CN106454710B - Resource allocation method and resource allocation device for D2D communication, base station and terminal - Google Patents
Resource allocation method and resource allocation device for D2D communication, base station and terminal Download PDFInfo
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- CN106454710B CN106454710B CN201610933368.2A CN201610933368A CN106454710B CN 106454710 B CN106454710 B CN 106454710B CN 201610933368 A CN201610933368 A CN 201610933368A CN 106454710 B CN106454710 B CN 106454710B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
Abstract
The invention provides a resource allocation method and a resource allocation device for D2D communication, a base station and a terminal, wherein the resource allocation method for D2D communication comprises the following steps: a base station supporting an unauthorized frequency band acquires resource information on frequency bands supported by other base stations which can be controlled by the base station; configuring communication resources for performing D2D transmission according to resource information on a frequency band supported by the base station itself and resource information on a frequency band supported by the other base station, where the communication resources for performing D2D transmission at least include communication resources on an unlicensed frequency band; and informing the configured communication resource for D2D transmission to the D2D communication terminal. The technical scheme of the invention enables the D2D communication terminal to carry out D2D communication through communication resources on the unlicensed frequency band, and realizes the application of a D2D communication mechanism on the unlicensed frequency band.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a resource allocation method for D2D communications, a resource allocation device for D2D communications, a base station, and a terminal.
Background
D2D (Device-to-Device) communication is a technology of direct communication between terminals introduced by 3GPP Release-12, and introduces the concept of sidelink (sidelink) based on the traditional uplink/downlink communication link. The D2D communication technology has completed the standardization of 3GPP Rel-12 and Rel-13, and currently 3GPP is carrying out the standardization of Rel-14. The D2D communication technology was standardized for the public safety scenario primarily in Release 12 and Rel-13, and for the business scenario beginning with Rel-14. In addition, the D2D technologies of Rel-12 to Rel-14 mainly aim at the licensed frequency band, and neither the transmission of base station control Signaling related to D2D communication, a Synchronization signal (SLSS) between terminals, Scheduling Assignment Signaling (SA) nor D2D data needs to consider interference from the unlicensed frequency band.
The D2D communication technology based on the authorized frequency band does not occupy uplink and downlink transmission resources of a macro base station although the capability of direct communication between terminals can be provided. However, there is a large barrier to industrialization and commercial deployment if the D2D communication technology is limited to licensed bands. In a commercial deployment scenario, if D2D communication is in the same frequency band as the cellular network deployed by the operator, the operator may consider the interference that D2D communication may bring as a potential threat. On the other hand, D2D communication bypasses a part of the traffic of the operators, resulting in reduced revenue of the operators, and for the operators with higher importance on traffic operation, the D2D communication technology is not deployed on the authorized frequency band in a mature business model. Therefore, expanding the D2D communication technology to the unlicensed spectrum becomes a technical choice to overcome the commercialized application of the D2D communication technology.
The existing D2D communication technology does not support D2D transmission in the unlicensed band, and after D2D terminals complete discovery, transmission is performed on resources in the licensed band, and does not support D2D transmission in the unlicensed band. Therefore, the prior art cannot utilize the 5G new LTE transmission technology (i.e., on the new unlicensed frequency band) for D2D data transmission.
Therefore, how to ensure that the D2D communication technology can be applied to the unlicensed spectrum becomes an urgent technical problem to be solved.
Disclosure of Invention
Based on at least one of the above technical problems, the present invention provides a new resource allocation scheme for D2D communication, so that a D2D communication terminal can perform D2D communication through communication resources on an unlicensed frequency band, and an application of a D2D communication mechanism on the unlicensed frequency band is implemented.
In view of this, according to a first aspect of the present invention, a resource configuration method for D2D communication is provided, including: a base station supporting an unauthorized frequency band acquires resource information on frequency bands supported by other base stations which can be controlled by the base station; configuring communication resources for performing D2D transmission according to resource information on a frequency band supported by the base station itself and resource information on a frequency band supported by the other base station, where the communication resources for performing D2D transmission at least include communication resources on an unlicensed frequency band; and informing the configured communication resource for D2D transmission to the D2D communication terminal.
In the technical scheme, a base station supporting an unlicensed frequency band configures communication resources for D2D transmission according to resource information on a frequency band supported by the base station and resource information on a frequency band supported by other base stations (such as a secondary base station of a primary base station) which can be controlled by the base station, so that the base station supporting the unlicensed frequency band can comprehensively analyze communication resources (such as communication resources of the unlicensed frequency band and communication resources of an licensed frequency band) among a plurality of base stations to configure communication resources for D2D transmission to a D2D communication terminal, the configured communication resources for D2D transmission at least include the communication resources on the unlicensed frequency band, that is, the communication resources on the licensed frequency band can also be included, and further, the D2D communication terminal can perform D2D communication through the communication resources on the unlicensed frequency band, thereby implementing application of a D2D communication mechanism on the unlicensed frequency band.
In the above technical solution, preferably, the step of the base station supporting the unlicensed frequency band acquiring resource information on frequency bands supported by other base stations that can be controlled by the base station includes: and acquiring resource information on the frequency bands supported by the other base stations through interface signaling between the base stations.
Specifically, for example, resource information on frequency bands supported by other base stations may be acquired through an interface similar to X2.
In any of the above technical solutions, preferably, the step of configuring the communication resource for D2D transmission according to the resource information on the frequency band supported by the base station itself and the resource information on the frequency band supported by the other base station includes: and configuring the communication resource for performing the D2D transmission according to the resource usage on the frequency band supported by the base station itself and the resource usage on the frequency band supported by the other base station.
In the technical scheme, the resource which is not used and is suitable for D2D communication can be configured to the D2D communication terminal by configuring the communication resource for D2D transmission according to the resource use condition on the frequency band supported by the base station and the resource use condition on the frequency band supported by other base stations.
Further, in a case that the frequency band supported by the base station itself includes an unlicensed frequency band, the resource configuration method further includes:
receiving an interception report of the unauthorized frequency band resource reported by a terminal served by the base station, and determining the resource use condition on the unauthorized frequency band supported by the base station according to the interception report; and/or
And acquiring a data transmission state on the unlicensed frequency band supported by the base station, and determining the resource use condition on the unlicensed frequency band supported by the base station according to the data transmission state.
In this technical solution, since there may be other communication devices that are not controlled by the base station on the unlicensed frequency band, it is necessary to determine the resource usage on the unlicensed frequency band supported by the base station itself in an indirect manner. Specifically, the determination may be performed according to an interception report on the unlicensed frequency band resource reported by a terminal served by the base station, or according to a data transmission state (such as a delay condition, a packet loss rate, and the like) on the unlicensed frequency band.
Further, in a case that the frequency band supported by the base station itself includes a licensed frequency band, the resource configuration method further includes: and determining the resource use condition on the authorized frequency band supported by the base station according to the resource scheduling condition of the base station on the authorized frequency band.
In any of the above technical solutions, preferably, the step of notifying the configured communication resource for D2D transmission to the D2D communication terminal specifically includes:
and informing the configured communication resources for D2D transmission to the D2D communication terminal on a licensed frequency band or an unlicensed frequency band through system information or special signaling.
Further, when the configured communication resource for D2D transmission is notified to the D2D communication terminal on a licensed band, the base station can configure the communication resource on an unlicensed band to the D2D communication terminal by means of cross-carrier scheduling.
In this technical solution, since the configured communication resources for D2D transmission at least include communication resources in an unlicensed band, if the D2D communication terminal is notified of the configured communication resources for D2D transmission in a licensed band, it is necessary for the base station to be able to support the function of cross-carrier scheduling.
According to the second aspect of the present invention, there is also provided a resource configuration method for D2D communication, including: receiving communication resources which are notified by a base station supporting an unlicensed frequency band and used for D2D transmission; conducting D2D communications based on the communications resource conducting the D2D transmission; the communication resource for D2D transmission is configured by the base station according to resource information on a frequency band supported by the base station and resource information on a frequency band supported by another base station that can be controlled by the base station, and the communication resource for D2D transmission at least includes communication resource on an unlicensed frequency band.
In the technical scheme, because the communication resource for D2D transmission is configured by the base station supporting the unlicensed frequency band according to the resource information on the frequency band supported by the base station and the resource information on the frequency band supported by other base stations (such as the auxiliary base station of the main base station) which can be controlled by the base station, the base station supporting the unlicensed band can comprehensively analyze communication resources (such as communication resources of the unlicensed band and communication resources of the licensed band) among a plurality of base stations to configure the communication resources for D2D transmission to the D2D communication terminal, and the communication resources configured for D2D transmission at least include communication resources in the unlicensed frequency band, that is, the D2D communication terminal may also include communication resources in the licensed frequency band, so that the D2D communication terminal can perform D2D communication through the communication resources in the unlicensed frequency band, thereby implementing application of the D2D communication mechanism in the unlicensed frequency band.
In the foregoing technical solution, preferably, when the communication resource for D2D transmission includes both a communication resource on an unlicensed frequency band and a communication resource on a licensed frequency band, the resource allocation method further includes:
when D2D data needs to be transmitted together through an unlicensed frequency band and a licensed frequency band, dividing the D2D data to be transmitted into a first part of data transmitted on the unlicensed frequency band and a second part of data transmitted on the licensed frequency band; and transmitting the first part of data through the communication resource on the unlicensed frequency band, and transmitting the second part of data through the communication resource on the licensed frequency band.
Correspondingly, when another D2D communication terminal receives the first part of data on the unlicensed frequency band and receives the second part of data on the licensed frequency band, the first part of data and the second part of data need to be aggregated.
According to the third aspect of the present invention, there is also provided a resource configuration apparatus for D2D communication, including: a first obtaining unit, configured to obtain resource information on a frequency band supported by another base station that can be controlled by a base station supporting an unlicensed frequency band; a configuration unit, configured to configure a communication resource for D2D transmission according to resource information on a frequency band supported by the base station itself and resource information on a frequency band supported by the other base station, where the communication resource for D2D transmission at least includes a communication resource on an unlicensed frequency band; a notification unit, configured to notify the D2D-transmitted communication resource configured by the configuration unit to a D2D communication terminal.
In the technical scheme, a base station supporting an unlicensed frequency band configures communication resources for D2D transmission according to resource information on a frequency band supported by the base station and resource information on a frequency band supported by other base stations (such as a secondary base station of a primary base station) which can be controlled by the base station, so that the base station supporting the unlicensed frequency band can comprehensively analyze communication resources (such as communication resources of the unlicensed frequency band and communication resources of an licensed frequency band) among a plurality of base stations to configure communication resources for D2D transmission to a D2D communication terminal, the configured communication resources for D2D transmission at least include the communication resources on the unlicensed frequency band, that is, the communication resources on the licensed frequency band can also be included, and further, the D2D communication terminal can perform D2D communication through the communication resources on the unlicensed frequency band, thereby implementing application of a D2D communication mechanism on the unlicensed frequency band.
In the foregoing technical solution, preferably, the first obtaining unit is specifically configured to: and acquiring resource information on the frequency bands supported by the other base stations through interface signaling between the base stations.
Specifically, for example, resource information on frequency bands supported by other base stations may be acquired through an interface similar to X2.
In any one of the above technical solutions, preferably, the configuration unit is specifically configured to: and configuring the communication resource for performing the D2D transmission according to the resource usage on the frequency band supported by the base station itself and the resource usage on the frequency band supported by the other base station.
In the technical scheme, the resource which is not used and is suitable for D2D communication can be configured to the D2D communication terminal by configuring the communication resource for D2D transmission according to the resource use condition on the frequency band supported by the base station and the resource use condition on the frequency band supported by other base stations.
Further, in a case that the frequency band supported by the base station itself includes an unlicensed frequency band, the resource configuration apparatus further includes:
a receiving unit, configured to receive an interception report of resources in an unlicensed frequency band, where the interception report is reported by a terminal served by the base station, and determine, according to the interception report, a resource usage situation in the unlicensed frequency band supported by the base station itself; and/or
A second obtaining unit, configured to obtain a data transmission state on an unlicensed frequency band supported by the base station, and determine, according to the data transmission state, a resource usage situation on the unlicensed frequency band supported by the base station.
In this technical solution, since there may be other communication devices that are not controlled by the base station on the unlicensed frequency band, it is necessary to determine the resource usage on the unlicensed frequency band supported by the base station itself in an indirect manner. Specifically, the determination may be performed according to an interception report on the unlicensed frequency band resource reported by a terminal served by the base station, or according to a data transmission state (such as a delay condition, a packet loss rate, and the like) on the unlicensed frequency band.
Further, in a case that the frequency band supported by the base station itself includes a licensed frequency band, the resource configuration apparatus further includes:
a determining unit, configured to determine, according to a resource scheduling condition of the base station on an authorized frequency band, a resource usage condition on the authorized frequency band supported by the base station.
In any one of the above technical solutions, preferably, the notification unit is specifically configured to: and informing the configured communication resources for D2D transmission to the D2D communication terminal on a licensed frequency band or an unlicensed frequency band through system information or special signaling.
Further, when the notification unit notifies the D2D communication terminal of the configured communication resource for D2D transmission on a licensed frequency band, the base station can configure the communication resource on an unlicensed frequency band to the D2D communication terminal by means of cross-carrier scheduling.
In this technical solution, since the configured communication resources for D2D transmission at least include communication resources in an unlicensed band, if the D2D communication terminal is notified of the configured communication resources for D2D transmission in a licensed band, it is necessary for the base station to be able to support the function of cross-carrier scheduling.
According to the fourth aspect of the present invention, there is also provided a resource configuration apparatus for D2D communication, including: a receiving unit, configured to receive a communication resource for D2D transmission, which is notified by a base station that supports an unlicensed frequency band; a communication unit configured to perform D2D communication based on the communication resource performing the D2D transmission; the communication resource for D2D transmission is configured by the base station according to resource information on a frequency band supported by the base station and resource information on a frequency band supported by another base station that can be controlled by the base station, and the communication resource for D2D transmission at least includes communication resource on an unlicensed frequency band.
In the technical scheme, because the communication resource for D2D transmission is configured by the base station supporting the unlicensed frequency band according to the resource information on the frequency band supported by the base station and the resource information on the frequency band supported by other base stations (such as the auxiliary base station of the main base station) which can be controlled by the base station, the base station supporting the unlicensed band can comprehensively analyze communication resources (such as communication resources of the unlicensed band and communication resources of the licensed band) among a plurality of base stations to configure the communication resources for D2D transmission to the D2D communication terminal, and the communication resources configured for D2D transmission at least include communication resources in the unlicensed frequency band, that is, the D2D communication terminal may also include communication resources in the licensed frequency band, so that the D2D communication terminal can perform D2D communication through the communication resources in the unlicensed frequency band, thereby implementing application of the D2D communication mechanism in the unlicensed frequency band.
In the foregoing technical solution, preferably, when the communication resource for D2D transmission includes both a communication resource in an unlicensed frequency band and a communication resource in a licensed frequency band, the resource allocation apparatus further includes:
the processing unit is used for dividing the D2D data to be transmitted into a first part of data transmitted on the unlicensed frequency band and a second part of data transmitted on the licensed frequency band when the D2D data need to be transmitted together through the unlicensed frequency band and the licensed frequency band; a transmission unit, configured to transmit the first portion of data through the communication resource on the unlicensed frequency band, and transmit the second portion of data through the communication resource on the licensed frequency band.
Correspondingly, when another D2D communication terminal receives the first part of data on the unlicensed frequency band and receives the second part of data on the licensed frequency band, the first part of data and the second part of data need to be aggregated.
According to the fifth aspect of the present invention, there is also provided a base station, including: a resource configuration means for D2D communication as described in the third aspect above.
According to a sixth aspect of the present invention, there is also provided a terminal, comprising: the resource configuration apparatus for D2D communication as described in the fourth aspect above.
Through the technical scheme, the D2D communication terminal can perform D2D communication through communication resources on the unlicensed frequency band, and the application of a D2D communication mechanism on the unlicensed frequency band is realized.
Drawings
Fig. 1 shows a flow diagram of a resource configuration method for D2D communication according to a first embodiment of the invention;
fig. 2 shows a schematic block diagram of a resource configuration arrangement for D2D communication according to a first embodiment of the present invention;
fig. 3 shows a schematic block diagram of a base station according to a first embodiment of the invention;
fig. 4 shows a flow diagram of a resource configuration method for D2D communication according to a second embodiment of the invention;
fig. 5 shows a schematic block diagram of a resource configuration arrangement for D2D communication according to a second embodiment of the present invention;
fig. 6 shows a schematic block diagram of a terminal according to a first embodiment of the invention;
FIG. 7 shows a communication scenario diagram according to an embodiment of the invention;
fig. 8 is a flowchart illustrating a resource allocation and a communication method in D2D communication according to an embodiment of the present invention;
fig. 9 shows a schematic block diagram of a base station according to a second embodiment of the invention;
fig. 10 shows a schematic block diagram of a terminal according to a second embodiment of the present invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
Fig. 1 shows a flowchart of a resource configuration method for D2D communication according to a first embodiment of the present invention.
As shown in fig. 1, a resource allocation method for D2D communication according to a first embodiment of the present invention includes:
step S10, the base station supporting the unlicensed frequency band obtains resource information on frequency bands supported by other base stations that can be controlled by the base station.
In an embodiment of the present invention, step S10 specifically includes: and acquiring resource information on the frequency bands supported by the other base stations through interface signaling between the base stations. For example, resource information on frequency bands supported by other base stations can be acquired through an interface similar to X2.
Step S12, configuring the communication resource for D2D transmission according to the resource information on the frequency band supported by the base station itself and the resource information on the frequency band supported by the other base station, where the communication resource for D2D transmission at least includes the communication resource on the unlicensed frequency band.
In an embodiment of the present invention, step S12 specifically includes: and configuring the communication resource for performing the D2D transmission according to the resource usage on the frequency band supported by the base station itself and the resource usage on the frequency band supported by the other base station.
When the frequency band supported by the base station itself includes the unlicensed frequency band, the base station obtains the resource usage on the unlicensed frequency band supported by the base station itself, which specifically includes the following two schemes:
the first scheme is as follows:
receiving an interception report of the unauthorized frequency band resource reported by a terminal served by a base station, and determining the resource use condition on the unauthorized frequency band supported by the base station according to the interception report.
Scheme II:
acquiring a data transmission state (such as a delay condition, a packet loss rate and the like) on the unlicensed frequency band supported by the base station, and determining a resource use condition on the unlicensed frequency band supported by the base station according to the data transmission state.
When the frequency band supported by the base station itself includes the authorized frequency band, the specific step of the base station acquiring the resource use condition on the authorized frequency band supported by the base station itself is as follows: and determining the resource use condition on the authorized frequency band supported by the base station according to the resource scheduling condition of the base station on the authorized frequency band.
The resource allocation method for D2D communication shown in fig. 1 further includes:
step S14, notifying the configured communication resource for D2D transmission to the D2D communication terminal.
In an embodiment of the present invention, step S14 specifically includes: and informing the configured communication resources for D2D transmission to the D2D communication terminal on a licensed frequency band or an unlicensed frequency band through system information or special signaling.
Further, when the configured communication resource for D2D transmission is notified to the D2D communication terminal on a licensed band, the base station can configure the communication resource on an unlicensed band to the D2D communication terminal by means of cross-carrier scheduling.
In this technical solution, since the configured communication resources for D2D transmission at least include communication resources in an unlicensed band, if the D2D communication terminal is notified of the configured communication resources for D2D transmission in a licensed band, it is necessary for the base station to be able to support the function of cross-carrier scheduling.
In the technical solution shown in fig. 1, a base station supporting an unlicensed frequency band configures communication resources for D2D transmission according to resource information on a frequency band supported by the base station and resource information on a frequency band supported by other base stations capable of being controlled by the base station (e.g. a secondary base station of a primary base station), enabling a base station supporting the unlicensed frequency band to comprehensively analyze communication resources (such as communication resources of the unlicensed frequency band and communication resources of the licensed frequency band) among a plurality of base stations to configure communication resources for D2D transmission to a D2D communication terminal, wherein the configured communication resources for D2D transmission at least include communication resources in the unlicensed frequency band, that is, the D2D communication terminal may also include communication resources in the licensed frequency band, so that the D2D communication terminal can perform D2D communication through the communication resources in the unlicensed frequency band, thereby implementing application of the D2D communication mechanism in the unlicensed frequency band.
Fig. 2 shows a schematic block diagram of a resource configuration apparatus for D2D communication according to a first embodiment of the present invention.
As shown in fig. 2, a resource configuration apparatus 200 for D2D communication according to a first embodiment of the present invention includes: a first acquisition unit 202, a configuration unit 204 and a notification unit 206.
The first obtaining unit 202 is configured to obtain resource information on a frequency band supported by another base station that can be controlled by a base station supporting an unlicensed frequency band; the configuring unit 204 is configured to configure a communication resource for D2D transmission according to resource information on a frequency band supported by the base station itself and resource information on a frequency band supported by the other base station, where the communication resource for D2D transmission at least includes a communication resource on an unlicensed frequency band; the notifying unit 206 is configured to notify the D2D communication terminal of the communication resource configured by the configuring unit 204 and performing D2D transmission.
In the technical scheme, a base station supporting an unlicensed frequency band configures communication resources for D2D transmission according to resource information on a frequency band supported by the base station and resource information on a frequency band supported by other base stations (such as a secondary base station of a primary base station) which can be controlled by the base station, so that the base station supporting the unlicensed frequency band can comprehensively analyze communication resources (such as communication resources of the unlicensed frequency band and communication resources of an licensed frequency band) among a plurality of base stations to configure communication resources for D2D transmission to a D2D communication terminal, the configured communication resources for D2D transmission at least include the communication resources on the unlicensed frequency band, that is, the communication resources on the licensed frequency band can also be included, and further, the D2D communication terminal can perform D2D communication through the communication resources on the unlicensed frequency band, thereby implementing application of a D2D communication mechanism on the unlicensed frequency band.
In the foregoing technical solution, preferably, the first obtaining unit 202 is specifically configured to: and acquiring resource information on the frequency bands supported by the other base stations through interface signaling between the base stations.
Specifically, for example, resource information on frequency bands supported by other base stations may be acquired through an interface similar to X2.
In any one of the above technical solutions, preferably, the configuration unit 204 is specifically configured to: and configuring the communication resource for performing the D2D transmission according to the resource usage on the frequency band supported by the base station itself and the resource usage on the frequency band supported by the other base station.
In the technical scheme, the resource which is not used and is suitable for D2D communication can be configured to the D2D communication terminal by configuring the communication resource for D2D transmission according to the resource use condition on the frequency band supported by the base station and the resource use condition on the frequency band supported by other base stations.
Further, in a case that the frequency band supported by the base station itself includes an unlicensed frequency band, the resource configuration apparatus 200 further includes:
a receiving unit 208, configured to receive an interception report of resources in an unlicensed frequency band, where the interception report is reported by a terminal served by the base station, and determine, according to the interception report, a resource usage condition on the unlicensed frequency band supported by the base station itself; and/or
A second obtaining unit 210, configured to obtain a data transmission state on an unlicensed frequency band supported by the base station, and determine, according to the data transmission state, a resource usage situation on the unlicensed frequency band supported by the base station.
In this technical solution, since there may be other communication devices that are not controlled by the base station on the unlicensed frequency band, it is necessary to determine the resource usage on the unlicensed frequency band supported by the base station itself in an indirect manner. Specifically, the determination may be performed according to an interception report on the unlicensed frequency band resource reported by a terminal served by the base station, or according to a data transmission state (such as a delay condition, a packet loss rate, and the like) on the unlicensed frequency band.
Further, in a case that the frequency band supported by the base station itself includes a licensed frequency band, the resource configuration apparatus 200 further includes:
a determining unit 212, configured to determine, according to a resource scheduling condition of the base station on a licensed frequency band, a resource usage condition on the licensed frequency band supported by the base station.
In any one of the above technical solutions, preferably, the notification unit 206 is specifically configured to: and informing the configured communication resources for D2D transmission to the D2D communication terminal on a licensed frequency band or an unlicensed frequency band through system information or special signaling.
Further, when the notification unit 206 notifies the D2D communication terminal of the configured communication resource for D2D transmission on a licensed frequency band, the base station can configure the communication resource on an unlicensed frequency band to the D2D communication terminal by means of cross-carrier scheduling.
In this technical solution, since the configured communication resources for D2D transmission at least include communication resources in an unlicensed band, if the D2D communication terminal is notified of the configured communication resources for D2D transmission in a licensed band, it is necessary for the base station to be able to support the function of cross-carrier scheduling.
Fig. 3 shows a schematic block diagram of a base station according to a first embodiment of the invention.
As shown in fig. 3, a base station 300 according to a first embodiment of the present invention includes: such as the resource configuration apparatus 200 shown in fig. 2 for D2D communication.
Fig. 4 shows a flowchart of a resource allocation method for D2D communication according to a second embodiment of the present invention.
As shown in fig. 4, a resource allocation method for D2D communication according to a second embodiment of the present invention includes:
step S40, receiving the communication resource for D2D transmission notified by the base station supporting the unlicensed band. The communication resource for D2D transmission is configured by the base station according to resource information on a frequency band supported by the base station and resource information on a frequency band supported by another base station that can be controlled by the base station, and the communication resource for D2D transmission at least includes communication resource on an unlicensed frequency band.
And step S42, performing D2D communication based on the communication resource performing D2D transmission.
In the technical scheme, because the communication resource for D2D transmission is configured by the base station supporting the unlicensed frequency band according to the resource information on the frequency band supported by the base station and the resource information on the frequency band supported by other base stations (such as the auxiliary base station of the main base station) which can be controlled by the base station, the base station supporting the unlicensed band can comprehensively analyze communication resources (such as communication resources of the unlicensed band and communication resources of the licensed band) among a plurality of base stations to configure the communication resources for D2D transmission to the D2D communication terminal, and the communication resources configured for D2D transmission at least include communication resources in the unlicensed frequency band, that is, the D2D communication terminal may also include communication resources in the licensed frequency band, so that the D2D communication terminal can perform D2D communication through the communication resources in the unlicensed frequency band, thereby implementing application of the D2D communication mechanism in the unlicensed frequency band.
In the foregoing technical solution, preferably, when the communication resource for D2D transmission includes both a communication resource on an unlicensed frequency band and a communication resource on a licensed frequency band, the resource allocation method further includes:
when D2D data needs to be transmitted together through an unlicensed frequency band and a licensed frequency band, dividing the D2D data to be transmitted into a first part of data transmitted on the unlicensed frequency band and a second part of data transmitted on the licensed frequency band; and transmitting the first part of data through the communication resource on the unlicensed frequency band, and transmitting the second part of data through the communication resource on the licensed frequency band.
Correspondingly, when another D2D communication terminal receives the first part of data on the unlicensed frequency band and receives the second part of data on the licensed frequency band, the first part of data and the second part of data need to be aggregated.
Fig. 5 shows a schematic block diagram of a resource configuration apparatus for D2D communication according to a second embodiment of the present invention.
As shown in fig. 5, a resource configuration apparatus 500 for D2D communication according to a second embodiment of the present invention includes: a receiving unit 502 and a communication unit 504.
The receiving unit 502 is configured to receive a communication resource for D2D transmission, which is notified by a base station that supports an unlicensed frequency band; a communication unit 504 for D2D communication based on the communication resource for D2D transmissions; the communication resource for D2D transmission is configured by the base station according to resource information on a frequency band supported by the base station and resource information on a frequency band supported by another base station that can be controlled by the base station, and the communication resource for D2D transmission at least includes communication resource on an unlicensed frequency band.
In the technical scheme, because the communication resource for D2D transmission is configured by the base station supporting the unlicensed frequency band according to the resource information on the frequency band supported by the base station and the resource information on the frequency band supported by other base stations (such as the auxiliary base station of the main base station) which can be controlled by the base station, the base station supporting the unlicensed band can comprehensively analyze communication resources (such as communication resources of the unlicensed band and communication resources of the licensed band) among a plurality of base stations to configure the communication resources for D2D transmission to the D2D communication terminal, and the communication resources configured for D2D transmission at least include communication resources in the unlicensed frequency band, that is, the D2D communication terminal may also include communication resources in the licensed frequency band, so that the D2D communication terminal can perform D2D communication through the communication resources in the unlicensed frequency band, thereby implementing application of the D2D communication mechanism in the unlicensed frequency band.
In an embodiment of the present invention, when the communication resource for D2D transmission includes both a communication resource on an unlicensed frequency band and a communication resource on a licensed frequency band, the resource allocation apparatus 500 further includes: a processing unit 506 and a transmission unit 508.
The processing unit 506 is configured to, when D2D data needs to be transmitted together through an unlicensed frequency band and a licensed frequency band, divide the D2D data to be transmitted into a first part of data transmitted on the unlicensed frequency band and a second part of data transmitted on the licensed frequency band; the transmission unit 508 is configured to transmit the first part of data through the communication resource on the unlicensed frequency band, and transmit the second part of data through the communication resource on the licensed frequency band.
Correspondingly, when another D2D communication terminal receives the first part of data on the unlicensed frequency band and receives the second part of data on the licensed frequency band, the first part of data and the second part of data need to be aggregated.
Fig. 6 shows a schematic block diagram of a terminal according to a first embodiment of the present invention.
As shown in fig. 6, a terminal 600 according to a first embodiment of the present invention includes: such as the resource configuration apparatus 500 shown in fig. 5 for D2D communication.
The above describes the resource allocation scheme in D2D communication from the base station side and the terminal side, respectively, and the following further describes the whole scheme in conjunction with fig. 7 and 8:
as shown in fig. 7, the base station may configure, through coordination, communication resources for D2D transmission to the terminal 702, where the communication resources include at least communication resources for D2D transmission in the unlicensed band, and may also include communication resources for D2D transmission in the licensed band, and the terminal 702 communicates with the terminal 704 through the communication resources for D2D transmission configured by the base station.
Specifically, as shown in fig. 8, the method mainly includes the following steps:
in step 802, coordination is performed between base stations to determine the resources or resource pool for D2D transmissions.
Specifically, the base station supporting the unlicensed frequency band analyzes carrier resources on multiple frequency bands (which may include licensed frequency bands and unlicensed frequency bands) supported by the base station and frequency bands (which may include licensed frequency bands and unlicensed frequency bands) supported by other base stations (which may be multiple) that can be controlled by the base station, and configures resources or a resource pool (which includes at least communication resources on the unlicensed frequency bands and may also include communication resources on the licensed frequency bands) for D2D transmission.
The carrier resource information on the frequency bands supported by other base stations can be obtained through interface signaling between the base stations (e.g., in a manner similar to the X2 interface).
The criteria and methods for the base station to perform the resource or resource pool for D2D transmission according to the acquired resource configuration of the multiple carriers may include: the occupation situation of the radio resources in the licensed band, such as the used percentage, and the resource occupation situation of each carrier on the unlicensed band.
The base station can directly obtain the occupation situation of the authorized frequency band resources according to the resource scheduling information, and the occupation situation of the unauthorized frequency band resources needs to be indirectly obtained because other communication equipment which is not controlled by the base station may exist on the unauthorized frequency band. Such indirect means may include: the determination is performed according to the interception and reporting of the unlicensed frequency band resource by the terminal served by the base station, or according to the data transmission state on the unlicensed frequency band, such as delay, packet loss rate, and the like.
The resource or resource pool configured by the base station for D2D communication may be partially or completely located on the unlicensed frequency band. And the system information or dedicated signaling of the base station can be sent on the carrier cell of the authorized frequency band or the unauthorized frequency band.
If the base station configures resources or resource pools for D2D communication in the licensed frequency band through system information broadcasting or dedicated signaling, the base station needs to be able to support the configuration of D2D communication resources or resource pools in the unlicensed frequency band across carriers, because the resources or resource pools configured by the base station for D2D communication include D2D communication resources in the unlicensed frequency band.
If the base station configures resources or resource pools for D2D communication through system information broadcasting or dedicated signaling on the unlicensed frequency band and configures the resources of the cell, the base station does not need to perform cross-carrier operation to configure the D2D communication resources or resource pools on the unlicensed frequency band.
And step 806, performing D2D communication between the terminals through the resource or the resource pool configured by the base station for performing D2D communication.
If all the D2D communication resources are located in the unlicensed frequency band, the terminal needs to transmit the entire D2D data to be transmitted through the unlicensed frequency band when transmitting data.
If the D2D communication resource part is located on the unlicensed frequency band, and the terminals transmit data together through the unlicensed frequency band and the licensed frequency band, the terminals need to transmit D2D data through data slicing and aggregation of multiple carriers.
Fig. 9 shows a schematic block diagram of a base station according to a second embodiment of the invention.
As shown in fig. 9, a base station according to a second embodiment of the present invention includes: a processor 1, an input device 2, an output device 3 and a memory 5. In some embodiments of the present invention, the processor 1, the input device 2, the output device 3 and the memory 5 may be connected by a bus 4 or other means, and fig. 9 illustrates the connection by the bus 4.
Wherein, the memory 5 is used for storing a group of program codes, and the processor 1 calls the program codes stored in the memory 5 to execute the following operations:
acquiring resource information on frequency bands supported by other base stations which can be controlled by the base station supporting the unauthorized frequency band through the input device 2;
configuring communication resources for performing D2D transmission according to resource information on a frequency band supported by the base station itself and resource information on a frequency band supported by the other base station, where the communication resources for performing D2D transmission at least include communication resources on an unlicensed frequency band;
the configured communication resource for D2D transmission is notified to the D2D communication terminal through the output device 3.
As an alternative implementation, the processor 1 calls the program code stored in the memory 5, in particular to perform the following operations:
and the input device 2 acquires the resource information on the frequency bands supported by the other base stations through interface signaling between the base stations.
As an alternative implementation, the processor 1 calls the program code stored in the memory 5, in particular to perform the following operations:
and configuring the communication resource for performing the D2D transmission according to the resource usage on the frequency band supported by the base station itself and the resource usage on the frequency band supported by the other base station.
As an alternative implementation, in the case that the frequency bands supported by the base station itself include an unlicensed frequency band, the processor 1 calls the program code stored in the memory 5, and is further configured to perform the following operations:
receiving an interception report of the unauthorized frequency band resource reported by a terminal served by the base station, and determining the resource use condition on the unauthorized frequency band supported by the base station according to the interception report; and/or
And acquiring a data transmission state on the unlicensed frequency band supported by the base station, and determining the resource use condition on the unlicensed frequency band supported by the base station according to the data transmission state.
As an alternative implementation, in the case that the frequency bands supported by the base station itself include the licensed frequency bands, the processor 1 calls the program code stored in the memory 5, and is further configured to perform the following operations:
and determining the resource use condition on the authorized frequency band supported by the base station according to the resource scheduling condition of the base station on the authorized frequency band.
As an alternative implementation, the processor 1 calls the program code stored in the memory 5, in particular to perform the following operations:
notifying the configured communication resource for D2D transmission to the D2D communication terminal on a licensed band or on an unlicensed band by an output device 3 through system information or dedicated signaling.
Fig. 10 shows a schematic block diagram of a terminal according to a second embodiment of the present invention.
As shown in fig. 10, a terminal according to a second embodiment of the present invention includes: a processor 1', an input device 2', an output device 3 'and a memory 5'. In some embodiments of the present invention, the processor 1', the input device 2', the output device 3 'and the memory 5' may be connected by a bus 4 'or other means, and the connection by the bus 4' is exemplified in fig. 10.
Wherein the memory 5' is used for storing a set of program codes, and the processor 1' calls the program codes stored in the memory 5' for executing the following operations:
receiving, by the input device 2', a communication resource for D2D transmission notified by a base station supporting an unlicensed band;
performing, by the output device 3', D2D communication based on the communication resource performing D2D transmission;
the communication resource for D2D transmission is configured by the base station according to resource information on a frequency band supported by the base station and resource information on a frequency band supported by another base station that can be controlled by the base station, and the communication resource for D2D transmission at least includes communication resource on an unlicensed frequency band.
As an alternative implementation, in a case that the communication resource for D2D transmission includes both communication resources on an unlicensed frequency band and communication resources on a licensed frequency band, the processor 1 'invokes the program code stored in the memory 5' and is further configured to perform the following operations:
when D2D data needs to be transmitted together through an unlicensed frequency band and a licensed frequency band, dividing the D2D data to be transmitted into a first part of data transmitted on the unlicensed frequency band and a second part of data transmitted on the licensed frequency band;
transmitting, by the output device 3', the first portion of data over the communication resources on the unlicensed frequency band and the second portion of data over the communication resources on the licensed frequency band.
The steps in the method of the embodiment of the invention can be sequentially adjusted, combined and deleted according to actual needs.
The resource configuration device, the terminal and the units in the base station for D2D communication in the embodiments of the present invention can be combined, divided and deleted according to actual needs.
It will be understood by those skilled in the art that all or part of the steps in the methods of the embodiments described above may be implemented by hardware instructions of a program, and the program may be stored in a computer-readable storage medium, where the storage medium includes Read-Only Memory (ROM), Random Access Memory (RAM), Programmable Read-Only Memory (PROM), Erasable Programmable Read-Only Memory (EPROM), One-time Programmable Read-Only Memory (OTPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Compact Disc Read-Only Memory (CD-ROM), or other Memory, such as a magnetic disk, or a combination thereof, A tape memory, or any other medium readable by a computer that can be used to carry or store data.
The technical scheme of the invention is described in detail above with reference to the accompanying drawings, and the invention provides a new resource allocation scheme for D2D communication, so that a D2D communication terminal can perform D2D communication through communication resources on an unlicensed frequency band, and an application of a D2D communication mechanism on the unlicensed frequency band is realized.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (16)
1. A resource configuration apparatus for D2D communication, comprising:
a first obtaining unit, configured to obtain resource information on a frequency band supported by another base station that can be controlled by a base station supporting an unlicensed frequency band;
a configuration unit, configured to configure a communication resource for D2D transmission according to resource information on a frequency band supported by the base station itself and resource information on a frequency band supported by the other base station, where the communication resource for D2D transmission at least includes a communication resource on an unlicensed frequency band;
a notification unit configured to notify the D2D-transmitted communication resource configured by the configuration unit to a D2D communication terminal;
the configuration unit is specifically configured to: configuring the communication resource for D2D transmission according to the resource usage on the frequency band supported by the base station itself and the resource usage on the frequency band supported by the other base station;
wherein, in case that the frequency band supported by the base station itself includes an unlicensed frequency band, the resource configuration apparatus further includes:
a receiving unit, configured to receive an interception report of resources in an unlicensed frequency band, where the interception report is reported by a terminal served by the base station, and determine, according to the interception report, a resource usage situation in the unlicensed frequency band supported by the base station itself; and/or
A second obtaining unit, configured to obtain a data transmission state on an unlicensed frequency band supported by the base station, and determine, according to the data transmission state, a resource usage situation on the unlicensed frequency band supported by the base station.
2. The apparatus for resource configuration for D2D communication according to claim 1, wherein the first obtaining unit is specifically configured to: and acquiring resource information on the frequency bands supported by the other base stations through interface signaling between the base stations.
3. The apparatus for resource configuration for D2D communication according to claim 1, wherein if the frequency band supported by the base station itself includes a licensed frequency band, the apparatus for resource configuration further comprises:
a determining unit, configured to determine, according to a resource scheduling condition of the base station on an authorized frequency band, a resource usage condition on the authorized frequency band supported by the base station.
4. The resource configuration apparatus for D2D communication according to any one of claims 1 to 3, wherein the notification unit is specifically configured to:
and informing the configured communication resources for D2D transmission to the D2D communication terminal on a licensed frequency band or an unlicensed frequency band through system information or special signaling.
5. The apparatus of claim 4, wherein when the notifying unit notifies the D2D-transmitting communication resource to the D2D communication terminal on a licensed band, the base station is capable of configuring the communication resource on an unlicensed band to the D2D communication terminal by means of cross-carrier scheduling.
6. A resource configuration apparatus for D2D communication, comprising:
a receiving unit, configured to receive a communication resource for D2D transmission, which is notified by a base station that supports an unlicensed frequency band;
a communication unit configured to perform D2D communication based on the communication resource performing the D2D transmission;
wherein the communication resource for D2D transmission is configured by the base station according to the resource information on the frequency band supported by the base station and the resource information on the frequency band supported by other base stations which can be controlled by the base station, and the communication resources for D2D transmissions comprise at least communication resources on unlicensed frequency bands, under the condition that the frequency band supported by the base station per se comprises an unlicensed frequency band, the base station determines the resource use condition on the unlicensed frequency band supported by the base station per se according to the interception report, and/or determining the resource use condition on the unlicensed frequency band supported by the base station according to the data transmission state, the interception report is an interception report of unlicensed frequency band resources reported by a terminal served by the base station, and the data transmission state is the data transmission state on the non-authorized frequency band supported by the base station, which is acquired by the base station.
7. The apparatus of claim 6, wherein when the communication resource for D2D transmissions comprises both communication resources in unlicensed band and communication resources in licensed band, the apparatus further comprises:
the processing unit is used for dividing the D2D data to be transmitted into a first part of data transmitted on the unlicensed frequency band and a second part of data transmitted on the licensed frequency band when the D2D data need to be transmitted together through the unlicensed frequency band and the licensed frequency band;
a transmission unit, configured to transmit the first portion of data through the communication resource on the unlicensed frequency band, and transmit the second portion of data through the communication resource on the licensed frequency band.
8. A method for resource allocation for D2D communication, comprising:
a base station supporting an unauthorized frequency band acquires resource information on frequency bands supported by other base stations which can be controlled by the base station;
configuring communication resources for D2D transmission according to the resource information on the frequency band supported by the base station itself and the resource information on the frequency band supported by the other base station, where the communication resources for D2D transmission at least include communication resources on an unlicensed frequency band, and specifically include:
configuring the communication resource for D2D transmission according to the resource usage on the frequency band supported by the base station itself and the resource usage on the frequency band supported by the other base station;
notifying the configured communication resource for D2D transmission to a D2D communication terminal;
wherein, in case that the frequency band supported by the base station itself includes an unlicensed frequency band, the resource configuration method further includes:
receiving an interception report of the unauthorized frequency band resource reported by a terminal served by the base station, and determining the resource use condition on the unauthorized frequency band supported by the base station according to the interception report; and/or
And acquiring a data transmission state on the unlicensed frequency band supported by the base station, and determining the resource use condition on the unlicensed frequency band supported by the base station according to the data transmission state.
9. The method of claim 8, wherein the step of the base station supporting the unlicensed frequency band acquiring the resource information on the frequency bands supported by other base stations capable of being controlled by the base station comprises:
and acquiring resource information on the frequency bands supported by the other base stations through interface signaling between the base stations.
10. The method of claim 9, wherein if the bands supported by the base station itself comprise licensed bands, the method further comprises:
and determining the resource use condition on the authorized frequency band supported by the base station according to the resource scheduling condition of the base station on the authorized frequency band.
11. The method according to any one of claims 8 to 10, wherein the step of notifying the configured communication resource for D2D transmission to a D2D communication terminal includes:
and informing the configured communication resources for D2D transmission to the D2D communication terminal on a licensed frequency band or an unlicensed frequency band through system information or special signaling.
12. The method of claim 11, wherein when the D2D communication terminal is notified of the configured communication resource for D2D transmission on a licensed band, the base station is able to configure the communication resource on an unlicensed band to the D2D communication terminal by means of cross-carrier scheduling.
13. A method for resource allocation for D2D communication, comprising:
receiving communication resources which are notified by a base station supporting an unlicensed frequency band and used for D2D transmission;
conducting D2D communications based on the communications resource conducting the D2D transmission;
wherein the communication resource for D2D transmission is configured by the base station according to the resource information on the frequency band supported by the base station and the resource information on the frequency band supported by other base stations which can be controlled by the base station, and the communication resources for D2D transmissions comprise at least communication resources on unlicensed frequency bands, under the condition that the frequency band supported by the base station per se comprises an unlicensed frequency band, the base station determines the resource use condition on the unlicensed frequency band supported by the base station per se according to the interception report, and/or determining the resource use condition on the unlicensed frequency band supported by the base station according to the data transmission state, the interception report is an interception report of unlicensed frequency band resources reported by a terminal served by the base station, and the data transmission state is the data transmission state on the non-authorized frequency band supported by the base station, which is acquired by the base station.
14. The method of claim 13, wherein if the communication resource for D2D communication comprises both communication resources in unlicensed band and communication resources in licensed band, the method further comprises:
when D2D data needs to be transmitted together through an unlicensed frequency band and a licensed frequency band, dividing the D2D data to be transmitted into a first part of data transmitted on the unlicensed frequency band and a second part of data transmitted on the licensed frequency band;
and transmitting the first part of data through the communication resource on the unlicensed frequency band, and transmitting the second part of data through the communication resource on the licensed frequency band.
15. A base station of resource configuration for D2D communication, comprising: the resource configuration apparatus for D2D communication according to any one of claims 1 to 5.
16. A terminal for resource configuration for D2D communication, comprising: resource configuration means for D2D communication according to claim 6 or 7.
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| CN201610933368.2A CN106454710B (en) | 2016-10-31 | 2016-10-31 | Resource allocation method and resource allocation device for D2D communication, base station and terminal |
| PCT/CN2017/072621 WO2018076563A1 (en) | 2016-10-31 | 2017-01-25 | Resource allocation method and resource allocation device for d2d communication, base station and terminal |
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| WO2019024113A1 (en) * | 2017-08-04 | 2019-02-07 | Oppo广东移动通信有限公司 | Resource scheduling method, terminal device, and network device |
| CN111279763B (en) * | 2017-10-27 | 2022-05-24 | Lg电子株式会社 | Method for receiving sidelink signal by terminal in wireless communication system supporting sidelink and apparatus therefor |
| CN114503769A (en) * | 2019-10-28 | 2022-05-13 | 华为技术有限公司 | Data sending and receiving method and device |
| US20220312303A1 (en) * | 2020-05-15 | 2022-09-29 | Apple Inc. | Enhanced initial access procedures in wireless communication |
| CN114258158A (en) * | 2020-09-21 | 2022-03-29 | 维沃移动通信有限公司 | Aggregation configuration method, device and terminal |
| CN114258157A (en) * | 2020-09-21 | 2022-03-29 | 维沃移动通信有限公司 | Aggregation configuration method, device and terminal |
| CN115734299A (en) * | 2021-08-31 | 2023-03-03 | 展讯通信（上海）有限公司 | Cell reselection method and device and terminal equipment |
| CN115801662A (en) * | 2022-11-04 | 2023-03-14 | 上海山源电子科技股份有限公司 | Information transmission method and system for 5G power distribution network |
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| US9516686B2 (en) * | 2010-03-17 | 2016-12-06 | Qualcomm Incorporated | Method and apparatus for establishing and maintaining peer-to-peer (P2P) communication on unlicensed spectrum |
| US9635603B2 (en) * | 2012-11-21 | 2017-04-25 | Intel Corporation | Systems and methods for implementing multiple band service discovery |
| CN104885522B (en) * | 2012-12-28 | 2019-10-22 | 安华高科技股份有限公司 | Improve the method, apparatus and computer program product of mobile communication |
| JP6350836B2 (en) * | 2013-09-30 | 2018-07-04 | 華為技術有限公司Ｈｕａｗｅｉ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｃｏ．，Ｌｔｄ． | Information transmission method, base station, and user equipment |
| CN105103637B (en) * | 2014-01-26 | 2019-07-23 | 华为技术有限公司 | Equipment communication means and device |
| WO2015113247A1 (en) * | 2014-01-29 | 2015-08-06 | 华为技术有限公司 | User equipment for direct connection communication, base station and method for establishing direct connection communication |
| WO2015179821A1 (en) * | 2014-05-22 | 2015-11-26 | Kyocera Corporation | Assignment of communication resources in an unlicensed frequency ban to equipment operating in a licensed frequency band |
| US10080120B2 (en) * | 2014-12-15 | 2018-09-18 | Huawei Technologies Co., Ltd | System and method for machine type communication |
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