CN110536426B - Information indication method and device and computer readable storage medium - Google Patents
Information indication method and device and computer readable storage medium Download PDFInfo
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- CN110536426B CN110536426B CN201810909678.XA CN201810909678A CN110536426B CN 110536426 B CN110536426 B CN 110536426B CN 201810909678 A CN201810909678 A CN 201810909678A CN 110536426 B CN110536426 B CN 110536426B
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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
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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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
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
Abstract
Disclosed herein are an information indicating method, apparatus and computer-readable storage medium, including: generating service indication information by User Equipment (UE); the service indication information is used for indicating the transmission condition of the first service on the second transmission resource, the second transmission resource is a scheduling-free resource in the first transmission resource, the first transmission resource is a time-frequency resource, and the second service is transmitted on the first transmission resource. The UE sends the service indication information to the base station, so that the base station can know the transmission condition of the first service on the second transmission resource, the first transmission resource (including the second transmission resource) is fully utilized to transmit the second service when the first service is not required to be transmitted, and the timeliness of the transmission of the first service on the second transmission resource is ensured when the first service is required to be transmitted.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to an information indicating method and apparatus, and a computer-readable storage medium.
Background
The Fifth Generation mobile communication Network (5G) technology is also called New Radio (NR) technology, and The third Generation Partnership project (3 rd Generation Partnership project,3 gpp) defines three major application scenarios of 5G: enhanced Mobile broadband (eMBB) service, high-reliability Low-Latency Communication (URLLC) service, and large-scale Internet of things (mMTC) service. The eMBB service emphasizes providing a communication service with large bandwidth and high speed for a user, and has low requirements on time delay and reliability; URLLC business pays attention to providing high-reliability and low-delay communication service for users, and has higher requirements on the delay and reliability of the business; mMTC focuses on providing Internet of things communication services for a large number of users, and has high requirements for energy conservation of the users. In general, if there is an uplink Service to be sent by a User Equipment (UE), the UE needs to obtain an uplink grant through a Service Request (SR) procedure or a Random Access (RA) procedure, and then the UE can send corresponding Service data on the granted resource.
In order to reduce the delay of the URLLC service, the base station may configure a scheduling free (grant free) resource for the UE, so that the UE may send the URLLC service on the grant free resource without obtaining the grant of the base station.
However, if the grant free resource is used only for transmitting URLLC traffic, this part of resource utilization will be low, but if the grant free resource is used for transmitting other types of traffic including, for example, eMBB, it may conflict with other types of traffic transmitted by other UEs when URLLC traffic needs to be transmitted, so that there is no method in the related art for improving utilization of scheduling-free resources and ensuring transmission timeliness of URLLC traffic when URLLC traffic needs to be transmitted.
Disclosure of Invention
In order to solve the foregoing technical problem, embodiments of the present invention provide an information indicating method, an information indicating apparatus, and a computer-readable storage medium, which can improve the utilization rate of scheduling-free resources on the premise of ensuring the transmission timeliness of the URLLC service.
In order to achieve the purpose of the embodiments of the present invention, an embodiment of the present invention provides an information indicating method, including:
the UE generates service indication information, wherein the service indication information is used for indicating the transmission condition of the first service on the second transmission resource; the second transmission resource is a scheduling-free resource configured in a first transmission resource, the first transmission resource is a time-frequency resource configured by the base station, and a second service is transmitted on the first transmission resource;
and the UE sends the service indication information to the base station.
An embodiment of the present invention further provides a UE, including:
the processing module is used for generating service indication information, wherein the service indication information is used for indicating the transmission condition of the first service on the second transmission resource; the second transmission resource is a scheduling-free resource in a first transmission resource, the first transmission resource is a time-frequency resource configured by the base station, and a second service is transmitted on the first transmission resource;
and the sending module is used for sending the service indication information to the base station.
An embodiment of the present invention further provides a hash collision processing apparatus, including: a processor and a memory, wherein the memory has stored therein the following instructions executable by the processor:
generating service indication information, wherein the service indication information is used for indicating the transmission condition of the first service on the second transmission resource; the second transmission resource is a scheduling-free resource in a first transmission resource, the first transmission resource is a time-frequency resource configured by the base station, and a second service is transmitted on the first transmission resource;
and sending the service indication information to the base station.
An embodiment of the present invention further provides a computer-readable storage medium, where the storage medium stores computer-executable instructions, and the computer-executable instructions are configured to perform the following steps:
generating service indication information, wherein the service indication information is used for indicating the transmission condition of the first service on the second transmission resource; the second transmission resource is a scheduling-free resource in a first transmission resource, the first transmission resource is a time-frequency resource, and a second service is transmitted on the first transmission resource;
and sending the service indication information to the base station.
The UE sends the service indication information for indicating the transmission condition of the first service on the second transmission resource to the base station, so that the base station can know the transmission condition of the first service on the second transmission resource, the first transmission resource (including the second transmission resource) is fully utilized to transmit the second service under the condition of not transmitting the first service, and the timeliness of the transmission of the first service on the second transmission resource is ensured under the condition of transmitting the first service. Therefore, when the first service is the URLLC service and the second service is other types of services, the utilization rate of the scheduling-free resource is improved, and meanwhile, when the URLLC service needs to be transmitted, the transmission timeliness of the URLLC service is guaranteed, that is, the utilization rate of the scheduling-free resource is improved on the premise of guaranteeing the transmission timeliness of the URLLC service.
Additional features and advantages of embodiments of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of the invention. The objectives and other advantages of the embodiments of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the examples of the application do not constitute a limitation of the embodiments of the invention.
Fig. 1 is a schematic diagram illustrating different types of traffic conflicts according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating an information indication method according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a first transmission resource and a second transmission resource according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of an information indication according to an embodiment of the present invention;
FIG. 5 is a schematic diagram illustrating another information indication according to an embodiment of the present invention;
FIG. 6 is a schematic diagram illustrating an embodiment of an information indicator;
FIG. 7 is a schematic diagram illustrating another example of information indication according to the present invention;
FIG. 8 is a schematic diagram illustrating an embodiment of an information indicator;
FIG. 9 is a schematic diagram illustrating an embodiment of an information indicator;
fig. 10 is a schematic structural diagram of a UE according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The steps illustrated in the flow charts of the figures may be performed in a computer system such as a set of computer-executable instructions. Also, while a logical order is shown in the flow diagrams, in some cases, the steps shown or described may be performed in an order different than here.
Because the traffic of the UE is bursty, the base station cannot predict when the current UE will send the URLLC service on the grant free resource, so the grant free resource is often used by other UEs to send other types of services including, for example, eMBB, which results in a conflict with other types of services sent by other UEs when the current UE needs to send the URLLC service, (the priority of the URLLC service is higher, and when the URLLC service exists, it is necessary to preferentially ensure the transmission of the URLLC service, but it is not known in advance that the grant free resource is to be used to transmit the URLLC service, and the grant free resource is used to transmit other types of services, which results in a conflict). To avoid conflict between the URLLC service of the current UE and the eMBB services of other UEs, the simplest method is to not let the base station schedule other services, e.g., eMBB, on the grant free resource. However, this also has a problem that if the UE has fewer occasions to transmit the URLLC service on the grant free resource, the utilization rate of the grant free resource is low. Therefore, a method which can improve the utilization rate of scheduling-free resources and can ensure the transmission timeliness of the URLLC service when the URLLC service needs to be transmitted is lacked in the related art.
Fig. 1 is a schematic diagram illustrating different types of services causing collisions, as shown in fig. 1, UE1 sends URLLC services on a scheduling-free resource, and a base station does not know before that UE1 will send URLLC services on the scheduling-free resource, so that part or all of the uplink scheduling-free resource has been allocated to UE2 for transmitting its eMBB service, which results in the URLLC service of UE1 colliding with the eMBB service of UE 2.
To this end, an embodiment of the present invention provides an information indication method, as shown in fig. 2, the method including:
The service indication information is used for indicating the transmission condition of the first service on the second transmission resource, the second transmission resource is a scheduling-free resource in the first transmission resource, the first transmission resource is a time-frequency resource, and the second service is transmitted on the first transmission resource.
It should be noted that, since a part of the first transmission resource is the second transmission resource, the first transmission resource includes the second transmission resource.
In one embodiment, the first transmission resource is a time-frequency resource in a certain time and frequency domain, for example: the first transmission resource is a time-frequency resource corresponding to a BandWidth of a whole active Part (BWP) with a time domain being a time slot and a frequency domain being a BandWidth of the whole active Part.
In an embodiment, fig. 3 is a schematic diagram of a first transmission resource and a second transmission resource provided in an embodiment of the present invention, and as shown in fig. 3, all resources used for transmitting a first service belong to the second transmission resource, and all resources used for transmitting a second service belong to the first transmission resource, but since the second transmission resource is a part of resources in the first transmission resource, there may be a part or all of resources used for transmitting the second service belong to the second transmission resource.
In one embodiment, the base station receives the traffic indication information sent by the UE, and may adjust the scheduling policy to avoid the occurrence of traffic collision. For example, the base station may avoid scheduling the second service on the second service resource where the first service is scheduled, or the base station may perform special processing for the overlapping area, thereby ensuring efficient and reliable transmission of the first service. Wherein the special processing comprises: the first service and the second service are configured to be distinguished by adopting code division multiple access and power domain non-orthogonal multiple access.
It should be noted that, because the scheduling-free transmission resource configurations of different UEs are different, after receiving the service indication information sent by the UE, the base station needs to know the UE corresponding to the service indication information, so that it can be ensured that the base station and the UE understand the service indication information consistently. The UE may inform the base station of the UE identity in a direct or indirect manner. The straightforward approaches include: the UE carries its own Identity information, such as Radio Network Temporary Identity (RNTI), identity (ID) information, etc., in the service indication information. Indirect ways include: the UE bears the service indication information on the resource allocated to the UE by the base station, and the base station can judge the identity of the UE according to the time-frequency resource position of the service indication information. For example, the service indication information is carried in an uplink Scheduling Request (SR) resource, which is originally reserved for the UE, so that the base station can determine the identity of the UE according to the time-frequency resource location of the service indication information.
In the information indication method provided in the embodiment of the present invention, since the UE sends the service indication information for indicating the transmission condition of the first service on the second transmission resource to the base station, the base station can know the transmission condition of the first service on the second transmission resource, so that the first transmission resource (including the second transmission resource) is fully utilized to transmit the second service without transmitting the first service, and the timeliness of the transmission of the first service on the second transmission resource is ensured when the first service needs to be transmitted.
In an embodiment, when the first service is a URLLC service and the second service is another type of service, the UE sends the service indication information for indicating the transmission condition of the URLLC service on the second transmission resource to the base station, so that the base station can know the transmission condition of the URLLC service on the second transmission resource, thereby making full use of the other types of services of the first transmission resource (including the second transmission resource) without transmitting the URLLC service, ensuring the timeliness of the transmission of the URLLC service on the second transmission resource when the URLLC service needs to be transmitted, and improving the utilization rate of the scheduling-free resource on the premise of ensuring the transmission timeliness of the URLLC service.
Optionally, the first service has a higher service priority than the second service.
It should be noted that the service priority may be a priority of a service type or a priority of service content, which is not limited in this embodiment of the present invention. When the service priority is a priority of a service type, the service priority of the first service is higher than the service priority of the second service, which means that: the service type priority of the first service is higher than that of the second service; when the service priority is the priority of the service content, the following means: the service type of the first service is the same as that of the second service, but the service content priority of the first service is higher than that of the second service.
Optionally, before the UE generates the traffic indication information, the method further includes:
and the UE receives the configuration information of the first transmission resource and the configuration information of the second transmission resource sent by the base station.
In one embodiment, the configuration information of the second transmission Resource may be sent by the base station through Radio Resource Control (RRC) signaling.
Optionally, the configuration information of the second transmission resource includes:
the number of Transmission Occasions (TO) included in the Transmission cycle and the Transmission cycle of the scheduling-free resource.
In one embodiment, assuming that M TOs are included in one transmission period, the data sent by the UE on the M TOs is identical, i.e. the traffic data of the UE is repeatedly transmitted M times in one scheduling-free transmission period. If some special conditions are met, such as frame structure collision, etc., the UE may repeat transmission less than M times when actually transmitting the traffic data.
Optionally, the service indication information includes: and indicating information of the unit service corresponding to a plurality of indicating units for pointing to the second transmission resource, wherein the indicating information of the unit service corresponding to the indicating units indicates whether the first service is transmitted on the second transmission resource pointed to by the indicating units.
The unit traffic indication information is a subunit constituting the traffic indication information.
It should be noted that the unit service indication information may be represented in the form of a unit bit, where the unit bit may be a single bit, and when the unit service indication information is represented in the form of a single bit, each bit indicates whether the first service is transmitted on the second transmission resource pointed by the indicating unit, and the single bits corresponding to the plurality of indicating units form a bit field.
Optionally, the indication unit is a transmission cycle or a transmission opportunity.
When the indication units are transmission opportunities, the number of the indication units is an integral multiple of the number of the transmission opportunities included in the transmission cycle.
In an embodiment, when the indication unit is a transmission period of the scheduling-free resource, assuming that the service indication information is represented as a bit field, each bit indicates whether TO transmit the first service on the second transmission resource corresponding TO the transmission period, as shown in fig. 4, the number of TOs included in the transmission period is 4, the UE has 4 TOs in one transmission period, and data sent by the UE on the 4 TOs are identical. If the bit is "1" to indicate that the UE transmits the first service on the second transmission resource corresponding to the transmission period, the bit is "0" to indicate that the UE does not transmit the first service on the second transmission resource corresponding to the transmission period, and the higher order of the service indication information corresponds to the earlier transmission period, assuming that the service indication information bit field in fig. 4 can be represented as "10", the UE is indicated to transmit the first service on the second transmission resource corresponding to the first transmission period, and the first service is not transmitted on the second transmission resource corresponding to the second transmission period.
In an embodiment, when the indication unit is a TO, it is assumed that the service indication information is represented as a bit field, and each bit indicates whether the first service is transmitted on the second transmission resource corresponding TO the TO, as shown in fig. 5, if the number of TOs included in a transmission cycle is 4, the UE has 4 TOs in one transmission cycle, and data sent by the UE on the 4 TOs are identical. If the bit is "1" TO indicate that the UE transmits the first service on the second transmission resource corresponding TO the TO, the bit is "0" TO indicate that the UE does not transmit the first service on the second transmission resource corresponding TO the TO, and the higher order of the service indication information corresponds TO the earlier TO, assuming that the service indication information in fig. 5 is "1110", the UE is instructed TO transmit the first service on the second transmission resource corresponding TO the first three TOs of the first transmission cycle, and the first service is not transmitted on the second transmission resource corresponding TO the last TO of the first transmission cycle.
It should be noted that the UE and the base station need to keep consistent understanding of the indication unit of the traffic indication information. Therefore, the interpretation of the service indication information by the UE and the base station is consistent.
Optionally, the plurality of indication units comprises: and a plurality of indication units pointing to second transmission resources with the same frequency domain and different time domains.
In one embodiment, when the plurality of indication units comprises: when pointing TO multiple indication units of a second transmission resource with the same frequency domain and different time domains, the service indication information of the UE indicates whether TO transmit the first service on the second transmission resource pointed by the indication unit (scheduling-free resource transmission period or TO) with the same frequency domain and different time domains. As shown in fig. 6, the second transmission resource marked as "n" and the second transmission resource marked as "n +2" are located in the same frequency domain, the UE will transmit the first service on the second transmission resource marked as "n", and if the bit "1" indicates that the first service type is transmitted on the second transmission resource, the bit "0" indicates that the first service is not transmitted on the second transmission resource, and the high order of the service indication information indicates an earlier-occurring indication unit, the service indication information of the UE is represented as "10".
Optionally, the plurality of indication units comprise: and a plurality of indication units pointing to second transmission resources with the same time domain and different frequency domains.
In one embodiment, when the plurality of indication units comprises: when pointing TO multiple indication units of a second transmission resource with the same time domain and different frequency domains, the service indication information of the UE indicates whether TO transmit the first service on the second transmission resource pointed by the indication units (scheduling-free resource transmission periods or TOs) with the same time domain and different frequency domains. As shown in fig. 7, the second transmission resource marked as "n" and the second transmission resource marked as "n +1" are located in the same-phase same-time domain, the UE will transmit the first service on the second transmission resource marked as "n +1", and if the bit is "1" to indicate that the first service is transmitted on the second transmission resource, the bit is "0" to indicate that the first service is not transmitted on the second transmission resource, and the higher order of the service indication information indicates an indication unit with a higher frequency point, the service indication information of the UE is indicated as "01".
Optionally, the plurality of indication units comprise: a plurality of indication units pointing to second transmission resources of a plurality of frequency domains and a plurality of time domains.
In one embodiment, when the plurality of indication units comprises: and the service indication information of the UE indicates whether the first service is transmitted on the second transmission resource pointed by the indication units (the TO or the transmission period of the scheduling-free resource) of the plurality of frequency domains and the plurality of time domains. As shown in fig. 8, the traffic indication information of the UE indicates whether the first traffic is transmitted on the second transmission resource pointed to by the indication unit of 2 frequency domains and 2 time domains, the second transmission resource identified as "n" and the second transmission resource identified as "n +2" are located in the same frequency domain, the second transmission resource identified as "n +1" and the second transmission resource identified as "n +3" are located in the same frequency domain, the second transmission resource identified as "n" and the second transmission resource identified as "n +1" are located in the same phase and same time domain, the second transmission resource identified as "n +2" and the second transmission resource identified as "n +3" are located in the same phase and same time domain, if the first traffic is transmitted on the second transmission resource with bit "1", the first traffic is not transmitted on the second transmission resource with bit "0", the high bit to low bit mapping rule of the traffic indication information may be prioritized in the frequency domain and in one frequency domain, or the high bit to low bit mapping rule of the traffic indication information is prioritized, and the second transmission resource identified as "n +3", and the high bit information is prioritized mapping rule of the time domain and the second transmission resource indicated as "n +3", respectively, and the high bit information is prioritized and the high bit mapping rule of the time domain and the second transmission resource indicated as n + 3.
Optionally, the service indication information includes: the number of times the first service is repeatedly transmitted.
Before the UE generates the traffic indication information, the method further includes:
and when the first service is determined to be transmitted on the second transmission resource, the UE acquires the uplink channel quality.
And the UE determines the times of repeated transmission of the first service according to the quality of the uplink channel and the number of transmission opportunities included in the transmission period.
In one embodiment, the number M of transmission occasions included in the transmission period is configured by the base station, but the UE may determine the repeated transmission according to the actual situation based on M, so the number of repeated transmission in the actual transmission may be greater than or less than M. For example, the UE finds that the current channel condition is better, and the UE can also resolve the pair without repeatedly sending the base station M times, so that the number of times of repeated transmission of the actual transmission of the UE may be less than M; if the UE finds that the current channel condition is poor, the UE needs to repeat the base station more times to correctly solve the pair, the actual number of repetitions of the transmission by the UE may be greater than M, but the actual number of repetitions of the transmission should have an upper limit, which may limit the maximum number of repetitions of the actual transmission to 2 times of the number of repetitions of the RRC configuration. Assuming that the RRC configures the UE with the number of repeated transmissions of 4, the UE can repeatedly transmit the actual transmission a maximum of 8 times, if the number of actual repeated transmissions of the UE is indicated by 3 bits, and the number of repeated transmissions 1 to 8 is represented by bit-threshold values of '000' to '111'. If the channel condition of the UE is better, and the UE only repeats transmission 3 times during actual transmission, the service indication information of the UE is represented as "010"; assuming that the UE channel condition is poor and the UE actually transmits the data repeatedly 8 times, the traffic indication information of the UE is denoted as "111".
Optionally, the UE acquires the uplink channel quality, including:
and the UE acquires the feedback times of the negative acknowledgement information after the first service transmission for the previous N times.
The UE determines the number of times of repeated transmission of the first service according to the quality of the uplink channel and the number of transmission occasions included in the transmission period, and the method comprises the following steps:
and if the feedback times of the negative confirmation information is greater than the product of the N and the preset proportional value, the UE determines that the times of the repeated transmission of the first service is greater than the number of transmission opportunities included in the transmission period.
And if the feedback times of the negative confirmation information is not more than the product of the N and the preset proportional value, the UE determines that the times of the repeated transmission of the first service is not more than the number of transmission opportunities included in the transmission period.
Note that Negative Acknowledgement (NACK) information includes explicit and implicit information.
In one embodiment, assuming that the RRC signaling configuration has 2 repeated transmissions after 2 NACK transmissions (transmission error rate > 50%) of the first 4 first traffic transmissions, the UE may double the number of repeated transmissions, i.e. repeat the transmission 4 times.
Optionally, the obtaining, by the UE, the uplink channel quality includes:
if the current system is a Time Division Duplex (TDD) system, the UE obtains the uplink channel quality according to the downlink channel quality.
It should be noted that, in the TDD system, due to the reciprocity between the uplink channel and the downlink channel, the UE can determine the quality of the uplink channel according to the quality of the downlink channel.
Optionally, the traffic indication information is carried on the second transmission resource.
It should be noted that the service indication information may be carried on the second transmission resource, that is, on the grant free resource. When the UE transmits the first service on the second transmission resource, the UE carries the first service on a Physical Uplink Shared Channel (PUSCH) for transmission. In order to ensure that the base station can correctly demodulate the first service type data on the PUSCH, the UE may place a Demodulation Reference Signal (DMRS) on the second transmission resource for channel estimation.
Optionally, the service indication information is carried on the second transmission resource, and includes:
the service indication information is carried on the DMRS of the PUSCH, or carried on the PUSCH in a puncturing manner, or multiplexed on the PUSCH to implement carrying on the second transmission resource.
In one embodiment, if the traffic indication information is carried on the DMRS of the PUSCH, the UE may carry the traffic indication information on the DMRS by different Cyclic Shift (CS) manners, and the base station obtains the traffic indication information by blind detection. If the UE carries the N bits of service indication information on the DMRS, the base station needs to obtain the service indication information through 2^N times of blind detection at most.
In one embodiment, if the traffic indication information is carried on the PUSCH in a punctured manner, the system uses a part of the resource reservation originally used for transmitting the PUSCH for transmitting the traffic indication information. The base station and the UE need to have consistent knowledge of the location of the reserved resources, so that the base station can extract the traffic indication information when receiving the PUSCH. As shown in fig. 9, the UE occupies a part of PUSCH transmission resources for transmitting the traffic indication information, and the UE needs to avoid the resources for transmitting the traffic indication information when mapping the PUSCH transmission resources.
In one embodiment, if the traffic indication information is multiplexed on the PUSCH, the resource for the UE to transmit the traffic indication information overlaps with the transmission resource of the PUSCH, and is distinguished by non-orthogonal multiple access, code division multiple access, and the like.
Optionally, the service indication Information is carried on a reporting resource of periodic Channel State Information (CSI) or aperiodic CSI.
In one embodiment, in order to know the downlink Channel State, the base station configures a Channel State Information Reference Signal (CSI-RS) on a time-frequency resource, and the UE performs Channel estimation by using the CSI-RS and reports CSI Information on a CSI reporting resource. The CSI-RS is divided into a periodic CSI-RS and an aperiodic CSI-RS, correspondingly, the base station configures periodic and aperiodic CSI reporting resources for the UE, and the service indication information can be carried on the periodic CSI reporting resources or the aperiodic CSI reporting resources.
Optionally, the service indication information is carried on the SR resource.
In one embodiment, the base station does not know when the UE will have a service request because the service is bursty. Therefore, the base station reserves a part of resources for the UE to transmit the SR, the base station allocates uplink transmission resources for the UE after receiving the SR information, and the service indication information can be borne on the SR resources.
Optionally, the traffic indication information is carried on an independently configured periodic PUCCH transmission resource.
In one embodiment, similar to the base station reserving the SR transmission resource for the UE, the base station may separately configure a periodic PUCCH transmission resource for the traffic indication information, and the UE carries the traffic indication information on the periodic PUCCH transmission resource.
Optionally, the service indication information is carried on an independently configured aperiodic service indication information transmission resource; the service indication information transmission resource is pre-configured by the base station.
In one embodiment, the base station may independently configure aperiodic traffic indication information transmission resources for the UE. The base station informs the UE of the time-frequency resource position for sending the service indication information through the physical layer signaling, and the UE forms the service indication information according to the information such as the current service state and the like and bears the service indication information on the indicated position.
The embodiment of the invention also provides an information indication method, which comprises the following steps:
step 201, the base station receives service indication information sent by the UE.
The service indication information is used for indicating the transmission condition of the first service on the second transmission resource; the second transmission resource is a scheduling-free resource in the first transmission resource, the first transmission resource is a time-frequency resource, and the second service is transmitted on the first transmission resource.
Step 202, the base station adjusts the resource scheduling policy according to the service indication information.
In one embodiment, the base station may avoid scheduling the second service on the second service resource where the first service is scheduled, or the base station may perform special processing for the overlapping area, thereby ensuring efficient and reliable transmission of the first service. Wherein the special processing comprises: the first service and the second service are configured to be distinguished by adopting code division multiple access and power domain non-orthogonal multiple access.
Optionally, before the base station receives the service indication information sent by the UE, the method further includes:
step 203, the base station configures a segment of time-frequency resources as a first transmission resource, and configures a part of scheduling-free resources in the first transmission resource as a second transmission resource.
Step 204, the base station sends the configuration information of the first transmission resource and the configuration information of the second transmission resource to the UE.
Optionally, the configuration information of the second transmission resource includes:
the transmission period of the scheduling-free resource and the number of transmission opportunities included in the transmission period.
Optionally, the service indication information includes: and indicating information of the unit service corresponding to a plurality of indicating units for pointing to the second transmission resource, wherein the indicating information of the unit service corresponding to the indicating units indicates whether the first service is transmitted on the second transmission resource pointed to by the indicating units.
In one embodiment, the base station may avoid scheduling the second service on the second service resource pointed to by the indication unit to which the first service is scheduled according to the service indication information, and schedule the second service on the second service resource pointed to by the indication unit to which the first service is not scheduled.
Optionally, the service indication information includes: the number of times the first service is repeatedly transmitted.
In an embodiment, the base station may avoid scheduling the second service on the second transmission resources corresponding to the first K transmission occasions of one transmission cycle according to the service indication information, and schedule the second service on the transmission resources corresponding to the remaining transmission occasions, where K is equal to the number of times that the first service is repeatedly transmitted.
The embodiment of the invention also provides an information indication method, which comprises the following steps:
step 301, the base station configures a time-frequency resource as a first transmission resource, and configures a part of scheduling-free resources as a second transmission resource in the first transmission resource.
Step 302, the base station sends the configuration information of the first transmission resource and the configuration information of the second transmission resource to the UE.
Step 303, the UE receives the configuration information of the first transmission resource and the configuration information of the second transmission resource sent by the base station.
Step 304, the UE generates traffic indication information.
The service indication information is used for indicating the transmission condition of the first service on the second transmission resource; the second transmission resource is a scheduling-free resource in the first transmission resource, the first transmission resource is a time-frequency resource, and the second service is transmitted on the first transmission resource.
Step 305, the UE sends the service indication information to the base station.
Step 306, the base station receives the service indication information sent by the UE.
And 307, the base station adjusts a resource scheduling strategy according to the service indication information.
An embodiment of the present invention provides a UE, as shown in fig. 10, where the UE 4 includes:
a processing module 41, configured to generate service indication information, where the service indication information is used to indicate a transmission condition of a first service on a second transmission resource; the second transmission resource is a scheduling-free resource in the first transmission resource, the first transmission resource is a time-frequency resource, and the second service is transmitted on the first transmission resource.
And a sending module 42, configured to send the service indication information to the base station.
Optionally, the first service has a higher service priority than the second service.
Optionally, the method further comprises: the receiving module 42 is configured to receive configuration information of the first transmission resource and configuration information of the second transmission resource sent by the base station.
Optionally, the configuration information of the second transmission resource includes:
the transmission period of the scheduling-free resource and the number of transmission opportunities included in the transmission period.
Optionally, the service indication information includes: and unit traffic indication information corresponding to a plurality of indication units for pointing to the second transmission resource, wherein the unit traffic indication information corresponding to the indication units indicates whether the first traffic is transmitted on the second transmission resource pointed to by the indication units.
Optionally, the indication unit is a transmission cycle or a transmission opportunity;
when the indication units are transmission opportunities, the number of the indication units is integral multiple of the number of the transmission opportunities included in the transmission cycle.
Optionally, the plurality of indication units comprise: and a plurality of indication units pointing to second transmission resources with the same frequency domain and different time domains.
Optionally, the plurality of indication units comprise: and the indication units point to second transmission resources with the same time domain and different frequency domains.
Optionally, the plurality of indication units comprises: a plurality of indication units pointing to a second transmission resource of a plurality of frequency domains and a plurality of time domains.
Optionally, the service indication information includes: the number of times the first traffic is repeatedly transmitted. The processing module 41 is further configured to:
and when the first service is determined to be transmitted on the second transmission resource, acquiring the uplink channel quality.
And determining the times of repeated transmission of the first service according to the quality of the uplink channel and the number of transmission opportunities included in the transmission period.
Optionally, the processing module 41 is further specifically configured to:
acquiring the feedback times of the negative acknowledgement information after the first service transmission for the previous N times; wherein N is a positive integer.
And if the feedback times of the negative confirmation information are larger than the product of the N and the preset proportional value, determining that the times of the repeated transmission of the first service are larger than the number of transmission opportunities included in the transmission period.
And if the feedback times of the negative confirmation information is not more than the product of the N and the preset proportional value, determining that the times of the repeated transmission of the first service is not more than the number of transmission opportunities included in the transmission period.
Optionally, the processing module 41 is specifically configured to, if the current system is a TDD system, obtain the uplink channel quality according to the downlink channel quality.
Optionally, the traffic indication information is carried on the second transmission resource.
Optionally, the traffic indication information is carried on the PUSCH through the DMRS carried on the PUSCH, or carried on the PUSCH in a puncturing manner, or multiplexed on the PUSCH to implement carrying on the second transmission resource.
Optionally, the service indication information is carried on a reporting resource of the periodic CSI or the aperiodic CSI.
Optionally, the service indication information is carried on the SR resource.
Optionally, the traffic indication information is carried on an independently configured periodic PUCCH transmission resource.
Optionally, the traffic indication information is carried on an independently configured aperiodic traffic indication information transmission resource.
In the UE provided in the embodiment of the present invention, since the UE sends the service indication information for indicating the transmission condition of the first service on the second transmission resource to the base station, the base station can know the transmission condition of the first service on the second transmission resource, so that the first transmission resource (including the second transmission resource) is fully utilized to transmit the second service without transmitting the first service, and the timeliness of the transmission of the first service on the second transmission resource is ensured when the first service needs to be transmitted. Therefore, when the first service is the URLLC service and the second service is other types of services, the utilization rate of scheduling-free resources is improved, and meanwhile, the transmission timeliness of the URLLC service is guaranteed when the URLLC service needs to be transmitted.
In an embodiment, when the first service is a URLLC service and the second service is another type of service, the UE sends the service indication information for indicating the transmission condition of the URLLC service on the second transmission resource to the base station, so that the base station can know the transmission condition of the URLLC service on the second transmission resource, thereby making full use of the other types of services of the first transmission resource (including the second transmission resource) without transmitting the URLLC service, ensuring the timeliness of the transmission of the URLLC service on the second transmission resource when the URLLC service needs to be transmitted, and improving the utilization rate of the scheduling-free resource on the premise of ensuring the transmission timeliness of the URLLC service.
In practical applications, the Processing module 41, the sending module 42 and the receiving module 43 may be implemented by a Central Processing Unit (CPU), a microprocessor Unit (MPU), a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), or the like located in the UE.
The embodiment of the invention also provides an information indicating device, which comprises a memory and a processor, wherein the memory stores the following instructions which can be executed by the processor:
generating service indication information, wherein the service indication information is used for indicating the service indication information of the transmission condition of the first service on the second transmission resource; the second transmission resource is a scheduling-free resource in the first transmission resource, the first transmission resource is a time-frequency resource, and the second service is transmitted on the first transmission resource.
And sending the service indication information to the base station.
Optionally, the first service has a higher service priority than the second service.
Optionally, the memory further stores the following instructions executable by the processor:
and receiving the configuration information of the first transmission resource and the configuration information of the second transmission resource sent by the base station.
Optionally, the configuration information of the second transmission resource includes:
the transmission period of the scheduling-free resource and the number of transmission opportunities included in the transmission period.
Optionally, the service indication information includes: and indicating information of the unit service corresponding to a plurality of indicating units for pointing to the second transmission resource, wherein the indicating information of the unit service corresponding to the indicating units indicates whether the first service is transmitted on the second transmission resource pointed to by the indicating units.
Optionally, the indication unit is a transmission cycle or a transmission opportunity.
When the indication units are transmission opportunities, the number of the indication units is an integral multiple of the number of the transmission opportunities included in the transmission cycle.
Optionally, the plurality of indication units comprise: and the indication units point to second transmission resources which are the same in frequency domain and different in time domain.
Optionally, the plurality of indication units comprise: and the indication units point to second transmission resources with the same time domain and different frequency domains.
Optionally, the plurality of indication units comprise: a plurality of indication units pointing to a second transmission resource of a plurality of frequency domains and a plurality of time domains.
Optionally, the service indication information includes: the number of times the first traffic is repeatedly transmitted.
The memory also has stored therein the following instructions executable by the processor:
and when the first service is determined to be transmitted on the second transmission resource, acquiring the uplink channel quality.
And determining the times of repeated transmission of the first service according to the quality of the uplink channel and the number of transmission opportunities included in the transmission period.
Optionally, the memory further stores the following instructions executable by the processor:
acquiring the feedback times of the negative acknowledgement information after the first service is transmitted for the previous N times; wherein N is a positive integer.
And if the feedback times of the negative confirmation information is larger than the product of the N and the preset proportional value, determining that the times of the repeated transmission of the first service is larger than the number of transmission opportunities included in the transmission period.
And if the feedback times of the negative confirmation information is not more than the product of the N and the preset proportional value, determining that the times of the repeated transmission of the first service is not more than the number of transmission opportunities included in the transmission period.
Optionally, the memory further stores the following instructions executable by the processor:
and if the current system is a TDD system, obtaining the uplink channel quality according to the downlink channel quality.
Optionally, the traffic indication information is carried on the second transmission resource.
Optionally, the traffic indication information is carried on the DMRS of the PUSCH, or carried on the PUSCH in a puncturing manner, or multiplexed on the PUSCH to implement carrying on the second transmission resource.
Optionally, the service indication information is carried on a reporting resource of the periodic CSI or the aperiodic CSI.
Optionally, the service indication information is carried on the SR resource.
Optionally, the traffic indication information is carried on an independently configured periodic PUCCH transmission resource.
Optionally, the traffic indication information is carried on an independently configured aperiodic traffic indication information transmission resource.
An embodiment of the present invention further provides a computer-readable storage medium, where the storage medium stores computer-executable instructions, and the computer-executable instructions are configured to perform the following steps:
generating service indication information, wherein the service indication information is used for indicating the service indication information of the transmission condition of the first service on the second transmission resource; the second transmission resource is a scheduling-free resource in the first transmission resource, the first transmission resource is a time-frequency resource, and the second service is transmitted on the first transmission resource.
And sending the service indication information to the base station.
Optionally, the first service has a higher service priority than the second service.
Optionally, the computer executable instructions further perform the steps of:
and receiving the configuration information of the first transmission resource and the configuration information of the second transmission resource sent by the base station.
Optionally, the configuration information of the second transmission resource includes:
the transmission period of the scheduling-free resource and the number of transmission opportunities included in the transmission period.
Optionally, the service indication information includes: and indicating information of the unit service corresponding to a plurality of indicating units for pointing to the second transmission resource, wherein the indicating information of the unit service corresponding to the indicating units indicates whether the first service is transmitted on the second transmission resource pointed to by the indicating units.
Optionally, the indication unit is a transmission cycle or a transmission opportunity.
When the indication units are transmission opportunities, the number of the indication units is integral multiple of the number of the transmission opportunities included in the transmission cycle.
Optionally, the plurality of indication units comprise: and a plurality of indication units pointing to second transmission resources with the same frequency domain and different time domains.
Optionally, the plurality of indication units comprise: and a plurality of indication units pointing to second transmission resources with the same time domain and different frequency domains.
Optionally, the plurality of indication units comprise: a plurality of indication units pointing to second transmission resources of a plurality of frequency domains and a plurality of time domains.
Optionally, the service indication information includes: the number of times the first traffic is repeatedly transmitted. The computer-executable instructions further perform the steps of:
and acquiring the quality of an uplink channel.
And determining the times of repeated transmission of the first service according to the quality of the uplink channel and the number of transmission opportunities included in the transmission period.
Optionally, the computer executable instructions specifically perform the steps of:
acquiring the feedback times of the negative acknowledgement information after the first service transmission for the previous N times; wherein N is a positive integer.
And if the feedback times of the negative confirmation information is larger than the product of the N and the preset proportional value, determining that the times of the repeated transmission of the first service is larger than the number of transmission opportunities included in the transmission period.
And if the feedback times of the negative confirmation information is not more than the product of the N and the preset proportional value, determining that the times of the repeated transmission of the first service is not more than the number of transmission opportunities included in the transmission period.
Optionally, the computer executable instructions specifically perform the steps of:
and if the current system is a TDD system, obtaining the uplink channel quality according to the downlink channel quality.
Optionally, the traffic indication information is carried on the second transmission resource.
Optionally, the traffic indication information is carried on the DMRS of the PUSCH, or carried on the PUSCH in a puncturing manner, or multiplexed on the PUSCH to implement carrying on the second transmission resource.
Optionally, the service indication information is carried on a reporting resource of the periodic CSI or the aperiodic CSI.
Optionally, the service indication information is carried on the SR resource.
Optionally, the traffic indication information is carried on an independently configured periodic PUCCH transmission resource.
Optionally, the traffic indication information is carried on an independently configured aperiodic traffic indication information transmission resource.
Although the embodiments of the present invention have been described above, the descriptions are only used for understanding the embodiments of the present invention, and are not intended to limit the embodiments of the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the embodiments of the invention as defined by the appended claims.
Claims (16)
1. An information indication method, comprising:
generating service indication information by User Equipment (UE), wherein the service indication information is used for indicating the transmission condition of a first service on a second transmission resource; the second transmission resource is a scheduling-free resource in a first transmission resource, the first transmission resource is a time-frequency resource, and a second service is transmitted on the first transmission resource;
the UE sends the service indication information to a base station;
before the UE generates the service indication information, the method further includes:
the UE receives configuration information of a first transmission resource and configuration information of a second transmission resource sent by the base station;
wherein the configuration information of the second transmission resource comprises:
the method comprises the steps that a transmission period of scheduling-free resources and the number of transmission opportunities included in the transmission period are determined;
wherein the service indication information includes: the number of times of the first service repeated transmission;
before the UE generates the service indication information, the method further includes:
when the first service is determined to be transmitted on the second transmission resource, the UE acquires the quality of an uplink channel;
the UE determines the times of repeated transmission of the first service according to the quality of the uplink channel and the number of the transmission occasions included in the transmission period;
wherein, the UE acquiring the uplink channel quality includes:
the UE acquires the feedback times of negative acknowledgement information after the first service is transmitted for the previous N times; wherein N is a positive integer;
the UE determines the number of times of repeated transmission of the first service according to the quality of the uplink channel and the number of transmission occasions included in the transmission period, and the method comprises the following steps:
if the feedback times of the negative acknowledgement information is larger than the product of N and a preset proportional value, the UE determines that the times of the repeated transmission of the first service is larger than the number of transmission opportunities included in the transmission period;
and if the feedback times of the negative acknowledgement information are not more than the product of the N and a preset proportional value, the UE determines that the times of the repeated transmission of the first service are not more than the number of transmission opportunities included in the transmission period.
2. The information indication method of claim 1, wherein the first service has a higher service priority than the second service.
3. The information indication method of claim 1, wherein the traffic indication information comprises: and the unit service indication information corresponds to a plurality of indication units used for pointing to the second transmission resource, wherein the unit service indication information corresponding to the indication units indicates whether the first service is transmitted on the second transmission resource pointed by the indication units.
4. The information indication method according to claim 3, wherein the indication unit is a transmission cycle or a transmission opportunity;
when the indication units are transmission opportunities, the number of the indication units is an integral multiple of the number of the transmission opportunities included in the transmission cycle.
5. The information indication method according to claim 4, wherein the plurality of indication units include: and a plurality of indication units pointing to second transmission resources with the same frequency domain and different time domains.
6. The information indication method according to claim 4, wherein the plurality of indication units include: and a plurality of indication units pointing to second transmission resources with the same time domain and different frequency domains.
7. The information indication method according to claim 4, wherein the plurality of indication units include: a plurality of indication units pointing to second transmission resources of a plurality of frequency domains and a plurality of time domains.
8. The information indication method of claim 1, wherein the UE acquires uplink channel quality, and comprises:
and if the current system is a Time Division Duplex (TDD) system, the UE acquires the uplink channel quality according to the downlink channel quality.
9. The information indication method according to claim 1 or 3, wherein the traffic indication information is carried on the second transmission resource.
10. The information indication method of claim 9, wherein the traffic indication information is carried on the second transmission resource, and comprising:
the service indication information is carried on a demodulation reference signal (DMRS) of a Physical Uplink Shared Channel (PUSCH), or carried on the PUSCH in a punching mode, or multiplexed on the PUSCH to realize carrying on the second transmission resource.
11. The information indication method according to claim 1 or 3, wherein the service indication information is carried on a reporting resource of periodic Channel State Information (CSI) or aperiodic CSI.
12. The information indication method according to claim 1 or 3, wherein the traffic indication information is carried on an uplink scheduling request, SR, resource.
13. The information indication method according to claim 1 or 3, wherein the traffic indication information is carried on an independently configured periodic PUCCH transmission resource.
14. The information indication method according to claim 1 or 3, wherein the traffic indication information is carried on an independently configured aperiodic traffic indication information transmission resource; wherein, the service indication information transmission resource is pre-configured by the base station.
15. An information indicating device, comprising: a processor and a memory, wherein the memory has stored therein the following instructions executable by the processor:
generating service indication information, wherein the service indication information is used for indicating the transmission condition of the first service on the second transmission resource; the second transmission resource is a scheduling-free resource in a first transmission resource, the first transmission resource is a time-frequency resource, and a second service is transmitted on the first transmission resource;
sending the service indication information to a base station;
wherein the memory further has stored therein the following instructions executable by the processor:
receiving configuration information of a first transmission resource and configuration information of a second transmission resource sent by a base station;
wherein the configuration information of the second transmission resource includes:
the transmission period of the scheduling-free resource and the number of transmission opportunities included in the transmission period;
wherein, the service indication information includes: the number of times of repeated transmission of the first service;
the memory also has stored therein the following instructions executable by the processor:
when the first service is determined to be transmitted on the second transmission resource, acquiring the quality of an uplink channel;
determining the number of times of repeated transmission of the first service according to the quality of the uplink channel and the number of transmission opportunities included in the transmission period;
the memory further stores the following instructions that can be executed by the processor:
acquiring the feedback times of the negative acknowledgement information after the first service transmission for the previous N times; wherein N is a positive integer;
if the feedback times of the negative confirmation information is larger than the product of N and a preset proportional value, determining that the times of the repeated transmission of the first service is larger than the number of transmission opportunities included in a transmission period;
and if the feedback times of the negative confirmation information is not more than the product of the N and the preset proportional value, determining that the times of the repeated transmission of the first service is not more than the number of transmission opportunities included in the transmission period.
16. A computer-readable storage medium having stored thereon computer-executable instructions for performing the steps of:
generating service indication information, wherein the service indication information is used for indicating the transmission condition of the first service on the second transmission resource; the second transmission resource is a scheduling-free resource in a first transmission resource, the first transmission resource is a time-frequency resource, and a second service is transmitted on the first transmission resource;
sending the service indication information to a base station;
the computer-executable instructions further perform the steps of:
receiving configuration information of a first transmission resource and configuration information of a second transmission resource sent by a base station;
wherein the configuration information of the second transmission resource includes:
the transmission period of the scheduling-free resource and the number of transmission opportunities included in the transmission period;
wherein, the service indication information includes: the number of times of repeated transmission of the first service; the computer-executable instructions further perform the steps of:
acquiring the quality of an uplink channel;
determining the number of times of repeated transmission of the first service according to the quality of the uplink channel and the number of transmission opportunities included in the transmission period;
the computer-executable instructions specifically perform the steps of:
acquiring the feedback times of the negative acknowledgement information after the first service transmission for the previous N times; wherein N is a positive integer;
if the feedback times of the negative confirmation information is larger than the product of N and a preset proportional value, determining that the times of the repeated transmission of the first service is larger than the number of transmission opportunities included in a transmission period;
and if the feedback times of the negative confirmation information is not more than the product of the N and the preset proportional value, determining that the times of the repeated transmission of the first service is not more than the number of transmission opportunities included in the transmission period.
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| CN107223358A (en) * | 2017-04-27 | 2017-09-29 | 北京小米移动软件有限公司 | A kind of service integration transmission method, device and computer-readable recording medium |
| WO2018019085A1 (en) * | 2016-07-29 | 2018-02-01 | Huawei Technologies Co., Ltd. | Coexistence of grant-based and grant-free uplink transmissions in a channel |
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| US11071136B2 (en) * | 2016-08-25 | 2021-07-20 | Huawei Technologies Co., Ltd. | System and method for multiplexing traffic |
| US11252717B2 (en) * | 2016-09-02 | 2022-02-15 | Huawei Technologies Co., Ltd. | Co-existence of latency tolerant and low latency communications |
| CN108738135B (en) * | 2017-04-13 | 2019-12-24 | 华为技术有限公司 | Uplink information sending method, receiving method and device |
| CN108811112B (en) * | 2017-05-05 | 2020-01-21 | 华为技术有限公司 | Data transmission method, equipment and system |
| CN110035507B (en) * | 2018-01-12 | 2021-04-30 | 中国信息通信研究院 | Method and system for transmitting uplink information of mobile communication |
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| CN103782640A (en) * | 2011-08-18 | 2014-05-07 | 富士通株式会社 | Scheduling request enabled uplink transmission |
| WO2018019085A1 (en) * | 2016-07-29 | 2018-02-01 | Huawei Technologies Co., Ltd. | Coexistence of grant-based and grant-free uplink transmissions in a channel |
| CN107223358A (en) * | 2017-04-27 | 2017-09-29 | 北京小米移动软件有限公司 | A kind of service integration transmission method, device and computer-readable recording medium |
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