CN112532365A - Multicast user scheduling selection method, device, system and storage medium - Google Patents
Multicast user scheduling selection method, device, system and storage medium Download PDFInfo
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Abstract
The embodiment of the invention discloses a method, a device, a system and a storage medium for scheduling and selecting multicast users. The method comprises the following steps: a base station broadcasts a first pilot signal to a unicast user and a plurality of multicast users; the unicast user broadcasts a second pilot signal to the multicast user, wherein the second pilot signal carries channel information when the unicast user receives the first pilot signal; the multicast user confirms the decoding state of the sending signals of the unicast user and other multicast users and the decoding state of the sending signals of the unicast user to the multicast user according to the receiving and sending processes of the first pilot signal and the second pilot signal; the multicast user broadcasts the state classification to other multicast users according to the decoding state; the multicast user calculates the channel gain in the state classification receiving process; and the multicast user confirms the relay user according to a countdown strategy, and the countdown strategy confirms according to the classification of the decoding state and the channel gain in the state classification receiving process. The scheme improves the multi-user detection and signal transmission effects.
Description
Technical Field
The embodiment of the invention relates to the technical field of networks, in particular to a multicast user scheduling selection method, a device, equipment and a storage medium.
Background
Internet of Things (IoT) is regarded as a major development and transformation opportunity in the information field, and is expected to bring revolutionary transformation, which will have all-round impact in various fields such as industry, agriculture, property, city management, security and fire fighting in a relatively common view. But technically, the internet of things not only changes the main body of data transmission, but also differs significantly from the conventional communication. For example, a feature of the large-scale internet of things is that a large number of users sporadically transmit very small packets, unlike conventional cellular communications.
The inventor finds that the complexity of a traditional user detection scheme is too high to use due to access of a large number of users in the process of applying a large-scale internet of things, different transmission strategies need to be adopted during signal transmission due to the distributed complexity of a plurality of users in the large-scale internet of things, and a single multi-user detection and transmission strategy cannot meet the data transmission requirements under all specific conditions.
Disclosure of Invention
The invention provides a method, a device, equipment and a storage medium for scheduling and selecting multicast users, which aim to solve the technical problem that the existing single multi-user detection and signal transmission strategies cannot meet the data transmission requirements under certain specific user distribution in the prior art.
In a first aspect, an embodiment of the present invention provides a multicast user scheduling selection method, including:
a base station broadcasts a first pilot signal to a unicast user and a plurality of multicast users;
the unicast user broadcasts a second pilot signal to the multicast user, wherein the second pilot signal carries channel information when the unicast user receives the first pilot signal;
the multicast user confirms the decoding state of the sending signals of the unicast user and other multicast users and the decoding state of the sending signals of the unicast user to the multicast user according to the transceiving process of the first pilot signal and the second pilot signal;
the multicast user broadcasts state classification to other multicast users according to the decoding state;
the multicast user calculates the channel gain in the state classification receiving process;
and the multicast user confirms the relay user according to a countdown strategy, and the countdown strategy confirms according to the decoding state classification and the channel gain in the state classification receiving process.
Further, after the base station broadcasts the first pilot signal to a unicast user and a plurality of multicast users, the method further includes:
the unicast user calculates a first channel gain in the first pilot signal receiving process, and the multicast user calculates a second channel gain in the first pilot signal receiving process;
after the unicast user broadcasts the second pilot signal to the multicast user, the method further comprises:
the multicast subscriber calculates a third channel gain during reception of the second pilot signal.
Further, the multicast user confirms, according to the transceiving process of the first pilot signal and the second pilot signal, the decoding status of the transmission signal of the unicast user and the other multicast users, and the decoding status of the transmission signal of the unicast user and the multicast user, specifically:
and the multicast user confirms the decoding state of the transmission signals of the unicast user and other multicast users and the decoding state of the transmission signals of the multicast user by the unicast user according to the first channel gain, the second channel gain and the third channel gain.
Further, the multicast subscriber broadcasts a status classification to other multicast subscribers according to the decoding status, including:
the multicast users are divided into a first class, a second class and a third class according to the decoding states, the first class is the multicast users which decode the sending signals of the unicast users and other multicast users successfully, the second class is the multicast users which decode the sending signals of the unicast users successfully, and the third class is the multicast users which can decode the sending signals successfully by the unicast users;
the multicast user broadcasts a classification identification to other multicast users, and the classification identification is used for identifying whether the multicast user belongs to the first class or not.
Further, the multicast user confirms the relay user according to the countdown strategy, which includes:
receiving the classification identifier, calculating channel gain in the process of receiving the classification identifier for a second type multicast user which does not belong to the first type;
the third multicast user calculates the channel gain worst value in the receiving process of the classified identification, confirms the countdown duration according to the channel gain worst value, and broadcasts a relay confirmation instruction to other multicast users when the countdown is finished, wherein the relay confirmation instruction is used for confirming that the third multicast user is a relay user; and when the multicast user receives the relay confirmation instruction in the countdown process, stopping countdown.
In a second aspect, an embodiment of the present invention further provides a multicast user scheduling selection apparatus, including:
a first broadcasting unit, which is used for broadcasting a first pilot signal to a unicast user and a plurality of multicast users by a base station;
a second broadcasting unit, configured to broadcast, by the unicast user, a second pilot signal to the multicast user, where the second pilot signal carries channel information when the unicast user receives the first pilot signal;
a state confirmation unit, configured to confirm, by the multicast user, decoding states of the transmission signals of the unicast user and the other multicast users and decoding states of the transmission signals of the unicast user and the multicast users according to the transceiving processes of the first pilot signal and the second pilot signal;
the classified broadcasting unit is used for broadcasting state classification to other multicast users by the multicast user according to the decoding state;
a first calculating unit, configured to calculate, by the multicast user, a channel gain in the state classification receiving process;
and the relay confirming unit is used for confirming the relay user by the multicast user according to a countdown strategy, and the countdown strategy confirms according to the decoding state classification and the channel gain in the state classification receiving process.
Further, the apparatus further comprises:
a second calculating unit, configured to calculate, by the unicast user, a first channel gain in the first pilot signal receiving process, and calculate, by the multicast user, a second channel gain in the first pilot signal receiving process;
and the third calculating unit is used for calculating a third channel gain in the process of receiving the second pilot signal by the multicast user.
Further, the state confirmation unit is specifically configured to confirm, by the multicast user, the decoding states of the transmission signals of the unicast user and the other multicast users according to the first channel gain, the second channel gain, and the third channel gain, and confirm the decoding states of the transmission signals of the multicast user by the unicast user.
Further, the classification broadcasting unit includes:
the classification module is used for classifying the multicast users into a first class, a second class and a third class according to the decoding states, wherein the first class is the multicast users which decode the sending signals of the unicast users and other multicast users successfully, the second class is the multicast users which decode the sending signals of the unicast users successfully, and the third class is the multicast users which can decode the sending signals successfully by the unicast users;
and the identification broadcasting module is used for broadcasting the classification identification to other multicast users by the multicast user, and the classification identification is used for identifying the first type or not.
Further, the relay confirmation unit includes:
a gain calculation unit, configured to receive the second class multicast user whose classification identifier does not belong to the first class, and calculate a channel gain in the process of receiving the classification identifier;
the countdown unit is used for calculating a channel gain worst value in a classified identification receiving process by the third multicast user, confirming a countdown duration according to the channel gain worst value, broadcasting a relay confirmation instruction to other multicast users when the countdown is finished, wherein the relay confirmation instruction is used for confirming that the relay user is a relay user; and when the multicast user receives the relay confirmation instruction in the countdown process, stopping countdown.
In a third aspect, an embodiment of the present invention further provides a network system, including a base station, a unicast user, and a plurality of multicast users, where the base station, the unicast user, and the plurality of multicast users all include:
one or more processors;
a memory for storing one or more programs;
when executed by the one or more processors, cause the network system to implement the multicast user schedule selection method according to any of the first aspect.
In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the multicast user scheduling selection method according to the first aspect.
According to the multicast user scheduling selection method, the device, the network system and the storage medium, the base station broadcasts the first pilot signal to a unicast user and a plurality of multicast users; the unicast user broadcasts a second pilot signal to the multicast user, wherein the second pilot signal carries channel information when the unicast user receives the first pilot signal; the multicast user confirms the decoding state of the sending signals of the unicast user and other multicast users and the decoding state of the sending signals of the unicast user to the multicast user according to the receiving and sending processes of the first pilot signal and the second pilot signal; the multicast user broadcasts the state classification to other multicast users according to the decoding state; the multicast user calculates the channel gain in the state classification receiving process; and the multicast user confirms the relay user according to a countdown strategy, and the countdown strategy confirms according to the classification of the decoding state and the channel gain in the state classification receiving process. According to the scheme, under certain specific user distribution scenes, the multi-user detection and signal transmission effects are improved, and the overall performance of the network is improved.
Drawings
Fig. 1 is a flowchart of a multicast user scheduling selection method according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a network system architecture according to an embodiment of the present invention;
fig. 3 is a flowchart of a multicast user scheduling selection method according to a second embodiment of the present invention;
fig. 4 is a schematic structural diagram of a multicast user scheduling selection apparatus according to a third embodiment of the present invention;
fig. 5 is a schematic structural diagram of a terminal device in a network system according to a fourth embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are for purposes of illustration and not limitation. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
It should be noted that, for the sake of brevity, this description does not exhaust all alternative embodiments, and it should be understood by those skilled in the art after reading this description that any combination of features may constitute an alternative embodiment as long as the features are not mutually inconsistent.
The following examples are described in detail.
Example one
Fig. 1 is a flowchart of a multicast user scheduling selection method according to an embodiment of the present invention. The multicast user scheduling selection method provided in the embodiment may be performed by various operating devices for multicast user scheduling selection, where the operating devices may be implemented by software and/or hardware, and the operating devices may be formed by two or more physical entities or may be formed by one physical entity.
As shown in fig. 2, the network system for implementing the present solution is applied to a larger-scale internet of things, and includes a base station 10, a unicast user 20 and a plurality of multicast users 30, where the present solution is directed to a case where the unicast user 20 has a relatively poor channel condition due to a relatively long distance from the base station 10; however, the multicast users 30 can be clustered and have relatively better channel conditions due to the closer distance to the base station 10, and at this time, better user detection and channel transmission scheduling can be provided through the scheme on the basis of the above network actual conditions, so that a better signal transmission effect is achieved, and the overall performance of the network is improved.
Specifically, referring to fig. 1, the multicast user scheduling selection method specifically includes:
step S101: the base station broadcasts a first pilot signal to a unicast user and a plurality of multicast users.
Step S102: and the unicast user broadcasts a second pilot signal to the multicast user, wherein the second pilot signal carries channel information when the unicast user receives the first pilot signal.
A pilot signal refers to a signal, typically a single frequency, transmitted for measurement or monitoring purposes within a wireless communication network. The pilot signal is specifically implemented in the larger-scale internet of things in the scheme, does not carry substantial information, and is only used for being sent for the purpose of measurement or monitoring in the network system, so that relay confirmation in the multi-user network system is finally realized.
In the network system aimed at by the scheme, the base station directly sends a message to a closer user (a unicast user and/or a multicast user) and then the relay user forwards the message to a remote user. In order to realize subsequent relay user judgment, the pilot signal transmission needs to be completed twice, wherein the pilot signal transmitted by the base station to the unicast user and the multicast user is defined as a first pilot signal, the pilot signal transmitted by the unicast user to the multicast user is defined as a second pilot signal, the transmission principles of the two pilot signals are similar, and the two pilot signals are distinguished from each other only because the transmission subject and the receiving target are different.
In the scheme, in order to better realize the scheduling selection effect, when the unicast user broadcasts the second pilot signal, the unicast user also simply carries the channel information of the unicast user when the unicast user receives the first pilot signal, so that the multicast user can make better scheduling selection according to the channel information subsequently.
Step S103: and the multicast user confirms the decoding state of the transmission signals of the unicast user and other multicast users and the decoding state of the transmission signals of the unicast user and the multicast users according to the transceiving process of the first pilot signal and the second pilot signal.
In the scheme, the decoding state of the sending signals of the unicast users and other multicast users and the decoding state of the sending signals of the unicast users and the multicast users are comprehensively judged among the devices related to the pilot signals through twice receiving and sending of the pilot signals, namely the decoding state of the pilot signals is used as the instantaneous state of signal transmission among the current devices, and the signal transmission state before actual data transmission is calculated by taking the pilot signals as the preamble prediction.
Step S104: and the multicast user broadcasts the state classification to other multicast users according to the decoding state.
Step S105: the multicast subscriber calculates the channel gain during the state classification reception.
Step S106: and the multicast user confirms the relay user according to a countdown strategy, and the countdown strategy confirms according to the decoding state classification and the channel gain in the state classification receiving process.
In order to select one of the multiple multicast users as a relay user, the signal state of each multicast user needs to be measured or monitored by receiving and transmitting the pilot signal twice, so that the comprehensive state of each multicast user is obtained, and the relay state of each multicast user is comprehensively evaluated. The method comprises the steps that partial multicast users are screened out to serve as alternatives according to comprehensive judgment of states in the process of pilot signal transmission twice, each device directly competes for relay users by a countdown strategy based on channel gain in consideration of ensuring the signal transmission efficiency among the alternative multicast users, if countdown is completed first, the relay users are confirmed to be the relay users, substantial signals are ready to be forwarded, confirmed results are broadcasted, and other alternative multicast users do not need to participate in relay tasks when the countdown is finished. The countdown strategy based on the channel gains mainly means that a countdown time length is generated based on the channel gains and a preset formula, because the channel gains are slightly different, the corresponding countdown time lengths also have differences, and finally, a multicast user which finishes countdown firstly serves as a relay user. The specific formula confirms that the real channel gain can be converted into the countdown duration, for example, by using a reference duration and a reference channel gain.
In general, the signal receiving state of the unicast user is used as the relay selection reference of the multicast user, so that the signal stability in the transmission process is the best.
The base station broadcasts the first pilot signal to a unicast user and a plurality of multicast users; the unicast user broadcasts a second pilot signal to the multicast user, wherein the second pilot signal carries channel information when the unicast user receives the first pilot signal; the multicast user confirms the decoding state of the sending signals of the unicast user and other multicast users and the decoding state of the sending signals of the unicast user to the multicast user according to the receiving and sending processes of the first pilot signal and the second pilot signal; the multicast user broadcasts the state classification to other multicast users according to the decoding state; the multicast user calculates the channel gain in the state classification receiving process; and the multicast user confirms the relay user according to a countdown strategy, and the countdown strategy confirms according to the classification of the decoding state and the channel gain in the state classification receiving process. According to the scheme, under certain specific user distribution scenes, the multi-user detection and signal transmission effects are improved, and the overall performance of the network is improved.
Example two
Fig. 3 is a flowchart of a multicast user scheduling selection method according to a second embodiment of the present invention, which is embodied on the basis of the second embodiment.
Specifically, referring to fig. 3, the method for scheduling and selecting a multicast user provided in this embodiment specifically includes:
step S201: the base station broadcasts a first pilot signal to a unicast user.
Step S202: the base station broadcasts a first pilot signal to a plurality of multicast users.
Step S203: the unicast user calculates a first channel gain during reception of the first pilot signal.
Step S204: the multicast subscriber calculates a second channel gain during reception of the first pilot signal.
Step S205: and the unicast user broadcasts a second pilot signal to the multicast user, wherein the second pilot signal carries channel information when the unicast user receives the first pilot signal.
Step S206: the multicast subscriber calculates a third channel gain during reception of the second pilot signal.
Step S207: and the multicast user confirms the decoding state of the transmission signals of the unicast user and other multicast users and the decoding state of the transmission signals of the multicast user by the unicast user according to the first channel gain, the second channel gain and the third channel gain.
Step S208: the multicast users are divided into a first class, a second class and a third class according to the decoding states, the first class is the multicast users which decode the sending signals of the unicast users and other multicast users successfully, the second class is the multicast users which decode the sending signals of the unicast users successfully, and the third class is the multicast users which can decode the sending signals successfully by the unicast users.
Step S209: the multicast user broadcasts a classification identification to other multicast users, and the classification identification is used for identifying whether the multicast user belongs to the first class or not.
Step S210: the multicast subscriber calculates the channel gain during the state classification reception.
Step S211: and calculating the channel gain in the receiving process of the classification identifier for the second multicast user which does not belong to the first multicast user after receiving the classification identifier.
Step S212: the third multicast user calculates the channel gain worst value in the receiving process of the classified identification, confirms the countdown duration according to the channel gain worst value, and broadcasts a relay confirmation instruction to other multicast users when the countdown is finished, wherein the relay confirmation instruction is used for confirming that the third multicast user is a relay user; and when the multicast user receives the relay confirmation instruction in the countdown process, stopping countdown.
In the scheme, the third type of multicast users are necessarily a subset of the second type of multicast users, so that the multicast user which can maximize the worst condition is selected from the third type of multicast users as the relay user, and the most stable transmission network in a specific transmission process can be realized, namely the relay user is the multicast user which enables the interruption probability to be minimum.
The present embodiment is a specific implementation of the previous embodiment, and specific implementation of the receiving and sending of the pilot signal, the judgment of the decoding state, the calculation of the channel gain, and the like in a single step has been implemented in the prior art, and details are not described herein. It should be particularly emphasized that, in this scheme, the finally confirmed relay user can enable the first type multicast user to receive the signal sent by the multicast user twice, so as to achieve the diversity gain with the order of 2, and also enable the sub-network based on the temporary confirmation of the relay user to achieve the grading gain with the order of 2. Even if the first multicast user is an empty set, the confirmation of the relay user can be realized based on the scheme, and the successful transmission of the signal is finally ensured.
It should be noted that, in this embodiment, steps S201 to S212 are not necessarily performed strictly in sequence based on the described order, for example, step S201 and step S202 are not independent steps, and for the base station 10, it is completed in one step that it broadcasts to the unicast user 20 and the multicast user 30, that is, the base station 10 performs one broadcast, and the unicast user 20 and the multicast user 30 receive independently from each other, and in fig. 3, the broadcast process is described as two sending steps, which is only for better distinguishing data processing between different devices and within different devices, and does not represent strict limitation on the step execution order. For another example, in step S203 and step S204, step S203 is to perform corresponding channel gain calculation after the unicast user 20 receives the first pilot signal broadcast by the base station 10 (i.e., step S201), step S204 is to perform corresponding channel gain calculation after the multicast user 30 receives the first pilot signal broadcast by the base station 10 (i.e., step S202), step S203 and step S204 are two relatively independent execution processes, the execution bodies of the two processes are different, and the two processes are not in strict order, but are each independently executed.
In fig. 3, only one multicast subscriber 30 is shown, and in reality, there are multiple multicast subscribers 30, and for the confirmation process of the single relay subscriber, the processing steps of each multicast subscriber 30 are actually slightly different, but within the overall framework of the scheme, the implementation processes of the multicast subscribers 30 are the same. Based on the above slight differences in the single processing and the overall same logical relationship in the overall design, the unity of the overall process and the differences in the single implementation are shown in fig. 3, and are described in detail here. As for the above-mentioned steps S206 to S212, the steps S206 to S210 may be steps that all multicast subscribers 30 need to execute, and the steps S211 to S212 are steps that other multicast subscribers execute, in fig. 3, the steps S211 to S212 are specifically indicated by dotted lines, and are only steps that are executed by multicast subscribers as a whole to distinguish the two steps, but when relay subscriber confirmation is performed during a single signal transmission process, the steps S206 to S212 are not absolutely executed by the same multicast subscriber.
EXAMPLE III
Fig. 4 is a schematic structural diagram of a multicast user scheduling selection apparatus according to a third embodiment of the present invention. Referring to fig. 4, the multicast user schedule selecting apparatus includes: a first broadcasting unit 310, a second broadcasting unit 320, a status confirmation unit 330, a classification broadcasting unit 340, a first calculation unit 350, and a relay confirmation unit 360.
The first broadcasting unit 310 is configured to broadcast, by a base station, a first pilot signal to a unicast user and multiple multicast users; a second broadcasting unit 320, configured to broadcast, by the unicast user, a second pilot signal to the multicast user, where the second pilot signal carries channel information when the unicast user receives the first pilot signal; a status confirmation unit 330, configured to confirm, by the multicast user, decoding statuses of the transmission signals of the unicast user and the other multicast users and decoding statuses of the transmission signals of the unicast user and the multicast users according to the transceiving processes of the first pilot signal and the second pilot signal; a classification broadcasting unit 340, configured to broadcast, by the multicast user, a state classification to other multicast users according to the decoding state; a first calculating unit 350, configured to calculate a channel gain in the status classification receiving process for the multicast user; a relay confirmation unit 360, configured to confirm the relay user according to a countdown strategy by the multicast user, where the countdown strategy confirms according to the decoding status classification and the channel gain in the status classification receiving process.
On the basis of the above embodiment, the apparatus further includes:
a second calculating unit, configured to calculate, by the unicast user, a first channel gain in the first pilot signal receiving process, and calculate, by the multicast user, a second channel gain in the first pilot signal receiving process;
and the third calculating unit is used for calculating a third channel gain in the process of receiving the second pilot signal by the multicast user.
On the basis of the foregoing embodiment, the status confirmation unit 330 is specifically configured to confirm, by the multicast user, the decoding statuses of the transmission signals of the unicast user and other multicast users according to the first channel gain, the second channel gain, and the third channel gain, and confirm the decoding statuses of the transmission signals of the multicast user by the unicast user.
On the basis of the above embodiment, the classification broadcasting unit 340 includes:
the classification module is used for classifying the multicast users into a first class, a second class and a third class according to the decoding states, wherein the first class is the multicast users which decode the sending signals of the unicast users and other multicast users successfully, the second class is the multicast users which decode the sending signals of the unicast users successfully, and the third class is the multicast users which can decode the sending signals successfully by the unicast users;
and the identification broadcasting module is used for broadcasting the classification identification to other multicast users by the multicast user, and the classification identification is used for identifying the first type or not.
On the basis of the above embodiment, the relay confirmation unit 360 includes:
a gain calculation unit, configured to receive the second class multicast user whose classification identifier does not belong to the first class, and calculate a channel gain in the process of receiving the classification identifier;
the countdown unit is used for calculating a channel gain worst value in a classified identification receiving process by the third multicast user, confirming a countdown duration according to the channel gain worst value, broadcasting a relay confirmation instruction to other multicast users when the countdown is finished, wherein the relay confirmation instruction is used for confirming that the relay user is a relay user; and when the multicast user receives the relay confirmation instruction in the countdown process, stopping countdown.
The multicast user scheduling selection device provided by the embodiment of the invention is included in the multicast user scheduling selection device, can be used for executing any one of the multicast user scheduling selection methods provided by the first embodiment and the second embodiment, and has corresponding functions and beneficial effects.
It should be noted that, in this embodiment, each unit/module is not completely implemented in the same device, but is distributed to devices with different function definitions in a network system for communication, and performs corresponding processing on signals transmitted between the devices, and each unit/module forms a complete complex through the corresponding processing of the transmitted signals, thereby finally achieving the design objective.
Example four
Fig. 2 is a network architecture diagram of a network system according to a fourth embodiment of the present invention, where the network system includes a base station 10, a unicast subscriber 20, and a plurality of multicast subscribers 30, where the base station 10, the unicast subscriber 20, and the plurality of multicast subscribers 30 each include:
one or more processors;
a memory for storing one or more programs;
when executed by the one or more processors, cause the network system to implement the multicast user schedule selection method according to any one of embodiments one and two.
The base stations, unicast users and multicast users shown in fig. 2 generally have similarities in overall functional structure as different existing forms of terminal devices, but because the functional locations of the respective base stations, unicast users and multicast users in the network system are different, the strength of a certain functional structure and the specific implementation may be different. On the basis of the physical structure, the embodiment further provides a specific hardware presentation scheme of the terminal device. As shown in fig. 5, the terminal device includes a processor 410, a memory 420, an input means 430, an output means 440, and a communication means 450; the number of the processors 410 in the terminal device may be one or more, and one processor 410 is taken as an example in fig. 5; the processor 410, the memory 420, the input device 430, the output device 440 and the communication device 450 in the terminal equipment may be connected by a bus or other means, and the connection by the bus is exemplified in fig. 5.
The memory 420 serves as a computer-readable storage medium, and may be used to store software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the multicast user schedule selection method in the embodiment of the present invention (for example, the first broadcast unit 310, the second broadcast unit 320, the status confirmation unit 330, the classification broadcast unit 340, the first calculation unit 350, and the relay confirmation unit 360 in the multicast user schedule selection apparatus). The processor 410 executes various functional applications of the terminal device and data processing by executing software programs, instructions and modules stored in the memory 420, that is, implements the multicast user scheduling selection method described above.
The memory 420 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal device, and the like. Further, the memory 420 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, memory 420 may further include memory located remotely from processor 410, which may be connected to a terminal device through a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input means 430 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the terminal device. The output device 440 may include a display device such as a display screen.
The terminal equipment comprises a multicast user scheduling selection device, can be used for executing any multicast user scheduling selection method, and has corresponding functions and beneficial effects.
EXAMPLE five
Embodiments of the present invention further provide a storage medium containing computer-executable instructions, which when executed by a computer processor, are configured to perform relevant operations in the multicast user scheduling selection method provided in any embodiment of the present application, and have corresponding functions and advantages.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product.
Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein. The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks. These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks. These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory. The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). The memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A method for multicast user scheduling selection, comprising:
a base station broadcasts a first pilot signal to a unicast user and a plurality of multicast users;
the unicast user broadcasts a second pilot signal to the multicast user, wherein the second pilot signal carries channel information when the unicast user receives the first pilot signal;
the multicast user confirms the decoding state of the sending signals of the unicast user and other multicast users and the decoding state of the sending signals of the unicast user to the multicast user according to the transceiving process of the first pilot signal and the second pilot signal;
the multicast user broadcasts state classification to other multicast users according to the decoding state;
the multicast user calculates the channel gain in the state classification receiving process;
and the multicast user confirms the relay user according to a countdown strategy, and the countdown strategy confirms according to the decoding state classification and the channel gain in the state classification receiving process.
2. The method of claim 1, wherein after the base station broadcasts the first pilot signal to a unicast user and a plurality of multicast users, further comprising:
the unicast user calculates a first channel gain in the first pilot signal receiving process, and the multicast user calculates a second channel gain in the first pilot signal receiving process;
after the unicast user broadcasts the second pilot signal to the multicast user, the method further comprises:
the multicast subscriber calculates a third channel gain during reception of the second pilot signal.
3. The method according to claim 2, wherein the multicast user confirms the decoding status of the transmission signals of the unicast user and other multicast users and the decoding status of the transmission signals of the unicast user and multicast users according to the transceiving process of the first pilot signal and the second pilot signal, specifically:
and the multicast user confirms the decoding state of the transmission signals of the unicast user and other multicast users and the decoding state of the transmission signals of the multicast user by the unicast user according to the first channel gain, the second channel gain and the third channel gain.
4. The method of claim 3, wherein the multicast subscriber broadcasts a status classification to other multicast subscribers based on the decoding status, comprising:
the multicast users are divided into a first class, a second class and a third class according to the decoding states, the first class is the multicast users which decode the sending signals of the unicast users and other multicast users successfully, the second class is the multicast users which decode the sending signals of the unicast users successfully, and the third class is the multicast users which can decode the sending signals successfully by the unicast users;
the multicast user broadcasts a classification identification to other multicast users, and the classification identification is used for identifying whether the multicast user belongs to the first class or not.
5. The method of claim 4, wherein the multicast subscriber identifies the relay subscriber according to a countdown policy, comprising:
receiving the classification identifier, calculating channel gain in the process of receiving the classification identifier for a second type multicast user which does not belong to the first type;
the third multicast user calculates the channel gain worst value in the receiving process of the classified identification, confirms the countdown duration according to the channel gain worst value, and broadcasts a relay confirmation instruction to other multicast users when the countdown is finished, wherein the relay confirmation instruction is used for confirming that the third multicast user is a relay user; and when the multicast user receives the relay confirmation instruction in the countdown process, stopping countdown.
6. A multicast user schedule selection apparatus, comprising:
a first broadcasting unit, which is used for broadcasting a first pilot signal to a unicast user and a plurality of multicast users by a base station;
a second broadcasting unit, configured to broadcast, by the unicast user, a second pilot signal to the multicast user, where the second pilot signal carries channel information when the unicast user receives the first pilot signal;
a state confirmation unit, configured to confirm, by the multicast user, decoding states of the transmission signals of the unicast user and the other multicast users and decoding states of the transmission signals of the unicast user and the multicast users according to the transceiving processes of the first pilot signal and the second pilot signal;
the classified broadcasting unit is used for broadcasting state classification to other multicast users by the multicast user according to the decoding state;
a first calculating unit, configured to calculate, by the multicast user, a channel gain in the state classification receiving process;
and the relay confirming unit is used for confirming the relay user by the multicast user according to a countdown strategy, and the countdown strategy confirms according to the decoding state classification and the channel gain in the state classification receiving process.
7. The apparatus of claim 6, further comprising:
a second calculating unit, configured to calculate, by the unicast user, a first channel gain in the first pilot signal receiving process, and calculate, by the multicast user, a second channel gain in the first pilot signal receiving process;
and the third calculating unit is used for calculating a third channel gain in the process of receiving the second pilot signal by the multicast user.
8. The apparatus according to claim 7, wherein the status confirmation unit is specifically configured to confirm, by the multicast user, the decoding status of the transmission signals of the unicast user and other multicast users and the decoding status of the transmission signals of the multicast user by the unicast user according to the first channel gain, the second channel gain, and the third channel gain.
9. A network system comprising a base station, a unicast user and a plurality of multicast users, wherein the base station, the unicast user and the plurality of multicast users each comprise:
one or more processors;
a memory for storing one or more programs;
when executed by the one or more processors, cause the network system to implement the multicast user schedule selection method of any of claims 1-5.
10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out a multicast user scheduling selection method according to any one of claims 1 to 5.
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