CN112583534A

CN112583534A - Method for sending and receiving signaling, network equipment and terminal

Info

Publication number: CN112583534A
Application number: CN201910935825.5A
Authority: CN
Inventors: 白伟; 高雪娟; 邢艳萍; 王磊
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2021-03-30

Abstract

The invention discloses a method for sending and receiving a signaling, network equipment and a terminal. The signaling sending method comprises the following steps: generating activation/deactivation signaling, wherein the activation/deactivation signaling is used for activating/deactivating one configuration of a plurality of data transmission configurations, and at least one part of a verification field in the activation/deactivation signaling is as follows: at least one field of configurable length; and sending the activation/deactivation signaling to the terminal. The scheme of the invention can set enough bits in the activation signaling as the verification field, thereby reducing the false alarm rate of the activation signaling.

Description

Method for sending and receiving signaling, network equipment and terminal

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method for sending and receiving a signaling, a network device, and a terminal.

Background

As the demand for mobile communication services has changed, New wireless communication systems (i.e., 5G NR, 5 Generation New RAT) have become available. In the 5G NR system, an important requirement is low-delay and high-reliability communication, and a transmission scheme such as URLLC is presented.

For URLLC (ultra-reliable, low-delay communication) service, an uplink scheduling-free transmission method is introduced in NR, that is, before uplink data transmission, UE (User Equipment or terminal) does not need to send a scheduling request to the gNB, and does not need to wait for uplink scheduling grant of the base station, but the UE autonomously sends uplink data in a pre-configured resource.

The uplink scheduling-free data transmission scheme is divided into Type 1 and Type 2. For the uplink scheduling-free data transmission of Type 2, RRC (radio resource control) configuration is firstly carried out by the gNB, and then uplink transmission is activated by the gNB through an activation signaling; the terminal can directly transmit uplink data when the uplink data needs to be transmitted according to RRC configuration after receiving the activation signaling, so that the time delay of the uplink data can be reduced, and the problem of low resource utilization rate in Type 1 uplink scheduling-free data transmission is partially solved. In practical application, it can be considered that the terminal under the scenario that the requirement on time delay is particularly high and the arrival of service data is controllable adopts Type 2 uplink scheduling-free data transmission, so as to realize low-time delay and high-efficiency uplink data transmission. For URLLC traffic, a repeat transmission method is introduced in NR to enhance reliability. Therefore, the two are combined into an uplink scheduling-free repeat transmission scheme.

Because the arrival of user data at the terminal side is random, but a configuration period is defined in the uplink scheduling-free repeat transmission scheme, and meanwhile, after the terminal starts to transmit in a period, the terminal must finish the period, and the period cannot be crossed, which causes that the actual repeat transmission times are less than the configured repeat transmission times, and affects the reliability.

On the premise of ensuring early transmission after data arrival, in order to improve reliability, a plurality of parallel configurations appear, and each configuration has a stagger in a period starting position, namely a multi-configuration scheme.

When multiple configurations are activated by using activation signaling, if one configuration in the multiple configurations is activated, a special bit is needed to indicate which specific configuration in the multiple configurations is activated, that is, some bits need to be taken out to indicate the number of the configuration to be activated, and these bits also need a fixed field, so that the fixed field for verification is reduced, and the false alarm probability of the activation signaling is affected.

Disclosure of Invention

The embodiment of the invention provides a method for sending and receiving a signaling, network equipment and a terminal. Enough validation bits can be set to solve the problem of high activation signaling false alarm rate.

In order to solve the above technical problem, an embodiment of the present invention provides the following technical solutions:

a signaling sending method is applied to a network device, and comprises the following steps:

generating activation/deactivation signaling, wherein the activation/deactivation signaling is used for activating/deactivating one configuration of a plurality of data transmission configurations, and at least one part of a verification field in the activation/deactivation signaling is as follows: at least one field of configurable length;

and sending the activation/deactivation signaling to the terminal.

Optionally, the activation/deactivation signaling includes at least one of:

activating/deactivating signaling of uplink scheduling-free transmission;

and activating/deactivating signaling of downlink semi-persistent transmission.

Optionally, the activation signaling of the uplink non-scheduling transmission is: when the downlink control information DCI of the first format is used, the field with the configurable length includes at least one of the following fields:

a first downlink allocation index field;

a second downlink allocation index field;

a sounding reference signal, SRS, request field;

a coding block group transmission information field;

a phase tracking reference signal-demodulation reference signal relationship field;

a code rate offset indication field;

a padding bit field.

Optionally, the verification field includes a first part and a second part, where the first part includes the field with the configurable length, and the second part includes a fixed length field, the second part includes at least one of the following fields:

high-order bit of HARQ process number field;

a redundancy version field;

scheduling a power control command field of a Physical Uplink Shared Channel (PUSCH);

an uplink-shared channel UL-SCH indication field.

Optionally, the activation signaling of the downlink semi-persistent transmission is: when the downlink control information DCI of the second format is used, the field with the configurable length includes at least one of the following fields:

a transmission configuration indication field;

a coding block group transmission information field;

the information field is flushed by the coding code block group;

a padding bit field.

high bit of HARQ process number field;

a redundancy version field;

scheduling a power control command field of a Physical Uplink Control Channel (PUCCH);

a physical uplink control channel resource indication field;

a sounding reference signal, SRS, request field.

Optionally, the uplink scheduling-free transmission activation signaling or the downlink semi-persistent transmission activation signaling is: when the new downlink control information DCI is used for the transmission of the ultra-reliable low-delay communication URLLC, the field with the configurable length comprises: at least one of the other fields except the scheduling information field.

Optionally, when the field with the configurable length includes multiple fields, the multiple fields are integrated.

The embodiment of the invention also provides a method for receiving the signaling, which is applied to a terminal and comprises the following steps:

receiving activation/deactivation signaling sent by a network device, wherein the activation/deactivation signaling is used for activating/deactivating one configuration of multiple data transmission configurations, and at least one part of a verification field in the activation/deactivation signaling is as follows: at least one configurable length field.

Optionally, the activation signaling/deactivation includes at least one of:

activating/deactivating signaling of uplink scheduling-free transmission;

and activating/deactivating signaling of downlink semi-persistent transmission.

a first downlink allocation index field;

a second downlink allocation index field;

a sounding reference signal, SRS, request field;

a coding block group transmission information field;

a code rate offset indication field;

and filling the field.

high-order bit of HARQ process number field;

a redundancy version field;

an uplink-shared channel UL-SCH indication field.

a transmission configuration indication field;

a coding block group transmission information field;

the information field is flushed by the coding code block group;

and filling the field.

high bit of HARQ process number field;

a redundancy version field;

a physical uplink control channel resource indication field;

a sounding reference signal, SRS, request field.

An embodiment of the present invention further provides a network device, including: a processor, a transceiver, and a memory, wherein the memory stores a program executable by the processor, and the processor implements the following when executing the program: generating activation/deactivation signaling, wherein the activation/deactivation signaling is used for activating/deactivating one configuration of a plurality of data transmission configurations, and at least one part of a verification field in the activation/deactivation signaling is as follows: at least one field of configurable length; and sending the activation/deactivation signaling to the terminal.

The embodiment of the present invention further provides a signaling sending apparatus, including:

a processing module, configured to generate an activation/deactivation signaling, where the activation/deactivation signaling is used to activate/deactivate one of a plurality of data transmission configurations, and at least a portion of a verification field in the activation/deactivation signaling is: at least one field of configurable length;

and the transceiver module is used for sending the activation/deactivation signaling to the terminal.

An embodiment of the present invention further provides a terminal, including: a processor, a transceiver, and a memory, wherein the memory stores a program executable by the processor, and the processor implements the following when executing the program: receiving activation/deactivation signaling sent by a network device, wherein the activation/deactivation signaling is used for activating/deactivating one configuration of multiple data transmission configurations, and at least one part of a verification field in the activation/deactivation signaling is as follows: at least one configurable length field.

The embodiment of the present invention further provides a device for receiving signaling, including:

a transceiver module, configured to receive an activation/deactivation signaling sent by a network device, where the activation/deactivation signaling is used to activate/deactivate one of multiple data transmission configurations, and at least a part of a verification field in the activation/deactivation signaling is: at least one configurable length field.

Embodiments of the present invention also provide a computer storage medium including instructions that, when executed on a computer, cause the computer to perform the method as described above.

The embodiment of the invention has the beneficial effects that:

in the above embodiments of the present invention, an activation/deactivation signaling is generated by a network device, where the activation/deactivation signaling is used to activate/deactivate one of a plurality of data transmission configurations, and at least a part of a verification field in the activation/deactivation signaling is: at least one field of configurable length; and sending the activation/deactivation signaling to the terminal. Enough bits can be set in the activation signaling as the verification field, so that the false alarm rate of the activation signaling is reduced.

Drawings

Fig. 1 is a flow chart illustrating a signaling sending method according to the present invention;

fig. 2 is a flow chart of a signaling receiving method according to the present invention;

FIG. 3 is a block diagram of a network device according to the present invention;

FIG. 4 is a block diagram of a signaling device according to the present invention;

FIG. 5 is a block diagram of a terminal according to the present invention;

fig. 6 is a block diagram of a signaling receiving apparatus according to the present invention.

Detailed Description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

As shown in fig. 1, an embodiment of the present invention provides a signaling sending method, which is applied to a network device, and the method includes:

step 11, generating an activation/deactivation signaling, where the activation/deactivation signaling is used to activate/deactivate one of a plurality of data transmission configurations, and at least a part of a verification field in the activation/deactivation signaling is: at least one field of configurable length;

and step 12, sending the activation/deactivation signaling to the terminal.

In this embodiment of the present invention, the field with configurable length may be DCI for a certain format in a protocol, where the field length is configurable by higher layer signaling (e.g. RRC), and the length may be 0 or a configurable length greater than 0; for DCI for dynamically scheduled transmission, a field in the DCI is a length field configured by RRC, and the length field is a configurable length field when the DCI is used for active signaling.

In this embodiment of the present invention, an activation/deactivation signaling is generated by a network device, where the activation/deactivation signaling is used to activate one of a plurality of data transmission configurations, and at least a part of a verification field in the activation/deactivation signaling is: at least one field of configurable length; and sending the activation/deactivation signaling to the terminal. When the signaling is the activation signaling, enough bits can be set in the activation signaling as the verification field, so that the false alarm of the activation signaling is reduced.

In an optional embodiment of the present invention, the activation/deactivation signaling includes at least one of:

1) activating/deactivating signaling of uplink scheduling-free transmission; the activation/deactivation signaling may be semi-statically configured activation/deactivation signaling that the network device performs Type 2 uplink scheduling-free transmission on the terminal, or may be activation/deactivation signaling of new ultra-reliable low-latency communication (URLLC) transmission, where the activation/deactivation signaling may be in a new URLLC DCI (downlink control information) format.

2) Activation/deactivation signaling of downlink semi-persistent (DL SPS) transmissions; the activation/deactivation signaling may be an activation signaling for the network device to perform static configuration on the downlink semi-persistent transmission of the terminal; or may be an activation signaling transmitted by a new ultra-reliable low-latency communication (URLLC), where the activation signaling may be in a new URLLC DCI (downlink control information) format.

In an optional embodiment of the present invention, the activation signaling of the uplink non-scheduling transmission is: the field of the configurable length includes at least one of the following fields when the downlink control information DCI of the first format (for example, when DCI 0_1 or DCI 0_0 is used:

a first downlink allocation index field (1st downlink allocation index);

a second downlink allocation index field (2nd downlink allocation index);

a sounding reference signal, SRS, request field (SRS request);

a coding block group transmission information field (CBG transmission information, CBGTI);

a phase tracking reference signal-demodulation reference signal relationship field (PTRS-DMRS association);

a code rate offset indication field (beta _ offset indicator);

padding field (padding).

In the DCI of the first format, at least one field of a configurable bit length is used as all of the authentication field or a part of the authentication field. The authentication field, if all of it, may include at least one of the configurable lengths described above.

If part of the authentication field, another part of the authentication field may be in other fixed fields in the DCI of the first format. Optionally, the verification field includes a first part and a second part, where the first part includes the field with the configurable length, and the second part includes a fixed length field, the second part includes at least one of the following fields:

a hybrid automatic repeat request HARQ process number field (HARQ process number);

a Redundancy version field (Redundancy version);

a power control command field (TPC command for scheduled PUSCH) of a scheduling Physical Uplink Shared Channel (PUSCH);

an uplink-shared channel UL-SCH indication field (UL-SCH indicator).

Thus, in DCI 0_1, at least one of the following fields is an authentication field:

a Redundancy version field (Redundancy version);

an uplink-shared channel UL-SCH indication field (UL-SCH indicator);

a first downlink assignment index field (1st downlink assignment index, 1st DAI field);

a second downlink allocation index field (2nd downlink allocation index, 2nd DAI field);

a sounding reference signal, SRS, request field (SRS request);

a code rate offset indication field;

padding field (padding).

The field of the configurable bit length includes a 1st DAI field, a 2nd DAI field, an SRS request field, a CBGTI field, a PTRS-DMRS association field, a beta _ offset indication field, and a padding bit field.

For example, a specific implementation of DCI 0_1 is as follows:

wherein the following fields are taken as scheduling information fields:

DCI format indication field (Identifier for DCI formats): 1bit, indicating DCI format identification;

carrier indication field (Carrier indicator): 0 or 3bits, and the corresponding information is frequency domain allocation;

supplemental uplink indication field (UL/SUL indicator): 0bit or 1bit, and frequency domain allocation is the corresponding information;

bandwidth part indication field (Bandwidth part indicator): 0,1 or 2bits, BWP indication, corresponding information is frequency domain allocation;

frequency domain resource allocation field (Frequency domain resource assignment): the corresponding information is frequency domain allocation;

time domain resource allocation field (Time domain resource assignment): the corresponding information is timeDomainOffset and timeDomainAllocation;

frequency hopping flag field (Frequency hopping flag): 0 or 1bit, a frequency hopping flag, and the corresponding information is frequency hoppingoffset;

modulation and coding scheme field (Modulation and coding scheme): 5bits, MCS, and the corresponding information is MCS anddTBS;

uplink sounding reference signal SRS resource indication field (SRS resource indicator):

bits, wherein the corresponding information is srs-resource identifier;

precoding information and number of layers field (Precoding information and number of layers): the corresponding information is precoding AndNumberOfLayers;

antenna port field (Antenna ports): the corresponding information is antennaPort;

channel state information CSI request field (CSI request): 0,1,2,3,4,5, or 6bits, and the corresponding information is pathlossreferenced index (pathloss reference index);

demodulation reference signal DMRS sequence initialization field (DMRS sequence initialization): 0bit if transform decoder is enabled; 1bit if transform decoder is disabled;

initializing a DMRS sequence, wherein the corresponding information is DMRS-SeqInitiation;

admission condition field (New data indicator) of activation signaling: 1 bit;

the following fields are used as authentication information fields:

high order bit (HARQ process number) of the hybrid automatic repeat request HARQ process number field: 4bits, fixed length field, reinterpretation, and the corresponding information is a label of activation configuration;

redundancy version field (Redundancy version): 2bits, a fixed length field, a verification field for activating signaling;

scheduling power control command field (TPC command for scheduled PUSCH) of physical uplink shared channel PUSCH: 2bits, a fixed length field, a verification field for activating signaling;

uplink-shared channel UL-SCH indication field (UL-SCH indicator): 1bit, fixed length field, verification field for activating signaling;

first downlink allocation index field (1st downlink allocation index): 1 or 2bits, activating a configurable length field of the signaling;

second downlink allocation index field (2nd downlink allocation index): 0 or 2bits, activating a configurable length field of the signaling;

sounding reference signal, SRS, request field (SRS request): 2bits or 3bits, This bit field mass index the associated CSI-RS, a configurable length field of an activation signaling;

a coding block group transmission information field (CBG transmission information, CBGTI): 0,2,4,6, or 8bits, a configurable length field for activation signaling;

phase tracking reference signal-demodulation reference signal relationship field (PTRS-DMRS association): 0bit or 2bits, activating a configurable length field of the signaling;

rate offset indication field (beta _ offset indicator): -0 bit or 2bits, configurable length field of the activation signaling;

padding field (padding), configurable length field for activation signaling.

In particular, some or all of the 1st DAI field, the 2nd DAI field, the SRS request field, the CBGTI field, the PTRS-DMRS association field, the beta _ offset indication field, and the padding bit field may be used as the verification field if they are configured, i.e., the number of bits is greater than 0.

In an optional embodiment of the present invention, the activation signaling for downlink semi-persistent transmission is: the downlink control information DCI of the second format (for example, when DCI 1_1 or DCI 1_0, the field with the configurable length includes at least one of the following fields:

a Transmission configuration indication field (Transmission configuration indication);

a coded block group transmission information field (CBG transmission information (CBGTI);

a coding block group flushing out information field (CBG flushing out information (CBGFI);

padding field (padding).

In the DCI of the second format, at least one field of a configurable bit length is used as all or part of the authentication field. The authentication field, if all of it, may include at least one of the configurable lengths described above.

If part of the authentication field, another part of the authentication field may be in other fixed fields in the DCI of the second format. Optionally, the verification field includes a first part and a second part, where the first part includes the field with the configurable length, and the second part includes a fixed length field, the second part includes at least one of the following fields:

a Redundancy version field (Redundancy version);

a power control command field (TPC command for scheduled PUCCH) of a scheduling Physical Uplink Control Channel (PUCCH);

a physical uplink control channel resource indication field (PUCCH resource indicator);

sounding reference signal, SRS, request field (SRS request).

Thus, in the activation signaling DCI format 1_1 of DL SPS, at least one of the following fields, except for the scheduling information field, is a validation field:

a zero power channel state information reference signal trigger field (ZP CSI-RS trigger);

a Physical Uplink Control Channel (PUCCH) resource indication field (PUCCH resource indicator);

a sounding reference signal, SRS, request field (SRS request);

the code block group flushing information field (CBGFI) or the like as a whole is part of the verification field, which together with the redundancy version RV field of one or both codewords constitutes the verification field, the HPN field (or just a few LSB bits) is used to indicate the label of the activated configuration.

For example, a specific implementation of DCI 1_1 is as follows:

DCI format indication field (Identifier for DCI formats): 1bits activates the information field of the dispatching of the signalling, is used for DCI format recognition;

carrier indication field (Carrier indicator): 0 or 3bits, a scheduling information field of the activation signaling, for multi-carrier indication;

bandwidth part indication field (Bandwidth part indicator): a scheduling information field of 0,1 or 2bits activation signaling, for BWP indication;

frequency domain resource allocation field (Frequency domain resource assignment): a scheduling information field of the activation signaling for frequency domain resource allocation indication;

time domain resource allocation field (Time domain resource assignment): a scheduling information field of 0,1,2,3, or 4bits activation signaling, for time domain resource allocation indication;

virtual resource block to physical resource block (VRB-to-PRB) mapping field: 0 or 1bit, namely a scheduling information field of an activation signaling, which is used for indicating when the VRB is mapped to the PRB resource when the type 1 resource is allocated;

size indication field of physical resource block set (PRB bundling size indicator): a scheduling information field of a 0bit or 1bit activation signaling, which is used for supporting PRB bundling;

rate matching indication field (Rate matching indicator): a scheduling information field of the 0,1, or 2bits activation signaling, for indicating pattern of the RM;

zero power channel state information reference signal trigger field (ZP CSI-RS trigger): other fields of the 0,1, or 2bits activation signaling;

downlink configuration index field (Downlink assignment index): a 4bits or 2bits or 0bits activates a scheduling information field of the signaling for the DAI of the HARQ ACK;

PDSCH-to-HARQ feedback time indication field (PDSCH-to-HARQ feedback timing indicator): a scheduling information field of a 0,1,2, or 3bits activation signaling for feedback timing of HARQ ACK;

antenna port field (Antenna ports): 4,5, or 6bits activation signaling scheduling information field for antenna port indication;

demodulation reference signal DMRS sequence initialization field (DMRS sequence initialization): 1bit, activating a scheduling information field of the signaling, and initializing DMRS information;

for transport block 1(For transport block 1):

modulation and coding scheme field (Modulation and coding scheme): 5bits activates the dispatching information field of the signaling;

new data indicator field (New data indicator): an admission condition field of 1bit activation signaling;

redundancy version field (Redundancy version): 2bits activates the verification field of the signaling;

for transport block 2(For transport block 2):

hybrid automatic repeat request HARQ process number field (HARQ process number): 4bits activates the verification field of the signaling;

power control command field (TPC command for scheduled PUCCH) of scheduling physical uplink control channel PUCCH: 2bits activates other fields of the signaling;

physical uplink control channel resource indicator (PUCCH resource indicator): 3bits activate other fields of the signaling since there is PUCCH resource indicated in RRC;

sounding reference signal, SRS, request field (SRS request): 2bits activates other fields of the signaling;

transmission configuration indication field (Transmission configuration indication): other fields of the 0bit or 3bits activation signaling;

a coding block group transmission information field (CBG transmission information, CBGTI): 0,2,4,6, or 8bits activates other fields of the signaling;

code block group flush out information field (CBG flushing out information, CBGFI): other fields of the 0 or 1bit activation signaling;

padding field (padding), configurable length field for activation signaling.

In particular, some or all of the transmission configuration indication, CBGTI, CBGFI, padding bit fields may be used as the validation field if configured, i.e., the number of bits is greater than 0.

In an optional embodiment of the present invention, the uplink scheduling-free transmission activation signaling or the downlink semi-persistent transmission activation signaling is: when the new downlink control information DCI is used for the transmission of the ultra-reliable low-delay communication URLLC, the field with the configurable length comprises: at least one of the other fields except the scheduling information field.

Optionally, the other fields include: at least one of a transmission power control command field (TPC command) and a padding field (padding).

Optionally, when the other field includes multiple fields, the multiple fields may be taken as a whole, for example, when the field with configurable length includes a transmission power control command field and a padding field, the transmission power control command field and the padding field are taken as a whole.

In the new downlink control information DCI for the URLLC transmission in ultra-reliable low-latency communication, the following fields: a time domain offset field (timeDomainOffset), a time domain configuration field (timedomainassociation), a frequency domain configuration field (frequency domainassociation), an antenna port field (antenna port), a DMRS sequence initialization field (DMRS-seqiinientilation), a precoding and layer number field (precoding andnumber of layers), an SRS resource indication field (SRS-resource indicator), an MCS and transport block field (MCS and dtbs), a frequency hopping offset field (frequency hoppingoffset), a path loss reference index (pathlossreferencing index), etc. as scheduling information fields, other configurable bit length fields, such as a Padding field (Padding) field, a field of all configurable bit lengths, or a field of at least one configurable bit length, may be used for the verification field.

In the new downlink control information DCI (new URLLC DCI format) for the URLLC transmission for the ultra-reliable low-latency communication, the following fields are used as scheduling information fields, and other required information is obtained from RRC signaling, such as antenna ports and the like.

A New data indicator field (New data indicator) as an admission condition field for the activation signaling.

A hybrid automatic repeat request HARQ process number field (HARQ process number), reinterprete, and the corresponding information is an active configured index.

The following fields are used as fixed length fields for the authentication field: redundancy version, TPC command. Or may not be used as an authentication field.

Preferably, the new URLLC DCI format is configured according to the following table when the base station is used for uplink dynamic scheduling.

When a base station uses URLLC DCI Case 2 of new URLLC DCI format as an activation signaling, an indication field indicates DCI format identification, a Frequency-domain RA field indicates Frequency domain resource allocation, a Modulation and coding scheme field indicates MCS, and an HARQ process number field is used for indicating one of two configurations, wherein the 4 fields are used for counting 14 bits and used as a scheduling information field; a New data indicator field indicates NDI, one bit, as an admission condition field; the remaining two fields, i.e., the TPC command field and padding bits field, total 8bits, and as a whole, are verification fields.

When the terminal detects the new URLLC DCI format, in 23 bits, all bits, i.e. 8bits, outside the scheduling information field and the admission condition field are considered as a verification field as a whole, and after the verification is passed, according to the configuration information, the terminal obtains whether the DCI format identification, the frequency domain resource allocation, the MCS, and the activation are configured with the scheduling information in two configurations.

In the above examples, the name, meaning, bit length, number of fields, and the like of each field may vary from configuration to configuration. The table is as follows:

in an optional embodiment of the present invention, in step 12, the sending the activation signaling to the terminal may include:

step 121, loading the activation signaling in a Physical Downlink Control Channel (PDCCH), and scrambling the PDCCH by using a configuration scheduling radio-network temporary identity (RNTI) CS-RNTI;

and step 122, transmitting the scrambled PDCCH to the terminal.

In the foregoing embodiment of the present invention, optionally, the activation signaling includes default demodulation reference signal (DMRS) information or DMRS information configured through a higher layer signaling; the DMRS information includes a plurality of identical or different DMRSs, each DMRS corresponding to one of a plurality of data transmission configurations. That is, when Type 2 uplink non-scheduling activation signaling DCI 0_1 is used, or when DL SPS activation signaling DCI 1_1 is used, or when new URLLC DCI format is used, since there may be no DMRS information in the DCI, it is necessary to use default DMRS information or RRC-configured DMRS information. For multiple configurations, the default DMRS information or the RRC-configured DMRS information should include multiple different or the same DMRS information, and each DMRS information corresponds to one configuration in the multiple configurations.

The following describes a specific implementation process for the network device to send the activation signaling:

step 1, after a gNB (node B, such as a base station) establishes a connection with UE, the gNB performs semi-static configuration of Type 2 uplink scheduling-free transmission on the UE, and the configuration information includes: resource configuration cycle, Redundancy Version (RV), etc.; the gbb may also statically configure DL SPS downlink semi-persistent transmission.

Step 2, the gNB generates a first part of information of the activation signaling to obtain a scheduling information field, and for the CG, the scheduling information field includes fields for indicating time domain offset, time domain allocation, frequency domain allocation, antenna port, DMRS-seqiiniitiation (DMRS sequence initialization), precoding and other information, SRS-resource indicator (SRS resource indication), MCS andtbs (MCS and transport block), frequency hop offset, path loss reference index (pathloss referenceindex), and further includes a field for indicating an activation configuration index; for DL SPS, an indication of downlink transmission information format is included, and a field for indicating an active configuration index is also included.

And 3, the gNB generates second part information of the activation signaling, namely a verification field, and all configurable fields are set to be all 0 or all 1 to be used as part or all verification fields.

In DCI 0_1, at least one of the following fields is a validation field: a hybrid automatic repeat request HARQ process number field (HARQ process number), a Redundancy version field (Redundancy version), a power control command field (TPC command for scheduled PUSCH) for scheduling a physical uplink shared channel PUSCH, an uplink-shared channel indication field (UL-SCH indicator), a first downlink configuration index field (1st downlink assignment index), a first downlink allocation index field (2nd downlink assignment index), a sounding reference signal SRS request field (SRS request), a coding block transmission information field (CBG transmission information, CBGTI), a phase tracking reference signal-demodulation reference signal relationship field (PTRS-assignment), a _ offset indicator, and a padding field. The field of the configurable bit length includes a 1st DAI field, a 2nd DAI field, an SRS request field, a CBGTI field, a PTRS-DMRS association field, a beta _ offset indication field, and a padding bit field.

In DCI 1_1, at least one of the following fields serves as an authentication field: a hybrid automatic repeat request HARQ process number field (HARQ process number), a Redundancy version field (Redundancy version), a power control command field (TPC command for scheduled PUCCH) for scheduling a physical uplink control channel PUCCH, a physical uplink control channel resource indication field (PUCCH resource indicator), a Transmission configuration indication field (Transmission configuration indication), a sounding reference signal SRS request field (SRS request), a coding block Transmission information field (CBG Transmission information, CBGTI), a coding block group flush information field (CBG flushing out information, CBGFI), and a padding field (padding). The transmission configuration indication field, the CBGTI field, the CBGFI field and the protection bit field are fields with configurable bit length.

In the new URLLC DCI format, fields with configurable bit lengths other than the scheduling information field, such as Padding bits field, fields with all configurable bit lengths or fields with at least one configurable bit length, may be used for the validation field.

And step 4, the gNB sets the NDI field to be 0, and scrambles the PDCCH by using the CS-RNTI.

And step 5, the gNB sends the generated PDCCH for activating Type 2 uplink scheduling-free transmission or DL SPS downlink semi-persistent scheduling transmission.

In the above embodiments of the present invention, the fields with configurable bit lengths need to ensure that at least one field with configurable bit length is present in the DCI, that is, not all fields with configurable bit lengths are present.

The activation signaling comprises activation signaling of downlink semi-persistent transmission (DL SPS) and activation signaling of uplink configuration grant (configured grant) CG.

In the release (deactivation) signaling, all the configurable length fields may also be used as the validation field or a part of the validation field, and in addition, in order to distinguish the activation signaling from the release signaling, fixed length fields different from the activation signaling, such as the MCS field and the frequency domain resource allocation field, are also required to be set to be all set to '1', as a part of the validation field in the release signaling.

In the above embodiments of the present invention, in the activation signaling, at least one configurable bit length field is used as the authentication field or a part of the authentication field. Enough verification bits can be set in the activation signaling to ensure that the activation signaling false alarm is low enough, and meanwhile, the method does not increase the blind detection times of the PDCCH.

As shown in fig. 2, an embodiment of the present invention further provides a method for receiving signaling, which is applied to a terminal, and the method includes:

step 21, receiving an activation/deactivation signaling sent by a network device, where the activation/deactivation signaling is used to activate/deactivate one of multiple data transmission configurations, and at least a part of a verification field in the activation/deactivation signaling is: at least one configurable length field.

Optionally, the activation/deactivation signaling includes at least one of:

activating/deactivating signaling of uplink scheduling-free transmission;

and activating/deactivating signaling of downlink semi-persistent transmission.

a first downlink allocation index field (1st downlink allocation index);

a second downlink allocation index field (2nd downlink allocation index);

a sounding reference signal, SRS, request field (SRS request);

a code rate offset indication field (beta _ offset indicator);

padding field (padding).

high order bits (HARQ process number) of a hybrid automatic repeat request HARQ process number field;

a Redundancy version field (Redundancy version);

an uplink-shared channel UL-SCH indication field (UL-SCH indicator).

padding field (padding).

high bit (HARQ process number) of the hybrid automatic repeat request HARQ process number field;

a Redundancy version field (Redundancy version);

a sounding reference signal, SRS, request field.

When the field with the configurable length comprises a plurality of fields, the plurality of fields are integrated.

Optionally, the other fields include: at least one of a transmission power control command field (TPC command) and padding fields (padding bits).

Optionally, when the other fields include a transmission power control command field and a padding field, the transmission power control command field and the padding field are integrated.

Optionally, receiving an activation signaling sent by a network device includes: and receiving a Physical Downlink Control Channel (PDCCH) sent by network equipment, and descrambling the PDCCH by using a configuration scheduling radio-network temporary identifier (RNTI CS-RNTI) to obtain the activation signaling.

Optionally, the activation signaling includes default demodulation reference signal DMRS information or DMRS information configured through a high-layer signaling; the DMRS information includes a plurality of identical or different DMRSs, each DMRS corresponding to one of a plurality of data transmission configurations.

The following describes a specific implementation procedure for the terminal side to receive the activation signaling:

step 1, a terminal receives semi-static configuration information of scheduling-free transmission of Type 2 uplink; alternatively, the UE receives semi-persistent configuration information for DL SPS downlink semi-persistent scheduling transmission.

Step 2, the terminal receives the PDCCH, the CRC check bit uses CS-RNTI to descramble, the PDCCH demodulation and decoding are carried out, and after the CRC check is correct, whether the NDI field is set to be 0 or not is checked; after the above conditions are satisfied, the next step is continued.

And 3, the terminal further verifies the verification fields of the PDCCH according to the information of the activation signaling and verifies whether the values of all the configurable fields are preset values.

Step 4, after the terminal verifies that the activation signaling passes, for the CG, obtaining a scheduling information field of the Type 2 uplink scheduling-free activation signaling and label information of activation configuration; for DL SPS, an indication of downlink transmission information format is obtained, which also includes a field for indicating an active configuration index.

And step 5, the terminal sends MAC CE (media access control unit) information to confirm that the activation signaling is correctly received.

This embodiment of the present invention is a terminal side method corresponding to the method shown in fig. 1, and all solutions applied to the terminal side in the embodiment shown in fig. 1 are also applied to this embodiment, and the same technical effects can be achieved.

This embodiment also uses at least one configurable bit length field as the authentication field or part of the authentication field in the activation signaling. So that enough validation bits can be set to ensure that the activation signaling false alarm is low enough, and the method does not increase the number of blind tests of the PDCCH.

As shown in fig. 3, an embodiment of the present invention further provides a network device 30, including: a processor 32, a transceiver 31, and a memory 33, wherein the memory 33 stores programs executable by the processor 32, and the processor 32 implements the following when executing the programs: generating activation/deactivation signaling, wherein the activation/deactivation signaling is used for activating/deactivating one configuration of a plurality of data transmission configurations, and at least one part of a verification field in the activation/deactivation signaling is as follows: at least one field of configurable length; and sending the activation/deactivation signaling to the terminal.

Optionally, the activation/deactivation signaling includes at least one of:

activating/deactivating signaling of uplink scheduling-free transmission;

and activating/deactivating signaling of downlink semi-persistent transmission.

Optionally, the activation signaling of the uplink non-scheduling transmission is: when the first format downlink control information DCI is provided, the field with the configurable length includes at least one of the following fields:

a first downlink allocation index field (1st downlink allocation index);

a second downlink allocation index field (2nd downlink allocation index);

a sounding reference signal, SRS, request field (SRS request);

a code rate offset indication field (beta _ offset indicator);

padding field (padding).

hybrid automatic repeat request HARQ process number field (HARQ process number)

A Redundancy version field (Redundancy version);

an uplink-shared channel UL-SCH indication field (UL-SCH indicator).

Optionally, the activation signaling of the downlink semi-persistent transmission is: when the second format downlink control information DCI is provided, the field with the configurable length includes at least one of the following fields:

padding field (padding).

hybrid automatic repeat request HARQ process number field (HARQ process number)

A Redundancy version field (Redundancy version);

sounding reference signal, SRS, Request field (SRS Request).

Optionally, sending the activation signaling to the terminal includes:

the activation signaling is loaded in a Physical Downlink Control Channel (PDCCH), and the PDCCH is scrambled by using a configuration scheduling radio-network temporary identifier (RNTI) CS-RNTI;

and transmitting the scrambled PDCCH to a terminal.

Optionally, the activation signaling includes default demodulation reference signal DMRS information or demodulation reference signal DMRS information configured by a high-level signaling; the DMRS information includes a plurality of identical or different DMRSs, each DMRS corresponding to one of a plurality of data transmission configurations.

It should be noted that, the specific implementation manner of the embodiment shown in fig. 1 is also applicable to the embodiment of the network device, and the same technical effect can be achieved. In the network device, the transceiver 31 and the memory 33, and the transceiver 31 and the processor 32 may be communicatively connected through a bus interface, the function of the processor 32 may also be implemented by the transceiver 31, and the function of the transceiver 31 may also be implemented by the processor 32.

As shown in fig. 4, an embodiment of the present invention further provides a signaling sending apparatus 40, including:

a processing module 42, configured to generate activation signaling, where the activation/deactivation signaling is used to activate/deactivate one of a plurality of data transmission configurations, and at least a part of a verification field in the activation/deactivation signaling is: at least one field of configurable length;

a transceiver module 41, configured to send the activation/deactivation signaling to the terminal.

Optionally, the activation/deactivation signaling includes at least one of:

activating/deactivating signaling of uplink scheduling-free transmission;

and activating/deactivating signaling of downlink semi-persistent transmission.

a first downlink allocation index field (1st downlink allocation index);

a second downlink allocation index field (2nd downlink allocation index);

a sounding reference signal, SRS, request field (SRS request);

a code rate offset indication field (beta _ offset indicator);

padding field (padding).

hybrid automatic repeat request HARQ process number field (HARQ process number)

A Redundancy version field (Redundancy version);

an uplink-shared channel UL-SCH indication field (UL-SCH indicator).

padding field (padding).

hybrid automatic repeat request HARQ process number field (HARQ process number)

A Redundancy version field (Redundancy version);

sounding reference signal, SRS, Request field (SRS Request).

Optionally, sending the activation signaling to the terminal includes:

and transmitting the scrambled PDCCH to a terminal.

It should be noted that, the specific implementation manner of the embodiment shown in fig. 1 is also applicable to the embodiment of the network device, and the same technical effect can be achieved.

As shown in fig. 5, an embodiment of the present invention further provides a terminal 50, including: a processor 52, a transceiver 51, and a memory 53, wherein the memory 53 stores programs executable by the processor 52, and the processor 52 implements the following when executing the programs: receiving activation/deactivation signaling sent by a network device, wherein the activation/deactivation signaling is used for activating/deactivating one configuration of multiple data transmission configurations, and at least one part of a verification field in the activation/deactivation signaling is as follows: at least one configurable length field.

Optionally, the activation/deactivation signaling includes at least one of:

activating/deactivating signaling of uplink scheduling-free transmission;

and activating/deactivating signaling of downlink semi-persistent transmission.

Optionally, the activation signaling/deactivation includes at least one of:

activating/deactivating signaling of uplink scheduling-free transmission;

and activating/deactivating signaling of downlink semi-persistent transmission.

a first downlink allocation index field;

a second downlink allocation index field;

a sounding reference signal, SRS, request field;

a coding block group transmission information field;

a code rate offset indication field;

and filling the field.

high-order bit of HARQ process number field;

a redundancy version field;

an uplink-shared channel UL-SCH indication field.

a transmission configuration indication field;

a coding block group transmission information field;

the information field is flushed by the coding code block group;

and filling the field.

high bit of HARQ process number field;

a redundancy version field;

a physical uplink control channel resource indication field;

a sounding reference signal, SRS, request field.

Optionally, the other fields include: at least one of a transmission power control command field (TPC command) and padding bits.

Optionally, receiving an activation signaling sent by a network device includes:

and receiving a Physical Downlink Control Channel (PDCCH) sent by network equipment, and descrambling the PDCCH by using a configuration scheduling radio-network temporary identifier (RNTI CS-RNTI) to obtain the activation signaling.

It should be noted that, the specific implementation manner of the embodiment shown in fig. 2 is also applicable to the embodiment of the terminal, and the same technical effect can be achieved. In the terminal, the transceiver 51 and the memory 53, and the transceiver 51 and the processor 52 may be communicatively connected through a bus interface, and the function of the processor 52 may also be implemented by the transceiver 51, and the function of the transceiver 51 may also be implemented by the processor 52.

As shown in fig. 6, an embodiment of the present invention further provides a signaling receiving apparatus 60, including:

a transceiver module 61, configured to receive an activation/deactivation signaling sent by a network device, where the activation/deactivation signaling is used to activate/deactivate one of multiple data transmission configurations, and at least a part of a verification field in the activation/deactivation signaling is: at least one configurable length field.

Optionally, the activation/deactivation signaling includes at least one of:

activating/deactivating signaling of uplink scheduling-free transmission;

and activating/deactivating signaling of downlink semi-persistent transmission.

Optionally, the activation signaling/deactivation includes at least one of:

activating/deactivating signaling of uplink scheduling-free transmission;

and activating/deactivating signaling of downlink semi-persistent transmission.

a first downlink allocation index field;

a second downlink allocation index field;

a sounding reference signal, SRS, request field;

a coding block group transmission information field;

a code rate offset indication field;

and filling the field.

high-order bit of HARQ process number field;

a redundancy version field;

an uplink-shared channel UL-SCH indication field.

a transmission configuration indication field;

a coding block group transmission information field;

the information field is flushed by the coding code block group;

and filling the field.

high bit of HARQ process number field;

a redundancy version field;

a physical uplink control channel resource indication field;

a sounding reference signal, SRS, request field.

It should be noted that the specific implementation manner of the embodiment shown in fig. 2 is also applicable to the embodiment of the apparatus, and the same technical effect can be achieved. The apparatus may further comprise a processing module 62 or the like for processing the information received by the transceiving module 61 or the like.

Embodiments of the present invention also provide a computer storage medium including instructions that, when executed on a computer, cause the computer to perform the method described above with respect to fig. 1 or fig. 2. All the implementation manners in the above embodiments are applicable to the embodiment, and the same technical effects can be achieved.

The above-described embodiments of the present invention use at least one configurable bit length field as the authentication field or a part of the authentication field in the activation signaling. So that enough validation bits can be set in the activation signaling to ensure that the activation signaling false alarm is low enough, and the method does not increase the number of blind tests of the PDCCH.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

Furthermore, it is to be noted that in the device and method of the invention, it is obvious that the individual components or steps can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of performing the series of processes described above may naturally be performed chronologically in the order described, but need not necessarily be performed chronologically, and some steps may be performed in parallel or independently of each other. It will be understood by those skilled in the art that all or any of the steps or elements of the method and apparatus of the present invention may be implemented in any computing device (including processors, storage media, etc.) or network of computing devices, in hardware, firmware, software, or any combination thereof, which can be implemented by those skilled in the art using their basic programming skills after reading the description of the present invention.

Thus, the objects of the invention may also be achieved by running a program or a set of programs on any computing device. The computing device may be a general purpose device as is well known. The object of the invention is thus also achieved solely by providing a program product comprising program code for implementing the method or the apparatus. That is, such a program product also constitutes the present invention, and a storage medium storing such a program product also constitutes the present invention. It is to be understood that the storage medium may be any known storage medium or any storage medium developed in the future. It is further noted that in the apparatus and method of the present invention, it is apparent that each component or step can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of executing the series of processes described above may naturally be executed chronologically in the order described, but need not necessarily be executed chronologically. Some steps may be performed in parallel or independently of each other.

While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.

Claims

1. A method for sending signaling, applied to a network device, the method comprising:

and sending the activation/deactivation signaling to the terminal.

2. The method of claim 1, wherein the activation/deactivation signaling comprises at least one of:

activating/deactivating signaling of uplink scheduling-free transmission;

and activating/deactivating signaling of downlink semi-persistent transmission.

3. The method according to claim 2, wherein the activation signaling for the uplink non-scheduled transmission is: when the downlink control information DCI of the first format is used, the field with the configurable length includes at least one of the following fields:

a first downlink allocation index field;

a second downlink allocation index field;

a sounding reference signal, SRS, request field;

a coding block group transmission information field;

a code rate offset indication field;

a padding bit field.

4. The method according to claim 3, wherein the verification field comprises a first part and a second part, the first part comprises the configurable length field, and when the second part comprises a fixed length field, the second part comprises at least one of the following fields:

high-order bit of HARQ process number field;

a redundancy version field;

an uplink-shared channel UL-SCH indication field.

5. The signaling sending method according to claim 2, wherein the activation signaling of the downlink semi-persistent transmission is: when the downlink control information DCI of the second format is used, the field with the configurable length includes at least one of the following fields:

a transmission configuration indication field;

a coding block group transmission information field;

the information field is flushed by the coding code block group;

a padding bit field.

6. The method according to claim 5, wherein the verification field comprises a first part and a second part, the first part comprises the configurable-length field, and when the second part comprises a fixed-length field, the second part comprises at least one of the following fields:

high bit of HARQ process number field;

a redundancy version field;

a physical uplink control channel resource indication field;

a sounding reference signal, SRS, request field.

7. The signaling sending method according to claim 2, wherein the uplink scheduling-free transmission activation signaling or the downlink semi-persistent transmission activation signaling is: when the new downlink control information DCI is used for the transmission of the ultra-reliable low-delay communication URLLC, the field with the configurable length comprises: at least one of the other fields except the scheduling information field.

8. The method of claim 7, wherein when the field with the configurable length comprises a plurality of fields, the plurality of fields are integrated.

9. A method for receiving signaling, applied to a terminal, the method comprising:

10. The method for receiving signaling according to claim 9, wherein the activation signaling/deactivation includes at least one of:

activating/deactivating signaling of uplink scheduling-free transmission;

and activating/deactivating signaling of downlink semi-persistent transmission.

11. The method for receiving signaling according to claim 10, wherein the activation signaling for uplink non-scheduled transmission is: when the downlink control information DCI of the first format is used, the field with the configurable length includes at least one of the following fields:

a first downlink allocation index field;

a second downlink allocation index field;

a sounding reference signal, SRS, request field;

a coding block group transmission information field;

a code rate offset indication field;

and filling the field.

12. The method of receiving signaling according to claim 11, wherein the authentication field comprises a first part and a second part, wherein the first part comprises the field with the configurable length, and when the second part comprises a fixed length field, the second part comprises at least one of the following fields:

high-order bit of HARQ process number field;

a redundancy version field;

an uplink-shared channel UL-SCH indication field.

13. The method for receiving signaling according to claim 10, wherein the activation signaling for downlink semi-persistent transmission is: when the downlink control information DCI of the second format is used, the field with the configurable length includes at least one of the following fields:

a transmission configuration indication field;

a coding block group transmission information field;

the information field is flushed by the coding code block group;

and filling the field.

14. The method of receiving signaling according to claim 13, wherein the authentication field comprises a first part and a second part, wherein the first part comprises the configurable length field, and wherein when the second part comprises a fixed length field, the second part comprises at least one of:

high bit of HARQ process number field;

a redundancy version field;

a physical uplink control channel resource indication field;

a sounding reference signal, SRS, request field.

15. The method for receiving signaling according to claim 10, wherein the activation signaling for uplink non-scheduled transmission or the activation signaling for downlink semi-persistent transmission is: when the new downlink control information DCI is used for the transmission of the ultra-reliable low-delay communication URLLC, the field with the configurable length comprises: at least one of the other fields except the scheduling information field.

16. The method for receiving signaling according to claim 15, wherein when the field with configurable length comprises a plurality of fields, the plurality of fields are integrated.

17. A network device, comprising: a processor, a transceiver, and a memory, wherein the memory stores a program executable by the processor, and the processor implements the following when executing the program: generating activation/deactivation signaling, wherein the activation/deactivation signaling is used for activating/deactivating one configuration of a plurality of data transmission configurations, and at least one part of a verification field in the activation/deactivation signaling is as follows: at least one field of configurable length; and sending the activation/deactivation signaling to the terminal.

18. An apparatus for transmitting signaling, comprising:

19. A terminal, comprising: a processor, a transceiver, and a memory, wherein the memory stores a program executable by the processor, and the processor implements the following when executing the program: receiving activation/deactivation signaling sent by a network device, wherein the activation/deactivation signaling is used for activating/deactivating one configuration of multiple data transmission configurations, and at least one part of a verification field in the activation/deactivation signaling is as follows: at least one configurable length field.

20. An apparatus for receiving signaling, comprising:

21. A computer storage medium comprising instructions which, when executed on a computer, cause the computer to perform the method of any of claims 1 to 8, or the method of any of claims 9 to 16.