WO2017161494A1 - D2d通信方法及设备 - Google Patents
D2d通信方法及设备 Download PDFInfo
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- WO2017161494A1 WO2017161494A1 PCT/CN2016/076972 CN2016076972W WO2017161494A1 WO 2017161494 A1 WO2017161494 A1 WO 2017161494A1 CN 2016076972 W CN2016076972 W CN 2016076972W WO 2017161494 A1 WO2017161494 A1 WO 2017161494A1
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- indication information
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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
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
- H04W4/46—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for vehicle-to-vehicle communication [V2V]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0278—Traffic management, e.g. flow control or congestion control using buffer status reports
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/14—Direct-mode setup
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/27—Transitions between radio resource control [RRC] states
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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
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
- H04W4/08—User group management
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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
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
Definitions
- the present invention relates to the field of vehicle networking, and in particular, to a D2D communication method and device.
- D2D communication is specifically divided into D2D discovery mode (ie, D2D discovery mode) and D2D communication mode (ie, D2D communication mode) according to different transmission modes.
- the data transmission adopts the SA (Schedulling Assignment) + DATA (Service Data) mode.
- SA Service Assignment
- DATA Service Data
- the user equipment When the user equipment needs to send the service data, it first sends an SA message indicating the status information of the service data sent from the sender, including the time-frequency resource occupation indication information of the data, the MCS information, the frequency hopping indication, and the timing advance information. Receive group ID information, etc. After successfully receiving and decoding the SA information, the user equipment at the receiving end receives the corresponding service data at the time-frequency resource location indicated by the SA information, and performs decoding according to the modulation and coding manner indicated by the SA information.
- the D2D communication mode can also be divided into two working modes: in the mode 1, as shown in FIG. 1A, the base station allocates a determined time-frequency resource in the resource pool for each D2D user equipment, for the user equipment to perform D2D. In mode 2, as shown in FIG. 1B, the user equipment autonomously randomly selects SA resources in the SA information resource pool, and randomly selects data resources in the service data resource pool. The source performs D2D communication.
- FIG. 1C shows a service period of a user equipment A.
- the transmission period of the user equipment A is 500 ms, and user equipment A selects a semi-static transmission resource at time 1.
- D2D communication is performed on semi-static transmission resources.
- the other user equipment B detects that the user equipment A occupies a certain transmission resource at time 1.
- the transmission resource will be occupied by the user equipment A in each subsequent 100 ms, and the user equipment B will not be transmitted in the subsequent transmission.
- the transmission resource is selected, and other transmission resources are selected for communication. Therefore, the transmission resource is not effectively utilized in the following cycle 2 to cycle 5, resulting in waste of resources.
- embodiments of the present invention provide a D2D communication method and device.
- the technical solution is as follows:
- an embodiment of the present invention provides a D2D communication method, including:
- the first user equipment generates the service period indication information of the first user equipment according to the service period of the data to be sent, adds the service period indication information to the to-be-sent data, and obtains D2D data, where the D2D data includes the The service period indication information; the D2D data is sent.
- the service period indication information of the UE is carried in the D2D data and sent to the receiving end, so that the receiving end can learn the usage of the transmission resource of the UE, including the service period and the occupied time-frequency resource location, etc., thereby
- the idle transmission resource can be determined, and the idle transmission resource is selected for D2D communication to avoid waste of transmission resources, so as to improve utilization of transmission resources.
- the D2D data is service data for scheduling SA information or D2D communication.
- the above information is used as the bearer of the service period indication information, and the flexibility of the implementation manner is increased on the basis of improving the utilization rate.
- the embodiment of the present invention provides a D2D communication method, including: receiving, by a second user equipment, D2D data of a first user equipment, where the D2D data includes service period indication information of the first user equipment; The service period indication information and the time-frequency resource occupation indication information of the first user equipment are determined, and the idle transmission resource is determined; and the D2D communication is performed on the idle transmission resource.
- the D2D data is service data for scheduling SA information or D2D communication.
- the embodiment of the present invention provides a D2D communication method, including: a third user equipment sends a first service period indication information to a base station, where the first service period indication information is used to indicate that a service period of data to be sent is Receiving, by the first base station, first transmission resource indication information, where the first transmission resource indication information is used to indicate that the first transmission resource that meets the first period is met; and D2D is performed on the first transmission resource.
- the second service period indication information is sent to the base station when the service period changes, and the second service period indication information is used to indicate that the service period of the data to be sent changes to the second period, where the first The period is different from the second period.
- the base station allocates a transmission period that can meet the service period of the third user equipment in consideration of the service period of the third user equipment.
- the UE may also send a new service period, that is, the second service period indication information, to the base station, so that the base station is more accurate according to the new service period, when the service period of the third user equipment changes.
- the third user equipment re-allocates the transmission resources.
- the method further includes: receiving, by the third user equipment, the base station The second transmission resource indication information, the second transmission resource indication information is used to indicate that the second transmission resource of the second period is satisfied; and the D2D communication is performed on the second transmission resource.
- the first service period indication information and the second service period indication information are carried in a D2D transmission resource request, a BSR, an RRC signaling, an uplink control channel, or a MAC CE.
- the third user equipment performs on the first transmission resource
- the D2D communication includes: the third user equipment sends D2D data on the first transmission resource, where the D2D data includes the first service period indication information.
- the D2D data is service data for scheduling SA information or D2D communication.
- the embodiment of the present invention provides a D2D communication method, including: receiving, by a base station, first service period indication information sent by a third user equipment, where the first service period indication information is used to indicate a service period of data to be sent.
- a first transmission resource is allocated to the third user equipment according to the first service period indication information, and the first transmission resource indication information is sent to the third user equipment,
- the first transmission resource indication information is used to indicate the first transmission resource; when receiving the second service period indication information of the third user equipment, performing the transmission resource according to the second service period indication information
- the second service period indication information is used to indicate that the service period of the data to be sent changes to the second period.
- the fourth aspect when the second service period indication information of the third user equipment is received, re-allocating the transmission resource according to the second service period indication information, where: The third user equipment allocates the second transmission resource that meets the second period, and sends the second transmission resource indication information to the third user equipment, where the second transmission resource indication information is used to indicate the second transmission resource. .
- the first service period indication information and the second service period indication information are carried in a D2D transmission resource request, a BSR, an RRC signaling, an uplink control channel, or a MAC CE.
- an embodiment of the present invention provides an uplink data transmission method, which is applied to a UE side, and includes: a fourth user equipment sends a third service period indication information to a base station, where the third service period indication information is used to indicate to be The service period of the data to be sent is a third period; the first uplink transmission resource indication information sent by the base station is received, where the first uplink transmission resource indication information is used to indicate that the first uplink transmission resource that meets the third period is Performing uplink data transmission on the first uplink transmission resource.
- the fourth user equipment Notifying, by the fourth user equipment, its own service period, that is, the third service period indication information
- the base station so that the base station allocates the uplink transmission resource that can satisfy the service period of the fourth user equipment, and the service period of the fourth user equipment, when the uplink transmission resource allocation is performed, considering the service period of the fourth user equipment.
- the fourth user equipment may further send a new service period to the base station, that is, the fourth service period indication information, so that the base station re-transmits the uplink transmission resource for the UE more accurately according to the new service period. distribution.
- the method further includes: when the service period changes, the fourth user equipment sends the The base station sends the fourth service period indication information, where the fourth service period indication information is used to indicate that the service period of the data to be sent changes to the fourth period, where the third period is different from the fourth period;
- the second uplink transmission resource indication information sent by the base station where the second uplink transmission resource indication information is used to indicate the second uplink transmission resource that meets the fourth period, and the uplink data transmission is performed on the second uplink transmission resource.
- the third service period indication information is carried in an uplink transmission resource request, a BSR, an RRC signaling, an uplink control channel, or a MAC CE.
- an embodiment of the present invention provides an uplink data transmission method, which is applied to a base station side, and includes: receiving, by a base station, third service period indication information sent by a fourth user equipment, where the third service period indication information is used to indicate The service period of the to-be-sent data is a third period; the fourth user equipment is allocated a first uplink transmission resource that meets the third period, and is sent to the fourth user equipment according to the third service period indication information.
- the first uplink transmission resource indication information where the first uplink transmission resource indication information is used to indicate that the first uplink transmission resource that meets the third period is met.
- the method further includes: when receiving the fourth service period indication information of the fourth user equipment And, according to the fourth service period indication information, re-allocating the uplink transmission resource, where the fourth service period indication information is used to indicate that the service period of the data to be sent changes to the fourth period.
- the reallocating the uplink transmission resource according to the fourth service period indication information includes: allocating, for the fourth user equipment, the fourth period that meets the fourth period And transmitting, by the second uplink transmission resource indication information, the second uplink transmission resource indication information, where the second uplink transmission resource indication information is used to indicate the fourth transmission resource.
- the third service period indication information is carried in an uplink transmission resource request, a BSR, an RRC signaling, an uplink control channel, or a MAC CE.
- the seventh aspect of the present invention provides a user equipment, including:
- a generating unit configured to generate service period indication information of the UE according to a service period of the data to be sent
- An adding unit configured to add the service period indication information to the to-be-sent data, to obtain D2D data, where the D2D data includes the service period indication information;
- a sending unit configured to send the D2D data.
- the D2D data is service data for scheduling SA information or D2D communication.
- the eighth aspect of the present invention provides a user equipment, including:
- a receiving unit configured to receive D2D data of the UE, where the D2D data includes service period indication information of the UE;
- a determining unit configured to determine, according to the service period indication information and the time-frequency resource occupation indication information of the UE, an idle transmission resource
- a sending unit configured to perform D2D communication on the idle transmission resource.
- the D2D data is service data for scheduling SA information or D2D communication.
- a ninth aspect, the embodiment of the present invention provides a user equipment, including:
- a sending unit configured to send the first service period indication information to the base station, where the first service period indication information is used to indicate that the service period of the data to be sent is the first period;
- a receiving unit configured to receive first transmission resource indication information sent by the base station, where the first transmission resource indication information is used to indicate that the first transmission resource that meets the first period is received;
- the sending unit is configured to perform D2D communication on the first transmission resource
- the sending unit is further configured to: when the service period changes, send the second service period indication information to the base station, where the second service period indication information is used to indicate that the service period of the data to be sent changes to the second period, where The first period is different from the second period.
- the receiving unit is further configured to receive second transmission resource indication information sent by the base station, where the second transmission resource indication information is used to indicate that the second period of the second period is met Transmission resource
- the sending unit is further configured to perform D2D communication on the second transmission resource.
- the first service period indication information and the second service period indication information are carried in a D2D transmission resource request, a BSR, an RRC signaling, an uplink control channel, or a MAC CE.
- the sending unit is configured to send D2D data on the first transmission resource, where the D2D data includes the first service period indication information.
- the D2D data is service data for scheduling SA information or D2D communication.
- an embodiment of the present invention provides a base station, including:
- the receiving unit is configured to receive the first service period indication information that is sent by the UE, where the first service period indication information is used to indicate that the service period of the data to be sent is the first period, and the allocation unit is configured to use, according to the first service period, Instructing, the UE allocates a first transmission resource that meets the first period, and the sending unit is configured to send, to the UE, first transmission resource indication information, where the first transmission resource indication information is used to indicate the
- the first transmission resource is further configured to: when receiving the second service period indication information of the UE, re-allocating the transmission resource according to the second service period indication information, where the second service period is The indication information is used to indicate that the service period of the data to be sent changes to the second period.
- the allocating unit is configured to allocate, by the UE, a second transmission resource that meets the second period, where the sending unit is configured to send second transmission resource indication information to the UE, The second transmission resource indication information is used to indicate the second transmission resource.
- the first service period indication information and the second service period indication information are carried in a D2D transmission resource request, a BSR, an RRC signaling, an uplink control channel, or a MAC CE.
- an embodiment of the present invention provides a user equipment, including:
- a sending unit configured to send a third service period indication information to the base station, where the third service period indication information is used to indicate that the service period of the data to be sent is a third period;
- a receiving unit configured to receive first uplink transmission resource indication information that is sent by the base station, where the first uplink transmission resource indication information is used to indicate that the first uplink transmission resource that meets the third period is received;
- the sending unit is further configured to perform uplink data transmission on the first uplink transmission resource.
- the sending unit is further configured to: when the service period changes, send the fourth service period indication information to the base station, where the fourth service period indication information is used to indicate that the information is to be sent.
- the service period of the data changes to a fourth period, wherein the third period is different from the fourth period;
- the receiving unit is further configured to receive the second uplink transmission resource indication information that is sent by the base station, where the second uplink transmission resource indication information is used to indicate that the second uplink transmission resource that meets the fourth period is
- the sending unit is further configured to perform uplink data transmission on the second uplink transmission resource.
- the third service period indication information is carried in an uplink transmission resource request, a BSR, an RRC signaling, an uplink control channel, or a MAC CE.
- the embodiment of the present invention further provides a base station, including:
- a receiving unit configured to receive third service period indication information sent by the UE, where the third service period indication information is used to indicate that the service period of the data to be sent is a third period;
- An allocating unit configured to allocate, according to the third service period indication information, the first uplink transmission resource that meets the third period to the UE;
- a sending unit configured to send the first uplink transmission resource indication information to the UE, where the first uplink transmission resource indication information is used to indicate that the first uplink transmission resource that meets the third period is used.
- the allocating unit is further configured to receive the UE when The fourth service period indication information is used to re-allocate the uplink transmission resource according to the fourth service period indication information, where the fourth service period indication information is used to indicate that the service period of the data to be sent changes to the fourth period.
- the allocating unit is further configured to allocate, by the UE, a second uplink transmission resource that meets the fourth period, where the sending unit is further configured to send a second uplink to the UE. And transmitting the resource indication information, where the second uplink transmission resource indication information is used to indicate the fourth transmission resource.
- the third service period indication information is carried in an uplink transmission resource request, a BSR, an RRC signaling, an uplink control channel, or a MAC CE.
- an embodiment of the present invention provides a user equipment, including: a transmitter, a receiver, and a processor connected to a transmitter and a receiver, respectively.
- the user equipment may further include an antenna and a baseband processing component.
- the common components of the radio frequency processing component, the input and output device, and the like are not limited herein.
- the user equipment is configured to perform the D2D communication method of any one of the foregoing first to sixth aspects by using the foregoing transmitter, the receiver, and the processor to avoid waste of transmission resources, so as to improve utilization of transmission resources. .
- an embodiment of the present invention provides a base station, including: a transmitter, a receiver, a memory, and a processor respectively connected to the transmitter, the receiver, and the memory.
- the base station may also include a common component such as an antenna, a baseband processing component, a medium-frequency radio processing component, and an input/output device, and the embodiment of the present invention is not limited thereto.
- the base station is configured to perform the D2D communication method of any one of the above-mentioned first to sixth aspects by the above-mentioned transmitter, receiver, and processor to avoid waste of transmission resources to improve utilization of transmission resources.
- the service period indication information is used to indicate a service period of the service data of the UE. For example, if the service period is 100 ms, the UE sends the service data every 100 ms.
- the service period indication information, the first service period indication information, the second service period indication information, the third service period indication information, and the fourth service period indication information may be adopted in any one of the following manners.
- the next packet represented in bit format is located relative to In the first cycle of the current cycle; or, the periodic interval between adjacent data packets represented by the bit form; or, the minimum number of cycles included in the service cycle represented by the bit form; or, using bits
- the number of resource pool periods included in the service period represented by the form; or, the number of radio frames included in the service period indicated by the bit form; or the sub-inclusion included in the service period represented by the bit form The number of frames; or, the number of periods of the side line sync signal included in the service period indicated by the bit form.
- FIG. 1A is a schematic diagram of an implementation scenario of mode 1 in the background art.
- FIG. 1B is a schematic diagram of an implementation scenario of mode 2 in the background art.
- FIG. 1C is a schematic diagram showing the service cycle of the user equipment A.
- FIG. 2 is a schematic diagram of an implementation scenario of a D2D communication method according to an embodiment of the present invention.
- FIG. 3 is a schematic diagram of multiple service periods of a user equipment according to an embodiment of the present invention.
- FIG. 4 is a schematic diagram of an interaction process of a D2D end-to-end communication method according to an embodiment of the present invention.
- FIG. 5 is a schematic diagram of an interaction process of a D2D end-to-end communication method according to an embodiment of the present invention.
- FIG. 6 is a schematic diagram of an interaction process of performing a D2D communication method in mode 1 according to an embodiment of the present invention.
- FIG. 7 is a schematic diagram of an interaction process of a D2D communication method according to an embodiment of the present invention.
- FIG. 8 is a schematic diagram of an interaction process of an uplink data transmission method according to an embodiment of the present invention.
- FIG. 9 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
- FIG. 10 is a schematic structural diagram of a base station according to an embodiment of the present invention.
- FIG. 11 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
- FIG. 12 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
- FIG. 13 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
- FIG. 14 is a schematic structural diagram of a base station according to an embodiment of the present invention.
- FIG. 15 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
- FIG. 16 is a schematic structural diagram of a base station according to an embodiment of the present invention.
- FIG. 2 is a schematic diagram of an implementation scenario provided by an embodiment of the present invention.
- the implementation scenario includes a UE (User Equipment) and a base station, where the UE provided in the embodiment of the present invention may refer to an in-vehicle communication system, a user equipment installed on a vehicle, or some such as a smart phone or User equipment held by in-vehicle users such as handheld devices, or handheld terminals and wearable devices for pedestrians and cyclists, such as smart watches, smart helmets, and the like.
- a base station may refer to a device having a management function of a radio resource, capable of communicating with a user equipment, or as a central controller to assist direct communication between user equipments.
- the service period indication information, the first service period indication information, the second service period indication information, the third service period indication information, and the fourth service period indication information that are involved in the following embodiments may adopt any one of the following representation methods:
- the first representation is located in the first few cycles relative to the current cycle.
- FIG. 3 is a schematic diagram of multiple service periods provided by an embodiment of the present invention.
- 100ms represents a minimum packet period
- each period includes one or more resource pools
- a solid line cylinder represents a time resource of the first resource pool
- the UE transmits data in the resource pool, and in a subsequent transmission period Reserve the same resources for sending data.
- 0001 indicates that the next data packet is sent in the first period relative to the current period, that is, every minimum period (every 100 ms);
- 0011 indicates that the next data packet is sent in the third period relative to the current period, that is, every three minimum periods (every 300 ms);
- 0100 indicates that the next data packet is sent in the fourth period relative to the current period, that is, every four minimum periods (every 400 ms);
- the second representation method uses a periodic interval between adjacent data packets represented by bit patterns.
- the minimum period of the data packet may be protocol specification, pre-configuration, or base station configuration.
- 0001 indicates that the interval between adjacent two data packets is 1, that is, every two minimum periods (every 200 ms) are sent by the data packet;
- 0100 indicates that the interval between adjacent two data packets is 4, that is, every five minimum periods (every 500 ms) are sent by the data packet;
- 1001 indicates that the interval between adjacent two data packets is 9, that is, every ten minimum periods (every 1000 ms) are sent;
- the third representation method uses the minimum number of periods included in the service period represented by the bit form.
- the minimum period of the data packet may be protocol specification, pre-configuration, or base station configuration.
- the service period is 1 minimum period T, that is, one data packet is sent every 100 ms;
- the service period is 2 minimum periods T, that is, one data packet is sent every 200 ms;
- the service period is 3 minimum periods T, that is, one data packet is sent every 300 ms;
- the service period is 4 minimum periods T, that is, one data packet is sent every 400 ms;
- the service period is 10 minimum periods T, that is, one data packet is sent every 1000 ms;
- the service period may be 1 minimum period T from 0000, and so on. This example does not specifically limit this.
- the service period may also adopt other time units, for example, a resource pool period, a radio frame, a subframe, etc., and the resource pool period may refer to a system configuration SA resource pool period or a data resource pool period.
- the resource pool period indicates the number of subframes included in the resource pool. For example, the resource pool period is 50 ms, indicating that the resource pool includes 50 subframes. To illustrate its implementation, the following describes the case where the resource pool period is a time unit:
- the fourth representation method uses the number of resource pool periods included in the service period represented by the bit form.
- the exemplary description is not a complete example. For other values of N, there may be other representations.
- the resource pool period may be protocol specification, pre-configured, or base station configuration.
- the service period is 2 resource pool periods P, that is, one data packet is sent every 100 ms;
- the service period is 4 resource pool periods P, that is, one data packet is sent every 200 ms;
- the service period is 6 resource pool periods P, that is, one data packet is sent every 300 ms;
- the service period is 8 resource pool periods P, that is, one data packet is sent every 400 ms;
- the service period is 20 resource pool periods P, that is, one data packet is sent every 1000 ms;
- 0001 may indicate that the service period is one resource pool period P and so on, which is not specifically limited in this embodiment of the present invention.
- the service period can also use radio frames as time units, for example:
- the fifth representation method uses the number of radio frames included in the service period indicated by the bit form.
- the service period is 10 radio frames S, that is, one data packet is sent every 100 ms;
- the service period is 20 radio frames S, that is, one data packet is sent every 200 ms;
- the service period is 30 radio frames S, that is, one data packet is sent every 300 ms;
- the service period is 40 radio frames S, that is, one data packet is sent every 400 ms;
- the service period is 100 radio frames S, that is, one data packet is sent every 1000 ms;
- 0001 may indicate that the service period is 1 radio frame S, and so on, which is not specifically limited in this embodiment of the present invention.
- the service period can also use subframes as time units, for example:
- the sixth representation method uses the number of subframes included in the service period indicated by the bit form.
- the service period is 100 subframes F, that is, one data packet is sent every 100 ms;
- the service period is 200 subframes F, that is, one data packet is sent every 200 ms;
- the service period is 300 subframes F, that is, one data packet is sent every 300 ms;
- the service period is 400 subframes F, that is, one data packet is sent every 400 ms;
- the service period is 1000 subframes F, that is, one data packet is sent every 1000 ms;
- the service period may be 100 subframes F from 0000, and so on. This is not specifically limited.
- the service cycle may also adopt a period of a side line synchronization signal as a time unit, wherein the side line synchronization signal is a synchronization signal sent by the terminal during D2D communication, and is used for time-frequency synchronization between the receiving end and the transmitting end, and the side line synchronization signal occupies the system.
- the period of the side line synchronization signal in the D2D system is 40 ms.
- the seventh representation method uses the number of periods of the side line sync signal included in the service cycle indicated by the bit form.
- the following are merely illustrative examples and are not complete examples. Other values for N may have other representations.
- the service period is the period SS of one side line synchronization signal, that is, one data is sent every 40 ms. package;
- the service period is a period SS of two side line synchronization signals, that is, one data packet is sent every 80 ms;
- FIG. 4 is a schematic diagram of an interaction process of a D2D end-to-end communication method according to an embodiment of the present invention. Referring to Figure 4, the interaction process includes:
- the UE1 generates service period indication information of the UE1 according to the service period of the data to be sent.
- the UE1 sends the SA information.
- the service period indication information is used to indicate the service period of the service data of the UE1. If the service period is 100 ms, the UE1 sends the service data every 100 ms.
- the service period indication information may be represented by any one of the foregoing representation manners, and is not described herein.
- the UE2 determines the idle transmission resource according to the service period indication information of the UE1 and the time-frequency resource occupation indication information in the SA information.
- the time-frequency resource occupation indication information is included in the SA information, and the time-frequency resource occupation indication information may indicate that the UE1 uses the time-frequency resource location when transmitting the DATA, and the SA information also carries the service period indication information. So that UE2 can learn the UE1 by using the SA information. Depending on the occupancy situation, UE2 can know which time-frequency resources are not occupied at any time, based on the occupancy situation, UE2 can obtain the DATA of the time-frequency resources. That is, UE2 can learn the idle transmission resources.
- the UE2 performs D2D communication on the idle transmission resource.
- UE2 may perform D2D communication with other UEs on the idle transmission resource, such as sending SA information on the idle transmission resource, or sending DATA on the idle transmission resource.
- FIG. 5 is a schematic diagram of an interaction process of a D2D end-to-end communication method according to an embodiment of the present invention. Referring to Figure 5, the interaction process includes:
- the UE1 sends the SA information, where the SA information is used to indicate the status information of the service data, where the status information includes at least the time-frequency resource occupation indication information of the service data.
- the status information may further include: MCS information, frequency hopping indication, timing advance information, receiving group ID information, and the like.
- the UE1 generates the service period indication information of the UE1 according to the service period of the data to be sent.
- the UE1 adds the service period indication information to the service data to be sent, and obtains service data, where the service data includes service period indication information of the UE1.
- UE1 sends service data.
- the UE2 determines the state information of the service data according to the SA information of the UE1.
- the UE2 receives the service data on the time-frequency resource indicated by the time-frequency resource occupation indication information in the status information according to the status information, where the service data includes the service period indication information of the UE1.
- the foregoing determining and receiving process may be the same as the existing process of receiving service data based on the SA information, and details are not described herein.
- the UE2 according to the service period indication information of the UE1 and the time-frequency resource occupation index in the SA information Indicates information to determine idle transmission resources.
- the UE2 performs D2D communication on the idle transmission resource.
- FIG. 6 is a schematic diagram of an interaction process of the D2D communication method in mode 1 according to an embodiment of the present invention. Referring to Figure 6, the interaction process includes:
- the UE3 sends the first service period indication information to the base station, where the first service period indication information is used to indicate that the service period of the data to be sent is the first period.
- the first service period indication information may be carried in a D2D transmission resource request, a BSR, an RRC (Radio Resource Control) signaling, an uplink control channel, or a MAC CE.
- the base station When the base station receives the first service period indication information sent by the UE3, the base station allocates, according to the first service period indication information, the first transmission resource that meets the first period.
- the step 602 is performed when the D2D transmission resource request is received, and the first service period indication information is carried in the BSR, the RRC signaling, and the uplink.
- the base station may perform the allocation of the transmission resource for the UE3 according to the received first service period indication information and the D2D transmission resource request after receiving the D2D transmission resource request.
- the first transmission resource that meets the first period refers to the first transmission resource that can satisfy the first period in the service period, and the base station allocates the semi-static transmission resource according to the first period information to perform data for the UE3. send.
- the first period is 100 ms
- the first transmission resource is a set of time-frequency resources, that is, includes a time-frequency for SA transmission. Resources, including time-frequency resources for data transmission.
- the base station allocates M1 subframes for the SA every 100 ms, allocates N1 physical resource blocks for SA transmission on each subframe, allocates M2 subframes for data, and allocates N2 subframes for each subframe.
- the physical resource block is used for data transmission, and UE3 transmits data using the same time-frequency resource every 100 ms.
- the base station sends first transmission resource indication information to the UE3, where the first transmission resource indication information is used to indicate the first transmission resource.
- the first transmission resource indicated by the first transmission resource indication information may be a semi-static transmission resource, that is, the UE3 may perform D2D transmission using the first transmission resource until resource allocation is performed again.
- the UE3 When the UE3 receives the first transmission resource indication information sent by the base station, perform D2D communication on the first transmission resource.
- the process of the D2D communication may be the same as the above step 403, and details are not described herein.
- the UE3 sends the second service period indication information to the base station, where the second service period indication information is used to indicate that the service period of the data to be sent changes to the second period, where the One cycle is different from the second cycle.
- the second service period indication information is the same as the first service period indication information, and may also be carried in the D2D transmission resource request, the BSR, the RRC signaling, the uplink control channel, or the MAC CE.
- the service period may change depending on the environment or system settings. For example, if the service period changes from 100ms to 200ms, if some D2D communication is still based on the first transmission resource, some of the transmission resources will be In order to avoid waste of resources, UE3 needs to request the base station to re-allocate resources and send new service period indication information to the base station when it detects that the service period of the data to be sent is different from the previous service transmission period.
- the base station When receiving the second service period indication information of the UE3, the base station re-allocates the transmission resource according to the second service period indication information, where the second service period indication information is used to indicate data to be sent.
- the business cycle changes to the second cycle.
- re-allocation of resources can ensure normal transmission of service data of UE3, and if the first period is smaller than the second period, re-allocation of resources can avoid waste of transmission resources and improve Transfer resource utilization.
- the base station allocates a second transmission resource that meets the second period to the UE, and sends second transmission resource indication information to the UE, where the second transmission resource indication The information is used to indicate the second transmission resource.
- the UE3 receives the second transmission resource indication information sent by the base station, the second transmission resource indication information is used to indicate that the second transmission resource that meets the second period is met, and the UE3 performs the second transmission resource. D2D communication.
- the base station when the service period of the data to be transmitted changes, the base station can be triggered to reallocate the transmission resource in time, and when the allocation is made, the changed service period is fully considered, so that the allocated transmission resource can satisfy the change.
- the demand of the post-business cycle avoids the waste of transmission resources and improves the utilization of transmission resources.
- the UE-assigned redistribution process is more real-time and correspondingly improves the flexibility of the base station in transmission resource allocation.
- FIG. 7 is a schematic diagram of an interaction process of a D2D communication method according to an embodiment of the present invention. Referring to Figure 7, the interaction process includes:
- the UE4 sends the first service period indication information to the base station, where the first service period indication information is used to indicate that the service period of the data to be sent is the first period.
- the first service period indication information is the same as the foregoing step 601, and details are not described herein.
- the base station When the base station receives the first service period indication information sent by the UE4, the base station allocates, according to the first service period indication information, the first transmission resource that meets the first period.
- the base station sends first transmission resource indication information to the UE4, where the first transmission resource indication information is used to indicate the first transmission resource.
- steps 702 to 703 are the same as steps 602 to 603, and are not described herein.
- the UE4 When receiving the first transmission resource indication information sent by the base station, the UE4 sends D2D data on the first transmission resource, where the D2D data includes the first service period indication information.
- the D2D data is a service data that allocates SA information or D2D communication for scheduling.
- the step 704 is the same as the D2D communication process shown in FIG. 4 and FIG. 5, and the first service period indication information is carried in the D2D data (for example, the SA information or the service data), so that other UEs that receive the D2D data can be enabled. And determining the idle transmission resource according to the first service period indication information and the time-frequency resource occupation indication information of the UE, and performing D2D communication on the idle transmission resource.
- the first service period indication information is carried in the D2D data (for example, the SA information or the service data), so that other UEs that receive the D2D data can be enabled.
- determining the idle transmission resource according to the first service period indication information and the time-frequency resource occupation indication information of the UE, and performing D2D communication on the idle transmission resource.
- the UE4 sends the second service period indication information to the base station, where the second service period indication information is used to indicate that the service period of the data to be sent changes to the second period, where the One cycle is different from the second cycle.
- the base station When receiving the second service period indication information of the UE4, the base station re-allocates the transmission resource according to the second service period indication information, where the second service period indication information is used to indicate data to be sent.
- the business cycle changes to the second cycle.
- the steps 705 to 706 are the same as the above steps 605 and 606, and are not described herein.
- the base station when the service period of the data to be transmitted changes, the base station can be triggered to reallocate the transmission resource in time, and when the allocation is made, the changed service period is fully considered, so that the allocated transmission resource can satisfy the change.
- the demand of the post-business cycle avoids the waste of transmission resources and improves the utilization of transmission resources.
- the UE-assigned redistribution process is more real-time and correspondingly improves the flexibility of the base station in transmission resource allocation.
- the receiving UE since the UE 4 occupying the first transmission resource also provides its own transmission resource occupancy to the receiving UE, the receiving UE can detect other users (including the mode 1 user and the mode when listening to the available resources). 2) The first service period indication information carried in the D2D data, so as to know the resource occupancy situation, and further improve the utilization of the transmission resource.
- the D2D communication may also be performed by the base station, and the transmitting UE sends its own service data to the base station, and then broadcasts by the base station. Then, before the transmitting UE performs the service data transmission, the D2D communication needs to be performed.
- the uplink transmission resource request is sent to the base station, and the base station allocates semi-static transmission resources for the terminal for uplink data transmission of the terminal. At this point, once the semi-static transmission resource is allocated, If the service period of the UE at the transmitting end changes, for example, the service period changes from 100 ms to 200 ms, the uplink transmission resource is also wasted. To this end, the method of FIG. 8 is provided.
- FIG. 8 is a schematic diagram of an interaction process of an uplink data transmission method according to an embodiment of the present invention. Referring to Figure 8, the interaction process includes:
- the UE5 sends the third service period indication information to the base station, where the third service period indication information is used to indicate that the service period of the data to be sent is the third period.
- the third service period indication information is carried in an uplink transmission resource request, a BSR, an RRC signaling, an uplink control channel, or a MAC CE.
- the base station When the base station receives the third service period indication information sent by the UE5, the base station allocates, according to the third service period indication information, the first uplink transmission resource that meets the third period.
- the UE 5 can notify the UE of the third service period indication information, so that the base station can perform uplink resource allocation for the UE5 more accurately when performing uplink resource allocation, thereby correspondingly avoiding waste of uplink transmission resources, thereby improving the Uplink transmission resource utilization.
- the base station sends the first uplink transmission resource indication information to the UE, where the first uplink transmission resource indication information is used to indicate that the first uplink transmission resource that meets the third period is met.
- the UE5 When the UE5 receives the first uplink transmission resource indication information sent by the base station, perform uplink data transmission on the first uplink transmission resource.
- the UE5 may also perform the following steps:
- the UE5 sends the fourth service period indication information to the base station, where the fourth service period indication information is used to indicate that the service period of the data to be sent changes to the fourth period, where the The three cycles are different from the fourth cycle.
- the base station When receiving the fourth service period indication information of the UE, the base station allocates, to the UE, a second uplink transmission resource that meets the fourth period.
- the step 806 is actually a process in which the base station re-allocates the uplink transmission resource according to the fourth service period indication information.
- the base station may also allocate the transmission resource that is no longer occupied by the UE 5. Give other UEs.
- the base station sends the second uplink transmission resource indication information to the UE, where the second uplink transmission resource indication information is used to indicate the fourth transmission resource.
- the UE5 When the UE5 receives the second uplink transmission resource indication information sent by the base station, perform uplink data transmission on the second uplink transmission resource.
- the request process of the uplink transmission resource and the process of re-requesting based on the service cycle change are similar to the D2D transmission resource request process provided in the foregoing embodiment and the process of re-requesting based on the service cycle change, and the specific process is not performed here. Narration.
- the D2D communication process can trigger the reallocation of the uplink transmission resources by the base station in time when the service period of the data to be sent changes, and fully consider the changed service period when allocating, so that the allocated uplink transmission resources can be The requirements of the changed service cycle are met, the waste of uplink transmission resources is avoided, and the utilization of uplink transmission resources is improved. Further, the re-distribution process triggered by the UE is more real-time and correspondingly improves the flexibility of the base station in uplink transmission resource allocation.
- FIG. 9 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
- the user equipment includes a transmitter, a receiver, a memory, and a processor coupled to the transmitter, the receiver, and the memory, respectively.
- the user equipment may also include a common component such as an antenna, a baseband processing component, a medium-frequency radio processing component, and an input/output device, and the embodiment of the present invention is not limited thereto.
- the user equipment is configured to perform the D2D communication method on the user equipment side provided by any of the foregoing embodiments of FIG. 4 to FIG.
- FIG. 10 is a schematic structural diagram of a base station according to an embodiment of the present invention.
- the base station includes a transmitter, a receiver, a memory, and a processor coupled to the transmitter, receiver, and memory, respectively.
- the base station may also include a common component such as an antenna, a baseband processing component, a medium-frequency radio processing component, and an input/output device, and the embodiment of the present invention is not limited thereto.
- the base station is configured to perform the D2D communication method on the base station side provided by any of the foregoing embodiments of FIG. 6 to FIG.
- FIG. 11 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
- the user equipment includes:
- the generating unit 1101 is configured to generate service period indication information of the UE according to a service period of the data to be sent;
- the adding unit 1102 is configured to add the service period indication information to the to-be-sent data to obtain D2D data, where the D2D data includes the service period indication information;
- the sending unit 1103 is configured to send the D2D data.
- the service period indication information is:
- the next packet represented in bit format is located in the first cycle relative to the current cycle; or,
- the D2D data is scheduled to allocate SA information or service data of D2D communication.
- FIG. 12 is a schematic structural diagram of a user equipment according to an embodiment of the present invention. Referring to FIG. 12, the method includes:
- the receiving unit 1201 is configured to receive D2D data of the UE, where the D2D data includes service period indication information of the UE;
- the determining unit 1202 is configured to determine, according to the service period indication information and the time-frequency resource occupation indication information of the UE, an idle transmission resource;
- the sending unit 1203 is configured to perform D2D communication on the idle transmission resource.
- the service period indication information is:
- the next packet represented in bit format is located in the first cycle relative to the current cycle; or,
- FIG. 13 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
- the user equipment includes:
- the sending unit 1301 is configured to send the first service period indication information to the base station, where the first service period indication information is used to indicate that the service period of the data to be sent is the first period;
- the receiving unit 1302 is configured to receive first transmission resource indication information that is sent by the base station, where the first transmission resource indication information is used to indicate that the first transmission resource that meets the first period is received;
- the sending unit 1301 is configured to perform D2D communication on the first transmission resource.
- the sending unit 1301 is further configured to: when the service period changes, send the second service period indication information to the base station, where the second service period indication information is used to indicate that the service period of the data to be sent changes to the second period, The first period is different from the second period.
- the receiving unit 1302 is further configured to receive second transmission resource indication information that is sent by the base station, where the second transmission resource indication information is used to indicate that the second transmission resource that meets the second period is received;
- the sending unit 1301 is further configured to perform D2D communication on the second transmission resource.
- the first service period indication information and the second service period indication information are carried in a D2D transmission resource request, a BSR, an RRC signaling, an uplink control channel, or a MAC CE.
- the sending unit 1301 is configured to send D2D data on the first transmission resource, where the D2D data includes the first service period indication information.
- the D2D data is scheduled to allocate SA information or service data of D2D communication.
- the method for expressing the first service period indication information and the second service period indication information is:
- the next packet represented in bit format is located in the first cycle relative to the current cycle; or,
- FIG. 14 is a schematic structural diagram of a base station according to an embodiment of the present invention.
- the base station includes: a receiving unit 1401, configured to receive first service period indication information sent by the UE, where the first service period indication information is used to indicate that a service period of data to be sent is a first period; and an allocating unit 1402 And the first transmission resource that meets the first period is allocated to the UE according to the first service period indication information, and the sending unit 1403 is configured to send, to the UE, first transmission resource indication information, where The first transmission resource indication information is used to indicate the first transmission resource, and the allocation unit 1402 is further configured to: when receiving the second service period indication information of the UE, according to the second service period indication information, The transmission resource is redistributed, and the second service period indication information is used to indicate that the service period of the data to be sent changes to the second period.
- the allocating unit 1402 is configured to allocate, by the UE, a second transmission resource that meets the second period, and send second transmission resource indication information to the UE, where the second transmission resource indication information is used. Indicating the second transmission resource.
- the first service period indication information and the second service period indication information are carried in a D2D transmission resource request, a BSR, an RRC signaling, an uplink control channel, or a MAC CE.
- the method for expressing the first service period indication information and the second service period indication information is:
- the next packet represented in bit format is located in the first cycle relative to the current cycle; or,
- FIG. 15 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
- the user equipment includes:
- the sending unit 1501 is configured to send a third service period indication information to the base station, where the third service period indication information is used to indicate that the service period of the data to be sent is a third period;
- the receiving unit 1502 is configured to receive the first uplink transmission resource indication information that is sent by the base station, where the first uplink transmission resource indication information is used to indicate that the first uplink transmission resource that meets the third period is received;
- the sending unit 1501 is further configured to perform uplink data transmission on the first uplink transmission resource.
- the sending unit 1501 is further configured to: when the service period changes, send the fourth service period indication information to the base station, where the fourth service period indication information is used to indicate that the service period change of the data to be sent is a fourth period, wherein the third period is different from the fourth period;
- the receiving unit 1502 is further configured to receive the second uplink transmission resource indication information that is sent by the base station, where the second uplink transmission resource indication information is used to indicate that the second uplink transmission resource that meets the fourth period is received;
- the sending unit 1501 is further configured to perform uplink data transmission on the second uplink transmission resource.
- the third service period indication information is carried in an uplink transmission resource request, a BSR, an RRC signaling, an uplink control channel, or a MAC CE.
- the method for indicating the third service period indication information is:
- the next packet represented in bit format is located in the first cycle relative to the current cycle; or,
- FIG. 16 is a schematic structural diagram of a base station according to an embodiment of the present invention.
- the base station includes:
- the receiving unit 1601 is configured to receive the third service period indication information that is sent by the UE, where the third service period indication information is used to indicate that the service period of the data to be sent is a third period;
- the allocating unit 1602 is configured to allocate, according to the third service period indication information, the first uplink transmission resource that meets the third period to the UE;
- the sending unit 1603 is configured to send the first uplink transmission resource indication information to the UE, where the first uplink transmission resource indication information is used to indicate that the first uplink transmission resource that meets the third period is received.
- the allocating unit 1602 is further configured to, when receiving the fourth service period indication information of the UE, re-allocate the uplink transmission resource according to the fourth service period indication information, where the fourth service is The period indication information is used to indicate that the service period of the data to be sent changes to the fourth period.
- the allocating unit 1602 is further configured to allocate, by the UE, a second uplink transmission resource that meets the fourth period, where the sending unit 1603 is further configured to send the second uplink transmission resource indication information to the UE.
- the second uplink transmission resource indication information is used to indicate the fourth transmission resource.
- the third service period indication information is carried in an uplink transmission resource request, a BSR, an RRC signaling, an uplink control channel, or a MAC CE.
- the method for indicating the third service period indication information is:
- the next packet represented in bit format is located in the first cycle relative to the current cycle; or,
- a person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium.
- the storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.
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Abstract
本发明提供了一种D2D通信方法及设备,通过将UE的业务周期指示信息携带在D2D数据中发送至接收端,使得接收端可以通过侦听等方式获知该UE的传输资源占用情况,包括业务周期以及所占用的时频资源位置等,从而能够确定空闲传输资源,并选取该空闲传输资源进行D2D通信,以避免传输资源的浪费,以提高传输资源的利用率。
Description
本发明涉及车联网领域,特别涉及一种D2D通信方法及设备。
近年来汽车网络越来越受到人们的关注,通过车车通信或者车与路边单元之间的通信从而提高道路交通的安全性、可靠性,提升交通通行效率。在车联网中,为保证车辆安全行驶,车车之间需要周期性的交互信息,包含车的位置、速度、状态等信息,通过单跳的方式广播给周围车辆,为此,可以采用D2D(Device to Device,端到端)通信,将车辆看做是一个UE(User Equipment,用户设备),以进行车辆间的通信。
D2D通信根据其传输模式的不同,具体分为D2D发现模式(即D2D discovery模式)和D2D通信模式(即D2D communication模式)。在D2D communication模式中,数据发送采用SA(Schedulling Assignment,调度分配)+DATA(业务数据)模式。用户设备有业务数据需要发送时,首先发送一个SA信息,SA信息指示从发送端发出的业务数据的状态信息,包括数据的时频资源占用指示信息,MCS信息,跳频指示,定时提前信息,接收组ID信息等。作为接收端的用户设备成功接收到并解码SA信息后,会在SA信息指示的时频资源位置接收相应的业务数据,并按SA信息指示的调制编码方式进行解码。
其中,D2D communication模式还可以分为两种工作模式:在模式1中,如图1A所示,基站为每个D2D用户设备在资源池内分配确定的时频资源,以用于该用户设备进行D2D的传输;模式2中,如图1B所示,用户设备自主的在SA信息资源池内随机选取SA资源,在业务数据资源池中随机选取数据资
源进行D2D通信。
对于车联网系统中UE之间的交互来说,其待发送数据的业务周期可能随着实际行驶情况的变化而发生变化,如果作为发送端的UE一直占用适用于变化前业务周期的传输资源,则可能造成传输资源的浪费,大大降低传输资源的利用率。为了更明确的说明该问题,参见图1C,图1C表示某个用户设备A的业务周期,该用户设备A的发送周期是500ms,用户设备A在时刻1选取了半静态传输资源,并在该半静态传输资源上进行D2D通信。其他用户设备B在时刻1侦听到该用户设备A占用了某个传输资源,会认为在随后的每个100ms中,该传输资源都会被用户设备A占用,用户设备B不会在随后的传输中选取该传输资源,而是选取其他传输资源进行通信。因此,会导致该传输资源在后面周期2至周期5并没有被有效利用,导致资源浪费。
发明内容
为了解决浪费传输资源,传输资源利用率低的问题,本发明实施例提供了一种D2D通信方法及设备。所述技术方案如下:
第一方面,本发明实施例提供了一种D2D通信方法,包括:
第一用户设备根据待发送数据的业务周期,生成第一用户设备的业务周期指示信息;将所述业务周期指示信息添加至所述待发送数据中,得到D2D数据,所述D2D数据包括所述业务周期指示信息;发送所述D2D数据。通过将UE的业务周期指示信息携带在D2D数据中发送至接收端,使得接收端可以通过侦听等方式获知该UE的传输资源占用情况,包括业务周期以及所占用的时频资源位置等,从而能够确定空闲传输资源,并选取该空闲传输资源进行D2D通信,以避免传输资源的浪费,以提高传输资源的利用率。
在第一方面的一种可能设计中,所述D2D数据为调度分配SA信息或D2D通信的业务数据。将上述任一种信息作为业务周期指示信息的承载,在提高了利用率的基础上,增加该实施方式的灵活性。
第二方面,本发明实施例提供了一种D2D通信方法,包括:第二用户设备接收第一用户设备的D2D数据,所述D2D数据包括所述第一用户设备的业务周期指示信息;根据所述第一用户设备的业务周期指示信息和时频资源占用指示信息,确定空闲传输资源;在所述空闲传输资源上进行D2D通信。
在第二方面的一种可能设计中,所述D2D数据为调度分配SA信息或D2D通信的业务数据。
第三方面,本发明实施例提供了一种D2D通信方法,包括:第三用户设备向基站发送第一业务周期指示信息,所述第一业务周期指示信息用于指示待发送数据的业务周期为第一周期;接收所述基站发送的第一传输资源指示信息,所述第一传输资源指示信息用于指示满足所述第一周期的第一传输资源;在所述第一传输资源上进行D2D通信;当业务周期发生变化时,向所述基站发送第二业务周期指示信息,所述第二业务周期指示信息用于指示待发送数据的业务周期变化为第二周期,其中,所述第一周期与所述第二周期不同。通过由第三用户设备将自身的业务周期告知给基站,从而使得基站在进行传输资源分配时,考虑到该第三用户设备的业务周期,为该第三用户设备分配能够满足其业务周期的传输资源,而在第三用户设备的业务周期发生变化时,该UE还可以向该基站发送新的业务周期,也即是第二业务周期指示信息,以使得基站根据新的业务周期更准确的为该第三用户设备重新进行传输资源的分配。
在第三方面的一种可能设计中,当业务周期发生变化时,第三用户设备向所述基站发送第二业务周期指示信息之后,所述方法还包括:第三用户设备接收所述基站发送的第二传输资源指示信息,所述第二传输资源指示信息用于指示满足所述第二周期的第二传输资源;在所述第二传输资源上进行D2D通信。
在第三方面的一种可能设计中,所述第一业务周期指示信息和所述第二业务周期指示信息承载于D2D传输资源请求、BSR、RRC信令、上行控制信道或MAC CE中。
在第三方面的一种可能设计中,第三用户设备在所述第一传输资源上进行
D2D通信包括:第三用户设备在所述第一传输资源上发送D2D数据,所述D2D数据包括所述第一业务周期指示信息。
在第三方面的一种可能设计中,所述D2D数据为调度分配SA信息或D2D通信的业务数据。
第四方面,本发明实施例提供了一种D2D通信方法,包括:基站接收第三用户设备发送的第一业务周期指示信息,所述第一业务周期指示信息用于指示待发送数据的业务周期为第一周期;根据所述第一业务周期指示信息,为所述第三用户设备分配满足所述第一周期的第一传输资源;向所述第三用户设备发送第一传输资源指示信息,所述第一传输资源指示信息用于指示所述第一传输资源;当接收到所述第三用户设备的第二业务周期指示信息时,根据所述第二业务周期指示信息,对传输资源进行重新分配,所述第二业务周期指示信息用于指示待发送数据的业务周期变化为第二周期。
在第四方面的一种可能设计中,当接收到所述第三用户设备的第二业务周期指示信息时,根据所述第二业务周期指示信息,对传输资源进行重新分配包括:基站为所述第三用户设备分配满足所述第二周期的第二传输资源,向所述第三用户设备发送第二传输资源指示信息,所述第二传输资源指示信息用于指示所述第二传输资源。
在第四方面的一种可能设计中,所述第一业务周期指示信息和所述第二业务周期指示信息承载于D2D传输资源请求、BSR、RRC信令、上行控制信道或MAC CE中。
第五方面,本发明实施例提供了一种上行数据传输方法,应用于UE侧,包括:第四用户设备向基站发送第三业务周期指示信息,所述第三业务周期指示信息用于指示待发送数据的业务周期为第三周期;接收所述基站发送的第一上行传输资源指示信息,所述第一上行传输资源指示信息用于指示满足所述第三周期的第一上行传输资源;在所述第一上行传输资源上进行上行数据传输。通过由第四用户设备将自身的业务周期也即是第三业务周期指示信息告知给
基站,从而使得基站在进行上行传输资源分配时,考虑到该第四用户设备的业务周期,为该第四用户设备分配能够满足其业务周期的上行传输资源,而在第四用户设备的业务周期发生变化时,该第四用户设备还可以向该基站发送新的业务周期,也即是第四业务周期指示信息,以使得基站根据新的业务周期更准确的为该UE重新进行上行传输资源的分配。
在第五方面的一种可能设计中,第四用户设备在所述第一上行传输资源上进行上行数据传输之后,所述方法还包括:当业务周期发生变化时,第四用户设备向所述基站发送第四业务周期指示信息,所述第四业务周期指示信息用于指示待发送数据的业务周期变化为第四周期,其中,所述第三周期与所述第四周期不同;接收所述基站发送的第二上行传输资源指示信息,所述第二上行传输资源指示信息用于指示满足所述第四周期的第二上行传输资源;在所述第二上行传输资源上进行上行数据传输。
在第五方面的一种可能设计中,所述第三业务周期指示信息承载于上行传输资源请求、BSR、RRC信令、上行控制信道或MAC CE中。
第六方面,本发明实施例提供了一种上行数据传输方法,应用于基站侧,包括:基站接收第四用户设备发送的第三业务周期指示信息,所述第三业务周期指示信息用于指示待发送数据的业务周期为第三周期;根据所述第三业务周期指示信息,为所述第四用户设备分配满足所述第三周期的第一上行传输资源;向所述第四用户设备发送第一上行传输资源指示信息,所述第一上行传输资源指示信息用于指示满足所述第三周期的第一上行传输资源。
在第六方面的一种可能设计中,向所述第四用户设备发送第三传输资源指示信息之后,所述方法还包括:当接收到所述第四用户设备的第四业务周期指示信息时,根据所述第四业务周期指示信息,对上行传输资源进行重新分配,所述第四业务周期指示信息用于指示待发送数据的业务周期变化为第四周期。
在第六方面的一种可能设计中,根据所述第四业务周期指示信息,对上行传输资源进行重新分配包括:为所述第四用户设备分配满足所述第四周期的第
二上行传输资源,向所述第四用户设备发送第二上行传输资源指示信息,所述第二上行传输资源指示信息用于指示所述第四传输资源。
在第六方面的一种可能设计中,所述第三业务周期指示信息承载于上行传输资源请求、BSR、RRC信令、上行控制信道或MAC CE中。
第七方面,本发明实施例提供了一种用户设备,包括:
生成单元,用于根据待发送数据的业务周期,生成UE的业务周期指示信息;
添加单元,用于将所述业务周期指示信息添加至所述待发送数据中,得到D2D数据,所述D2D数据包括所述业务周期指示信息;
发送单元,用于发送所述D2D数据。
在第七方面的一种可能设计中,所述D2D数据为调度分配SA信息或D2D通信的业务数据。
第八方面,本发明实施例提供了一种用户设备,包括:
接收单元,用于接收UE的D2D数据,所述D2D数据包括所述UE的业务周期指示信息;
确定单元,用于根据所述UE的业务周期指示信息和时频资源占用指示信息,确定空闲传输资源;
发送单元,用于在所述空闲传输资源上进行D2D通信。
在第八方面的一种可能设计中,所述D2D数据为调度分配SA信息或D2D通信的业务数据。
第九方面,本发明实施例提供了一种用户设备,包括:
发送单元,用于向基站发送第一业务周期指示信息,所述第一业务周期指示信息用于指示待发送数据的业务周期为第一周期;
接收单元,用于接收所述基站发送的第一传输资源指示信息,所述第一传输资源指示信息用于指示满足所述第一周期的第一传输资源;
该发送单元,用于在所述第一传输资源上进行D2D通信;
该发送单元还用于当业务周期发生变化时,向所述基站发送第二业务周期指示信息,所述第二业务周期指示信息用于指示待发送数据的业务周期变化为第二周期,其中,所述第一周期与所述第二周期不同。
在第九方面的一种可能设计中,该接收单元还用于接收所述基站发送的第二传输资源指示信息,所述第二传输资源指示信息用于指示满足所述第二周期的第二传输资源;
该发送单元,还用于在所述第二传输资源上进行D2D通信。
在第九方面的一种可能设计中,所述第一业务周期指示信息和所述第二业务周期指示信息承载于D2D传输资源请求、BSR、RRC信令、上行控制信道或MAC CE中。
在第九方面的一种可能设计中,该发送单元用于在所述第一传输资源上发送D2D数据,所述D2D数据包括所述第一业务周期指示信息。
在第九方面的一种可能设计中,所述D2D数据为调度分配SA信息或D2D通信的业务数据。
第十方面,本发明实施例提供了一种基站,包括:
接收单元,用于接收UE发送的第一业务周期指示信息,所述第一业务周期指示信息用于指示待发送数据的业务周期为第一周期;分配单元,用于根据所述第一业务周期指示信息,为所述UE分配满足所述第一周期的第一传输资源;发送单元,用于向所述UE发送第一传输资源指示信息,所述第一传输资源指示信息用于指示所述第一传输资源;所述分配单元还用于当接收到所述UE的第二业务周期指示信息时,根据所述第二业务周期指示信息,对传输资源进行重新分配,所述第二业务周期指示信息用于指示待发送数据的业务周期变化为第二周期。
在第十方面的一种可能设计中,该分配单元用于为所述UE分配满足所述第二周期的第二传输资源,该发送单元用于向所述UE发送第二传输资源指示信息,所述第二传输资源指示信息用于指示所述第二传输资源。
在第十方面的一种可能设计中,所述第一业务周期指示信息和所述第二业务周期指示信息承载于D2D传输资源请求、BSR、RRC信令、上行控制信道或MAC CE中。
第十一方面,本发明实施例提供了一种用户设备,包括:
发送单元,用于向基站发送第三业务周期指示信息,所述第三业务周期指示信息用于指示待发送数据的业务周期为第三周期;
接收单元,用于接收所述基站发送的第一上行传输资源指示信息,所述第一上行传输资源指示信息用于指示满足所述第三周期的第一上行传输资源;
该发送单元还用于在所述第一上行传输资源上进行上行数据传输。
在第十一方面的一种可能设计中,该发送单元还用于当业务周期发生变化时,向所述基站发送第四业务周期指示信息,所述第四业务周期指示信息用于指示待发送数据的业务周期变化为第四周期,其中,所述第三周期与所述第四周期不同;
该接收单元还用于接收所述基站发送的第二上行传输资源指示信息,所述第二上行传输资源指示信息用于指示满足所述第四周期的第二上行传输资源;
该发送单元还用于在所述第二上行传输资源上进行上行数据传输。
在第十一方面的一种可能设计中,所述第三业务周期指示信息承载于上行传输资源请求、BSR、RRC信令、上行控制信道或MAC CE中。
第十二方面,本发明实施例还提供了一种基站,包括:
接收单元,用于接收UE发送的第三业务周期指示信息,所述第三业务周期指示信息用于指示待发送数据的业务周期为第三周期;
分配单元,用于根据所述第三业务周期指示信息,为所述UE分配满足所述第三周期的第一上行传输资源;
发送单元,用于向所述UE发送第一上行传输资源指示信息,所述第一上行传输资源指示信息用于指示满足所述第三周期的第一上行传输资源。
在第十二方面的一种可能设计中,该分配单元还用于当接收到所述UE的
第四业务周期指示信息时,根据所述第四业务周期指示信息,对上行传输资源进行重新分配,所述第四业务周期指示信息用于指示待发送数据的业务周期变化为第四周期。
在第十二方面的一种可能设计中,该分配单元还用于为所述UE分配满足所述第四周期的第二上行传输资源,该发送单元还用于向所述UE发送第二上行传输资源指示信息,所述第二上行传输资源指示信息用于指示所述第四传输资源。
在第十二方面的一种可能设计中,所述第三业务周期指示信息承载于上行传输资源请求、BSR、RRC信令、上行控制信道或MAC CE中。
第十三方面,本发明实施例提供了一种用户设备,包括:发射器,接收器、以及分别与发射器、接收器连接的处理器等,当然,用户设备还可以包括天线、基带处理部件、中射频处理部件、输入输出装置等通用部件,本发明实施例在此不再任何限制。该用户设备被配置为通过上述发射器、接收器以及处理器执行上述第一方面至第六方面中任一用户设备侧的D2D通信方法,以避免传输资源的浪费,以提高传输资源的利用率。
第十四方面,本发明实施例提供了一种基站,包括:发射机、接收机、存储器以及分别与发射机、接收机和存储器连接的处理器。当然,基站还可以包括天线、基带处理部件、中射频处理部件、输入输出装置等通用部件,本发明实施例在此不再任何限制。该基站被配置为通过上述发射机、接收机以及处理器执行上述第一方面至第六方面中任一基站侧的D2D通信方法,以避免传输资源的浪费,以提高传输资源的利用率。
在上述任一可能设计中,业务周期指示信息用于指示该UE的业务数据的业务周期,如业务周期为100ms,则该UE每100ms发送一次业务数据。
在上述任一方面中所涉及的业务周期指示信息、第一业务周期指示信息、第二业务周期指示信息、第三业务周期指示信息以及第四业务周期指示信息均可以采用以下任一种表示方法:采用比特形式所表示的下一个数据包位于相对
于当前周期的第几个周期;或,采用比特形式所表示的相邻数据包之间的周期间隔;或,采用比特形式所表示的业务周期中所包括的最小周期个数;或,采用比特形式所表示的业务周期中所包括的资源池周期个数;或,采用比特形式所表示的业务周期中所包括的无线帧个数;或,采用比特形式所表示的业务周期中所包括的子帧个数;或,采用比特形式所表示的业务周期中所包括的侧行同步信号的周期个数。上述表示方式,大大提高了业务周期指示信息的灵活度,实用性强。
为了更清楚地说明本发明实施例中的技术方案,下面将对实施例描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1A是背景技术中模式1的实施场景示意图。
图1B是背景技术中模式2的实施场景示意图。
图1C表示用户设备A的业务周期示意图。
图2是本发明实施例提供的一种D2D通信方法的实施场景示意图。
图3是本发明实施例提供的用户设备的多个业务周期示意图。
图4是本发明实施例提供的一种D2D端到端通信方法的交互过程示意图。
图5是本发明实施例提供的一种D2D端到端通信方法的交互过程示意图。
图6是本发明实施例提供的一种在模式1下进行D2D通信方法的交互过程示意图。
图7是本发明实施例提供的一种D2D通信方法的交互过程示意图。
图8是本发明实施例提供的一种上行数据传输方法的交互过程示意图。
图9是本发明实施例所提供的一种用户设备的结构示意图。
图10是本发明实施例所提供的一种基站的结构示意图。
图11是本发明实施例提供的一种用户设备的结构示意图。
图12是本发明实施例提供的一种用户设备的结构示意图。
图13是本发明实施例提供的一种用户设备的结构示意图。
图14是本发明实施例提供的一种基站的结构示意图。
图15是本发明实施例提供的一种用户设备的结构示意图。
图16是本发明实施例提供的一种基站的结构示意图。
为使本发明的目的、技术方案和优点更加清楚,下面将结合附图对本发明实施方式作进一步地详细描述。
图2是本发明实施例提供的一种实施场景示意图。参见图2,该实施场景中包括UE(User Equipment,用户设备)和基站,其中,本发明实施例中所提供的UE可以是指车载通信系统、车辆上安装的用户设备或者一些如智能手机或者手持设备等的车内用户所持有的用户设备,或者是行人和骑车人的手持终端设备和可穿戴设备,如智能手表、智能头盔等。基站可以是指具有无线资源的管理功能的设备,能够与用户设备进行通信,或者作为中央控制器协助用户设备之间进行直接通信。
在下述实施例中所涉及的业务周期指示信息、第一业务周期指示信息、第二业务周期指示信息、第三业务周期指示信息以及第四业务周期指示信息均可以采用以下任一种表示方法:
第一种表示方法、采用比特形式所表示的下一个数据包位于相对于当前周期的第几个周期。
为了说明该第一种表示方法的具体表示形式,下面以业务周期指示信息为一个长度为N比特的信息,且N=4,数据包最小周期为T=100ms为例,需要说明的是,以下仅是示例性的说明,并不是完整的示例,对于N的其他数值,也可以有其他表示形式。
参见图3,图3是本发明实施例提供的多个业务周期的示意图。其中,100ms表示最小数据包周期,每个周期内包含一个或者多个资源池,实线柱形表示第一个资源池的时间资源,UE在该资源池内发送数据,并且在随后的发送周期内预留相同的资源用于发送数据。
0000:预留;
0001:表示下一个数据包在相对于当前周期的第一个周期,即每个最小周期(每100ms)有数据包的发送;
0010:表示下一个数据包在相对于当前周期的第二个周期,即每两个最小周期(每200ms)有数据包的发送;
0011:表示下一个数据包在相对于当前周期的第三个周期,即每三个最小周期(每300ms)有数据包的发送;
0100:表示下一个数据包在相对于当前周期的第四个周期,即每四个最小周期(每400ms)有数据包的发送;
以此类推。
1010:表示下一个数据包在相对于当前周期的第十个周期,即每十个最小周期(每1000ms)有数据包的发送;
1011-1111:预留。
上述具体表示形式,是以0000为预留为例进行说明,当然,在另一种具体表示形式中,也可以从0000开始对应于下一个数据包在相对于当前周期的第一个周期,以此类推,本发明实施例对此不做具体限定。
第二种表示方法、采用比特形式所表示的相邻数据包之间的周期间隔。
为了说明该第二种表示方法的具体表示形式,下面以业务周期指示信息为一个长度为N比特的信息,且N=4,数据包最小周期为T=100ms为例,需要说明的是,以下仅是示例性的说明,并不是完整的示例,对于N的其他数值,也可以有其他表示形式,数据包的最小周期可以是协议规定、预先配置、或者是基站配置。
0000:表示相邻两个业务周期间隔为0,即每个最小周期(每100ms)都有数据包的发送;
0001:表示相邻两个数据包的周期间隔为1,即每两个最小周期(每200ms)有数据包的发送;
以此类推;
0100:表示相邻两个数据包的周期间隔为4,即每五个最小周期(每500ms)有数据包的发送;
1001:表示相邻两个数据包的周期间隔为9,即每十个最小周期(每1000ms)有数据包的发送;
1010-1111:预留。
上述具体表示形式,是以0000对应于相邻两个业务周期间隔为0为例进行说明,当然,在另一种具体表示形式中,也可以从0001开始,以此类推,本发明实施例对此不做具体限定。
第三种表示方法、采用比特形式所表示的业务周期中所包括的最小周期个数。
为了说明该第三种表示方法的具体表示形式,下面以业务周期指示信息为一个长度为N比特的信息,且N=4,数据包最小周期为T=100ms为例,需要说明的是,以下仅是示例性的说明,并不是完整的示例,对于N的其他数值,也可以有其他表示形式,数据包的最小周期可以是协议规定、预先配置、或者是基站配置。
0000:预留;
0001:业务周期为1个最小周期T,即每100ms发送一个数据包;
0010:业务周期为2个最小周期T,即每200ms发送一个数据包;
0011:业务周期为3个最小周期T,即每300ms发送一个数据包;
0100:业务周期为4个最小周期T,即每400ms发送一个数据包;
以此类推,
1010:业务周期为10个最小周期T,即每1000ms发送一个数据包;
1011-1111:预留。
上述具体表示形式,是以0000为预留为例进行说明,当然,在另一种具体表示形式中,也可以从0000开始对应于业务周期为1个最小周期T,以此类推,本发明实施例对此不做具体限定。
上述第一种至第三种表示方法,业务周期均是以数据包的最小周期为时间单位,该最小周期可以不是上述举例中的T=100ms,还可以取其他数值,在此不做赘述。另外,在其他表示方法中,该业务周期还可以采用其他时间单位,例如,资源池周期,无线帧,子帧等,该资源池周期可以是指系统配置SA资源池周期或者数据资源池周期等。其中,资源池周期表示该资源池包含的子帧个数,如资源池周期是50ms,表示资源池中包含50个子帧。为了说明其具体实现,下面对基于资源池周期为时间单位的情况进行描述:
第四种表示方法、采用比特形式所表示的业务周期中所包括的资源池周期个数。
为了说明该第四种表示方法的具体表示形式,下面以业务周期指示信息为一个长度为N比特的信息,且N=4,资源池周期P=50ms为例,需要说明的是,以下仅是示例性的说明,并不是完整的示例,对于N的其他数值,也可以有其他表示形式,资源池周期可以是协议规定、预先配置、或者是基站配置。
0000:预留(无含义)
0001:业务周期为2个资源池周期P,即每100ms发送一个数据包;
0010:业务周期为4个资源池周期P,即每200ms发送一个数据包;
0011:业务周期为6个资源池周期P,即每300ms发送一个数据包;
0100:业务周期为8个资源池周期P,即每400ms发送一个数据包;
以此类推,
1010:业务周期为20个资源池周期P,即每1000ms发送一个数据包;
1011-1111:预留。
上述具体表示形式,是以0000为预留为例进行说明,当然,在另一种具体表示形式中,也可以从0000开始对应于业务周期为2个资源池周期P;或者在另一种表示形式中,0001可以表示业务周期为1个资源池周期P以此类推,本发明实施例对此不做具体限定。
该业务周期还可以采用无线帧为时间单位,例如:
第五种表示方法、采用比特形式所表示的业务周期中所包括的无线帧个数。
为了说明该第五种表示方法的具体表示形式,下面以业务周期指示信息为一个长度为N比特的信息,且N=4,无线帧S=10ms为例,需要说明的是,以下仅是示例性的说明,并不是完整的示例,对于N的其他数值,也可以有其他表示形式。
0000:预留(无含义)
0001:业务周期为10个无线帧S,即每100ms发送一个数据包;
0010:业务周期为20个无线帧S,即每200ms发送一个数据包;
0011:业务周期为30个无线帧S,即每300ms发送一个数据包;
0100:业务周期为40个无线帧S,即每400ms发送一个数据包;
以此类推,
1010:业务周期为100个无线帧S,即每1000ms发送一个数据包;
1011-1111:预留。
上述具体表示形式,是以0000为预留为例进行说明,当然,在另一种具体表示形式中,也可以从0000开始对应于业务周期为10个无线帧S;或者在另一种具体表示形式中,0001可以表示业务周期为1个无线帧S,以此类推,本发明实施例对此不做具体限定。
该业务周期还可以采用子帧为时间单位,例如:
第六种表示方法、采用比特形式所表示的业务周期中所包括的子帧个数。
为了说明该第六种表示方法的具体表示形式,下面以业务周期指示信息为
一个长度为N比特的信息,且N=4,子帧F=1ms为例,需要说明的是,以下仅是示例性的说明,并不是完整的示例,对于N的其他数值,也可以有其他表示形式。
0000:预留(无含义)
0001:业务周期为100个子帧F,即每100ms发送一个数据包;
0010:业务周期为200个子帧F,即每200ms发送一个数据包;
0011:业务周期为300个子帧F,即每300ms发送一个数据包;
0100:业务周期为400个子帧F,即每400ms发送一个数据包;
以此类推,
1010:业务周期为1000个子帧F,即每1000ms发送一个数据包;
1011-1111:预留。
上述具体表示形式,是以0000为预留为例进行说明,当然,在另一种具体表示形式中,也可以从0000开始对应于业务周期为100个子帧F,以此类推,本发明实施例对此不做具体限定。
该业务周期还可以采用侧行同步信号的周期为时间单位,其中,侧行同步信号是D2D通信时终端发送的同步信号,用于接收端跟发送端进行时频同步,侧行同步信号占据系统带宽中间6个物理资源块,每隔X ms发送一次,例如X=40,此时D2D系统中侧行同步信号的周期是40ms。例如:
第七种表示方法、采用比特形式所表示的业务周期中所包括的侧行同步信号的周期个数。
为了说明该第七种表示方法的具体表示形式,下面以业务周期指示信息为一个长度为N比特的信息,且N=4,侧行同步信号的周期SS=40ms为例,需要说明的是,以下仅是示例性的说明,并不是完整的示例,对于N的其他数值,也可以有其他表示形式。
0000:预留(无含义)
0001:业务周期为1个侧行同步信号的周期SS,即每40ms发送一个数据
包;
0010:业务周期为2个侧行同步信号的周期SS,即每80ms发送一个数据包;
以此类推。
上述具体表示形式,是以0000为预留为例进行说明,当然,在另一种具体表示形式中,也可以从0000开始对应于业务周期为1个侧行同步信号的周期SS,以此类推,本发明实施例对此不做具体限定。
在D2D通信中,用户设备之间会进行SA信息的发送以及业务数据的发送,而对于用户设备来说,可以在上述SA信息或业务数据中,携带发送端的业务周期指示信息,在此,以在SA信息中携带发送端的业务周期指示信息为例对该通信方法进行说明。图4是本发明实施例提供的一种D2D端到端通信方法的交互过程示意图。参见图4,该交互过程包括:
401、UE1根据待发送数据的业务周期,生成UE1的业务周期指示信息。
402、将所述业务周期指示信息添加至所述待发送数据中,得到SA信息,该SA信息包括UE1的业务周期指示信息。
403、UE1发送SA信息。
其中,业务周期指示信息用于指示该UE1的业务数据的业务周期,如业务周期为100ms,则该UE1每100ms发送一次业务数据。
该业务周期指示信息可以采用上述几种表示方式中的任一种表示方式,在此不做赘述。
404、当UE2接收到该UE1的SA信息时,根据UE1的业务周期指示信息和SA信息中的时频资源占用指示信息,确定空闲传输资源。
由于SA信息中包括了时频资源占用指示信息,该时频资源占用指示信息可以指示该UE1在发送DATA时所使用的是时频资源位置,且,该SA信息中还携带了业务周期指示信息,使得UE2可以通过该SA信息,获知该UE1每
隔多长时间在哪些时频资源上发送DATA,也即是,UE2可以获知该UE1所占用的时频资源的具体情况,基于该占用情况,UE2可以获知哪些时频资源在哪些时间未被占用,也即是UE2可以获知空闲传输资源。
405、UE2在空闲传输资源上进行D2D通信。
UE2在获知了空闲传输资源后,可以在该空闲传输资源上与其他UE进行D2D通信,如在该空闲传输资源上发送SA信息,或者,在该空闲传输资源上发送DATA。
在另一可能实现方式中,以在业务数据中携带发送端的业务周期指示信息为例对该通信方法进行说明。图5是本发明实施例提供的一种D2D端到端通信方法的交互过程示意图。参见图5,该交互过程包括:
501、UE1发送SA信息,该SA信息用于指示业务数据的状态信息,该状态信息至少包括业务数据的时频资源占用指示信息。
其中,该状态信息还可以包括:MCS信息,跳频指示,定时提前信息,接收组ID信息等。
502、UE1根据待发送数据的业务周期,生成UE1的业务周期指示信息。
503、UE1将所述业务周期指示信息添加至所述待发送的业务数据中,得到业务数据,该业务数据包括UE1的业务周期指示信息。
504、UE1发送业务数据。
505、当UE2接收到该UE1的SA信息时,根据UE1的SA信息,确定业务数据的状态信息。
506、UE2根据该状态信息,在该状态信息中时频资源占用指示信息所指示的时频资源上接收业务数据,该业务数据包括UE1的业务周期指示信息。
上述确定和接收过程可以与现有的基于SA信息接收业务数据的过程同理,在此不做赘述。
507、UE2根据UE1的业务周期指示信息和SA信息中的时频资源占用指
示信息,确定空闲传输资源。
508、UE2在空闲传输资源上进行D2D通信。
上述507至508与步骤404至405同理,在此不做赘述。
在模式1的实施场景下,由基站从预设的半静态资源池中为UE进行传输资源分配,图6是本发明实施例提供的一种在模式1下进行D2D通信方法的交互过程示意图。参见图6,该交互过程包括:
601、UE3向基站发送第一业务周期指示信息,所述第一业务周期指示信息用于指示待发送数据的业务周期为第一周期。
其中,该第一业务周期指示信息可以承载于D2D传输资源请求、BSR、RRC(Radio Resource Control,无线资源控制协议)信令、上行控制信道或MAC CE中。
602、当基站接收到UE3发送的第一业务周期指示信息,基站根据所述第一业务周期指示信息,为所述UE3分配满足所述第一周期的第一传输资源。
如果该第一业务周期指示信息承载于D2D传输资源请求中,则在接收到该D2D传输资源请求时,执行该步骤602,而当该第一业务周期指示信息承载于BSR、RRC信令、上行控制信道或MAC CE中时,则基站可能在接收到D2D传输资源请求之后,再根据已接收到的第一业务周期指示信息和该D2D传输资源请求,为UE3进行传输资源的分配。
在本发明实施例中,满足所述第一周期的第一传输资源是指业务周期上能够满足第一周期的第一传输资源,基站根据第一周期信息分配半静态传输资源用于UE3进行数据发送。例如,当第一周期为100ms时,则说明该UE3需要每100ms占用一定时频资源进行数据发送,则该第一传输资源是一系列时频资源的集合,即包括用于SA传输的时频资源,也包括用于数据传输的时频资源。例如,基站在每100ms内为SA分配M1个子帧,在每个子帧上分配N1个物理资源块用于SA的传输;为数据分配M2个子帧,在每个子帧上分配N2个
物理资源块用于数据的传输,UE3在每100ms内使用相同的时频资源发送数据。
603、基站向所述UE3发送第一传输资源指示信息,所述第一传输资源指示信息用于指示所述第一传输资源。
该第一传输资源指示信息所指示的第一传输资源可以是半静态传输资源,也即是,UE3可以使用该第一传输资源一直进行D2D传输,直到再次进行资源分配为止。
604、当UE3收所述基站发送的第一传输资源指示信息,在所述第一传输资源上进行D2D通信。
该D2D通信的过程可以与上述步骤403同理,在此不做赘述。
605、当业务周期发生变化时,UE3向所述基站发送第二业务周期指示信息,所述第二业务周期指示信息用于指示待发送数据的业务周期变化为第二周期,其中,所述第一周期与所述第二周期不同。
该第二业务周期指示信息与第一业务周期指示信息同理,也可以承载于D2D传输资源请求、BSR、RRC信令、上行控制信道或MAC CE中。
对于一些待发送数据来说,其业务周期可能随环境或系统设置不同而发生变化,如,业务周期从100ms变化为200ms,则如果依然基于第一传输资源进行D2D通信,其中有一部分传输资源会被浪费,为了避免资源浪费,UE3在检测到自身待发送数据的业务周期与之前的业务发送周期不同时,则需要请求基站重新进行资源分配,并且向基站发送新的业务周期指示信息。
606、当接收到所述UE3的第二业务周期指示信息时,基站根据所述第二业务周期指示信息,对传输资源进行重新分配,所述第二业务周期指示信息用于指示待发送数据的业务周期变化为第二周期。
此时,如果第一周期大于第二周期,则重新进行资源分配可以保证UE3的业务数据的正常发送,而如果第一周期小于第二周期,则重新进行资源分配可以避免传输资源的浪费,提高传输资源利用率。
具体地,在重新分配时,可以采取以下过程:基站为所述UE分配满足所述第二周期的第二传输资源,向所述UE发送第二传输资源指示信息,所述第二传输资源指示信息用于指示所述第二传输资源。而当UE3接收到所述基站发送的第二传输资源指示信息,所述第二传输资源指示信息用于指示满足所述第二周期的第二传输资源,UE3在所述第二传输资源上进行D2D通信。
通过上述D2D通信过程,可以在待发送数据的业务周期发生变化时,及时触发基站对传输资源的重新分配,并在分配时,充分考虑变化后的业务周期,使得所分配的传输资源能够满足变化后业务周期的需求,避免传输资源的浪费,提高传输资源利用率。进一步地,这种由UE触发的重新分配过程,实时性更强,也相应提高了基站在传输资源分配上的灵活性。
图6所示实施例针对的是模式1下的资源分配,而在实际应用中,可能会出现模式1的资源池与其他模式的资源池,如模式2的资源池之间有交叠或者重合的情况,在这种场景下,提供了如图7的实施例,具体地,图7是本发明实施例提供的一种D2D通信方法的交互过程示意图。参见图7,该交互过程包括:
701、UE4向基站发送第一业务周期指示信息,所述第一业务周期指示信息用于指示待发送数据的业务周期为第一周期。
该第一业务周期指示信息与上述步骤601同理,在此不做赘述。
702、当基站接收到UE4发送的第一业务周期指示信息,基站根据所述第一业务周期指示信息,为所述UE4分配满足所述第一周期的第一传输资源。
703、基站向所述UE4发送第一传输资源指示信息,所述第一传输资源指示信息用于指示所述第一传输资源。
上述步骤702至703与步骤602至603同理,在此不做赘述。
704、当UE4接收到所述基站发送的第一传输资源指示信息,在所述第一传输资源上发送D2D数据,所述D2D数据包含所述第一业务周期指示信息。
其中,所述D2D数据为调度分配SA信息或D2D通信的业务数据。
该步骤704与图4和图5中所示的D2D通信过程同理,在D2D数据(例如SA信息或业务数据)中携带第一业务周期指示信息,可以使得其他接收到该D2D数据的UE能够根据该第一业务周期指示信息以及该UE的时频资源占用指示信息,确定空闲传输资源,并在空闲传输资源上进行D2D通信。
705、当业务周期发生变化时,UE4向所述基站发送第二业务周期指示信息,所述第二业务周期指示信息用于指示待发送数据的业务周期变化为第二周期,其中,所述第一周期与所述第二周期不同。
706、当接收到所述UE4的第二业务周期指示信息时,基站根据所述第二业务周期指示信息,对传输资源进行重新分配,所述第二业务周期指示信息用于指示待发送数据的业务周期变化为第二周期。
该步骤705至步骤706与上述步骤605和606同理,在此不做赘述。
通过上述D2D通信过程,可以在待发送数据的业务周期发生变化时,及时触发基站对传输资源的重新分配,并在分配时,充分考虑变化后的业务周期,使得所分配的传输资源能够满足变化后业务周期的需求,避免传输资源的浪费,提高传输资源利用率。进一步地,这种由UE触发的重新分配过程,实时性更强,也相应提高了基站在传输资源分配上的灵活性。更进一步地,由于占用第一传输资源的UE4还将自身的传输资源占用情况提供给了接收端UE,使得接收端UE可以在侦听可用资源时,通过检测其他用户(包括模式1用户和模式2用户)在D2D数据中携带的第一业务周期指示信息,以获知其资源占用情况,进一步提高了传输资源利用率。
在另一实施例中,D2D通信还可以采用基站转发的方式,由发送端UE将自身的业务数据发送至基站,再由基站进行广播,那么,在发送端UE进行业务数据传输之前,需要先向基站进行上行传输资源请求,基站为终端分配半静态传输资源,以用于终端上行数据传输。此时,一旦分配了半静态传输资源,
如果发送端UE的业务周期发生变化,如业务周期从100ms变成200ms,也会造成上行传输资源的浪费,为此,提供了如图8的方法。图8是本发明实施例提供的一种上行数据传输方法的交互过程示意图。参见图8,该交互过程包括:
801、UE5向基站发送第三业务周期指示信息,所述第三业务周期指示信息用于指示待发送数据的业务周期为第三周期。
与上述第一业务周期指示信息和第二业务周期指示信息同理,所述第三业务周期指示信息承载于上行传输资源请求、BSR、RRC信令、上行控制信道或MAC CE中。
802、当基站接收到UE5发送的第三业务周期指示信息,基站根据所述第三业务周期指示信息,为所述UE分配满足所述第三周期的第一上行传输资源。
由于UE5将自身的第三业务周期指示信息告知给基站,使得基站在进行上行资源分配时,可以更准确的为UE5进行上行资源分配,相应地也即是避免了上行传输资源浪费,从而提高了上行传输资源利用率。
803、基站向所述UE发送第一上行传输资源指示信息,所述第一上行传输资源指示信息用于指示满足所述第三周期的第一上行传输资源。
804、当UE5接收到所述基站发送的第一上行传输资源指示信息,在所述第一上行传输资源上进行上行数据传输。
进一步地,当业务周期发生变化时,UE5还可以执行以下步骤:
805、当业务周期发生变化时,UE5向所述基站发送第四业务周期指示信息,所述第四业务周期指示信息用于指示待发送数据的业务周期变化为第四周期,其中,所述第三周期与所述第四周期不同。
806、当接收到所述UE的第四业务周期指示信息时,基站为所述UE分配满足所述第四周期的第二上行传输资源。
该步骤806事实上是基站根据所述第四业务周期指示信息,对上行传输资源进行重新分配的过程,当然,基站在进行对UE5的重新分配时,还可以将UE5不再占用的传输资源分配给其他UE。
807、基站向所述UE发送第二上行传输资源指示信息,所述第二上行传输资源指示信息用于指示所述第四传输资源。
808、当UE5接收到所述基站发送的第二上行传输资源指示信息,在所述第二上行传输资源上进行上行数据传输。
该上行传输资源的请求过程以及基于业务周期变化进行重新请求的过程与上述实施例中所提供的D2D传输资源请求过程以及基于业务周期变化进行重新请求的过程过程类似,其具体过程在此不做赘述。
通过上述D2D通信过程,可以在待发送数据的业务周期发生变化时,及时触发基站对上行传输资源的重新分配,并在分配时,充分考虑变化后的业务周期,使得所分配的上行传输资源能够满足变化后业务周期的需求,避免上行传输资源的浪费,提高上行传输资源利用率。进一步地,这种由UE触发的重新分配过程,实时性更强,也相应提高了基站在上行传输资源分配上的灵活性。
请参考图9,其为本发明实施例所提供的一种用户设备的结构示意图。如图所示,该用户设备包括发射器、接收器、存储器以及分别与发射器、接收器和存储器连接的处理器。当然,用户设备还可以包括天线、基带处理部件、中射频处理部件、输入输出装置等通用部件,本发明实施例在此不再任何限制。
所述用户设备被配置为执行上述图4至图8中任一实施例所提供的用户设备侧的D2D通信方法。
请参考图10,其为本发明实施例所提供的一种基站的结构示意图。如图所示,该基站包括发射机、接收机、存储器以及分别与发射机、接收机和存储器连接的处理器。当然,基站还可以包括天线、基带处理部件、中射频处理部件、输入输出装置等通用部件,本发明实施例在此不再任何限制。
所述基站被配置为执行上述图6至图8中任一实施例所提供的基站侧的D2D通信方法。
图11是本发明实施例提供的一种用户设备的结构示意图。参见图11,该用户设备包括:
生成单元1101,用于根据待发送数据的业务周期,生成UE的业务周期指示信息;
添加单元1102,用于将所述业务周期指示信息添加至所述待发送数据中,得到D2D数据,所述D2D数据包括所述业务周期指示信息;
发送单元1103,用于发送所述D2D数据。
可选地,所述业务周期指示信息为:
采用比特形式所表示的下一个数据包位于相对于当前周期的第几个周期;或,
采用比特形式所表示的相邻数据包之间的周期间隔;或,
采用比特形式所表示的业务周期中所包括的最小周期个数;或,
采用比特形式所表示的业务周期中所包括的资源池周期个数;或,
采用比特形式所表示的业务周期中所包括的无线帧个数;或,
采用比特形式所表示的业务周期中所包括的子帧个数;或,
采用比特形式所表示的业务周期中所包括的侧行同步信号的周期个数。
可选地,所述D2D数据为调度分配SA信息或D2D通信的业务数据。
图12是本发明实施例提供的一种用户设备的结构示意图,参见图12,包括:
接收单元1201,用于接收UE的D2D数据,所述D2D数据包括所述UE的业务周期指示信息;
确定单元1202,用于根据所述UE的业务周期指示信息和时频资源占用指示信息,确定空闲传输资源;
发送单元1203,用于在所述空闲传输资源上进行D2D通信。
可选地,所述业务周期指示信息为:
采用比特形式所表示的下一个数据包位于相对于当前周期的第几个周期;或,
采用比特形式所表示的相邻数据包之间的周期间隔;或,
采用比特形式所表示的业务周期中所包括的最小周期个数;或,
采用比特形式所表示的业务周期中所包括的资源池周期个数;或,
采用比特形式所表示的业务周期中所包括的无线帧个数;或,
采用比特形式所表示的业务周期中所包括的子帧个数;或,
采用比特形式所表示的业务周期中所包括的侧行同步信号的周期个数。
图13是本发明实施例提供的一种用户设备的结构示意图。参见图13,该用户设备包括:
发送单元1301,用于向基站发送第一业务周期指示信息,所述第一业务周期指示信息用于指示待发送数据的业务周期为第一周期;
接收单元1302,用于接收所述基站发送的第一传输资源指示信息,所述第一传输资源指示信息用于指示满足所述第一周期的第一传输资源;
所述发送单元1301,用于在所述第一传输资源上进行D2D通信;
所述发送单元1301还用于当业务周期发生变化时,向所述基站发送第二业务周期指示信息,所述第二业务周期指示信息用于指示待发送数据的业务周期变化为第二周期,其中,所述第一周期与所述第二周期不同。
可选地,所述接收单元1302还用于接收所述基站发送的第二传输资源指示信息,所述第二传输资源指示信息用于指示满足所述第二周期的第二传输资源;
所述发送单元1301,还用于在所述第二传输资源上进行D2D通信。
可选地,所述第一业务周期指示信息和所述第二业务周期指示信息承载于D2D传输资源请求、BSR、RRC信令、上行控制信道或MAC CE中。
可选地,所述发送单元1301用于在所述第一传输资源上发送D2D数据,所述D2D数据包括所述第一业务周期指示信息。
可选地,所述D2D数据为调度分配SA信息或D2D通信的业务数据。
可选地,所述第一业务周期指示信息和所述第二业务周期指示信息的表示方法为:
采用比特形式所表示的下一个数据包位于相对于当前周期的第几个周期;或,
采用比特形式所表示的相邻数据包之间的周期间隔;或,
采用比特形式所表示的业务周期中所包括的最小周期个数;或,
采用比特形式所表示的业务周期中所包括的资源池周期个数;或,
采用比特形式所表示的业务周期中所包括的无线帧个数;或,
采用比特形式所表示的业务周期中所包括的子帧个数;或,
采用比特形式所表示的业务周期中所包括的侧行同步信号的周期个数。
图14是本发明实施例提供的一种基站的结构示意图。参见图14,该基站包括:接收单元1401,用于接收UE发送的第一业务周期指示信息,所述第一业务周期指示信息用于指示待发送数据的业务周期为第一周期;分配单元1402,用于根据所述第一业务周期指示信息,为所述UE分配满足所述第一周期的第一传输资源;发送单元1403,用于向所述UE发送第一传输资源指示信息,所述第一传输资源指示信息用于指示所述第一传输资源;所述分配单元1402还用于当接收到所述UE的第二业务周期指示信息时,根据所述第二业务周期指示信息,对传输资源进行重新分配,所述第二业务周期指示信息用于指示待发送数据的业务周期变化为第二周期。
可选地,所述分配单元1402用于为所述UE分配满足所述第二周期的第二传输资源,向所述UE发送第二传输资源指示信息,所述第二传输资源指示信息用于指示所述第二传输资源。
可选地,所述第一业务周期指示信息和所述第二业务周期指示信息承载于D2D传输资源请求、BSR、RRC信令、上行控制信道或MAC CE中。
可选地,所述第一业务周期指示信息和所述第二业务周期指示信息的表示方法为:
采用比特形式所表示的下一个数据包位于相对于当前周期的第几个周期;或,
采用比特形式所表示的相邻数据包之间的周期间隔;或,
采用比特形式所表示的业务周期中所包括的最小周期个数;或,
采用比特形式所表示的业务周期中所包括的资源池周期个数;或,
采用比特形式所表示的业务周期中所包括的无线帧个数;或,
采用比特形式所表示的业务周期中所包括的子帧个数;或,
采用比特形式所表示的业务周期中所包括的侧行同步信号的周期个数。
图15是本发明实施例提供的一种用户设备的结构示意图。参见图15,该用户设备包括:
发送单元1501,用于向基站发送第三业务周期指示信息,所述第三业务周期指示信息用于指示待发送数据的业务周期为第三周期;
接收单元1502,用于接收所述基站发送的第一上行传输资源指示信息,所述第一上行传输资源指示信息用于指示满足所述第三周期的第一上行传输资源;
所述发送单元1501还用于在所述第一上行传输资源上进行上行数据传输。
可选地,所述发送单元1501还用于当业务周期发生变化时,向所述基站发送第四业务周期指示信息,所述第四业务周期指示信息用于指示待发送数据的业务周期变化为第四周期,其中,所述第三周期与所述第四周期不同;
所述接收单元1502还用于接收所述基站发送的第二上行传输资源指示信息,所述第二上行传输资源指示信息用于指示满足所述第四周期的第二上行传输资源;
所述发送单元1501还用于在所述第二上行传输资源上进行上行数据传输。
可选地,所述第三业务周期指示信息承载于上行传输资源请求、BSR、RRC信令、上行控制信道或MAC CE中。
可选地,所述第三业务周期指示信息的表示方法为:
采用比特形式所表示的下一个数据包位于相对于当前周期的第几个周期;或,
采用比特形式所表示的相邻数据包之间的周期间隔;或,
采用比特形式所表示的业务周期中所包括的最小周期个数;或,
采用比特形式所表示的业务周期中所包括的资源池周期个数;或,
采用比特形式所表示的业务周期中所包括的无线帧个数;或,
采用比特形式所表示的业务周期中所包括的子帧个数;或,
采用比特形式所表示的业务周期中所包括的侧行同步信号的周期个数。
图16是本发明实施例提供的一种基站的结构示意图,参见图16,该基站包括:
接收单元1601,用于接收UE发送的第三业务周期指示信息,所述第三业务周期指示信息用于指示待发送数据的业务周期为第三周期;
分配单元1602,用于根据所述第三业务周期指示信息,为所述UE分配满足所述第三周期的第一上行传输资源;
发送单元1603,用于向所述UE发送第一上行传输资源指示信息,所述第一上行传输资源指示信息用于指示满足所述第三周期的第一上行传输资源。
可选地,所述分配单元1602还用于当接收到所述UE的第四业务周期指示信息时,根据所述第四业务周期指示信息,对上行传输资源进行重新分配,所述第四业务周期指示信息用于指示待发送数据的业务周期变化为第四周期。
可选地,所述分配单元1602还用于为所述UE分配满足所述第四周期的第二上行传输资源,所述发送单元1603还用于向所述UE发送第二上行传输资源指示信息,所述第二上行传输资源指示信息用于指示所述第四传输资源。
可选地,所述第三业务周期指示信息承载于上行传输资源请求、BSR、RRC信令、上行控制信道或MAC CE中。
可选地,所述第三业务周期指示信息的表示方法为:
采用比特形式所表示的下一个数据包位于相对于当前周期的第几个周期;或,
采用比特形式所表示的相邻数据包之间的周期间隔;或,
采用比特形式所表示的业务周期中所包括的最小周期个数;或,
采用比特形式所表示的业务周期中所包括的资源池周期个数;或,
采用比特形式所表示的业务周期中所包括的无线帧个数;或,
采用比特形式所表示的业务周期中所包括的子帧个数;或,
采用比特形式所表示的业务周期中所包括的侧行同步信号的周期个数。
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通过硬件来完成,也可以通过程序来指令相关的硬件完成,所述的程序可以存储于一种计算机可读存储介质中,上述提到的存储介质可以是只读存储器,磁盘或光盘等。
以上所述仅为本发明的较佳实施例,并不用以限制本发明,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (50)
- 一种D2D端到端通信方法,其特征在于,包括:第一用户设备根据待发送数据的业务周期,生成所述第一用户设备的业务周期指示信息;所述第一用户设备将所述业务周期指示信息添加至所述待发送数据中,得到D2D数据,所述D2D数据包括所述业务周期指示信息;所述第一用户设备发送所述D2D数据。
- 根据权利要求1所述的方法,其特征在于,所述业务周期指示信息为:采用比特形式所表示的下一个数据包位于相对于当前周期的第几个周期;或,采用比特形式所表示的相邻数据包之间的周期间隔;或,采用比特形式所表示的业务周期中所包括的最小周期个数;或,采用比特形式所表示的业务周期中所包括的资源池周期个数;或,采用比特形式所表示的业务周期中所包括的无线帧个数;或,采用比特形式所表示的业务周期中所包括的子帧个数;或,采用比特形式所表示的业务周期中所包括的侧行同步信号的周期个数。
- 根据权利要求1或2所述的方法,其特征在于,所述D2D数据为调度分配SA信息或D2D通信的业务数据。
- 一种D2D通信方法,其特征在于,包括:第二用户设备接收第一用户设备的D2D数据,所述D2D数据包括所述第一用户设备的业务周期指示信息;所述第二用户设备根据所述第一用户设备的业务周期指示信息和时频资源占用指示信息,确定空闲传输资源;所述第二用户设备在所述空闲传输资源上进行D2D通信。
- 根据权利要求4所述的方法,其特征在于,所述业务周期指示信息为:采用比特形式所表示的下一个数据包位于相对于当前周期的第几个周期;或,采用比特形式所表示的相邻数据包之间的周期间隔;或,采用比特形式所表示的业务周期中所包括的最小周期个数;或,采用比特形式所表示的业务周期中所包括的资源池周期个数;或,采用比特形式所表示的业务周期中所包括的无线帧个数;或,采用比特形式所表示的业务周期中所包括的子帧个数;或,采用比特形式所表示的业务周期中所包括的侧行同步信号的周期个数。
- 根据权利要求4或5所述的方法,其特征在于,所述D2D数据为调度分配SA信息或D2D通信的业务数据。
- 一种D2D通信方法,其特征在于,包括:第三用户设备向基站发送第一业务周期指示信息,所述第一业务周期指示信息用于指示待发送数据的业务周期为第一周期;所述第三用户设备接收所述基站发送的第一传输资源指示信息,所述第一传输资源指示信息用于指示满足所述第一周期的第一传输资源;所述第三用户设备在所述第一传输资源上进行D2D通信;当所述业务周期发生变化时,所述第三用户设备向所述基站发送第二业务周期指示信息,所述第二业务周期指示信息用于指示待发送数据的业务周期变化为第二周期,其中,所述第一周期与所述第二周期不同。
- 根据权利要求7所述的方法,其特征在于,当业务周期发生变化时,所述第三用户设备向所述基站发送第二业务周期指示信息之后,所述方法还包括:所述第三用户设备接收所述基站发送的第二传输资源指示信息,所述第二传输资源指示信息用于指示满足所述第二周期的第二传输资源;在所述第二传输资源上进行D2D通信。
- 根据权利要求7或8任一项所述的方法,其特征在于,所述第一业务周期指示信息和所述第二业务周期指示信息承载于D2D传输资源请求、BSR、RRC 信令、上行控制信道或MAC CE中。
- 根据权利要求7至9任一项所述的方法,其特征在于,所述第三用户设备在所述第一传输资源上进行D2D通信包括:所述第三用户设备在所述第一传输资源上发送D2D数据,所述D2D数据包括所述第一业务周期指示信息。
- 根据权利要求10所述的方法,其特征在于,所述D2D数据为调度分配SA信息或D2D通信的业务数据。
- 根据权利要求7至11任一项所述的方法,其特征在于,所述第一业务周期指示信息和所述第二业务周期指示信息的表示方法为:采用比特形式所表示的下一个数据包位于相对于当前周期的第几个周期;或,采用比特形式所表示的相邻数据包之间的周期间隔;或,采用比特形式所表示的业务周期中所包括的最小周期个数;或,采用比特形式所表示的业务周期中所包括的资源池周期个数;或,采用比特形式所表示的业务周期中所包括的无线帧个数;或,采用比特形式所表示的业务周期中所包括的子帧个数;或,采用比特形式所表示的业务周期中所包括的侧行同步信号的周期个数。
- 一种D2D通信方法,其特征在于,包括:基站接收第三用户设备发送的第一业务周期指示信息,所述第一业务周期指示信息用于指示待发送数据的业务周期为第一周期;所述基站根据所述第一业务周期指示信息,为所述第三用户设备分配满足所述第一周期的第一传输资源;所述基站向所述第三用户设备发送第一传输资源指示信息,所述第一传输资源指示信息用于指示所述第一传输资源;当接收到所述第三用户设备的第二业务周期指示信息时,所述基站根据所 述第二业务周期指示信息,对传输资源进行重新分配,所述第二业务周期指示信息用于指示待发送数据的业务周期变化为第二周期。
- 根据权利要求13所述的方法,其特征在于,当接收到所述第三用户设备的第二业务周期指示信息时,基站根据所述第二业务周期指示信息,对传输资源进行重新分配包括:为所述第三用户设备分配满足所述第二周期的第二传输资源,向所述第三用户设备发送第二传输资源指示信息,所述第二传输资源指示信息用于指示所述第二传输资源。
- 根据权利要求13或14所述的方法,其特征在于,所述第一业务周期指示信息和所述第二业务周期指示信息承载于D2D传输资源请求、BSR、RRC信令、上行控制信道或MAC CE中。
- 根据权利要求13至15任一项所述的方法,其特征在于,所述第一业务周期指示信息和所述第二业务周期指示信息的表示方法为:采用比特形式所表示的下一个数据包位于相对于当前周期的第几个周期;或,采用比特形式所表示的相邻数据包之间的周期间隔;或,采用比特形式所表示的业务周期中所包括的最小周期个数;或,采用比特形式所表示的业务周期中所包括的资源池周期个数;或,采用比特形式所表示的业务周期中所包括的无线帧个数;或,采用比特形式所表示的业务周期中所包括的子帧个数;或,采用比特形式所表示的业务周期中所包括的侧行同步信号的周期个数。
- 一种上行数据传输方法,其特征在于,包括:第四用户设备向基站发送第三业务周期指示信息,所述第三业务周期指示信息用于指示待发送数据的业务周期为第三周期;所述第四用户设备接收所述基站发送的第一上行传输资源指示信息,所述第一上行传输资源指示信息用于指示满足所述第三周期的第一上行传输资源;所述第四用户设备在所述第一上行传输资源上进行上行数据传输。
- 根据权利要求17所述的方法,其特征在于,所述第四用户设备在所述第一上行传输资源上进行上行数据传输之后,所述方法还包括:当业务周期发生变化时,所述第四用户设备向所述基站发送第四业务周期指示信息,所述第四业务周期指示信息用于指示待发送数据的业务周期变化为第四周期,其中,所述第三周期与所述第四周期不同;所述第四用户设备接收所述基站发送的第二上行传输资源指示信息,所述第二上行传输资源指示信息用于指示满足所述第四周期的第二上行传输资源;所述第四用户设备在所述第二上行传输资源上进行上行数据传输。
- 根据权利要求17所述的方法,其特征在于,所述第三业务周期指示信息承载于上行传输资源请求、BSR、RRC信令、上行控制信道或MAC CE中。
- 根据权利要求17至19任一项所述的方法,其特征在于,所述第三业务周期指示信息的表示方法为:采用比特形式所表示的下一个数据包位于相对于当前周期的第几个周期;或,采用比特形式所表示的相邻数据包之间的周期间隔;或,采用比特形式所表示的业务周期中所包括的最小周期个数;或,采用比特形式所表示的业务周期中所包括的资源池周期个数;或,采用比特形式所表示的业务周期中所包括的无线帧个数;或,采用比特形式所表示的业务周期中所包括的子帧个数;或,采用比特形式所表示的业务周期中所包括的侧行同步信号的周期个数。
- 一种上行数据传输方法,其特征在于,包括:基站接收第四用户设备发送的第三业务周期指示信息,所述第三业务周期指示信息用于指示待发送数据的业务周期为第三周期;所述基站根据所述第三业务周期指示信息,为所述第四用户设备分配满足所述第三周期的第一上行传输资源;所述基站向所述第四用户设备发送第一上行传输资源指示信息,所述第一上行传输资源指示信息用于指示满足所述第三周期的第一上行传输资源。
- 根据权利要求21所述的方法,其特征在于,所述基站向所述第四用户设备发送第三传输资源指示信息之后,所述方法还包括:当接收到所述第四用户设备的第四业务周期指示信息时,所述基站根据所述第四业务周期指示信息,对上行传输资源进行重新分配,所述第四业务周期指示信息用于指示待发送数据的业务周期变化为第四周期。
- 根据权利要求22所述的方法,其特征在于,所述基站根据所述第四业务周期指示信息,对上行传输资源进行重新分配包括:所述基站为所述第四用户设备分配满足所述第四周期的第二上行传输资源,向所述第四用户设备发送第二上行传输资源指示信息,所述第二上行传输资源指示信息用于指示所述第四传输资源。
- 根据权利要求21至23任一项所述的方法,其特征在于,所述第三业务周期指示信息承载于上行传输资源请求、BSR、RRC信令、上行控制信道或MAC CE中。
- 根据权利要求21至24任一项所述的方法,其特征在于,所述第三业务周期指示信息的表示方法为:采用比特形式所表示的下一个数据包位于相对于当前周期的第几个周期;或,采用比特形式所表示的相邻数据包之间的周期间隔;或,采用比特形式所表示的业务周期中所包括的最小周期个数;或,采用比特形式所表示的业务周期中所包括的资源池周期个数;或,采用比特形式所表示的业务周期中所包括的无线帧个数;或,采用比特形式所表示的业务周期中所包括的子帧个数;或,采用比特形式所表示的业务周期中所包括的侧行同步信号的周期个数。
- 一种用户设备,其特征在于,包括:生成单元,用于根据待发送数据的业务周期,生成UE的业务周期指示信息;添加单元,用于将所述业务周期指示信息添加至所述待发送数据中,得到D2D数据,所述D2D数据包括所述业务周期指示信息;发送单元,用于发送所述D2D数据。
- 根据权利要求26所述的用户设备,其特征在于,所述业务周期指示信息为:采用比特形式所表示的下一个数据包位于相对于当前周期的第几个周期;或,采用比特形式所表示的相邻数据包之间的周期间隔;或,采用比特形式所表示的业务周期中所包括的最小周期个数;或,采用比特形式所表示的业务周期中所包括的资源池周期个数;或,采用比特形式所表示的业务周期中所包括的无线帧个数;或,采用比特形式所表示的业务周期中所包括的子帧个数;或,采用比特形式所表示的业务周期中所包括的侧行同步信号的周期个数。
- 根据权利要求26或27所述的用户设备,其特征在于,所述D2D数据为调度分配SA信息或D2D通信的业务数据。
- 一种用户设备,其特征在于,包括:接收单元,用于接收UE的D2D数据,所述D2D数据包括所述UE的业务周期指示信息;确定单元,用于根据所述UE的业务周期指示信息和时频资源占用指示信息,确定空闲传输资源;发送单元,用于在所述空闲传输资源上进行D2D通信。
- 根据权利要求29所述的用户设备,其特征在于,所述业务周期指示信息为:采用比特形式所表示的下一个数据包位于相对于当前周期的第几个周期; 或,采用比特形式所表示的相邻数据包之间的周期间隔;或,采用比特形式所表示的业务周期中所包括的最小周期个数;或,采用比特形式所表示的业务周期中所包括的资源池周期个数;或,采用比特形式所表示的业务周期中所包括的无线帧个数;或,采用比特形式所表示的业务周期中所包括的子帧个数;或,采用比特形式所表示的业务周期中所包括的侧行同步信号的周期个数。
- 根据权利要求29或30所述的用户设备,其特征在于,所述D2D数据为调度分配SA信息或D2D通信的业务数据。
- 一种用户设备,其特征在于,包括:发送单元,用于向基站发送第一业务周期指示信息,所述第一业务周期指示信息用于指示待发送数据的业务周期为第一周期;接收单元,用于接收所述基站发送的第一传输资源指示信息,所述第一传输资源指示信息用于指示满足所述第一周期的第一传输资源;所述发送单元,用于在所述第一传输资源上进行D2D通信;所述发送单元还用于当业务周期发生变化时,向所述基站发送第二业务周期指示信息,所述第二业务周期指示信息用于指示待发送数据的业务周期变化为第二周期,其中,所述第一周期与所述第二周期不同。
- 根据权利要求32所述的用户设备,其特征在于,所述接收单元还用于接收所述基站发送的第二传输资源指示信息,所述第二传输资源指示信息用于指示满足所述第二周期的第二传输资源;所述发送单元,还用于在所述第二传输资源上进行D2D通信。
- 根据权利要求32或33任一项所述的用户设备,其特征在于,所述第一业务周期指示信息和所述第二业务周期指示信息承载于D2D传输资源请求、BSR、RRC信令、上行控制信道或MAC CE中。
- 根据权利要求32至34任一项所述的用户设备,其特征在于,所述发 送单元用于在所述第一传输资源上发送D2D数据,所述D2D数据包括所述第一业务周期指示信息。
- 根据权利要求35所述的用户设备,其特征在于,所述D2D数据为调度分配SA信息或D2D通信的业务数据。
- 根据权利要求32至36任一项所述的用户设备,其特征在于,所述第一业务周期指示信息和所述第二业务周期指示信息的表示方法为:采用比特形式所表示的下一个数据包位于相对于当前周期的第几个周期;或,采用比特形式所表示的相邻数据包之间的周期间隔;或,采用比特形式所表示的业务周期中所包括的最小周期个数;或,采用比特形式所表示的业务周期中所包括的资源池周期个数;或,采用比特形式所表示的业务周期中所包括的无线帧个数;或,采用比特形式所表示的业务周期中所包括的子帧个数;或,采用比特形式所表示的业务周期中所包括的侧行同步信号的周期个数。
- 一种基站,其特征在于,包括:接收单元,用于接收UE发送的第一业务周期指示信息,所述第一业务周期指示信息用于指示待发送数据的业务周期为第一周期;分配单元,用于根据所述第一业务周期指示信息,为所述UE分配满足所述第一周期的第一传输资源;发送单元,用于向所述UE发送第一传输资源指示信息,所述第一传输资源指示信息用于指示所述第一传输资源;所述分配单元还用于当接收到所述UE的第二业务周期指示信息时,根据所述第二业务周期指示信息,对传输资源进行重新分配,所述第二业务周期指示信息用于指示待发送数据的业务周期变化为第二周期。
- 根据权利要求38所述的基站,其特征在于,所述分配单元用于为所述UE分配满足所述第二周期的第二传输资源,向所述UE发送第二传输资源指示信息,所述第二传输资源指示信息用于指示所述第二传输资源。
- 根据权利要求38或39所述的基站,其特征在于,所述第一业务周期 指示信息和所述第二业务周期指示信息承载于D2D传输资源请求、BSR、RRC信令、上行控制信道或MAC CE中。
- 根据权利要求38至40任一项所述的基站,其特征在于,所述第一业务周期指示信息和所述第二业务周期指示信息的表示方法为:采用比特形式所表示的下一个数据包位于相对于当前周期的第几个周期;或,采用比特形式所表示的相邻数据包之间的周期间隔;或,采用比特形式所表示的业务周期中所包括的最小周期个数;或,采用比特形式所表示的业务周期中所包括的资源池周期个数;或,采用比特形式所表示的业务周期中所包括的无线帧个数;或,采用比特形式所表示的业务周期中所包括的子帧个数;或,采用比特形式所表示的业务周期中所包括的侧行同步信号的周期个数。
- 一种用户设备,其特征在于,包括:发送单元,用于向基站发送第三业务周期指示信息,所述第三业务周期指示信息用于指示待发送数据的业务周期为第三周期;接收单元,用于接收所述基站发送的第一上行传输资源指示信息,所述第一上行传输资源指示信息用于指示满足所述第三周期的第一上行传输资源;所述发送单元还用于在所述第一上行传输资源上进行上行数据传输。
- 根据权利要求42所述的用户设备,其特征在于,所述发送单元还用于当业务周期发生变化时,向所述基站发送第四业务周期指示信息,所述第四业务周期指示信息用于指示待发送数据的业务周期变化为第四周期,其中,所述第三周期与所述第四周期不同;所述接收单元还用于接收所述基站发送的第二上行传输资源指示信息,所述第二上行传输资源指示信息用于指示满足所述第四周期的第二上行传输资源;所述发送单元还用于在所述第二上行传输资源上进行上行数据传输。
- 根据权利要求42所述的用户设备,其特征在于,所述第三业务周期指示信息承载于上行传输资源请求、BSR、RRC信令、上行控制信道或MAC CE中。
- 根据权利要求42至44任一项所述的方法,其特征在于,所述第三业务周期指示信息的表示方法为:采用比特形式所表示的下一个数据包位于相对于当前周期的第几个周期;或,采用比特形式所表示的相邻数据包之间的周期间隔;或,采用比特形式所表示的业务周期中所包括的最小周期个数;或,采用比特形式所表示的业务周期中所包括的资源池周期个数;或,采用比特形式所表示的业务周期中所包括的无线帧个数;或,采用比特形式所表示的业务周期中所包括的子帧个数;或,采用比特形式所表示的业务周期中所包括的侧行同步信号的周期个数。
- 一种基站,其特征在于,包括:接收单元,用于接收UE发送的第三业务周期指示信息,所述第三业务周期指示信息用于指示待发送数据的业务周期为第三周期;分配单元,用于根据所述第三业务周期指示信息,为所述UE分配满足所述第三周期的第一上行传输资源;发送单元,用于向所述UE发送第一上行传输资源指示信息,所述第一上行传输资源指示信息用于指示满足所述第三周期的第一上行传输资源。
- 根据权利要求46所述的基站,其特征在于,所述分配单元还用于当接收到所述UE的第四业务周期指示信息时,根据所述第四业务周期指示信息,对上行传输资源进行重新分配,所述第四业务周期指示信息用于指示待发送数据的业务周期变化为第四周期。
- 根据权利要求47所述的基站,其特征在于,所述分配单元还用于为所述UE分配满足所述第四周期的第二上行传输资源,所述发送单元还用于向所述 UE发送第二上行传输资源指示信息,所述第二上行传输资源指示信息用于指示所述第四传输资源。
- 根据权利要求46至48任一项所述的基站,其特征在于,所述第三业务周期指示信息承载于上行传输资源请求、BSR、RRC信令、上行控制信道或MAC CE中。
- 根据权利要求46至49任一项所述的基站,其特征在于,所述第三业务周期指示信息的表示方法为:采用比特形式所表示的下一个数据包位于相对于当前周期的第几个周期;或,采用比特形式所表示的相邻数据包之间的周期间隔;或,采用比特形式所表示的业务周期中所包括的最小周期个数;或,采用比特形式所表示的业务周期中所包括的资源池周期个数;或,采用比特形式所表示的业务周期中所包括的无线帧个数;或,采用比特形式所表示的业务周期中所包括的子帧个数;或,采用比特形式所表示的业务周期中所包括的侧行同步信号的周期个数。
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| CN201680082661.0A CN108702612B (zh) | 2016-03-22 | 2016-03-22 | D2d通信方法及设备 |
| US16/107,140 US20180359620A1 (en) | 2016-03-22 | 2018-08-21 | D2D Communication Method And Device |
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| WO2019157726A1 (zh) * | 2018-02-14 | 2019-08-22 | Oppo广东移动通信有限公司 | 资源上报的方法、终端设备和网络设备 |
| EP3550905A1 (en) * | 2018-04-03 | 2019-10-09 | IDAC Holdings, Inc. | Resource pool sharing between network scheduled ue and autonomous scheduled ue transmissions |
| WO2020231302A1 (en) * | 2019-05-13 | 2020-11-19 | Telefonaktiebolaget Lm Ericsson (Publ) | Handling of radio resource between terminal devices |
| CN114125939B (zh) * | 2020-08-31 | 2024-11-19 | 华为技术有限公司 | 资源指示、资源选择方法及装置 |
| CN114205875B (zh) * | 2020-09-18 | 2025-09-05 | 华为技术有限公司 | 一种通信方法、装置及系统 |
| CN115190617B (zh) * | 2021-04-06 | 2025-06-10 | 华为技术有限公司 | 用于资源确定的方法及装置 |
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| CN108702612B (zh) | 2021-06-01 |
| EP3404944B1 (en) | 2022-04-27 |
| EP3404944A1 (en) | 2018-11-21 |
| EP3404944A4 (en) | 2018-11-21 |
| CN108702612A (zh) | 2018-10-23 |
| US20180359620A1 (en) | 2018-12-13 |
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