CN110999127B - Method, apparatus, and computer readable medium for resource allocation for relay communication - Google Patents
Method, apparatus, and computer readable medium for resource allocation for relay communication Download PDFInfo
- Publication number
- CN110999127B CN110999127B CN201780093629.7A CN201780093629A CN110999127B CN 110999127 B CN110999127 B CN 110999127B CN 201780093629 A CN201780093629 A CN 201780093629A CN 110999127 B CN110999127 B CN 110999127B
- Authority
- CN
- China
- Prior art keywords
- time domain
- relay
- remote devices
- remote
- communication
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Embodiments of the present disclosure relate to methods, devices, and computer-readable media for resource allocation for relay communications. A method described herein includes determining, at a relay device associated with a plurality of remote devices, a probability that a downlink transmission for a first remote device of the plurality of remote devices and an uplink transmission from a second remote device of the plurality of remote devices are performed simultaneously on a single time domain resource. The method also includes transmitting, to a network device serving the relay device, information regarding time domain resources required for downlink transmissions for the plurality of remote devices in response to the probability being above a predetermined threshold.
Description
Technical Field
Embodiments of the present disclosure relate to wireless communication networks, and more particularly, to a method, apparatus, and computer-readable medium for resource allocation for relay communication in a wireless communication network.
Background
In long term evolution-advanced (LTE-a), relay communication is an important issue. Relay communication enables data forwarding between a remote device and a network device via a relay device. For low-cost devices such as machine type communication devices, wearable devices, and the like, the use of relay communication can greatly reduce power consumption for data transmission, and thus is very beneficial. However, relay communication has a half-duplex limitation. As the number of remote devices associated with a relay device increases, the half-duplex limitation will significantly impact the performance of the relay communication.
Disclosure of Invention
Embodiments of the present disclosure provide methods, devices, and computer-readable media for resource allocation for relay communications.
In a first aspect, embodiments of the present disclosure provide a method for resource allocation for relay communication. The method includes determining, at a relay device associated with a plurality of remote devices, a probability that a downlink transmission for a first remote device of the plurality of remote devices and an uplink transmission from a second remote device of the plurality of remote devices are performed simultaneously on a single time domain resource. The method also includes, in response to the probability being above a predetermined threshold, sending information to a network device serving the relay device regarding time domain resources required for downlink transmissions for the plurality of remote devices.
In some embodiments, determining the probability comprises determining the probability based on at least one of: traffic volume of the downlink transmission for the plurality of remote devices, a number of time domain resources in a communication resource pool used for the relay communication, and a number of the plurality of remote devices.
In some embodiments, the method further comprises determining a number of required subframes based on traffic volume of the downlink transmission for the plurality of remote devices.
In some embodiments, sending the information comprises sending the number of required subframes to the network device.
In some embodiments, the method further comprises selecting the required subframes from a communication resource pool for the relay communication based on the number of the required subframes. Transmitting the information includes transmitting an indication of the selected subframe to the network device.
In some embodiments, sending the information comprises sending traffic for the downlink transmissions for the plurality of remote devices.
In some embodiments, transmitting the information comprises transmitting the information once within a plurality of scheduling assignment periods for the relay communication.
In a second aspect, embodiments of the present disclosure provide a method for resource allocation for relay communication. The method includes receiving, at a network device, information from a relay device served by the network device regarding time domain resources required for downlink transmissions from the relay device to a plurality of remote devices associated with the relay device. The method also includes determining the time domain resource based on the information. The method also includes transmitting an indication of the time domain resource to the plurality of remote devices.
In a third aspect, embodiments of the present disclosure provide a method for resource allocation for relay communication. The method includes receiving, at one of a plurality of remote devices associated with a relay device, an indication of time domain resources required for downlink transmissions from the relay device to the plurality of remote devices from a network device serving the relay device. The method also includes obtaining a sub-pool of the pool of communication resources by excluding the time domain resources from a pool of communication resources for the relay communication based on the indication of the time domain resources. The method also includes selecting time domain resources required for uplink transmission for the relay device from the sub-pool.
In a fourth aspect, embodiments of the present disclosure provide a terminal device that acts as a relay device. The relay device is associated with a plurality of remote devices. The relay device includes a controller and a memory coupled to the controller. The memory includes instructions that, when executed by the controller, cause the relay device to perform actions. The actions include determining a probability that a downlink transmission for a first remote device of the plurality of remote devices and an uplink transmission from a second remote device of the plurality of remote devices are performed simultaneously on a single time domain resource. The actions further include, in response to the probability being above a predetermined threshold, sending information regarding time domain resources required for downlink transmissions for the plurality of remote devices to a network device serving the relay device.
In a fifth aspect, embodiments of the present disclosure provide a network device. The network device includes a controller and a memory coupled to the controller. The memory includes instructions that, when executed by the controller, cause the network device to perform actions. The actions include receiving, from a relay device served by the network device, information related to time domain resources required for downlink transmissions from the relay device to a plurality of remote devices associated with the relay device. The actions further include determining the time domain resource based on the information. The actions also include transmitting an indication of the time domain resource to the plurality of remote devices.
In a sixth aspect, embodiments of the present disclosure provide a terminal device that acts as a remote device associated with a relay device. The remote device includes a controller and a memory coupled to the controller. The memory includes instructions that, when executed by the controller, cause the remote device to perform actions. The actions include: receiving, from a network device serving the relay device, an indication of time domain resources required for downlink transmissions from the relay device to a plurality of remote devices associated with the relay device; obtaining a sub-pool of the communication resource pool by excluding the time domain resource from the communication resource pool for the relay communication based on the indication of the time domain resource; and selecting time domain resources required for uplink transmission for the relay device from the sub-pool.
In a seventh aspect, embodiments of the present disclosure provide a computer-readable medium comprising computer-executable instructions that, when executed on a device, cause the device to perform the method according to the first aspect.
In an eighth aspect, embodiments of the present disclosure provide a computer-readable medium comprising computer-executable instructions that, when executed on a device, cause the device to perform the method according to the second aspect.
In a ninth aspect, embodiments of the disclosure provide a computer-readable medium comprising computer-executable instructions that, when executed on a device, cause the device to perform the method according to the third aspect.
It should be understood that the statements herein reciting aspects are not intended to limit the critical or essential features of the embodiments of the present disclosure, nor are they intended to limit the scope of the present disclosure. Other features of the present disclosure will become apparent from the following description.
Drawings
The above and other objects, features and advantages of the present disclosure will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings. In the drawings, like reference numerals generally refer to like parts.
Fig. 1 shows a schematic diagram of a communication system according to an embodiment of the present disclosure;
fig. 2 is a flowchart illustrating a resource allocation procedure for relay communication according to an embodiment of the present disclosure;
fig. 3 shows a flow diagram of a method implemented at a relay device in accordance with an embodiment of the disclosure;
fig. 4 shows a flow diagram of a method implemented at a network device in accordance with an embodiment of the present disclosure;
FIG. 5 shows a flow diagram of a method implemented at a remote device in accordance with an embodiment of the present disclosure; and
FIG. 6 illustrates a simplified block diagram of an electronic device suitable for implementing embodiments of the present disclosure.
Detailed Description
The principles and spirit of the present disclosure will be described below with reference to a number of exemplary embodiments shown in the drawings. It is understood that these specific embodiments are described merely to enable those skilled in the art to better understand and implement the present disclosure, and are not intended to limit the scope of the present disclosure in any way.
The term "base station" as used herein refers to a Node B (Node B, or NB), a Base Transceiver Station (BTS), a Base Station (BS), or a base station subsystem (BSs), etc. The term "terminal equipment" refers to any Terminal Equipment (TE) capable of communicating with a base station. The terminal device may be a User Equipment (UE) or any terminal with wireless communication capability, including but not limited to, a cell phone, a computer, a personal digital assistant, a game console, a wearable device, a sensor, and the like. The term TE can be used interchangeably with mobile station, subscriber station, mobile terminal, user equipment, terminal equipment, wireless device, etc.
The terms "eNB," and "network device," "base station" may be used interchangeably in the context of this disclosure, the terms "relay device," "relay UE," "terminal device" may be used interchangeably, and the terms "remote device," "remote UE," "terminal device" may be used interchangeably. It should be understood that this is merely exemplary and is not intended to limit the scope of applicability of the present disclosure in any way.
Fig. 1 shows a schematic diagram of a communication system 100 in which embodiments of the present disclosure may be implemented. In fig. 1, the communication system 100 is deployed as an architecture that provides relay communication services, and there may be multiple relay devices and multiple remote devices within the coverage area of the network device 110, each relay device being associated with a group of remote devices. For convenience of discussion herein, a relay communication group formed by a relay device and a set of remote devices associated with the relay device together is referred to as a relay cluster or a relay device cluster. Relay clusters typically have a small range, e.g., several meters to tens of meters.
As shown in fig. 1, relay device 121 is associated with remote device 122, remote device 123, and remote device 124, which collectively form relay device cluster 120. In some scenarios, a relay device 121 in the relay device cluster 120 and remote devices 122, 123, and 124 are in bidirectional device-to-device communication over a PC5 interface. For the downlink direction of the bidirectional communication link, the relay device transmits data to the remote device; for the uplink direction of the bi-directional communication link, the remote device transmits data to the relay device.
It will be appreciated that any number of relay devices may be present within the coverage area of network device 110, each relay device having any suitable number of remote devices associated therewith, and fig. 1 is merely an illustrative example.
The relay communication between relay device 121 and remote device 122 and 124 typically employs a half-duplex mode. The half-duplex mode does not allow downlink transmissions from relay device 121 to remote device 122 and 124 and uplink transmissions from remote device 122 and 124 to relay device 121 to be performed simultaneously on a single time domain resource. The time domain resources may include, for example, but are not limited to, subframes.
Traditionally, relay device 121 and remote device 122-124 autonomously select time and frequency resources from the pool of communication resources for relaying communications. Since the relay device 121 and the remote device 122 and 124 autonomously select time domain resources, there are the following scenarios: at least one of the relay device 121 and the remote device 122 and 124 selects the same time domain resource and simultaneously performs traffic transmission to the other, that is, downlink transmission from the relay device 121 to at least one of the remote device 122 and 124 and uplink transmission from at least one of the remote device 122 and 124 to the relay device 121 are simultaneously performed on a single time domain resource. This will result in relay device 121 and remote device 122 and 124 not being able to transmit and receive traffic simultaneously on a single time domain resource. Moreover, as the number of remote devices associated with a relay device increases, the probability of such a scenario arising increases, thereby severely impacting the performance of the relayed communication.
To address, at least in part, the above-identified, and other potential drawbacks and problems in the conventional approaches, embodiments of the present disclosure propose a solution for communication resource selection by a relay device assisted remote device. In an embodiment of the present disclosure, a relay device sends information about time domain resources required for downlink transmission to a network device. The network device determines time domain resources used by the relay device for the downlink transmission based on the information, and transmits information about the determined time domain resources to a remote device associated with the relay device. The remote device excludes the time domain resources used by the relay device from the communication resource pool based on the received information, and selects a desired time domain resource from the remaining resources in the communication resource pool for uplink transmission.
Since the remote device excludes the time domain resource used by the relay device from the communication resource pool, the remote device is prevented from simultaneously performing uplink transmission and downlink transmission using the same time domain resource as the relay device, thereby improving the performance of the relay communication. Hereinafter, a method of resource allocation for relay communication according to the present disclosure will be described in detail with reference to fig. 2 to 5.
Fig. 2 is a flow diagram illustrating a resource allocation procedure 200 for relay communication in accordance with an embodiment of the present disclosure. Process 200 may be performed, for example, by network device 110, relay device 121, and remote device 122 as shown in fig. 1 and 124. For ease of discussion, the description of process 200 will be made in conjunction with network device 110, relay device 121, and remote device 122. It should be understood that process 200 may also include additional acts not shown and/or may omit acts shown, as the scope of the present disclosure is not limited in this respect.
As shown in fig. 2, relay device 121 determines (210) a probability that a downlink transmission to a first remote device of the plurality of remote devices and an uplink transmission from a second remote device of the plurality of remote devices are simultaneously performed on a single time domain resource. The first remote device may be the same or different from the second remote device, and the scope of the present disclosure is not limited in this respect. For example, the first remote device and the second remote device may both be remote device 122 shown in FIG. 1, or the first remote device may be remote device 122 shown in FIG. 1 and the second remote device may be one of remote devices 123 and 124 shown in FIG. 1.
In some embodiments, the relay device 121 may determine the probability based on at least one of: traffic volume of downlink transmissions for the plurality of remote devices, a number of time domain resources in a communication resource pool used for relay communication, and a number of the plurality of remote devices associated with the relay device 121.
After determining the probability, the relay device 121 further determines whether the probability is above a predetermined threshold. In one embodiment, the predetermined threshold may be in the range of 0.2 to 0.5. Of course, any other suitable range is possible depending on the specific needs and application scenario. Note that the specific numerical values in the above examples are exemplary and are not intended to limit the scope of the present disclosure in any way.
If the probability is above a predetermined threshold, the relay device 121 sends (220) information to the network device 110 about time domain resources required for downlink transmission for the plurality of remote devices.
Upon receiving information from relay device 121 regarding time domain resources required for downlink transmissions for a plurality of remote devices, network device 110 determines (230) time domain resources required for downlink transmissions by relay device 121 for the plurality of remote devices based on the information.
Thereafter, the network device 110 sends (240) to the remote device 122 an indication of time domain resources required for downlink transmission by the relay device 121 for the plurality of remote devices. The indication of the time domain resource may include, but is not limited to, an index of the subframe.
In some embodiments, network device 110 may transmit the indication of the time domain resource to remote device 122 over a Physical Downlink Control Channel (PDCCH). The PDCCH may be addressed by the relay device 121 or a side link radio network temporary identifier (SL-RNTI) of the relay cluster.
Upon receiving the indication of the time domain resource, remote device 122 excludes the time domain resource from the pool of communication resources based on the indication of the time domain resource, thereby obtaining a sub-pool of the pool of communication resources. Remote device 122 selects (260) the time domain resources required for uplink transmission for relay device 121 from the sub-pool. Since remote device 122 excludes the time domain resource used by relay device 121 from the communication resource pool, simultaneous downlink and uplink transmissions using the same time domain resource as that used by relay device 121 are avoided, thereby improving the performance of the relay communication.
In some embodiments, relay device 121 may send the traffic of downlink transmissions for a plurality of remote devices to network device 110 as information relating to the required time domain resources. Accordingly, network device 110 may determine the number of subframes required for downlink transmissions by relay device 121 for the plurality of remote devices based on the amount of traffic. Further, the network device 110 may allocate the required subframes for the relay device 121 from the communication resource pool based on the number.
In some embodiments, relay device 121 may determine the number of subframes needed based on the amount of traffic for downlink transmissions for multiple remote devices. Thereafter, the relay device 121 may transmit the number of required subframes to the network device 110 as information on the required subframes. Accordingly, the network device 110 may allocate the required subframes for the relay device 121 from the communication resource pool based on the number.
In some embodiments, network device 110 may randomly select the number of subframes from the communication resource pool. In other embodiments, network device 110 may select the number of subframes from the communication resource pool based on the spatial relationship between relay devices in different relay clusters using a resource allocation scheme to reduce interference between different relay clusters. Network device 110 may then allocate the selected subframes to relay device 121 for downlink transmission to a plurality of remote devices.
In other embodiments, the relay device 121 may select the required subframes from the communication resource pool for downlink transmission to the plurality of remote devices based on the number of required subframes. In such embodiments, relay device 121 may transmit an indication of the selected subframe to network device 110 as information related to the required subframe.
In general, the amount of downlink transmitted traffic of the relay device 121 for a plurality of remote devices does not change over a plurality of scheduling assignment periods. Thus, to further reduce signaling overhead, in some embodiments, process 200 may be performed once within a plurality of scheduling assignment periods for relay communications.
It should be understood that the resource allocation scheme according to the embodiment of the present disclosure may also be applied to resource selection for scheduling allocation transmission in relay communication. Relay device 121 notifies a plurality of remote devices via network device 110 of information about time domain resources required for scheduling an allocation transmission. The multiple remote devices may then perform their own resource selection for respective scheduled allocation transmissions based on the received information, thereby eliminating the effects of the half-duplex restrictions.
Fig. 3 shows a flow diagram of a method 300 implemented at a relay device in accordance with an embodiment of the disclosure. For convenience of description, the method 300 will be described below with reference to fig. 1, taking the embodiment at the relay device 121 shown in fig. 1 as an example. It should be understood that method 300 may also include additional steps not shown and/or may omit steps shown, as the scope of the present disclosure is not limited in this respect.
At block 310, the relay device 121 associated with a plurality of remote devices determines a probability that a downlink transmission to a first remote device of the plurality of remote devices and an uplink transmission from a second remote device of the plurality of remote devices are performed simultaneously on a single time domain resource.
At block 320, the relay device 121 sends information regarding time domain resources required for downlink transmissions for the plurality of remote devices to the network device 110 serving the relay device 121 in response to the probability being above a predetermined threshold.
In some embodiments, determining the probability comprises determining the probability based on at least one of: traffic volume of the downlink transmission for the plurality of remote devices, a number of time domain resources in a communication resource pool used for the relay communication, and a number of the plurality of remote devices.
In some embodiments, method 300 further comprises determining a number of required subframes based on traffic volume of the downlink transmission for the plurality of remote devices.
In some embodiments, sending the information comprises sending the number of required subframes to network device 110.
In some embodiments, method 300 further comprises selecting the required subframes from a pool of communication resources for the relay communication based on the number of the required subframes. Transmitting the information includes transmitting an indication of the selected subframe to network device 110.
In some embodiments, sending the information comprises sending traffic for the downlink transmissions for the plurality of remote devices.
In some embodiments, transmitting the information comprises transmitting the information once within a plurality of scheduling assignment periods for the relay communication.
It should be understood that the various operations and features described above with respect to relay device 121 with reference to fig. 1 and 2 are equally applicable to method 300 and have similar effects. For the sake of simplicity, detailed description thereof is omitted here.
Fig. 4 shows a flow diagram of a method 400 implemented at a network device in accordance with an embodiment of the present disclosure. For ease of description, the method 400 is described below in conjunction with fig. 1, taking the example embodiment at the network device 110 shown in fig. 1 as an example. It should be understood that method 400 may also include additional steps not shown and/or may omit steps shown, as the scope of the disclosure is not limited in this respect.
At block 410, network device 110 receives, from relay device 121 served by network device 110, information regarding time domain resources required for downlink transmissions from relay device 121 to a plurality of remote devices associated with relay device 121.
At block 420, network device 110 determines the time domain resource based on the information.
At block 430, network device 110 sends an indication of the time domain resource to the plurality of remote devices
In some embodiments, receiving the information comprises receiving a number of subframes required for the downlink transmission.
In some embodiments, the method 400 further comprises allocating the subframe for the relay device 121 from a communication resource pool for the relay communication based on the number of the subframes.
In some embodiments, receiving the information comprises receiving an indication of subframes required for the downlink transmission.
In some embodiments, receiving the information comprises receiving traffic of the downlink transmission.
In some embodiments, the method 400 further comprises: determining a number of subframes required for the downlink transmission based on the traffic volume; and allocating the subframe for the relay device 121 from a communication resource pool for the relay communication based on the number of the subframes.
In some embodiments, receiving the information comprises receiving the information once within a plurality of scheduling assignment periods for the relay communication.
It should be understood that the various operations and features described above with respect to network device 110 with reference to fig. 1 and 2 are equally applicable to method 400 and have similar effects. For the sake of simplicity, detailed description thereof is omitted here.
Fig. 5 shows a flow diagram of a method 500 implemented at a remote device, in accordance with an embodiment of the present disclosure. The method 500 may be implemented at any of the remote devices 122 and 124 shown in FIG. 1. For ease of description, the method 500 is described below in conjunction with FIG. 1, taking as an example the implementation at the remote device 122 shown in FIG. 1. It should be understood that method 500 may also include additional steps not shown and/or may omit steps shown, as the scope of the present disclosure is not limited in this respect.
At block 510, remote device 122 receives an indication of time domain resources required for downlink transmissions from relay device 121 to a plurality of remote devices associated with relay device 121 from network device 110 serving relay device 121.
At block 520, remote device 122 obtains a sub-pool of the pool of communication resources by excluding the time domain resources from the pool of communication resources for the relay communication based on the indication of the time domain resources.
At block 530, the remote device 122 selects time domain resources from the sub-pool that are needed for uplink transmission by the relay device 121.
In some embodiments, receiving the indication of the time domain resource comprises receiving the indication of the time domain resource once within a plurality of scheduling allocation periods for the relay communication
It should be understood that various operations and features described above with respect to fig. 1 and 2 in relation to remote device 122 are equally applicable to method 500 and have similar effects. For the sake of simplicity, detailed description thereof is omitted here.
The resource allocation scheme according to the present disclosure can improve the performance of relay communication. To verify this effect, a system level simulation was performed for the scenario where the relay device 121 sends an indication of its own selected time domain resources to the network device 110 to compare the conventional resource allocation scheme with the resource allocation scheme of the present disclosure. Simulations were performed for both cases. In the first case, the number of relay devices N per cell is 10 and the number of remote devices M associated with each relay device is 2. In the second case, the number of relay devices N per cell is 10 and the number of remote devices M associated with each relay device is 8.
The performance metrics used in the simulation include the outage rate and the average packet throughput for the relay communication UL (from remote device to relay device) and the relay communication DL (from relay device to remote device). The simulation results are shown in table 1.
TABLE 1
Simulation results show the performance gain of the resource allocation scheme of the present disclosure over conventional resource allocation schemes. This performance gain is significant when the number of remote devices associated with a single relay device is large (M-8).
Fig. 6 illustrates a block diagram of a communication device 600 suitable for implementing embodiments of the present disclosure. Device 600 may be used to implement a sending device or a receiving device in embodiments of the present disclosure, such as one of network device 110, relay device 121, or remote device 122 and 124 shown in fig. 1.
As shown in the example in fig. 6, the communications device 600 may include one or more processors 610, one or more memories 620 coupled to the processors 610, and one or more transmitters and/or receivers (TX/RX)640 coupled to the processors 610.
The processor 610 may be of any suitable type suitable to the local technical environment and may include, but is not limited to, one or more of general purpose computers, special purpose computers, microcontrollers, digital signal controllers (DSPs), and processors based on a multi-core processor architecture. The communication device 600 may have multiple processors, such as an application specific integrated circuit chip that is time driven by a clock synchronized to the main processor.
The memory 620 may be of any suitable type suitable to the local technical environment and may be implemented using any suitable data storage technology, such as non-transitory computer-readable storage media, semiconductor-based memory devices, magnetic memory devices and systems, optical memory devices and systems, fixed memory and removable memory, as non-limiting examples.
The programs 630 may include program instructions that, when executed by the associated processor 610, enable the device 600 to operate according to embodiments of the present disclosure, as described with reference to fig. 2-5. That is, embodiments of the present disclosure may be implemented by computer software executable by the processor 610 of the communication device 600, or by hardware, or by a combination of software and hardware.
In general, the various example embodiments of this disclosure may be implemented in hardware or special purpose circuits, software, logic or any combination thereof. Certain aspects may be implemented in hardware, while other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device. While aspects of embodiments of the disclosure have been illustrated or described as block diagrams, flow charts, or using some other pictorial representation, it is well understood that the blocks, apparatus, systems, techniques or methods described herein may be implemented in, as non-limiting examples, hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controller or other computing devices, or some combination thereof. Examples of hardware devices that may be used to implement embodiments of the present disclosure include, but are not limited to: field Programmable Gate Arrays (FPGAs), Application Specific Integrated Circuits (ASICs), Application Specific Standards (ASSPs), systems on a chip (SOCs), Complex Programmable Logic Devices (CPLDs), and the like.
By way of example, embodiments of the disclosure may be described in the context of machine-executable instructions, such as those included in program modules, being executed in a device on a target real or virtual processor. Generally, program modules include routines, programs, libraries, objects, classes, components, data structures, etc. that perform particular tasks or implement particular abstract data types. In various embodiments, the functionality of the program modules may be combined or divided between program modules as described. Machine-executable instructions for program modules may be executed within a local or distributed device. In a distributed facility, program modules may be located in both local and remote memory storage media.
Computer program code for implementing the methods of the present disclosure may be written in one or more programming languages. These computer program codes may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the program codes, when executed by the computer or other programmable data processing apparatus, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be performed. The program code may execute entirely on the computer, partly on the computer, as a stand-alone software package, partly on the computer and partly on a remote computer or entirely on the remote computer or server.
In the context of this disclosure, a machine-readable medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. The machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination thereof. More detailed examples of a machine-readable storage medium include an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical storage device, a magnetic storage device, or any suitable combination thereof.
Additionally, while operations are depicted in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. In some cases, multitasking or parallel processing may be beneficial. Similarly, while the above discussion contains certain specific implementation details, this should not be construed as limiting the scope of any invention or claims, but rather as a description of specific embodiments that may be directed to a particular invention. Certain features that are described in this specification in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment can also be implemented in multiple embodiments separately or in any suitable subcombination.
Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.
Claims (35)
1. A resource allocation method for relay communication, comprising:
determining, at a relay device associated with a plurality of remote devices, a probability that a downlink transmission for a first remote device of the plurality of remote devices and an uplink transmission from a second remote device of the plurality of remote devices are performed simultaneously on a single time domain resource; and
in response to the probability being above a predetermined threshold, sending information about time domain resources required for downlink transmissions for the plurality of remote devices to a network device serving the relay device.
2. The method of claim 1, wherein determining the probability comprises:
determining the probability based on at least one of:
traffic of the downlink transmission for the plurality of remote devices,
a number of time domain resources in a communication resource pool for the relay communication, an
A number of the plurality of remote devices.
3. The method of claim 1, further comprising:
determining a number of subframes required based on traffic volume of the downlink transmission for the plurality of remote devices.
4. The method of claim 3, wherein sending the information comprises:
transmitting the number of required subframes to the network device.
5. The method of claim 3, wherein:
the method further comprises:
selecting the required subframes from a communication resource pool for the relay communication based on the number of the required subframes;
sending the information includes:
transmitting an indication of the selected subframe to the network device.
6. The method of claim 1, wherein sending the information comprises:
sending traffic for the downlink transmission for the plurality of remote devices.
7. The method of claim 1, wherein sending the information comprises:
transmitting the information once within a plurality of scheduling assignment periods for the relay communication.
8. A resource allocation method for relay communication, comprising:
receiving, at a network device, information relating to time domain resources required for downlink transmissions from the relay device to a plurality of remote devices associated with the relay device from a relay device served by the network device, the information relating to time domain resources being sent in response to: a probability that a downlink transmission of a first remote device of a plurality of remote devices and an uplink transmission from a second remote device of the plurality of remote devices are simultaneously performed on a single time domain resource is determined to be above a predetermined threshold;
determining the time domain resource based on the information; and
transmitting an indication of the time domain resource to the plurality of remote devices.
9. The method of claim 8, wherein receiving the information comprises:
a number of subframes required to receive the downlink transmission.
10. The method of claim 9, further comprising:
allocating the subframe for the relay device from a communication resource pool for the relay communication based on the number of subframes.
11. The method of claim 8, wherein receiving the information comprises:
receiving an indication of subframes required for the downlink transmission.
12. The method of claim 8, wherein receiving the information comprises:
receiving traffic for the downlink transmission.
13. The method of claim 12, further comprising:
determining a number of subframes required for the downlink transmission based on the traffic volume; and
allocating the subframe for the relay device from a communication resource pool for the relay communication based on the number of subframes.
14. The method of claim 8, wherein receiving the information comprises:
receiving the information once within a plurality of scheduling assignment periods for the relay communication.
15. A resource allocation method for relay communication, comprising:
receiving, at one of a plurality of remote devices associated with a relay device, an indication of a time domain resource from a network device serving the relay device, the time domain resource being a time domain resource required for downlink transmissions from the relay device to the plurality of remote devices, the time domain resource being determined by the network device based on information relating to the time domain resource sent from the relay device to the network device in response to: a probability that a downlink transmission of a first remote device of the plurality of remote devices and an uplink transmission from a second remote device of the plurality of remote devices are simultaneously performed on a single time domain resource is determined to be above a predetermined threshold;
obtaining a sub-pool of the communication resource pool by excluding the time domain resource from the communication resource pool for the relay communication based on the indication of the time domain resource; and
selecting time domain resources required for uplink transmission for the relay device from the sub-pool.
16. The method of claim 15, wherein receiving the indication of the time domain resources comprises:
receiving the indication of the time domain resource once within a plurality of scheduling assignment periods for the relay communication.
17. A terminal device that acts as a relay device associated with a plurality of remote devices and comprises:
a controller; and
a memory coupled to the controller, the memory including instructions that, when executed by the controller, cause the relay device to perform acts comprising:
determining a probability that a downlink transmission for a first remote device of the plurality of remote devices and an uplink transmission from a second remote device of the plurality of remote devices are performed simultaneously on a single time domain resource; and
in response to the probability being above a predetermined threshold, sending information to a network device serving the relay device regarding time domain resources required for downlink transmissions for the plurality of remote devices.
18. The terminal device of claim 17, wherein determining the probability comprises:
determining the probability based on at least one of:
traffic of the downlink transmission for the plurality of remote devices,
a number of time domain resources in a communication resource pool for the relay communication, an
A number of the plurality of remote devices.
19. The terminal device of claim 17, further comprising:
determining a number of subframes required based on traffic volume of the downlink transmission for the plurality of remote devices.
20. The terminal device of claim 19, wherein sending the information comprises:
transmitting the number of required subframes to the network device.
21. The terminal device of claim 19, wherein:
the relay device further includes:
selecting the required subframes from a communication resource pool for the relay communication based on the number of the required subframes;
sending the information includes:
transmitting an indication of the selected subframe to the network device.
22. The terminal device of claim 17, wherein sending the information comprises:
sending traffic for the downlink transmission for the plurality of remote devices.
23. The terminal device of claim 17, wherein sending the information comprises:
transmitting the information once within a plurality of scheduling assignment periods for the relay communication.
24. A network device, comprising:
a controller; and
a memory coupled to the controller, the memory including instructions that, when executed by the controller, cause the network device to perform acts comprising:
receiving, from a relay device served by the network device, information relating to time domain resources required for downlink transmissions from the relay device to a plurality of remote devices associated with the relay device, the information relating to time domain resources being sent in response to: a probability that a downlink transmission of a first remote device of a plurality of remote devices and an uplink transmission from a second remote device of the plurality of remote devices are simultaneously performed on a single time domain resource is determined to be above a predetermined threshold;
determining the time domain resource based on the information; and
transmitting an indication of the time domain resource to the plurality of remote devices.
25. The network device of claim 24, wherein receiving the information comprises:
a number of subframes required to receive the downlink transmission.
26. The network device of claim 25, further comprising:
allocating the subframes for the relay device from a communication resource pool for the relay communication based on the number of subframes.
27. The network device of claim 24, wherein receiving the information comprises:
receiving an indication of subframes required for the downlink transmission.
28. The network device of claim 24, wherein receiving the information comprises:
receiving traffic for the downlink transmission.
29. The network device of claim 28, further comprising:
determining a number of subframes required for the downlink transmission based on the traffic volume; and
allocating the subframe for the relay device from a communication resource pool for the relay communication based on the number of subframes.
30. The network device of claim 24, wherein receiving the information comprises:
receiving the information once within a plurality of scheduling assignment periods for the relay communication.
31. A terminal device that acts as a remote device associated with a relay device and comprises:
a controller; and
a memory coupled to the controller, the memory including instructions that, when executed by the controller, cause the remote device to perform acts comprising:
receiving, from a network device serving the relay device, an indication of time domain resources required for downlink transmissions from the relay device to a plurality of remote devices associated with the relay device, the time domain resources being determined by the network device based on information relating to time domain resources sent from the relay device to the network device in response to: a probability that a downlink transmission of a first remote device of the plurality of remote devices and an uplink transmission from a second remote device of the plurality of remote devices are simultaneously performed on a single time domain resource is determined to be above a predetermined threshold;
obtaining a sub-pool of the communication resource pool by excluding the time domain resource from the communication resource pool for the relay communication based on the indication of the time domain resource; and
selecting time domain resources required for uplink transmission for the relay device from the sub-pool.
32. The terminal device of claim 31, wherein receiving the indication of the time domain resource comprises:
receiving the indication of the time domain resource once within a plurality of scheduling assignment periods for the relay communication.
33. A computer-readable medium comprising computer-executable instructions that, when executed on a device, cause the device to perform the method of any of claims 1-7.
34. A computer-readable medium comprising computer-executable instructions that, when executed on a device, cause the device to perform the method of any of claims 8 to 14.
35. A computer-readable medium comprising computer-executable instructions that, when executed on a device, cause the device to perform the method of any of claims 15 to 16.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2017/096917 WO2019028779A1 (en) | 2017-08-10 | 2017-08-10 | Method and device for resource allocation of relay communication, and computer readable medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110999127A CN110999127A (en) | 2020-04-10 |
| CN110999127B true CN110999127B (en) | 2022-06-21 |
Family
ID=65272674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780093629.7A Active CN110999127B (en) | 2017-08-10 | 2017-08-10 | Method, apparatus, and computer readable medium for resource allocation for relay communication |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110999127B (en) |
| WO (1) | WO2019028779A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101527947A (en) * | 2008-03-06 | 2009-09-09 | 上海贝尔阿尔卡特股份有限公司 | Method and device for selecting communication path for mobile terminal in wireless relay network |
| WO2010003270A1 (en) * | 2008-07-07 | 2010-01-14 | 上海贝尔阿尔卡特股份有限公司 | Method and device for implementing communication in base station, relay station and mobile station |
| CN102118189A (en) * | 2009-12-31 | 2011-07-06 | 华为技术有限公司 | Contention-based resource configuration method and device |
| WO2011136524A3 (en) * | 2010-04-25 | 2012-03-08 | 엘지전자 주식회사 | Method and apparatus for transceiving data in a wireless access system |
| CN102547728A (en) * | 2010-12-09 | 2012-07-04 | 中兴通讯股份有限公司 | Method and device for spatially multiplexing frequency spectrums |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101931960B (en) * | 2009-06-18 | 2014-02-05 | 电信科学技术研究院 | Method for avoid uplink transmission conflict, system and device |
| CN102281636B (en) * | 2010-06-12 | 2016-04-13 | 中兴通讯股份有限公司 | The resource allocation methods of the Physical Downlink Control Channel of repeated link and system |
| CN105917723B (en) * | 2013-10-25 | 2020-01-03 | Oppo广东移动通信有限公司 | MAC protocol for directional transmission |
-
2017
- 2017-08-10 WO PCT/CN2017/096917 patent/WO2019028779A1/en active Application Filing
- 2017-08-10 CN CN201780093629.7A patent/CN110999127B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101527947A (en) * | 2008-03-06 | 2009-09-09 | 上海贝尔阿尔卡特股份有限公司 | Method and device for selecting communication path for mobile terminal in wireless relay network |
| WO2010003270A1 (en) * | 2008-07-07 | 2010-01-14 | 上海贝尔阿尔卡特股份有限公司 | Method and device for implementing communication in base station, relay station and mobile station |
| CN102118189A (en) * | 2009-12-31 | 2011-07-06 | 华为技术有限公司 | Contention-based resource configuration method and device |
| WO2011136524A3 (en) * | 2010-04-25 | 2012-03-08 | 엘지전자 주식회사 | Method and apparatus for transceiving data in a wireless access system |
| CN102547728A (en) * | 2010-12-09 | 2012-07-04 | 中兴通讯股份有限公司 | Method and device for spatially multiplexing frequency spectrums |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019028779A1 (en) | 2019-02-14 |
| CN110999127A (en) | 2020-04-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108632743B (en) | Communication method, network device and terminal device | |
| CN112154699B (en) | Sounding reference signal transmission | |
| CN110741702B (en) | Method and device for transmitting control information | |
| WO2020118686A1 (en) | Dmrs configuration | |
| CN107980239B (en) | Resource allocation method and device, network equipment and storage medium | |
| WO2023044912A1 (en) | Method, device and computer storage medium of communication | |
| CN113424584B (en) | Beam selection for MULTI-TRP | |
| US20160352485A1 (en) | D2d communication method and d2d communication apparatus | |
| US10291373B2 (en) | D2D communication control method and control apparatus | |
| CN109150436B (en) | Method and apparatus for downlink control | |
| CN110139370B (en) | Information indication method, communication device and communication system | |
| CN109951264B (en) | Method, apparatus and computer readable medium for communication | |
| CN109842944B (en) | Method, apparatus, and computer-readable storage medium for resource allocation on unlicensed spectrum | |
| EP3163958A1 (en) | Communication device and method for resource allocation | |
| JP2024501323A (en) | Communication methods, devices and computer readable storage media | |
| US12063181B2 (en) | Methods, devices and computer storage media for communication | |
| EP3576375B1 (en) | Controlling network devices and sending control information or data | |
| CN107567098A (en) | The method and apparatus of power distribution | |
| CN116569580A (en) | Method, apparatus and computer readable medium for communication | |
| CN111132093B (en) | Direct communication resource allocation method and device | |
| CN110999127B (en) | Method, apparatus, and computer readable medium for resource allocation for relay communication | |
| CN109392029B (en) | Communication of command and control information for an aircraft | |
| CN107708211B (en) | Communication method for multi-user superposition transmission and corresponding network equipment and terminal equipment | |
| CN108811054B (en) | Method and apparatus for resource allocation in relay communication | |
| CN106560012B (en) | Communication method and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |