CN115150046A - Transmission resource selection method, device and user equipment - Google Patents
Transmission resource selection method, device and user equipment Download PDFInfo
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- CN115150046A CN115150046A CN202110354924.1A CN202110354924A CN115150046A CN 115150046 A CN115150046 A CN 115150046A CN 202110354924 A CN202110354924 A CN 202110354924A CN 115150046 A CN115150046 A CN 115150046A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 102
- 238000010187 selection method Methods 0.000 title abstract description 13
- 230000004913 activation Effects 0.000 claims abstract description 138
- 238000000034 method Methods 0.000 claims abstract description 26
- 230000000737 periodic effect Effects 0.000 claims description 45
- 238000004590 computer program Methods 0.000 claims description 16
- 238000004891 communication Methods 0.000 description 15
- 230000006870 function Effects 0.000 description 12
- 238000013468 resource allocation Methods 0.000 description 12
- 230000007246 mechanism Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 101000741965 Homo sapiens Inactive tyrosine-protein kinase PRAG1 Proteins 0.000 description 2
- 102100038659 Inactive tyrosine-protein kinase PRAG1 Human genes 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signaling for the administration of the divided path
- H04L5/0096—Indication of changes in allocation
- H04L5/0098—Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
A transmission resource selection method, a device and user equipment are provided, the method comprises: the first equipment acquires a selectable resource set; determining a preferred set of resources based on at least one of: the service type, the activation time and the optional resource set of the data to be sent; selecting a transmission resource for transmitting the data service from the preferred resource set. The invention can make the resource selected by the sender fall in the activation time of the receiver, and ensure the reliability of data transmission.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for selecting transmission resources, and a user equipment.
Background
The 5G NR is a global 5G standard system designed based on a completely new air interface of OFDM (Orthogonal Frequency Division Multiplexing), in which the 5G NR can perform physical direct communication, that is, the user equipment directly communicates with the user equipment, a link between the user equipment and the user equipment is referred to as SL (sidelink, direct link), and an interface is referred to as a PC5 interface. There are two resource allocation approaches on SL: mode 1 and Mode 2. The Mode 1 resource allocation Mode is a base station centralized allocation Mode, namely the base station allocates resources to the user equipment of the sender, and the user equipment of the sender directly uses the resources allocated by the base station to send data to the user equipment of the receiver; and the Mode 2 resource allocation Mode is that the user equipment at the sending party autonomously selects available resources from a resource pool for data transmission in a sensing Mode.
In a wireless communication network, since a user equipment generally uses a battery, in order to prolong the service time of the battery and avoid frequent battery replacement or charging, a DRX (Discontinuous Reception) mechanism is introduced for the purpose of saving energy. When the user equipment is configured with DRX, the user equipment monitors control information from the network equipment only under a specific condition or for a specific period of time. Thus, after the DRX is configured on the SL, the first ue sends data to the second ue through the SL, and needs to send SCI (Sidelink Control Information) first, and the second ue obtains necessary Information for data reception by monitoring the SCI, thereby correctly receiving the data. Also, for energy saving, the second ue should monitor the SCI only for a part of the period, and not continuously, i.e. the second ue should configure DRX to be in a state of being able to receive data only for a part of the time, which is usually called the active time.
After DRX is introduced to the SL, a Mode 2 resource allocation manner is adopted by the SL, and when a resource is selected for sending data to the second user equipment by using the Mode 2 resource allocation manner, how to ensure that the selected resource can fall within the activation time of the second user equipment does not exist in the present industry.
Disclosure of Invention
Embodiments of the present invention provide a method and an apparatus for selecting transmission resources, and user equipment, so that resources selected by a sender can fall within activation time of a receiver, and reliability of data transmission is ensured.
Therefore, the embodiment of the invention provides the following technical scheme:
the embodiment of the invention provides a transmission resource selection method, which comprises the following steps:
the first equipment acquires a selectable resource set;
determining a preferred set of resources based on at least one of: the service type, the activation time and the optional resource set of the data to be sent;
selecting a transmission resource for transmitting the data service from the preferred resource set.
Optionally, the activation time comprises a periodically initiated activation time and an aperiodically initiated activation time.
Optionally, the periodically started activation time comprises a time during which a duration timer runs, and the non-periodically started activation time comprises a time during which an inactivity timer runs and/or a time during which a retransmission timer runs.
Optionally, the service type of the data to be sent is aperiodic service;
the determining the preferred resource set according to the service type of the data to be sent and the selectable resource set includes:
And adding the transmission resources in the periodic activation time and the non-periodic activation time in the optional resource set into a preferred resource set.
Optionally, the service type of the data to be sent is a periodic service;
the determining the preferred resource set according to the service type of the data to be sent and the selectable resource set includes:
and adding the transmission resources in the activation time of the periodic starting in the optional resource set into a preferred resource set.
Optionally, the determining a preferred resource set according to the data service type to be sent and the optional resource set further includes:
and adding the transmission resources in the non-periodic activation time in the optional resource set into the preferred resource set.
Optionally, the method further comprises:
taking the resource indicated in the latest scheduling information as an initial resource, and taking the time which is positioned in a set time interval behind the initial resource and takes a reserved period as a cycle as reserved activation time; the set time period is any one of the following: setting the number of reserved periods and the time length.
Optionally, the method further comprises:
and the first equipment sends the set time interval to the second equipment.
An embodiment of the present invention further provides a transmission resource selection apparatus, where the apparatus includes:
the information acquisition module is used for acquiring the optional resource set;
a preferred resource set determination module for determining a preferred resource set based on at least one of: the service type, the activation time and the optional resource set of the data to be sent;
a resource selection module, configured to select a transmission resource for sending the data service from the preferred resource set.
Optionally, the activation time comprises a periodically initiated activation time and a non-periodically initiated activation time.
Optionally, the periodically started activation time comprises a time during which a duration timer runs, and the non-periodically started activation time comprises a time during which an inactivity timer runs and/or a time during which a retransmission timer runs.
Optionally, the service type of the data to be sent is aperiodic service;
the resource selection module is specifically configured to add transmission resources located in the periodic activation time and the aperiodic activation time in the selectable resource set to a preferred resource set.
Optionally, the service type of the data to be sent is a periodic service;
The resource selection module is specifically configured to add transmission resources located within the periodically started activation time in the selectable resource set to a preferred resource set.
Optionally, the resource selection module is further configured to add transmission resources located in the aperiodic activation time in the selectable resource set to a preferred resource set.
Optionally, the apparatus further comprises:
the resource selection module is further configured to use the resource indicated in the latest scheduling information as an initial resource, and use a time that occurs within a set time period after the initial resource and takes a reserved period as a reserved activation time; the set time period is any one of the following: setting the number of reserved cycles and the time length.
Optionally, the apparatus further comprises:
and the information indicating module is used for sending indicating information, and the indicating information is used for indicating the set time interval.
An embodiment of the present invention further provides a user equipment, which is characterized by including the foregoing transmission resource selection apparatus.
Embodiments of the present invention further provide a computer-readable storage medium, which is a non-volatile storage medium or a non-transitory storage medium, and has a computer program stored thereon, where the computer program is executed by a processor, and the computer program executes the steps of the foregoing method.
The embodiment of the present invention further provides an electronic device, which includes a memory and a processor, where the memory stores a computer program that can be executed on the processor, and the processor executes the steps of the method when executing the computer program.
According to the method, the apparatus, and the user equipment for selecting transmission resources provided in the embodiments of the present invention, when a Mode 2 resource allocation manner is adopted after DRX is introduced on a SL, in order to ensure that the selected resources can fall within activation time of a receiver, on the basis of an optional resource set, for example, an optional resource set specified in an existing relevant protocol, or an optional resource set defined in the prior art, or an optional resource set proposed in other subsequent relevant technical schemes, a preferred resource set is generated according to at least one of a service type of data to be transmitted, activation time, and an optional resource set, and further, transmission resources are selected from the preferred resource set to transmit data, so that resources selected by a sender can fall within activation time of the receiver, and reliability of data transmission is ensured.
Drawings
Figure 1 is a diagram of a prior art DRX cycle mechanism;
FIG. 2 is a diagram illustrating an inactive timer in a DRX cycle in the prior art;
Fig. 3 is a flow chart of a transmission resource selection method according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a preferred resource set for aperiodic traffic in an embodiment of the present invention;
fig. 5 is a schematic diagram of a preferred resource set for periodic traffic according to an embodiment of the present invention;
fig. 6 is another flow chart of a transmission resource selection method according to an embodiment of the present invention;
fig. 7 is a schematic diagram of reserved activation time for periodic traffic configuration in the embodiment of the present invention;
fig. 8 is a block diagram of a transmission resource selection apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
First, a description will be given of a system to which the present application is applied and corresponding terms.
The technical solution of the present application is applicable to a fifth generation (5th generation, 5g) communication system, a fourth generation (4th generation, 4g), a third generation (3rd generation, 3g) communication system, and various future communication systems, such as a sixth generation (6th generation, 6g), a seventh generation (7th generation, 7g), and the like, which are not limited in the embodiments of the present application.
The technical solution of the present application is also applicable to different network architectures, including but not limited to a relay network architecture, a dual link architecture, a Vehicle-to-any-object communication (V2X) architecture, a Device-to-Device communication (D2D) architecture, and the like.
The device in the embodiment of the present application includes a base station and a base station controller of an access network, and may further include a terminal.
A Base Station (BS) in the embodiment of the present application, which may also be referred to as a base station device, is a device deployed in a Radio Access Network (RAN) to provide a wireless communication function. For example, the device providing the Base Station function in the 2G network includes a Base Transceiver Station (BTS), the device providing the Base Station function in the 3G network includes a node B (NodeB), the device providing the Base Station function in the 4G network includes an Evolved node B (Evolved NodeB, eNB), and in a Wireless Local Area Network (WLAN), the device providing the Base Station function is an Access Point (AP), a device gNB providing the Base Station function in a 5G New Radio (New Radio, NR), and a node B (ng-eNB) that continues to evolve, where the gNB and the terminal communicate with each other by using an NR technique, and the ng-eNB and the terminal communicate with each other by using an Evolved Universal Terrestrial Radio Access (E-a) technique, and both the utrnb and the ng-eNB may be connected to the 5G core network. The base station in the embodiment of the present application also includes a device and the like that provide a function of the base station in a future new communication system.
The Base Station Controller in this embodiment may also be referred to as a Base Station Controller device, and is a device for managing a Base Station, for example, a Base Station Controller (BSC) in a 2G Network, a Radio Network Controller (RNC) in a 3G Network, or a device for controlling and managing a Base Station in a future new communication system.
The terminal in this embodiment may also be referred to as a terminal device, and may refer to various forms of User Equipment (UE), an access terminal, a subscriber unit, a subscriber Station, a Mobile Station (MS), a remote Station, a remote terminal, a Mobile device, a User terminal, a wireless communication device, a User agent, or a User Equipment. The terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with a Wireless communication function, a computing device or other processing device connected to a Wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G Network or a terminal device in a Public Land Mobile Network (PLMN) for future evolution, and the like, which is not limited in this embodiment of the present application.
In the embodiment of the application, a unidirectional communication link from an access network to a terminal is defined as a downlink, data transmitted on the downlink is downlink data, and the transmission direction of the downlink data is called as a downlink direction; the unidirectional communication link from the terminal to the access network is an uplink, the data transmitted on the uplink is uplink data, and the transmission direction of the uplink data is referred to as an uplink direction.
In order to better understand the scheme of the present invention, a brief description of the existing DRX mechanism between the base station and the terminal is first provided below.
When the terminal is configured with DRX, the terminal monitors Control information from the network device, for example, DCI (Downlink Control information) carried on a PDCCH (Physical Downlink Control channel), only under a specific condition or in a specific time period, where the Control information includes Control information for scheduling uplink and Downlink resources, control information for adjusting terminal transmission power, and the like. Since the terminal does not need to detect the control information every moment, energy consumption can be reduced.
The DRX cycle mechanism is shown in fig. 1, where a terminal periodically starts an on duration timer (duration timer), and during the duration of the on duration timer, the terminal needs to monitor downlink control information, and at other times, the terminal does not need to monitor downlink control information. Wherein the duration of the DRX cycle and duration timers is configurable.
The following problems may result if DRX only introduces DRX cycle and duration timers: i.e., when the data arrives just before the duration timer expires, the base station has only a short time to schedule the terminal and then just waits for the next duration timer to start. If the data volume required by a service is large, the base station needs to schedule for many times to finish transmission, and part of the data is delayed to the next duration timer, which causes time delay.
Based on the above problem, the current DRX mechanism further introduces an inactivity timer (inactivity timer), which is started when the terminal receives a control message (indicating a newly transmitted DCI) for scheduling a new transmission, as shown in fig. 2.
The DRX mechanism specifies that the terminal needs to monitor the downlink control information as long as one timer is running, thus avoiding the problem that the base station enters the DRX state due to the timeout of the duration timer without completing scheduling.
In addition, the DRX mechanism also takes into account the retransmission case: when the terminal receives a downlink data but does not decode successfully, the terminal feeds back NACK to the base station to request the base station to retransmit, and if the duration timer and the inactive timer are overtime after the retransmission is repeated for many times, the terminal enters a dormant state and cannot receive retransmission scheduling. For this purpose, the DRX mechanism also sets a retransmission timer (retransmission timer) for receiving the retransmission schedule. When a terminal feeds back NACK to a base station, a HARQ (Hybrid Automatic Repeat request) RTT (Round-trip time) timer is started, and the terminal does not detect PDCCH (physical downlink control channel) scheduling during the HARQ RTT timer; when the HARQ RTT timer is overtime, the terminal starts a retransmission timer, and when a retransmission schedule is received during the operation period of the retransmission timer, the retransmission timer is stopped.
The above describes the application of DRX between a base station and a terminal, when two ues on SL need to send data, they first send SCI, and the function of SCI on SL is similar to that of DCI on Uu, so after DRX is introduced into SL, the operation principle of the inactivity timer and retransmission timer in SL DRX is also similar to that in Uu DRX, for example, the inactivity timer is started when receiving SCI for new transmission on SL.
The Mode 2 resource allocation Mode is that the user equipment at the sending party autonomously selects available resources from a resource pool for data transmission in a sensing Mode. The resource pool is usually shared by a plurality of user equipments, each user equipment needs to monitor or sense a period of time before sending data, determine that resources which are not used or interfered by other user equipments form an available resource set, and further randomly select resources from the resource set for use, wherein the available or available resource set is actually a part of or all time-frequency resources within a period of time and a period of frequency range.
After introducing DRX into SL, when the Mode 2 resource allocation scheme is adopted on SL, it is necessary to perform certain restriction on the selectable resource set so that it meets the requirement that "the selected resource falls within the activation time of the receiving user equipment". To this end, embodiments of the present invention provide a method, an apparatus, and a user equipment for selecting a transmission resource, where a corresponding resource is selected from an optional resource set according to a service type and activation time of data to be sent, a preferred resource set is generated, and a transmission resource is selected from the preferred resource set to send data.
As shown in fig. 3, it is a flowchart of a transmission resource selection method according to an embodiment of the present invention, including the following steps:
in step 301, a first device obtains a set of selectable resources.
In the embodiment of the present invention, the first device may be an SL sender, or may be a sender that performs resource selection by using a self-service resource selection method.
The optional resource set may be an optional resource set specified in an existing relevant protocol, or an optional resource set defined in the prior art, or an optional resource set proposed in other subsequent relevant technical solutions, which is not limited in the embodiment of the present invention.
The service type of the data to be sent may include: aperiodic traffic, periodic traffic. The activation time may be an activation time between a sender user equipment and a receiver user equipment.
The activation times may include periodically initiated activation times and non-periodically initiated activation times. Wherein, the periodically started activation time may include a time of a duration timer running in the prior art, and the non-periodically started activation time may include a time of an inactive timer running and/or a time of a retransmission timer running in the prior art.
For aperiodic service, since only the resource selected this time needs to be considered in the activation time of the receiving party, when selecting resources, the transmission resources in the periodic activation time and the aperiodic activation time in the selectable resource set may be added to the preferred resource set, as shown in fig. 4.
For the periodic service, it is necessary to ensure that the transmission is within the activation time of the receiving party, and it is also necessary to ensure that the subsequent resources are also within the activation time. For this purpose, when resource selection is performed, transmission resources in the activation time of the periodic start in the selectable resource set may be added to a preferred resource set, as shown in fig. 5. Since the period of the activation time of the periodic initiation is the same as the period of the transmission resource in the preferred resource set, it can be ensured that the transmission resource of each subsequent time can fall within the activation time of the receiving party.
Optionally, transmission resources in the periodic activation time and the inactivity timer in the optional resource set may also be added to the preferred resource set.
Optionally, transmission resources in the periodic activation time and in a retransmission timer in the optional resource set may also be added to the preferred resource set.
Optionally, transmission resources in the optional resource set within the periodic activation time and the aperiodic activation time may be further added to the preferred resource set, where the aperiodic activation time includes a time when an inactivity timer runs and a time when a retransmission timer runs.
The periodic activation time may be an already started periodic activation time or a potentially started periodic activation time, for example, since the duration timer is periodically started with DRX as a period, the operation time of the potential duration timer may be expected even if the next DRX period is not yet reached.
The aperiodic activation time can be a non-periodic time that has been initiated.
In the method for selecting transmission resources provided in the embodiment of the present invention, when a Mode 2 resource allocation manner is adopted after DRX is introduced on SL, in order to ensure that the selected resources can fall within activation time of a receiver, on the basis of an optional resource set, such as an optional resource set specified in an existing relevant protocol, or an optional resource set defined in the prior art, or an optional resource set proposed by other subsequent relevant technical schemes, the optional resource set is further limited according to a service type characteristic and activation time of data to be transmitted, a corresponding resource is selected from the optional resource set to generate a preferred resource set, and then transmission resources are selected from the preferred resource set to transmit the data, so that the resources selected by a sender can fall within the activation time of the receiver, and reliability of data transmission is ensured.
Further, in the case that the transmission resource in the aperiodic activation time in the optional resource set is added to the preferred resource set, in order to ensure that the transmission resource in the later period can fall within the activation time of the receiving party, a new activation time may be further introduced, which is called as a reserved activation time for convenience of description, which is described in detail below.
As shown in fig. 6, it is another flowchart of a transmission resource selection method according to an embodiment of the present invention, including the following steps:
In the scheduling information such as SCI, the reservation period (reservation interval) is not 0, which indicates that the resource is a periodic reserved resource and the reservation period is used as a period; if the reservation period is 0, it indicates that the resource is a one-time resource, so the receiving ue can add a subsequent activation time accordingly. Moreover, both sender and receiver consider: starting from the resource indicated in the scheduling information such as SCI which was not 0 last time, a reservation period is taken as a period, and all subsequent possible resource positions are set as reservation activation time before the possible release time of the periodic resource.
Optionally, step 606 may not depend on steps 601 to 605, that is, no matter what manner, including the prior art or other techniques, the terminal determines the transmission resource for transmitting the data service, and after the scheduling information is transmitted, the reserved activation time may be determined according to the manner described in step 606.
Correspondingly, in the embodiment of the present invention, the resource indicated in the latest scheduling information is used as an initial resource, the time occurring within a set time period after the initial resource and with a reserved period as a cycle is used as a reserved activation time, and the transmission resource within the reserved activation time is added into the preferred resource set; the set period may be any one of: the number of the reserved periods and the set time length.
The number of the reserved cycles and the set time duration are configurable parameters, for example, the number of the reserved cycles is represented by an sl-reselection After parameter, and the set time duration is represented by an sl-reselection Long parameter. The first device may interact with a second device, that is, a receiving device, and send the configuration parameter to the receiving device in advance, for example, the configuration parameter may be carried by a specific message.
The configuration parameters are utilized to control the sender to release the periodic resources: when the transmitting side does not use the periodic resource of the reserved period for the continuous sl-reselection after the transmitting side does not use the periodic resource of the reserved period, the periodic resource can be released, and resource selection is carried out again. As shown in fig. 7, when sl-ReselectAfter is 2, the time of the resource locations in the following two reservation periods can be considered as the reservation activation time.
Therefore, even if the resource is not selected within the periodic activation time of the reservation period when the sender selects the resource for the first time, the configurable parameter can be sent to the receiver through the first data interaction, so that the two parties establish the unified knowledge of the subsequent reservation activation time, and the correct reception of the subsequent data is effectively ensured.
In the method for selecting transmission resources provided in the embodiment of the present invention, when a Mode 2 resource allocation manner is adopted after DRX is introduced on SL, in order to ensure that the selected resources can fall within activation time of a receiver, on the basis of an optional resource set, such as an optional resource set specified in an existing relevant protocol, or an optional resource set defined in the prior art, or an optional resource set proposed by other subsequent relevant technical schemes, a preferred resource set is determined according to a service type characteristic and activation time of data to be transmitted, for a periodic service, not only transmission resources located within the activation time of periodic start in the optional resource set are added to the preferred resource set, but also transmission resources located within the aperiodic activation time are added to the preferred resource set, and by introducing the reserved activation time and corresponding configuration parameters, both sides establish unified knowledge of subsequent reserved activation time; and then selecting transmission resources from the preferred resource set to transmit data, so that the resources selected by the sender can fall in the activation time of the receiver, and the reliability of data transmission is ensured.
Correspondingly, an embodiment of the present invention further provides a transmission resource selection apparatus, as shown in fig. 8, which is a structural block diagram of the apparatus.
In this embodiment, the apparatus includes the following modules:
an information obtaining module 801, configured to obtain an optional resource set and activation time for which downlink control information needs to be monitored;
a preferred resource set determining module 802, configured to determine a preferred resource set according to the service type of the data to be sent, the activation time, and the optional resource set;
a resource selecting module 803, configured to select a transmission resource for sending the data service from the preferred resource set.
In the embodiment of the present invention, the selectable resource set may be a selectable resource set specified in an existing relevant protocol, or a selectable resource set defined in the prior art, or a selectable resource set proposed in other subsequent relevant technical solutions, which is not limited in the embodiment of the present invention.
The activation times may include periodically initiated activation times and non-periodically initiated activation times. Wherein the periodically started activation time includes a time of a duration timer running in the prior art, and the non-periodically started activation time may include a time of an inactive timer running and/or a time of a retransmission timer running in the prior art.
The service type of the data to be sent may include: aperiodic traffic, periodic traffic. Accordingly, the preferred resource set determining module 802 may select corresponding resources from the selectable resource sets according to characteristics of different service types, and generate a preferred resource set.
For aperiodic service, since only the resource selected this time needs to be considered in the activation time of the receiving party, when selecting the resource, the preferred resource set determining module 802 may add the transmission resources in the periodic activation time and the aperiodic activation time in the selectable resource set to the preferred resource set,
for the periodic service, it is necessary to ensure that the transmission is within the activation time of the receiving party, and it is also necessary to ensure that the subsequent resources are also within the activation time. To this end, when selecting resources, the preferred resource set determining module 802 may add transmission resources located in the activation time of the periodic start in the optional resource set to the preferred resource set. Since the periodically started activation time, such as DRX, has the same period as the transmission resource in the preferred resource set, it can be ensured that the transmission resource at each subsequent time falls within the activation time of the receiving side.
In another embodiment of the apparatus of the present invention, the preferred resource set determining module 802 may further add transmission resources located in the aperiodic activation time from the selectable resource sets to a preferred resource set.
The transmission resource selection apparatus provided in the embodiment of the present invention, when a Mode 2 resource allocation manner is adopted after DRX is introduced on SL, in order to ensure that the selected resource can fall within the activation time of the receiver, on the basis of the selectable resource set, such as a selectable resource set specified in an existing relevant protocol, or a selectable resource set defined in the prior art, or a selectable resource set proposed by other subsequent related technical schemes, further limits the selectable resource set according to the service type characteristics and the activation time of data to be transmitted, selects a corresponding resource from the selectable resource set to generate a preferred resource set, and further selects a transmission resource from the preferred resource set to transmit the data, so that the resource selected by the sender can fall within the activation time of the receiver, and ensures reliability of data transmission.
In order to ensure that the transmission resource in the later period can fall within the activation time of the receiving party in the case of adding the transmission resource in the aperiodic activation time in the optional resource set to the preferred resource set, in another embodiment of the apparatus of the present invention, a new activation time, that is, the reserved activation time mentioned in the foregoing embodiment of the method of the present invention, may be further introduced. Correspondingly, in this embodiment, the preferred resource set determining module 802 may further use the resource indicated in the latest scheduling information as an initial resource, and use a time that occurs within a set time period after the initial resource and takes a reserved period as a reserved activation time; the set time period is any one of the following: setting the number of reserved cycles and the time length. The number of the reserved periods and the set duration are configurable parameters.
Further, the apparatus further comprises: an information indication module (not shown) for sending indication information, wherein the indication information is used for indicating the set time period. That is, the indication information is transmitted to the receiving side device.
It should be noted that different messages may be used to carry the indication information according to different application scenarios.
In the transmission resource selection apparatus and the user equipment provided in the embodiments of the present invention, when a Mode 2 resource allocation manner is adopted after DRX is introduced on SL, on the basis of an optional resource set, such as an optional resource set specified in an existing relevant protocol, or an optional resource set defined in the prior art, or an optional resource set proposed by other subsequent relevant technical schemes, in order to ensure that a selected resource can fall within activation time of a receiver, a preferred resource set is determined according to a service type characteristic and activation time of data to be transmitted, for a periodic service, not only a transmission resource located within the activation time of periodic start in the optional resource set is added to the preferred resource set, but also a transmission resource located within the aperiodic activation time is added to the preferred resource set, and by introducing reserved activation time and corresponding configuration parameters, both sides establish unified knowledge of subsequent reserved activation time; and further, the transmission resources are selected from the preferred resource set to send data, so that the resources selected by the sender can fall within the activation time of the receiver, and the reliability of data transmission is ensured.
Correspondingly, an embodiment of the present invention further provides a user equipment, including the transmission resource selection apparatus in the foregoing embodiments.
In a specific implementation, the transmission resource selection device may correspond to a Chip with a specific transmission resource selection function in the ue, such as a System-On-a-Chip (SOC), a baseband Chip, and so On; or the chip module group is corresponding to the chip module group with the transmission resource selection function in the user equipment; or to a chip module having a chip with a data processing function.
In a specific implementation, each module/unit included in each apparatus and product described in the foregoing embodiments may be a software module/unit, may also be a hardware module/unit, or may also be a part of a software module/unit and a part of a hardware module/unit.
For example, for each device or product applied to or integrated into a chip, each module/unit included in the device or product may be implemented by hardware such as a circuit, or at least a part of the module/unit may be implemented by a software program running on a processor integrated within the chip, and the rest (if any) part of the module/unit may be implemented by hardware such as a circuit; for each device and product applied to or integrated with the chip module, each module/unit included in the device and product may be implemented by hardware such as a circuit, and different modules/units may be located in the same component (e.g., a chip, a circuit module, etc.) or different components of the chip module, or at least part of the modules/units may be implemented by a software program running on a processor integrated inside the chip module, and the rest (if any) part of the modules/units may be implemented by hardware such as a circuit; for each device and product applied to or integrated in the terminal, each module/unit included in the device and product may be implemented by using hardware such as a circuit, and different modules/units may be located in the same component (e.g., a chip, a circuit module, etc.) or different components in the terminal, or at least part of the modules/units may be implemented by using a software program running on a processor integrated in the terminal, and the rest (if any) part of the modules/units may be implemented by using hardware such as a circuit.
An embodiment of the present invention further provides a computer-readable storage medium, where the computer-readable storage medium is a non-volatile storage medium or a non-transitory storage medium, and a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program performs the steps of the transmission resource selection method provided in the embodiment corresponding to fig. 3. Alternatively, the computer program is executed by a processor to execute the steps of the transmission resource selection method provided by the embodiment corresponding to fig. 3.
The embodiment of the present invention further provides another transmission resource selection apparatus, which includes a memory and a processor, where the memory stores a computer program that can be executed on the processor, and the processor executes the steps of the transmission resource selection method provided in the embodiment corresponding to fig. 3 when executing the computer program.
An embodiment of the present invention further provides an electronic device, which includes a memory and a processor, where the memory stores a computer program that can be executed on the processor, and the processor executes the steps of the transmission resource selection method provided in the embodiment corresponding to fig. 3 when executing the computer program.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (19)
1. A method for transmission resource selection, the method comprising:
the first equipment acquires a selectable resource set;
determining a preferred set of resources based on at least one of: the service type, the activation time and the optional resource set of the data to be sent;
selecting a transmission resource for transmitting the data service from the preferred resource set.
2. The method of claim 1, wherein the activation times include periodically initiated activation times and non-periodically initiated activation times.
3. The method according to claim 2, wherein the periodically initiated activation time comprises a time during which a duration timer runs, and wherein the non-periodically initiated activation time comprises a time during which a non-activation timer runs and/or a time during which a retransmission timer runs.
4. The method of claim 3, wherein the traffic type of the data to be transmitted is aperiodic traffic;
the determining the preferred resource set according to the service type of the data to be sent and the optional resource set comprises:
and adding the transmission resources in the periodic activation time and the aperiodic activation time in the optional resource set into a preferred resource set.
5. The method according to claim 3, wherein the traffic type of the data to be transmitted is periodic traffic;
the determining the preferred resource set according to the service type of the data to be sent and the optional resource set comprises:
and adding the transmission resources in the activation time of the periodic starting in the optional resource set into a preferred resource set.
6. The method of claim 5, wherein the determining a preferred resource set according to the type of data traffic to be sent and the optional resource set further comprises:
and adding the transmission resources in the non-periodic activation time in the optional resource set into the preferred resource set.
7. The method of claim 6, further comprising:
taking the resource indicated in the latest scheduling information as an initial resource, and taking the time which is positioned in a set time period behind the initial resource and appears by taking a reserved period as a period as reserved activation time; the set time period is any one of the following: setting the number of reserved cycles and the time length.
8. The method of claim 7, further comprising:
And the first equipment sends the set time interval to the second equipment.
9. An apparatus for transmission resource selection, the apparatus comprising:
the information acquisition module is used for acquiring the optional resource set;
a preferred resource set determination module for determining a preferred resource set based on at least one of: the service type, the activation time and the optional resource set of the data to be sent;
a resource selection module, configured to select a transmission resource for sending the data service from the preferred resource set.
10. The apparatus of claim 9, wherein the activation times comprise periodically initiated activation times and non-periodically initiated activation times.
11. The apparatus of claim 10, wherein the periodically initiated activation time comprises a duration timer running time, and wherein the non-periodically initiated activation time comprises an inactivity timer running time and/or a retransmission timer running time.
12. The apparatus of claim 11, wherein the traffic type of the data to be transmitted is aperiodic traffic;
the resource selection module is specifically configured to add transmission resources located in the periodic activation time and the aperiodic activation time in the selectable resource set to a preferred resource set.
13. The apparatus of claim 11, wherein the traffic type of the data to be transmitted is periodic traffic;
the resource selection module is specifically configured to add transmission resources located within the periodically started activation time in the selectable resource set to a preferred resource set.
14. The apparatus of claim 13,
the resource selection module is further configured to add transmission resources located in the aperiodic activation time in the selectable resource set to a preferred resource set.
15. The apparatus of claim 14, further comprising:
the resource selection module is further configured to use the resource indicated in the latest scheduling information as an initial resource, and use a time that occurs within a set time period after the initial resource and with a reserved period as a reserved activation time; the set time period is any one of the following: setting the number of reserved periods and the time length.
16. The apparatus of claim 15, further comprising:
and the information indicating module is used for sending indicating information, and the indicating information is used for indicating the set time interval.
17. A user equipment comprising a transmission resource selection apparatus according to any one of claims 9 to 16.
18. A computer-readable storage medium, being a non-volatile storage medium or a non-transitory storage medium, having a computer program stored thereon, which, when being executed by a processor, performs the steps of the method according to any of the claims 1 to 8.
19. An electronic device comprising a memory and a processor, the memory having stored thereon a computer program being executable on the processor, wherein the processor, when executing the computer program, performs the steps of the method of any of claims 1 to 8.
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| CN202110354924.1A CN115150046A (en) | 2021-03-31 | 2021-03-31 | Transmission resource selection method, device and user equipment |
| PCT/CN2022/078229 WO2022206248A1 (en) | 2021-03-31 | 2022-02-28 | Transmission resource selection method and apparatus, and user equipment |
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| WO2024159464A1 (en) * | 2023-02-01 | 2024-08-08 | Nokia Shanghai Bell Co., Ltd | Device, method and computer readable medium for sidelink communications |
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