal in the serving cell according to the first spectrum efficiency and the first load information by using a first relation, and obtaining a second throughput obtained by the terminal in the cooperative cell according to the second spectrum efficiency and the second load information by using the first relation.
15. the serving cell of claim 14, wherein the mapping table is a mapping table that is pre-stored by the serving cell and can be queried according to a Channel Quality Indicator (CQI) to a spectrum efficiency.
16. The serving cell of claim 14, wherein the first relation is:
Throughput is the spectral efficiency/load information.
17. The serving cell of any of claims 12 to 16, wherein the first CSI comprises a channel quality indication, CQI, and wherein the second CSI comprises a CQI.
18. the serving cell of any one of claims 12 to 16, wherein the first load information is represented by a number of users to be scheduled in the serving cell or an average of priorities of scheduled users in the serving cell, and wherein the second load information is represented by a number of users to be scheduled in the cooperative cell or an average of priorities of scheduled users in the cooperative cell.
19. A target cell, comprising:
A receiving module, configured to receive a notification message sent by a serving cell and data to be transmitted by a terminal, where the serving cell is the serving cell of the terminal, the target cell is used to send the data to be transmitted to the terminal, and the notification message is used to instruct the target cell to allocate resources to the terminal;
the processing module is used for allocating resources for bearing the data to be transmitted to the terminal;
and the serving cell does not reserve resources for the terminal in the serving cell or the cooperative cell any more.
20. the target cell of claim 19, wherein the processing module is further configured to allocate, to the terminal, a resource for carrying the to-be-transmitted data according to a comparison relationship between the priority of the terminal and the priorities of other terminals.
21. A serving cell, comprising:
a transceiver, a processor, and a bus;
The transceiver is connected with the processor through the bus;
The processor executes the following steps: determining a target cell for sending data to be sent for a terminal accessed to the service cell;
The transceiver, executes the steps of: sending a notification message and the data to be sent to the target cell, so that the target cell allocates resources for carrying the data to be sent to the terminal, and the notification message is used for indicating the target cell to allocate resources to the terminal;
And the serving cell does not reserve resources for the terminal in the serving cell or the cooperative cell any more.
22. A target cell, comprising:
a transceiver, a processor, and a bus;
The transceiver is connected with the processor through the bus;
The transceiver, executes the steps of: receiving a notification message sent by a serving cell and data to be transmitted of a terminal, wherein the serving cell is the serving cell of the terminal, the target cell is used for sending the data to be transmitted for the terminal, the notification message is used for indicating the target cell to allocate resources for the terminal, and the target cell and the serving cell are not the same cell;
the processor executes the following steps: allocating resources for bearing the data to be transmitted to the terminal;
And the serving cell does not reserve resources for the terminal in the serving cell or the cooperative cell any more.
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