CN111107638B

CN111107638B - Resource allocation method, terminal equipment and network equipment

Info

Publication number: CN111107638B
Application number: CN201910345610.8A
Authority: CN
Inventors: 李�灿; 姜蕾; 潘学明; 沈晓冬
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2019-04-26
Filing date: 2019-04-26
Publication date: 2023-04-28
Anticipated expiration: 2039-04-26
Also published as: CN111107638A

Abstract

The invention discloses a resource allocation method, which is applied to terminal equipment, and comprises the following steps: receiving a plurality of configuration authorization configurations; and under the condition that Listen Before Talk (LBT) is successful in the first time slot, transmitting a first Physical Uplink Shared Channel (PUSCH) according to a first configuration authorization configuration in a plurality of configuration authorization configurations. According to the embodiment of the invention, the purpose of increasing the flexibility and efficiency of resource utilization is achieved by realizing consistent understanding of the configuration mode between the terminal equipment and the network equipment.

Description

Resource allocation method, terminal equipment and network equipment

Technical Field

The present invention relates to the field of communications, and in particular, to a resource allocation method, a terminal device, and a network device.

Background

Currently, before a New air interface (NR) mobile communication system (abbreviated as NR system) sends information on an unlicensed frequency band, a terminal device or a network device needs to perform channel idle estimation (Clear Channel Assess, CCA) or extended channel idle estimation (extended Clear Channel Assess, eCCA) to monitor a channel, i.e., perform Energy Detection (ED), if the detected Energy is lower than a certain threshold, the channel is determined to be empty, and when the channel is idle, transmission can be started, i.e., perform Listen-Before-Talk (LBT) monitoring avoidance mechanism. Because the unlicensed frequency band is shared by multiple technologies or multiple transmission points, the channel access mode based on competition causes uncertainty of the available time of the channel, the channel access opportunity is small, and the problems of low flexibility and efficiency of resource utilization are also caused.

Disclosure of Invention

One of the technical problems solved by the embodiment of the invention is that the inconsistent configuration mode is realized between the terminal equipment and the network equipment, so that the resource utilization is inflexible and the efficiency is low.

In a first aspect, an embodiment of the present invention provides a resource allocation method, applied to a terminal device, where the method includes:

receiving a plurality of configuration authorization configurations;

and under the condition that Listen Before Talk (LBT) is successful in the first time slot, transmitting a first Physical Uplink Shared Channel (PUSCH) according to a first configuration authorization configuration in the configuration authorization configurations.

In a second aspect, an embodiment of the present invention provides a resource allocation method, applied to a network device, where the method includes:

transmitting a plurality of configuration authorization configurations to the terminal device;

and determining a first configuration authorization configuration adopted by the terminal equipment for transmitting a first Physical Uplink Shared Channel (PUSCH) from the plurality of configuration authorization configurations through a blind detection reference signal, wherein the first PUSCH is transmitted after hearing before talk (LBT) is successful in a first slot.

In a third aspect, an embodiment of the present invention provides a terminal device, including:

a receiving module for receiving a plurality of configuration authorization configurations;

And the transmission module is used for transmitting the first Physical Uplink Shared Channel (PUSCH) according to a first configuration authorization configuration in the configuration authorization configurations under the condition that Listen Before Talk (LBT) is successful in the first time slot.

In a fourth aspect, an embodiment of the present invention provides a terminal device, including: a memory, a processor and a computer program stored on the memory and executable on the processor, which when executed by the processor performs the steps of the method according to the first aspect.

In a fifth aspect, embodiments of the present invention provide a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method according to the first aspect.

In a sixth aspect, an embodiment of the present invention provides a network device, including:

a sending module, configured to send a plurality of configuration authorization configurations to a terminal device;

and the determining module is used for determining a first configuration authorization configuration adopted by the terminal equipment for transmitting a first Physical Uplink Shared Channel (PUSCH) from the plurality of configuration authorization configurations through a blind detection reference signal, wherein the first PUSCH is transmitted after the Listen Before Talk (LBT) is successful in a first time slot.

In a seventh aspect, an embodiment of the present invention provides a network device, including: a memory, a processor and a computer program stored on the memory and executable on the processor, which when executed by the processor performs the steps of the method according to the second aspect.

In an eighth aspect, an embodiment of the present invention provides a computer readable storage medium, wherein the computer readable storage medium has stored thereon a computer program, which when executed by a processor, implements the steps of the method according to the second aspect.

In the embodiment of the invention, when information transmission is carried out in an unlicensed frequency band, the terminal equipment receives a plurality of configuration authorized configurations configured by the network equipment, and selects one configuration authorized configuration from the plurality of configuration authorized configurations to transmit the PUSCH under the condition that LBT is successful, namely the channel is contended, so as to complete the information transmission. Therefore, the purpose of increasing the flexibility and efficiency of resource utilization can be achieved by realizing consistent understanding of the configuration mode between the terminal equipment and the network equipment, namely, when the network equipment works in an unlicensed frequency band, information transmission is carried out on the basis of a plurality of configuration authorization configurations configured by the network equipment.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:

FIG. 1 is a flowchart of a first resource allocation method according to an embodiment of the present invention;

FIG. 2 is a flowchart of a second method for configuring resources according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a first plurality of configuration authorization configurations in an embodiment of the invention;

FIG. 4 is a schematic diagram of a second plurality of configuration authorization configurations in an embodiment of the invention;

FIG. 5 is a schematic diagram of a third plurality of configuration authorization configurations in an embodiment of the invention;

FIG. 6 is a schematic diagram of a fourth plurality of configuration authorization configurations in an embodiment of the invention;

fig. 7 is a schematic structural diagram of a terminal device in an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a network device according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a second terminal device in an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a second network device according to an embodiment of the present invention.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

For the LBT mechanism set forth in the background section, the types of LBTs currently explicitly available on unlicensed bands of the fifth Generation mobile communication technology (5G) communication system may include the following three types:

(1) LBT Cat 1: before sending the information, no CAA is done to send the information directly, this type needs to be usable in case the channel has been acquired and the interval of the transmission transitions is less than 16 mus;

(2) LBT Cat 2: before transmitting information, channel interception is performed for 25 mu s or 16 mu s, a specific signal acquisition channel can be used, and the maximum continuous transmission length should be less than a certain value, such as 1ms;

(3) LBT Cat 4: before information is sent, channel interception integrating random back-off is carried out, the setting of parameters of different priorities is different, and the maximum length which can be transmitted after the channel is obtained is also different.

In addition, in the current discussion of the standard time domain configuration of unlicensed bands in 5G communication systems, there are two options for time domain resources based on configuration grant (configured grant) transmission:

(1) Enhancement of periodic configuration based on the configurable grant of NR in the R15 version protocol.

(2) Enhancement of bitmap file (bitmap) configuration based on Automatic UpLink (AUL) in further enhanced authorization Assisted Access (Further enhancement Licensed-Assisted Access, feLAA).

In the related art, in order to enhance flexibility of time domain resource allocation and increase opportunities for channel access, the problems of small opportunities for channel access and inflexible resource allocation are solved, and a plurality of resources can be allocated in a period and in resource allocation with smaller granularity (mini-slot). The User Equipment (UE), also called a terminal device, may transmit at a corresponding resource block according to the LBT result at a position where transmission starts according to the configured time domain resource.

Further, in the standard discussion of enhanced Ultra-52-Reliable and Low Latency Communications (eURLLC), in order to increase the reliability of data transmission and reduce the delay, a configuration of multiple configurable grads may be supported by one BWP (Bandwidth Part) on one carrier, where a UE may select a certain configuration to send data according to the time of arrival of a service and the type of service.

In addition, it is also considered whether or not the transmission of data can be started after the resource block start position according to the result of LBT, and specifically, the following cases can be included:

(1) If the result of LBT can be used and the resource block is transmitted in the time domain based on slot, the UE needs to puncture (puncture) the data after the LBT is successful, and if the position where the LBT is successful is close to the position where slot ends, the data needs to be mostly punctured, which has a problem of lower actual transmission efficiency.

(2) If the result according to the LBT can be used and the resource block is transmitted based on the minislot-slot in the time domain, the UE also needs to transmit the data after the LBT is successful and increases the number of hybrid automatic repeat request (Hybrid automatic repeat request, HARQ) processes. Since each physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) carries uplink control information (Uplink Control Information, UCI), this situation has a problem of increasing the overhead of control signaling.

(3) If the result of LBT is not available and the resource block is transmitted based on time slot in time domain, the UE can only transmit data at the beginning position of each slot, if LBT fails in the current slot, LBT can only be done again in the next slot, and the situation has the problems of reducing the resource utilization rate and reducing the opportunity of channel access.

(4) This case increases the opportunity for channel access while increasing the number of HARQ processes if it is not possible according to the result of LBT and the resource block is transmitted based on minislot-slot in the time domain. And as each PUSCH carries UCI, the overhead of control signaling is increased.

Therefore, it is necessary to consider how to reduce the number of HARQ processes, reduce the overhead of control signaling, and increase the flexibility and efficiency of resource utilization on the premise of increasing the channel access opportunity.

The following describes in detail the technical solutions provided by the embodiments of the present invention with reference to the accompanying drawings.

Referring to fig. 1, an embodiment of the present invention provides a resource allocation method, which is applied to a terminal device. The method comprises the following steps:

step 101: a plurality of configuration authorization configurations is received.

Optionally, the plurality of configuration authorization configurations have different time granularity. That is, the network device may match a unique corresponding time granularity for each configuration grant configuration, respectively, where the time granularity includes, but is not limited to, 1 slot (slot), 2 symbols (symbol), 7 symbols (symbol), and 4 symbols (symbol).

Further optionally, the plurality of configuration authorization configurations have different indexes. That is, the network device may match the unique corresponding index for each configuration authorization configuration, respectively.

Further optionally, the plurality of configuration grant configured reference signal parameters are different. The network device may match unique corresponding reference signal parameters for each configuration authorization configuration, respectively, where the reference signal parameters include, but are not limited to, location, port, and scrambling code scrambling id.

Step 103: and under the condition that Listen Before Talk (LBT) is successful in the first time slot, transmitting a first Physical Uplink Shared Channel (PUSCH) according to a first configuration authorization configuration in a plurality of configuration authorization configurations.

Optionally, in the resource allocation method according to the embodiment of the present invention, in order to achieve the purpose of reducing the blind detection times of the network device, the terminal device may enable the network device to learn, in different manners, a second configuration authorization configuration of a plurality of configuration authorization configurations adopted by transmitting the second PUSCH after the network device has transmitted the first PUSCH.

Optionally, the second PUSCH is a first PUSCH transmitted by the terminal device after the first PUSCH; or the second PUSCH is a PUSCH transmitted in a second slot, where the second slot is the first slot after the first slot.

Optionally, in a specific embodiment of indicating the second configuration authorization configuration, the uplink control information UCI carried on the first PUSCH includes first indication information, where the first indication information is used to indicate the second configuration authorization configuration adopted by the terminal device to transmit the second PUSCH.

It can be understood that the second configuration grant configuration used for PUSCH (i.e., second PUSCH) of the next transmission is indicated by including, i.e., the first indication information, in UCI.

Optionally, in the resource allocation method according to the embodiment of the present invention, the foregoing first indication information for indicating the second configuration authorization configuration adopted by the terminal device to transmit the second PUSCH may be explicit indication of the second configuration authorization configuration in different manners, so as to implement diversity of configuration authorization configuration indication.

Optionally, in a specific embodiment of the first indication information, the first indication information is used to indicate whether the second configuration authorization configuration is the same as the first configuration authorization configuration.

It is understood that whether the second configuration authorization configuration is identical to the first configuration authorization configuration is indicated by the first indication information included in the UCI.

For example, if the configurable grant field (i.e., the first indication information) included in UCI is "0", the configurable grant configuration (configuration grant configuration) that may be used for PUSCH representing the next transmission is not changed, i.e., the second configuration grant configuration is the same as the first configuration grant configuration; if the configurable grant field included in UCI is "1", the configurable grant configuration that may be used on behalf of PUSCH for the next transmission may change, i.e., the second configuration grant configuration is different from the first configuration grant configuration.

Further, when the configured grant configuration used by the terminal device in the PUSCH of the next transmission is not changed, the network device may demodulate the data of the next PUSCH transmission according to the first configuration authorization configuration without blind detection; when the configured grant configuration used by the terminal device in the PUSCH transmitted next is changed, the network device may determine the second configuration grant configuration from the configuration grant configurations other than the first configuration grant configuration in the plurality of configuration grant configurations through the blind detection reference signal, that is, by reducing the range of blind detection, so that the network device saves the blind detection times.

Optionally, in another specific embodiment of the first indication information, the first indication information is used to indicate an index of the second configuration authorization configuration, where a number of bits of the first indication information is related to a total number of the plurality of configuration authorization configurations.

It can be understood that the index of the second configuration grant configuration is directly indicated by the first indication information included in the UCI, so that the network device determines the configuration grant configuration indicated by the index as the second configuration grant configuration, which is direct and explicit, so that the network device can demodulate the data transmitted by the next PUSCH according to the configuration indicated by the terminal device without blind detection. Wherein, by correlating the number of bits of the first indication information with the total number of the plurality of configuration authorization configurations, the number of bits can be fully utilized, avoiding waste.

For example, the index of the configured grant configuration used for PUSCH of the next transmission is indicated through the configured grant field (i.e., first indication information) included in UCI.

Optionally, in another specific embodiment of the indicating the second configuration authorization configuration, the resource configuration method of the embodiment of the present invention further includes:

and determining a second configuration authorization configuration adopted for transmitting the second PUSCH according to the target time information, wherein the target time information comprises the preparation time length of the PUSCH.

The preparation time of the PUSCH may be determined according to the capability of the terminal device to prepare the PUSCH; specifically, the terminal device may report the capability of preparing the PUSCH, and the network device may determine the preparation duration of the PUSCH according to the capability of preparing the PUSCH by the terminal device.

Optionally, in the resource allocation method according to the embodiment of the present invention, the above-mentioned target time information for determining, by the network device, the second configuration grant configuration adopted by the terminal device for transmitting the second PUSCH may be used to implement, by different content combinations, an undefined indication of the second configuration grant configuration, so as to implement diversity of configuration grant configuration indications.

Optionally, in a specific embodiment of the target time information, the target time information further includes an interval duration between a transmission start time of the first PUSCH and an end time of the first slot;

The determining, according to the target time information, the second configuration authorization configuration adopted for transmitting the second PUSCH may specifically include the following procedures:

under the condition that the interval time is longer than the preparation time, one of the target configuration authorization configurations is determined to be a second configuration authorization configuration, and the time granularity of the target configuration authorization configuration is larger than that of the first configuration authorization configuration; or alternatively

And determining the first configuration authorization configuration as the second configuration authorization configuration in the case that the interval duration is smaller than the preparation duration.

It can be understood that if the interval time is longer than the preparation time, the terminal device can be considered to be ready for data transmitted by the next PUSCH (i.e. the second PUSCH) in the interval time, so that configuration authorization configuration with larger time granularity can be used when the next PUSCH is transmitted; if the interval duration is smaller than the preparation duration, the terminal device is considered to be incapable of preparing the data transmitted by the next PUSCH (i.e. the second PUSCH) in the interval time, so that the first configuration authorization configuration can be continuously used when the next PUSCH is transmitted, and further, the configuration authorization configuration with larger time granularity can be used when the next PUSCH after the next PUSCH is transmitted.

Optionally, in another specific embodiment of the target time information, the target time information further includes a transmission start time of the first PUSCH;

wherein determining, according to the target time information, a second configuration authorization configuration adopted for transmitting the second PUSCH includes:

in the case that the transmission start time of the second PUSCH is located after the target time, determining one of the target configuration authorization configurations as the second configuration authorization configuration;

the time granularity of the target configuration authorization configuration is larger than that of the first configuration authorization configuration, and the target time is the ending time after the preparation time is elapsed by taking the transmission starting time of the first PUSCH as the starting point.

It can be understood that when the network device learns the PUSCH preparation duration of the terminal device, the terminal device may be considered to be ready for data of the next PUSCH transmission within the PUSCH preparation duration, and after the terminal device starts to send data after the channel is seized and the PUSCH preparation duration is + after the terminal device transmits the first PUSCH, the terminal device may continue to transmit PUSCH by adopting the configuration authorization configuration with larger time granularity.

Optionally, in any one of the foregoing specific embodiments, UCI in the first PUSCH includes second indication information, where the second indication information is used to indicate whether the terminal device transmits PUSCH on a time domain resource corresponding to the second PUSCH in the second slot or in the first slot.

It may be understood that when the UCI in the first PUSCH includes the second indication information to indicate that the end device transmits the PUSCH in the second slot or on the time domain resource corresponding to the second PUSCH in the first slot, the network device may further determine the second configuration authorization configuration to decode the uplink data based on the second indication information, and if the second indication information indicates that the end device does not transmit the PUSCH in the second slot or on the time domain resource corresponding to the second PUSCH in the first slot, the network device does not determine the second configuration authorization configuration; that is, the network device is instructed to perform the operation of determining the second configuration authorization configuration as necessary through the second instruction information, thereby reducing power consumption and saving resources.

Optionally, in the resource allocation method of the embodiment of the present invention, the method may further include the following steps:

and transmitting the second PUSCH according to the second configuration authorization configuration.

It can be understood that after the second configuration authorization configuration is determined, the second PUSCH may be transmitted based on the second configuration authorization configuration, so as to implement a complete information transmission process.

Corresponding to the resource allocation method executed by the terminal device in fig. 1, the embodiment of the invention also provides a resource allocation method applied to the network device. Referring to fig. 2, the method includes:

Step 201: a plurality of configuration authorization configurations are sent to the terminal device.

Optionally, the plurality of configuration authorization configurations have different time granularity. That is, the network device may match a unique corresponding time granularity for each configuration grant configuration, respectively, where the time granularity includes, but is not limited to, one slot (slot), 2 symbols (symbol), 7 symbols (symbol), and 4 symbols (symbol).

Step 203: and determining a first configuration authorization configuration adopted by the terminal equipment for transmitting the first Physical Uplink Shared Channel (PUSCH) from a plurality of configuration authorization configurations through the blind detection reference signal, wherein the first PUSCH is transmitted after the Listen Before Talk (LBT) is successful in a first time slot.

In the embodiment of the invention, when information transmission is carried out in an unlicensed frequency band, the network equipment generates a plurality of configuration authorized configurations in advance, configures the plurality of configuration authorized configurations for the terminal equipment, and further determines the configuration authorized configuration adopted when the terminal equipment transmits information in a blind detection reference signal mode after the terminal equipment LBT successfully competes to a channel and adopts one configuration authorized configuration of the plurality of configuration authorized configurations to transmit the PUSCH so as to decode uplink data according to the configuration. Therefore, the purpose of increasing the flexibility and efficiency of resource utilization can be achieved by realizing consistent understanding of the configuration mode between the terminal equipment and the network equipment, namely, when the terminal equipment works in an unlicensed frequency band, information transmission is realized by configuring a plurality of configuration authorization configurations for the terminal equipment.

Optionally, for the second PUSCH transmitted by the terminal device after the first PUSCH, the second configuration authorization configuration adopted when the second PUSCH is transmitted may be determined in a different manner.

The second PUSCH is a first PUSCH transmitted by the terminal device after the first PUSCH; or the second PUSCH is a PUSCH transmitted in a second slot, where the second slot is the first slot after the first slot.

In a specific embodiment of determining the second configuration authorization configuration, the resource configuration method of the embodiment of the present invention may further include:

and determining a second configuration authorization configuration adopted by the terminal equipment for transmitting the second PUSCH from the plurality of configuration authorization configurations through the blind detection reference signal.

It can be understood that the network device continues to determine the second configuration grant configuration adopted by the terminal device for transmitting the second PUSCH by means of the blind detection reference signal.

Optionally, in the resource allocation method according to the embodiment of the present invention, in order to achieve the purpose of reducing the blind detection times of the network device, the network device may learn, based on corresponding information from the terminal device, the second allocation authorization configuration adopted by the terminal device for transmitting the second PUSCH after the transmission of the first PUSCH is completed in different manners.

In another specific embodiment of determining the second configuration authorization configuration, the uplink control information carried on the first PUSCH includes first indication information; the resource allocation method of the embodiment of the invention can further comprise the following steps:

and determining a second configuration authorization configuration adopted by the terminal equipment for transmitting the second PUSCH according to the first indication information.

It can be appreciated that the second configuration grant configuration used for PUSCH (i.e., second PUSCH) of the next transmission is determined by including i.e., first indication information in UCI.

Optionally, in a specific embodiment of the first indication information, the first indication information is used to indicate whether the second configuration authorization configuration is the same as the first configuration authorization configuration;

according to the first indication information, determining a second configuration authorization configuration adopted by the terminal equipment for transmitting the second PUSCH comprises:

and if the first indication information indicates the same, determining a second configuration authorization configuration from other configuration authorization configurations except the first configuration authorization configuration in the configuration authorization configurations through the blind detection reference signal.

Further, the determining, according to the first indication information, the second configuration authorization configuration adopted by the terminal device to transmit the second PUSCH further includes:

if the first indication information indicates that the first configuration authorization configuration is different, the first configuration authorization configuration is determined to be the second configuration authorization configuration.

It is understood that it may be determined whether the second configuration authorization configuration is identical to the first configuration authorization configuration according to the first indication information included in the UCI.

Optionally, in another specific embodiment of the first indication information, the first indication information is used for indicating an index of the second configuration authorization configuration, where a number of bits of the first indication information is related to a total number of the plurality of configuration authorization configurations;

the configuration authorization configuration indicated by the index is determined as a second configuration authorization configuration.

It can be understood that, according to the first indication information included in the UCI, the index of the second configuration grant configuration is directly determined, and further, the configuration grant configuration indicated by the index is determined to be the second configuration grant configuration, which is direct and explicit, so that the network device can demodulate the data transmitted by the next PUSCH according to the configuration indicated by the terminal device, without blind detection. Wherein, by correlating the number of bits of the first indication information with the total number of the plurality of configuration authorization configurations, the number of bits can be fully utilized, avoiding waste.

For example, the index of the configured grant configuration used for PUSCH of the next transmission is determined according to the configured grant index field (i.e., first indication information) included in UCI.

In another specific embodiment of determining the second configuration authorization configuration, the resource configuration method of the embodiment of the present invention may further include:

and determining a second configuration authorization configuration adopted by the terminal equipment for transmitting the second PUSCH according to the target time information, wherein the target time information comprises the preparation time length of the PUSCH.

Optionally, in the resource allocation method according to the embodiment of the present invention, the network device is configured to determine target time information of the second configuration authorization configuration adopted by the terminal device to transmit the second PUSCH, and may implement the undefined indication of the second configuration authorization configuration through different content combinations, so as to implement diversity of configuration authorization configuration indications.

wherein, according to the target time information, determining a second configuration authorization configuration adopted by the terminal device for transmitting the second PUSCH includes:

under the condition that the interval time is longer than the preparation time, one of the target configuration authorization configurations is determined to be a second configuration authorization configuration, wherein the time granularity of the target configuration authorization configuration is larger than that of the first configuration authorization configuration; or alternatively

Optionally, in the resource allocation method according to the embodiment of the present invention, UCI in the first PUSCH includes second indication information, where the second indication information is used to indicate whether the terminal device transmits PUSCH on a time domain resource corresponding to the second PUSCH in the second slot or in the first slot;

the determining the second configuration authorization configuration adopted by the terminal equipment for transmitting the second PUSCH comprises the following steps:

in case the second indication information indicates transmission of PUSCH, a second configuration grant configuration is determined.

The following describes a specific scheme of the resource allocation method according to the embodiment of the present invention with reference to fig. 3 to 6.

As shown in fig. 3, the network device configures 2 configuration grant configurations, configuration 1 is based on transmission of 2 symbol time granularity, configuration 2 is based on transmission of 1 slot time granularity, and the two configurations correspond to different demodulation reference signal (Demodulation Reference Signal, DMRS) locations.

When the UE prepares a data buffer with 2 symbol time granularity, as shown in fig. 3, the UE succeeds in the 6 th symbol lbt of slot, where 1 slot is composed of 0-13 th symbol. The PUSCH transmission starts at the 8 th symbol. The UE carries UCI containing field configured grant configuration indicates '0', representing whether the configuration of the next PUSCH is unchanged or based on 2 symbol time granularity transmission, as shown in the actual transmission procedure in the figure.

Then, the UE prepares a data buffer of 1 slot, as shown in fig. 3, the UE carries a UCI containing field configurated grant configuration indication '1' on the last PUSCH of slot transmission, which represents the configuration change of the next PUSCH, and based on 1 slot time granularity transmission, the UE continues to transmit PUSCH based on 1 slot in slot+1, as shown in the actual transmission process in the figure.

Further, if the UCI carried by the PUSCH transmitted by the UE in the slot+1 includes a field burst lnnext slot (i.e., the second indication information) indicating '1', it indicates that no data is transmitted in the next slot.

As shown in fig. 4, the network device configures 3 configuration grant configurations, wherein the configurable grant configuration index field of UCI is 2 bits, indicating 3 configurations: '01' indicates configuration 1, corresponding to uplink transmission based on 2 symbol time granularity; '10' indicates configuration 2, corresponding to uplink transmission based on 1-slot time granularity; '11' indicates configuration 3, corresponding to an uplink transmission based on a 7-symbol time granularity.

The UE then prepares a 2 symbol data buffer, as in fig. 4, the UE succeeds at the 6 th symbol lbt of slot, where 1 slot consists of 0-13 th symbol. The PUSCH transmission starts at the 8 th symbol. The UE indicates '01' in the field configuredgrantconfilindex of UCI, representing the next PUSCH transmission based on configuration 1, i.e. based on 2-symbol transmission, as shown in the actual transmission procedure in the figure.

Then the UE prepares a data buffer of 7 symbols, as shown in fig. 4, and the UE carries the UCI containing field ConfiguredGrantConfigIndex to indicate '11' on the last PUSCH of the slot transmission, representing that the next PUSCH is transmitted based on configuration 3, that is, based on 7 symbol time granularity transmission, and the UE continues to transmit PUSCH based on 7 symbols in slot+1, as shown in the actual transmission procedure in the figure.

Further, if the PUSCH carried UCI transmitted by the UE at sloti+1 includes a field burstinxtslot indication '1', then the symbol7-symbol13 of sloti+1 is indicated to have no data transmission.

As shown in fig. 5, the network device configures 3 configuration authorization configurations, which are based on 2 symbol time granularity, 1 slot time granularity, and 7symbol time granularity transmissions, respectively.

When the UE prepares 2 symbol data buffers, as shown in fig. 5, the UE succeeds in the 6 th symbol lbt of slot, where 1 slot consists of 0-13 th symbol. The PUSCH transmission starts at the 8 th symbol. The network device compares the time length T (i.e. interval duration) from the moment when the UE starts to transmit data at the current sloti to the end boundary of the sloti with the data preparation duration M (i.e. the preparation duration of the PUSCH), and obtains that T is larger than M. The UE prepares 7symbol data buffers. At slot i+1, the ue transmits PUSCH based on 7symbol time granularity, as shown by the actual transmission procedure in the figure.

Further, if the PUSCH carried UCI transmitted by the UE at sloti+1 includes a field burstinxtslot indication '1', symbol7-symbol13 representing sloti+1 has no data transmission.

As shown in fig. 6, the network device configures 4 configuration authorization configurations, which are based on 2 symbol time granularity, 1 slot time granularity, 7symbol time granularity, and 4 symbol time granularity transmissions, respectively.

When the UE prepares 2 symbol data buffers, as shown in fig. 6, the UE succeeds at 8 th symbol lbt of slot, where 1 slot consists of 0-13 th symbol. The PUSCH transmission starts at the 10 th symbol. After the network equipment according to the time when the UE starts to send data at the current slot and the data preparation time M reported by the UE, the UE is converted into transmission based on 4 symbol time granularity, as shown in the actual transmission process in the figure.

When the UE prepares a data buffer of 4 symbols, as shown in fig. 6, starts at the 3 rd symbol of slot i+1, the UE transmits PUSCH based on 4 symbol time granularity, as shown in the actual transmission procedure in the figure.

Further, if the UE carries the UCI containing the field burstinnext indication '1' at the last PUSCH of the slot+1 transmission, it represents that slot+2 has no data transmission, as shown in the actual transmission process in the figure.

As can be seen from the foregoing, in the embodiment of the present invention, the network device generates multiple configurable grant configurations based on different time granularity, and when the UE prepares data of different transmission blocks TB (Ttransport block) size and specifically performs actual transmission, the UE selects a certain configurable grant configuration to transmit corresponding data according to the LBT result, and informs the network device of the configuration situation of transmitting the next PUSCH use by using an explicit indication or an unequivocal indication manner. Therefore, on the premise of increasing the channel access opportunity, the HARQ process number can be effectively reduced, the cost of control signaling is reduced, and the flexibility and the efficiency of resource utilization are increased.

Referring to fig. 7, an embodiment of the present invention provides a terminal device 300, where the terminal device 300 includes:

a receiving module 301, configured to receive a plurality of configuration authorization configurations;

A transmission module 303, configured to transmit the first physical uplink shared channel PUSCH according to a first configuration grant configuration of the configuration grants in case the listen before talk LBT is successful within the first slot.

Optionally, in the terminal device 300 of the embodiment of the present invention, the uplink control information UCI carried on the first PUSCH includes first indication information, where the first indication information is used to indicate a second configuration authorization configuration adopted by the terminal device 300 to transmit the second PUSCH.

Optionally, in the terminal device 300 according to the embodiment of the present invention, the first indication information is used to indicate whether the second configuration authorization configuration is the same as the first configuration authorization configuration.

Optionally, in the terminal device 300 of the embodiment of the present invention, the first indication information is used to indicate an index of the second configuration authorization configuration, where the number of bits of the first indication information is related to the total number of the plurality of configuration authorization configurations.

Optionally, in the terminal device 300 of the embodiment of the present invention, the terminal device 300 further includes:

and the determining module is used for determining a second configuration authorization configuration adopted for transmitting the second PUSCH according to target time information, wherein the target time information comprises the preparation time length of the PUSCH.

Optionally, in the terminal device 300 of the embodiment of the present invention, the target time information further includes an interval duration between a transmission start time of the first PUSCH and an end time of the first slot;

the determining module may be specifically configured to:

Optionally, in the terminal device 300 of the embodiment of the present invention, the target time information further includes a transmission start time of the first PUSCH;

the determining module may be specifically configured to: in the case that the transmission start time of the second PUSCH is located after the target time, determining one of the target configuration authorization configurations as the second configuration authorization configuration;

Optionally, in the terminal device 300 of the embodiment of the present invention, the second PUSCH is a first PUSCH transmitted by the terminal device 300 after the first PUSCH; or alternatively

The second PUSCH is a PUSCH transmitted in a second slot, where the second slot is the first slot after the first slot.

Optionally, in the terminal device 300 of the embodiment of the present invention, the UCI in the first PUSCH includes second indication information, where the second indication information is used to indicate whether the terminal device 300 transmits the PUSCH on a time domain resource corresponding to the second PUSCH in the second slot or in the first slot.

Optionally, in the terminal device 300 according to the embodiment of the present invention, the above-mentioned transmission module 303 may be further configured to:

Optionally, in the terminal device 300 according to the embodiment of the present invention, the time granularity of the plurality of configuration authorization configurations is different.

Optionally, in the terminal device 300 according to the embodiment of the present invention, the indexes of the plurality of configuration authorization configurations are different.

Optionally, in the terminal device 300 according to the embodiment of the present invention, the above-mentioned plurality of reference signal parameters configured for authorization and configuration are different.

It can be understood that, in the terminal device 300 provided in the embodiment of the present invention, the foregoing resource allocation method performed by the terminal device 300 can be implemented, and the relevant descriptions about the resource allocation method are applicable to the terminal device 300, which is not repeated herein.

Referring to fig. 8, an embodiment of the present invention provides a network device 400, where the network device 400 includes:

a sending module 401, configured to send a plurality of configuration authorization configurations to a terminal device;

a determining module 403, configured to determine, from a plurality of configuration grant configurations, a first configuration grant configuration adopted by a terminal device for transmitting a first physical uplink shared channel PUSCH, where the first PUSCH is transmitted after hearing before talk LBT is successful in a first slot.

Optionally, in the network device 400 according to the embodiment of the present invention, the determining module 403 may be further configured to:

Optionally, in the network device 400 of the embodiment of the present invention, the uplink control information carried on the first PUSCH includes first indication information;

the determining module 403 may be specifically configured to:

Optionally, in the network device 400 according to the embodiment of the present invention, the first indication information is used to indicate whether the second configuration authorization configuration is the same as the first configuration authorization configuration;

the determining module 403 may be specifically configured to:

Optionally, in the network device 400 according to the embodiment of the present invention, the determining module 403 may be specifically further configured to:

Optionally, in the network device 400 of the embodiment of the present invention, the first indication information is used to indicate an index of the second configuration authorization configuration, and the number of bits of the first indication information is related to the total number of the plurality of configuration authorization configurations;

the determining module 403 may be specifically configured to:

Optionally, in the network device 400 of the embodiment of the present invention, the target time information further includes an interval duration between a transmission start time of the first PUSCH and an end time of the first slot;

the determining module 403 may be specifically configured to:

Optionally, in the network device 400 of the embodiment of the present invention, the target time information further includes a transmission start time of the first PUSCH;

the determining module 403 may be specifically configured to:

Optionally, in the network device 400 of the embodiment of the present invention, the second PUSCH is a first PUSCH transmitted by the terminal device after the first PUSCH; or alternatively

Optionally, in the network device 400 of the embodiment of the present invention, the UCI in the first PUSCH includes second indication information, where the second indication information is used to indicate whether the terminal device transmits the PUSCH in the second slot or on a time domain resource corresponding to the second PUSCH in the first slot;

The determining module 403 is specifically configured to:

Optionally, in the network device 400 according to the embodiment of the present invention, the time granularity of the plurality of configuration authorization configurations is different.

Optionally, in the network device 400 according to the embodiment of the present invention, the indexes of the plurality of configuration authorization configurations are different.

Optionally, in the network device 400 according to the embodiment of the present invention, the above-mentioned plurality of reference signal parameters configured for authorization and configuration are different.

It can be understood that the network device provided by the embodiment of the present invention can implement the foregoing resource allocation method executed by the network device, and the relevant descriptions about the resource allocation method are applicable to the network device, which is not repeated herein.

Fig. 9 is a block diagram of a terminal device according to another embodiment of the present invention. The terminal device 500 shown in fig. 9 includes: at least one processor 501, memory 502, at least one network interface 504, and a user interface 503. The various components in the terminal device 500 are coupled together by a bus system 505. It is understood that bus system 505 is used to enable connected communications between these components. The bus system 505 includes a power bus, a control bus, and a status signal bus in addition to a data bus. But for clarity of illustration the various buses are labeled as bus system 505 in fig. 9.

The user interface 503 may include, among other things, a display, a keyboard, or a pointing device (e.g., a mouse, a trackball, a touch pad, or a touch screen, etc.).

It will be appreciated that the memory 502 in embodiments of the invention can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (Double Data Rate SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DRRAM). The memory 502 of the systems and methods described in embodiments of the present invention is intended to comprise, without being limited to, these and any other suitable types of memory.

In some implementations, the memory 502 stores the following elements, executable modules or data structures, or a subset thereof, or an extended set thereof: an operating system 5021 and application programs 5022.

The operating system 5021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, for implementing various basic services and processing hardware-based tasks. The application 5022 includes various application programs such as a Media Player (Media Player), a Browser (Browser), and the like for realizing various application services. A program for implementing the method according to the embodiment of the present invention may be included in the application 5022.

In the embodiment of the present invention, the terminal device 500 further includes: a computer program stored on the memory 502 and executable on the processor 501, which when executed by the processor 501 performs the steps of:

receiving a plurality of configuration authorization configurations;

and under the condition that Listen Before Talk (LBT) is successful in the first time slot, transmitting a first Physical Uplink Shared Channel (PUSCH) according to a first configuration authorization configuration in a plurality of configuration authorization configurations.

The method disclosed in the above embodiment of the present invention may be applied to the processor 501 or implemented by the processor 501. The processor 501 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuitry in hardware or instructions in software in the processor 501. The processor 501 may be a general purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be embodied directly in the execution of a hardware decoding processor, or in the execution of a combination of hardware and software modules in a decoding processor. The software modules may be located in a computer readable storage medium well known in the art such as random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, and the like. The computer readable storage medium is located in a memory 502, and the processor 501 reads information in the memory 502 and, in combination with its hardware, performs the steps of the method described above. Specifically, the computer readable storage medium has stored thereon a computer program which, when executed by the processor 501, implements the steps of the resource allocation method embodiments described above.

It is to be understood that the embodiments of the invention described herein may be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For a hardware implementation, the processing units may be implemented within one or more application specific integrated circuits (Application Specific Integrated Circuits, ASIC), digital signal processors (Digital Signal Processing, DSP), digital signal processing devices (DSP devices, DSPD), programmable logic devices (Programmable Logic Device, PLD), field programmable gate arrays (Field-Programmable Gate Array, FPGA), general purpose processors, controllers, microcontrollers, microprocessors, other electronic units designed to perform the functions described herein, or a combination thereof.

For a software implementation, the techniques described in embodiments of the present invention may be implemented by modules (e.g., procedures, functions, and so on) that perform the functions described in embodiments of the present invention. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.

The terminal device 500 can implement each process implemented by the terminal device in the foregoing embodiment, and in order to avoid repetition, a description is omitted here.

Referring to fig. 10, fig. 10 is a block diagram of a network device to which the embodiment of the present invention is applied, so that details of the foregoing resource allocation method can be implemented, and the same effects are achieved. As shown in fig. 10, the network device 600 includes: processor 601, transceiver 602, memory 603, user interface 604 and bus interface 605, wherein:

in an embodiment of the present invention, the network device 600 further includes: a computer program stored on the memory 603 and executable on the processor 601, which when executed by the processor 601 performs the steps of:

and determining a first configuration authorization configuration adopted by the terminal equipment for transmitting the first Physical Uplink Shared Channel (PUSCH) from a plurality of configuration authorization configurations through the blind detection reference signal, wherein the first PUSCH is transmitted after hearing before speaking (LBT) is successful in a first time slot.

In fig. 10, a bus architecture may be comprised of any number of interconnected buses and bridges, and in particular, one or more processors represented by the processor 601 and various circuits of the memory represented by the memory 603. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. Bus interface 605 provides an interface. The transceiver 602 may be a number of elements, i.e., including a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium. The user interface 604 may also be an interface capable of interfacing with an inscribed desired device for a different user device, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 601 is responsible for managing the bus architecture and general processing, and the memory 603 may store data used by the processor 601 in performing operations.

Preferably, the embodiment of the present invention further provides a terminal device, including a processor, a memory, and a computer program stored in the memory and capable of running on the processor, where the computer program when executed by the processor implements each process of the above embodiment of the resource allocation method, and the same technical effects can be achieved, so that repetition is avoided, and details are not repeated here.

The embodiment of the invention also provides a computer readable storage medium, on which a computer program is stored, which when executed by a processor, implements the above-mentioned processes of the resource allocation method embodiment applied to the terminal device, and can achieve the same technical effects, so that repetition is avoided, and no further description is given here. Wherein the computer readable storage medium is selected from Read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), magnetic disk or optical disk.

Preferably, the embodiment of the present invention further provides a network device, including a processor, a memory, and a computer program stored in the memory and capable of running on the processor, where the computer program when executed by the processor implements each process of the above embodiment of the resource allocation method, and the same technical effects can be achieved, and for avoiding repetition, a description is omitted herein.

The embodiment of the invention also provides a computer readable storage medium, on which a computer program is stored, which when executed by a processor, implements the above-mentioned processes of the resource allocation method embodiment applied to the network device, and can achieve the same technical effects, so that repetition is avoided, and no further description is given here. Wherein the computer readable storage medium is selected from Read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), magnetic disk or optical disk.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present invention.

The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are to be protected by the present invention.

Claims

1. A resource allocation method applied to a terminal device, the method comprising:

receiving a plurality of configuration authorization configurations;

2. The method of claim 1, wherein uplink control information UCI carried on the first PUSCH includes first indication information, where the first indication information is used to indicate a second configuration grant configuration adopted by the terminal device to transmit a second PUSCH.

3. The method of claim 2, wherein the first indication information is used to indicate whether the second configuration authorization configuration is the same as the first configuration authorization configuration.

4. The method of claim 2, wherein the first indication information is used to indicate an index of the second configuration authorization configuration, wherein a number of bits of the first indication information is related to a total number of the plurality of configuration authorization configurations.

5. The method according to claim 1, wherein the method further comprises:

6. The method of claim 5, wherein the target time information further comprises a duration of an interval between a transmission start time of the first PUSCH and an end time of the first slot;

wherein, the determining, according to the target time information, the second configuration authorization configuration adopted for transmitting the second PUSCH includes:

determining one of target configuration authorization configurations as the second configuration authorization configuration if the interval time is longer than the preparation time, wherein the time granularity of the target configuration authorization configuration is greater than the time granularity of the first configuration authorization configuration; or alternatively

And determining the first configuration authorization configuration as the second configuration authorization configuration under the condition that the interval duration is smaller than the preparation duration.

7. The method of claim 5, wherein the target time information further comprises a transmission start time of the first PUSCH;

determining one of target configuration grant configurations as the second configuration grant configuration in a case where the transmission start time of the second PUSCH is located after the target time;

the time granularity of the target configuration authorization configuration is larger than the time granularity of the first configuration authorization configuration, and the target time is the end time after the preparation time is passed by taking the transmission start time of the first PUSCH as the start time.

8. The method according to any one of claims 2-7, wherein the second PUSCH is a first PUSCH transmitted by the terminal device after the first PUSCH; or alternatively

9. The method of claim 8, wherein UCI in the first PUSCH includes second indication information, wherein the second indication information is used to indicate whether the terminal device transmits PUSCH on a time domain resource corresponding to the second PUSCH within the second slot or within the first slot.

10. The method according to any one of claims 2 to 7, further comprising:

11. The method according to any one of claims 1 to 7, wherein,

the plurality of configuration authorization configurations have different time granularity.

12. The method of claim 11, wherein the step of determining the position of the probe is performed,

the plurality of configuration authorization configurations have different indexes.

13. The method of claim 11, wherein the step of determining the position of the probe is performed,

the plurality of configuration grant configured reference signal parameters are different.

14. A method for configuring resources, applied to a network device, the method comprising:

15. The method of claim 14, wherein the method further comprises:

and determining a second configuration authorization configuration adopted by the terminal equipment for transmitting a second PUSCH from the plurality of configuration authorization configurations through a blind detection reference signal.

16. The method of claim 14, wherein the uplink control information carried on the first PUSCH includes first indication information;

wherein the method further comprises:

and determining a second configuration authorization configuration adopted by the terminal equipment for transmitting a second PUSCH according to the first indication information.

17. The method of claim 16, wherein the first indication information is used to indicate whether the second configuration authorization configuration is the same as the first configuration authorization configuration;

wherein, the determining, according to the first indication information, the second configuration authorization configuration adopted by the terminal device for transmitting the second PUSCH includes:

and if the first indication information indicates the same, determining a second configuration authorization configuration from other configuration authorization configurations except the first configuration authorization configuration in the configuration authorization configurations through blind detection reference signals.

18. The method of claim 17, wherein the determining, according to the first indication information, a second configuration grant configuration employed by the terminal device for transmitting a second PUSCH further comprises:

and if the first indication information indicates that the first configuration authorization configuration is different, determining the first configuration authorization configuration as the second configuration authorization configuration.

19. The method of claim 16, wherein the first indication information is used to indicate an index of the second configuration authorization configuration, wherein a number of bits of the first indication information is related to a total number of the plurality of configuration authorization configurations;

and determining the configuration authorization configuration indicated by the index as the second configuration authorization configuration.

20. The method of claim 14, wherein the method further comprises:

and determining a second configuration authorization configuration adopted by the terminal equipment for transmitting a second PUSCH according to target time information, wherein the target time information comprises the preparation time of the PUSCH.

21. The method of claim 20, wherein the target time information further comprises a duration of an interval between a transmission start time of the first PUSCH and an end time of the first slot;

the determining, according to the target time information, a second configuration authorization configuration adopted by the terminal device for transmitting a second PUSCH includes:

22. The method of claim 20, wherein the target time information further comprises a transmission start time of the first PUSCH;

23. The method according to any one of claims 15-22, wherein the second PUSCH is a first PUSCH transmitted by the terminal device after the first PUSCH; or alternatively

24. The method of claim 23, wherein UCI in the first PUSCH includes second indication information, wherein the second indication information is used to indicate whether the terminal device transmits PUSCH on a time domain resource corresponding to the second PUSCH in the second slot or in the first slot;

the determining the second configuration authorization configuration adopted by the terminal device for transmitting the second PUSCH includes:

and determining the second configuration authorization configuration in the case that the second indication information indicates transmission of the PUSCH.

25. The method according to any one of claims 14 to 22, wherein,

26. The method of claim 25, wherein the step of determining the position of the probe is performed,

27. The method of claim 25, wherein the step of determining the position of the probe is performed,

28. A terminal device, comprising:

29. A network device, comprising:

30. A terminal device, comprising: memory, a processor and a computer program stored on the memory and executable on the processor, which when executed by the processor, performs the steps of the method according to any one of claims 1 to 13.

31. A network device, comprising: memory, a processor and a computer program stored on the memory and executable on the processor, which when executed by the processor, performs the steps of the method according to any one of claims 14 to 27.

32. A computer readable storage medium, characterized in that it has stored thereon a computer program which, when executed by a processor, implements the steps of the method according to any of claims 1 to 27.