CN109391346B

CN109391346B - Method and device used in user equipment and base station for wireless communication

Info

Publication number: CN109391346B
Application number: CN201710664771.4A
Authority: CN
Inventors: 蒋琦
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2017-08-07
Filing date: 2017-08-07
Publication date: 2021-05-28
Anticipated expiration: 2037-08-07
Also published as: CN112953697B; CN112953697A; CN109391346A; CN112953696A

Abstract

The application discloses a method and a device in a user equipment, a base station and the like used for wireless communication. The user equipment receives a first signaling, then receives a second signaling, and then respectively operates a first wireless signal and a second wireless signal in a first time-frequency resource; the first wireless signal and the second wireless signal occupy a first set of resource units and a second set of resource units, respectively; the first signaling is used to determine whether the second signaling includes a first field used to determine whether a target set of resource units belongs to the first set of resource units or the second set of resource units. The first domain and the target resource unit are designed to be associated, so that when the system configures the auxiliary demodulation reference signal, the user equipment does not introduce extra blind decoding overhead of control signaling due to the configuration of the auxiliary demodulation reference signal, the complexity of the user equipment is reduced, and the overall performance of the system is improved.

Description

Method and device used in user equipment and base station for wireless communication

Technical Field

The present application relates to a transmission method and apparatus in a wireless communication system, and more particularly, to a transmission method and apparatus of a wireless signal supporting high-speed mobile communication.

Background

Large-scale (Massive) MIMO (Multi-Input Multi-Output) is a research hotspot for next-generation mobile communication. In massive MIMO, multiple antennas form a narrower beam to point to a specific direction through beamforming to improve communication quality, and high-speed movement will be a scene to be discussed in massive MIMO and future 5G communication.

In 3GPP (3rd generation partner Project) new air interface discussion, most companies have a common understanding that the density of the existing DMRS cannot guarantee transmission performance for high-speed mobile or other scenarios with degraded wireless channel conditions, especially in scenarios with large-scale MIMO introduction. Further, in the 3GGP discussion, on the premise of reserving a conventional DMRS (Demodulation Reference Signal), an auxiliary (Additional) DMRS is introduced to further improve the performance of channel estimation and Demodulation, and accordingly, a new design related to the auxiliary DMRS needs to be introduced.

Disclosure of Invention

The inventor finds out through research that one problem is that when an auxiliary DMRS is introduced, in order to ensure the flexibility of configuration of the auxiliary DMRS, a direct way is to introduce a new bit into DCI (Downlink Control Information) to indicate whether the auxiliary DMRS exists and a configuration way; however, this approach increases the Payload Size (Payload Size) of the DCI. In the existing LTE system, the maximum Blind Decoding (Blind Decoding) times of a UE (User Equipment) is related to the number of different load sizes simultaneously supported by the UE. The above-mentioned way of increasing the DCI payload size will directly increase the complexity of the UE.

In view of the above design, the present application discloses a solution. Without conflict, embodiments and features in embodiments in the user equipment of the present application may be applied to the base station and vice versa. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

The application discloses a method used in a user equipment for wireless communication, which is characterized by comprising the following steps:

-receiving a first signaling;

-receiving second signaling;

-operating the first radio signal and the second radio signal separately in the first time-frequency resource;

wherein the first wireless signal and the second wireless signal occupy a first set of resource elements and a second set of resource elements, respectively; the first signaling is used to determine whether the second signaling includes a first field used to determine whether a target set of resource units belongs to the first set of resource units or the second set of resource units; assuming that the first time-frequency resource includes reference signals sent by K antenna ports, and a set of resource units occupied by the reference signals sent by the K antenna ports in the first time-frequency resource includes all resource units in the target resource unit set; the operation is receiving or the operation is transmitting; the K is a positive integer.

As an example, the above method has the benefits of: by designing the first signaling, the first signaling is used for determining whether the second signaling contains a first domain, thereby realizing whether the second signaling can indicate auxiliary DMRS through the first signaling configuration; because different DCI formats correspond to different transmission schemes, and all existing DCI formats (formats) cannot support the indication of the auxiliary DMRS, the method effectively limits the number of the DCI formats supporting the auxiliary DMRS, and avoids overhigh blind decoding complexity caused by detecting excessive DCI formats when the user equipment adopts the auxiliary DMRS to carry out data transmission.

According to one aspect of the present application, the above method is characterized in that the second signaling is used to determine a modulation coding state of the first wireless signal; if the second signaling includes the first field, the modulation coding state of the first wireless signal is one of K1 candidates, otherwise the modulation coding state of the first wireless signal is one of K2 candidates; the K1 and the K2 are each positive integers, the K1 being less than the K2.

As an example, the above method has the benefits of: establishing a relation between a field for indicating Modulation and Coding Status (MCS) in the DCI and the first field, wherein when the second signaling includes the first field, the selectable MCS type of the corresponding data transmission is reduced, and further, a bit saved from indicating MCS is used as the first field; the above method introduces the functionality of the first domain without increasing the size of the load.

As an embodiment, the principle of the above method is that: when the UE needs to configure the auxiliary DMRS for data transmission, the UE is often in a scenario where the channel condition is not good, such as a high-speed mobile scenario, and then the UE does not transmit data in an MCS with a higher code rate and a higher modulation order, and a part of bits originally used for indicating the MCS may be used for indicating the first domain.

According to one aspect of the present application, the above method is characterized in that the small-scale channel parameters experienced by the second wireless signal are used to determine the small-scale channel parameters experienced by the first wireless signal.

As an embodiment, the above method is characterized in that: the second wireless signal is an auxiliary DMRS, the first wireless signal is data, and the second wireless signal is used for channel estimation and demodulation of the first wireless signal.

According to one aspect of the application, the method described above is characterized by comprising:

-blindly decoding the second signaling for N signaling formats, respectively;

wherein the N signaling formats correspond to N payload sizes, respectively, the first signaling includes N sub-signaling, and the N sub-signaling is used to determine whether the second signaling for the N signaling formats includes the first field, respectively.

As an example, the above method has the benefits of: by designing the N sub-signaling, whether the N signaling formats independently include the configuration of the first domain or not is achieved, and the DCI format which needs to support the auxiliary DMRS is flexibly configured in the plurality of DCI formats.

The application discloses a method used in a base station for wireless communication, which is characterized by comprising the following steps:

-transmitting first signalling;

-transmitting second signaling;

-performing the first radio signal and the second radio signal separately in the first time-frequency resource;

wherein the first wireless signal and the second wireless signal occupy a first set of resource elements and a second set of resource elements, respectively; the first signaling is used to determine whether the second signaling includes a first field used to determine whether a target set of resource units belongs to the first set of resource units or the second set of resource units; assuming that the first time-frequency resource includes reference signals sent by K antenna ports, and a set of resource units occupied by the reference signals sent by the K antenna ports in the first time-frequency resource includes all resource units in the target resource unit set; the performing is transmitting or the performing is receiving; the K is a positive integer.

-generating said second signalling according to one of N signalling formats;

wherein the N signaling formats correspond to N payload sizes, respectively, the first signaling includes N sub-signaling, and the N sub-signaling is used to determine whether the second signaling for the N signaling formats includes the first field, respectively; the receiver of the second signaling comprises a first user equipment that blindly decodes the second signaling for the N signaling formats, respectively.

The application discloses a user equipment used for wireless communication, characterized by comprising:

-a first receiver module receiving first signaling;

-a second receiver module receiving second signaling;

-a first transceiver module operating first and second radio signals, respectively, in a first time-frequency resource;

As an embodiment, the above user equipment for wireless communication is characterized in that the second signaling is used for determining a modulation coding state of the first wireless signal; if the second signaling includes the first field, the modulation coding state of the first wireless signal is one of K1 candidates, otherwise the modulation coding state of the first wireless signal is one of K2 candidates; the K1 and the K2 are each positive integers, the K1 being less than the K2.

As an embodiment, the above user equipment for wireless communication is characterized in that the small scale channel parameter experienced by the second radio signal is used for determining the small scale channel parameter experienced by the first radio signal.

As an embodiment, the user equipment used for wireless communication is characterized in that the second receiver module blindly decodes the second signaling for N signaling formats respectively; the N signaling formats correspond to N payload sizes, respectively, the first signaling includes N sub-signaling, and the N sub-signaling is used to determine whether the second signaling for the N signaling formats includes the first field, respectively.

The application discloses a base station device used for wireless communication, characterized by comprising:

-a first transmitter module to transmit first signaling;

-a second transmitter module for transmitting second signaling;

-a second transceiver module for performing the first and second radio signals, respectively, in the first time-frequency resource;

As an embodiment, the above base station apparatus for wireless communication is characterized in that the second signaling is used to determine a modulation coding state of the first wireless signal; if the second signaling includes the first field, the modulation coding state of the first wireless signal is one of K1 candidates, otherwise the modulation coding state of the first wireless signal is one of K2 candidates; the K1 and the K2 are each positive integers, the K1 being less than the K2.

As an embodiment, the above base station apparatus for wireless communication is characterized in that the small scale channel parameter experienced by the second wireless signal is used to determine the small scale channel parameter experienced by the first wireless signal.

As an embodiment, the above base station device for wireless communication is characterized in that the second transmitter module generates the second signaling according to one of N signaling formats; the N signaling formats correspond to N payload sizes, respectively, the first signaling includes N sub-signaling, and the N sub-signaling is used to determine whether the second signaling for the N signaling formats includes the first field, respectively; the receiver of the second signaling comprises a first user equipment that blindly decodes the second signaling for the N signaling formats, respectively.

As an example, compared with the conventional scheme, the method has the following advantages:

by designing the first signaling, the first signaling is used to determine whether the second signaling contains a first domain, thereby enabling configuring whether the second signaling can indicate an auxiliary DMRS through the first signaling; because different DCI formats correspond to different transmission schemes, and all existing DCI formats (formats) cannot support the indication of the auxiliary DMRS, the method effectively limits the number of the DCI formats supporting the auxiliary DMRS, and avoids overhigh blind decoding complexity caused by detecting excessive DCI formats when the user equipment adopts the auxiliary DMRS to carry out data transmission.

Associating the field indicating MCS in the DCI with the first field, wherein when the second signaling includes the first field, the optional MCS type for the corresponding data transmission is reduced, and the bits saved from the indicated MCS are used as the first field; the above method introduces the functionality of the first domain without increasing the size of the load.

By designing the N sub-signaling, whether the N signaling formats independently include the configuration of the first domain is achieved, and then the DCI formats that support the auxiliary DMRS are flexibly configured among the multiple DCI formats, thereby effectively reducing the blind decoding complexity of the UE.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof with reference to the accompanying drawings in which:

fig. 1 shows a flow diagram of first signaling and second signaling according to an embodiment of the application;

FIG. 2 shows a schematic diagram of a network architecture according to an embodiment of the present application;

figure 3 shows a schematic diagram of an embodiment of a radio protocol architecture for the user plane and the control plane according to an embodiment of the present application;

figure 4 shows a schematic diagram of an evolved node and a UE according to an embodiment of the present application;

FIG. 5 shows a flow diagram of a first wireless signal and a second wireless signal according to one embodiment of the present application;

FIG. 6 shows a flow diagram of a first wireless signal and a second wireless signal according to another embodiment of the present application;

FIG. 7 shows a schematic diagram of a target set of resource units, according to an embodiment of the present application;

figure 8 shows a schematic diagram of second signaling according to an embodiment of the present application;

figure 9 shows a schematic diagram of second signaling according to another embodiment of the present application;

fig. 10 shows a block diagram of a processing device for use in a user equipment according to an embodiment of the present application;

fig. 11 shows a block diagram of a processing device for use in a base station according to an embodiment of the present application.

Detailed Description

The technical solutions of the present application will be further described in detail with reference to the accompanying drawings, and it should be noted that the embodiments and features of the embodiments of the present application can be arbitrarily combined with each other without conflict.

Example 1

Embodiment 1 illustrates a flow chart of the first signaling and the second signaling, as shown in fig. 1.

In embodiment 1, the ue in this application first receives a first signaling, then receives a second signaling, and then respectively operates a first radio signal and a second radio signal in a first time-frequency resource; the first wireless signal and the second wireless signal occupy a first set of resource units and a second set of resource units, respectively; the first signaling is used to determine whether the second signaling includes a first field used to determine whether a target set of resource units belongs to the first set of resource units or the second set of resource units; assuming that the first time-frequency resource includes reference signals sent by K antenna ports, and a set of resource units occupied by the reference signals sent by the K antenna ports in the first time-frequency resource includes all resource units in the target resource unit set; the operation is receiving or the operation is transmitting; the K is a positive integer.

As a sub-embodiment, the first signaling is higher layer signaling and the second signaling is physical layer signaling.

As a sub-embodiment, the first signaling is semi-statically configured and the second signaling is dynamically configured.

As a sub-embodiment, the first signaling is RRC (Radio Resource Control) signaling.

As a sub-embodiment, the second signaling is a DCI.

As a sub-embodiment, the transmission channel corresponding to the first wireless signal is a shared channel.

As an additional embodiment of this sub-embodiment, the operation is receiving and the Shared Channel is DL-SCH (Downlink Shared Channel).

As an additional embodiment of this sub-embodiment, the operation is transmission, and the Shared Channel is UL-SCH (Uplink Shared Channel).

As a sub-embodiment, the operation is reception, and the first set of resource elements is used for transmission of { PDSCH (Physical Downlink Shared Channel), SPDSCH (Short Latency PDSCH), NR-PDSCH (New RAT PDSCH, New radio access technology Physical Downlink Shared Channel }.

As a sub-embodiment, the operation is transmitting, and the first set of resource elements is used for transmission of PUSCH (Physical Uplink Shared Channel), SPUSCH (Short Latency PUSCH), NR-PUSCH (New RAT PUSCH, New radio access technology Physical Uplink Shared Channel).

As a sub-embodiment, the second set of resource elements is used for transmission of DMRS.

As a sub-embodiment, the first zone comprises a first sub-zone used to determine whether the target set of resource units belongs to the first set of resource units or the second set of resource units.

As an additional embodiment of this sub-embodiment, the first sub-field equals bit 0, the target set of resource units belongs to the first set of resource units; the first subzone is equal to bit 1, and the target set of resource units belongs to the second set of resource units.

As an additional embodiment of this sub-embodiment, the first subzone is used to determine a transmit power of a wireless signal transmitted on the set of target resource units.

As a sub-embodiment, the second signaling comprises a first bit block, and the second signaling corresponds to a first DCI format, the number of bits in the first bit block is equal to M1, and the target set of resource units belongs to the first set of resource units; the number of bits in the first bit block is equal to M2 and the target set of resource units belongs to the second set of resource units; the M2 and the M1 are both positive integers, the M2 is greater than the M1.

As an additional embodiment of this sub-embodiment, the number of bits in the first bit block corresponds to a payload size of the first DCI format, the payload size being one of { M1, M2 }.

As an additional embodiment of this sub-embodiment, the number of bits in the first bit block is equal to M2, and (M2-M1) of the M2 bits are the first field.

As a sub-embodiment, the second set of resource elements is used only for transmission of a preamble Loaded DMRS.

As a sub-embodiment, the second set of resource elements is used for transmission of both a preamble Loaded DMRS and a secondary DMRS.

As a sub-embodiment, the target set of resource elements is used to assist in the transmission of the DMRS, or is used for the transmission of a data channel.

As a sub-embodiment, the modulation Coding state in this application is mcs (modulation and Coding status).

As a sub-embodiment, the second signaling is used to determine at least the former of { the first time-frequency resource, configuration information for the first wireless signal }, the configuration information comprising at least one of { modulation coding status, new data indication, redundancy version, hybrid automatic repeat request process number }.

As an auxiliary embodiment of this sub-embodiment, the new Data indication is ndi (new Data indicator), the redundancy version is rv (redundancy version), and the hybrid Automatic Repeat request process number is harq (hybrid Automatic Repeat request) process number.

As a sub-embodiment, the operation is receiving, and the second signaling is a downlink Grant (Grant).

As a sub-embodiment, the operation is sending, and the second signaling is an uplink Grant (Grant).

As a sub-embodiment, the first set of resource elements and the second set of resource elements are orthogonal.

As a sub-embodiment, the first time-frequency resource occupies a positive integer number of time-frequency resource blocks.

As an auxiliary embodiment of the sub-embodiment, the time-frequency Resource block occupies a positive integer number of REs (Resource elements).

As a subsidiary embodiment of the sub-embodiment, the time-frequency resource block occupies 12 continuous sub-carriers in the frequency domain, and occupies a first time window in the time domain, and the duration of the first time window in the time domain is one of { one Slot (Slot), one sub-frame (Subframe), M multi-carrier symbols }; and M is a positive integer.

As an example of this subsidiary embodiment, said M is equal to one of {7,14 }.

As a sub-embodiment, the number of resource units occupied by the reference signals transmitted by the K antenna ports in the first time-frequency resource is related to K.

As a sub-embodiment, a Pattern (Pattern) of resource units occupied by the reference signals sent by the K antenna ports in the time-frequency resource block in the present application is related to K.

As a sub-embodiment, the reference signals transmitted by the K antenna ports are used for channel estimation and demodulation of data.

As a sub-embodiment, the reference signals transmitted by the K antenna ports are demodulation reference signals.

As a sub-embodiment, the resource unit in this application is an RE.

As a sub-embodiment, the resource unit in the present application occupies one subcarrier in the frequency domain and one multicarrier symbol in the time domain.

As a sub-embodiment, the Multi-Carrier symbol in the present application is one of { OFDM (Orthogonal Frequency Division Multiplexing) symbol, SC-FDMA (Single-Carrier Frequency Division Multiplexing Access) symbol, FBMC (Filter Bank Multi-Carrier) symbol, OFDM symbol including CP (Cyclic Prefix), DFT-s-OFDM (Discrete Fourier Transform Spreading Orthogonal Frequency Division Multiplexing) symbol including CP }.

As a sub-embodiment, the resource unit set in the present application occupies a positive integer number of resource units.

Example 2

Embodiment 2 illustrates a schematic diagram of a network architecture, as shown in fig. 2.

Embodiment 2 illustrates a schematic diagram of a network architecture according to the present application, as shown in fig. 2. Fig. 2 is a diagram illustrating a network architecture 200 of NR 5G, LTE (Long-Term Evolution) and LTE-a (Long-Term Evolution Advanced) systems. The NR 5G or LTE network architecture 200 may be referred to as EPS (Evolved Packet System) 200 or some other suitable terminology. The EPS 200 may include one or more UEs (User Equipment) 201, NG-RANs (next generation radio access networks) 202, EPCs (Evolved Packet cores)/5G-CNs (5G-Core networks) 210, HSS (Home Subscriber Server) 220, and internet services 230. The EPS may interconnect with other access networks, but these entities/interfaces are not shown for simplicity. As shown, the EPS provides packet-switched services, however those skilled in the art will readily appreciate that the various concepts presented throughout this application may be extended to networks providing circuit-switched services or other cellular networks. The NG-RAN includes NR node b (gNB)203 and other gnbs 204. The gNB203 provides user and control plane protocol termination towards the UE 201. The gnbs 203 may be connected to other gnbs 204 via an Xn interface (e.g., backhaul). The gNB203 may also be referred to as a base station, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a Basic Service Set (BSS), an Extended Service Set (ESS), a TRP (point of transmission reception), or some other suitable terminology. The gNB203 provides an access point for the UE201 to the EPC/5G-CN 210. Examples of the UE201 include a cellular phone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop, a Personal Digital Assistant (PDA), a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., MP3 player), a camera, a gaming console, a drone, an aircraft, a narrowband physical network device, a machine type communication device, a land vehicle, an automobile, a wearable device, or any other similar functioning device. Those skilled in the art may also refer to UE201 as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology. The gNB203 connects to the EPC/5G-CN210 through the S1/NG interface. The EPC/5G-CN210 includes MME/AMF/UPF211, other MME (Mobility Management Entity)/AMF (Authentication Management Domain)/UPF (User Plane Function) 214, S-GW (Service Gateway) 212, and P-GW (Packet data Network Gateway) 213. MME/AMF/UPF211 is a control node that handles signaling between UE201 and EPC/5G-CN 210. In general, the MME/AMF/UPF211 provides bearer and connection management. All user IP (Internet protocol) packets are transmitted through S-GW212, and S-GW212 itself is connected to P-GW 213. The P-GW213 provides UE IP address allocation as well as other functions. The P-GW213 is connected to the internet service 230. The internet service 230 includes an operator-corresponding internet protocol service, and may specifically include the internet, an intranet, an IMS (IP Multimedia Subsystem), and a PS streaming service (PSs).

As a sub-embodiment, the UE201 corresponds to the UE in the present application.

As a sub-embodiment, the gNB203 corresponds to the base station in this application.

As a sub-embodiment, the UE201 supports high speed mobility.

As a sub-embodiment, the UE201 supports high frequency communication.

As a sub-embodiment, the gNB203 supports providing services for high-speed mobile user equipments.

As a sub-embodiment, the gNB203 supports high frequency communications.

Example 3

Embodiment 3 shows a schematic diagram of an embodiment of a radio protocol architecture for the user plane and the control plane according to the present application, as shown in fig. 3.

Fig. 3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for the user plane and the control plane, fig. 3 showing the radio protocol architecture for the User Equipment (UE) and the base station equipment (gNB or eNB) in three layers: layer 1, layer 2 and layer 3. Layer 1(L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be referred to herein as PHY 301. Layer 2(L2 layer) 305 is above PHY301 and is responsible for the link between the UE and the gNB through PHY 301. In the user plane, the L2 layer 305 includes a MAC (Medium Access Control) sublayer 302, an RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the gNB on the network side. Although not shown, the UE may have several upper layers above the L2 layer 305, including a network layer (e.g., IP layer) that terminates at the P-GW on the network side and an application layer that terminates at the other end of the connection (e.g., far end UE, server, etc.). The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. The PDCP sublayer 304 also provides header compression for upper layer data packets to reduce radio transmission overhead, security by ciphering the data packets, and handover support for UEs between gnbs. The RLC sublayer 303 provides segmentation and reassembly of upper layer packets, retransmission of lost packets, and reordering of packets to compensate for out-of-order reception due to HARQ. The MAC sublayer 302 provides multiplexing between logical and transport channels. The MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) in one cell among the UEs. The MAC sublayer 302 is also responsible for HARQ operations. In the control plane, the radio protocol architecture for the UE and the gNB is substantially the same for the physical layer 301 and the L2 layer 305, but without the header compression function for the control plane. The Control plane also includes an RRC (Radio Resource Control) sublayer 306 in layer 3 (layer L3). The RRC sublayer 306 is responsible for obtaining radio resources (i.e., radio bearers) and configures the lower layers using RRC signaling between the gNB and the UE.

As a sub-embodiment, the radio protocol architecture in fig. 3 is applicable to the user equipment in the present application.

As a sub-embodiment, the radio protocol architecture in fig. 3 is applicable to the base station in the present application.

As a sub-embodiment, the second signaling in this application is generated in the PHY 301.

As a sub-embodiment, the first signaling in this application is generated in the MAC sublayer 302.

As a sub-embodiment, the first signaling in this application is generated in the RRC sublayer 306.

Example 4

Embodiment 4 shows a schematic diagram of a base station device and a given user equipment according to the present application, as shown in fig. 4. Fig. 4 is a block diagram of a gNB410 in communication with a UE450 in an access network.

Base station apparatus (410) includes controller/processor 440, memory 430, receive processor 412, transmit processor 415, scheduling processor 471, transmitter/receiver 416, and antenna 420.

The user equipment (UE450) includes a controller/processor 490, memory 480, a data source 467, a transmit processor 455, a receive processor 452, a scheduling processor 441, a transmitter/receiver 456, and an antenna 460.

In the downlink transmission, the processing related to the base station apparatus (410) includes:

upper layer packets arrive at controller/processor 440, controller/processor 440 provides packet header compression, encryption, packet segmentation concatenation and reordering, and demultiplexing of the multiplex between logical and transport channels to implement the L2 layer protocol for the user plane and control plane; the upper layer packet may include data or control information, such as DL-SCH (Downlink Shared Channel);

the controller/processor 440 is associated with a memory 430 that stores program codes and data, the memory 430 may be a computer-readable medium;

the controller/processor 440 comprises a scheduling unit to schedule air interface resources corresponding to transmission requirements;

a scheduling processor 471 that determines the first signaling and the second signaling; and sends the results to controller/processor 440;

a transmit processor 415 receives the output bit stream of the controller/processor 440, implements various signal transmission processing functions for the L1 layer (i.e., physical layer) including coding, interleaving, scrambling, modulation, power control/allocation, and physical layer control signaling (including PBCH, PDCCH, PHICH, PCFICH, reference signal) generation, etc.;

a transmitter 416 for converting the baseband signal provided by the transmit processor 415 into a radio frequency signal and transmitting the radio frequency signal via an antenna 420; each transmitter 416 samples a respective input symbol stream to obtain a respective sampled signal stream. Each transmitter 416 further processes (e.g., converts to analog, amplifies, filters, upconverts, etc.) the respective sample stream to obtain a downlink signal.

In the downlink transmission, the processing related to the user equipment (UE450) may include:

a receiver 456 for converting radio frequency signals received via an antenna 460 to baseband signals for provision to the receive processor 452;

receive processor 452 performs various signal receive processing functions for the L1 layer (i.e., physical layer) including decoding, deinterleaving, descrambling, demodulation, and physical layer control signaling extraction, etc.;

a scheduling processor 441 that determines the first signaling and the second signaling; and sends the results to controller/processor 490;

controller/processor 490 receives the bit stream output by receive processor 452 and provides packet header decompression, decryption, packet segmentation concatenation and reordering, and multiplexing and demultiplexing between logical and transport channels to implement the L2 layer protocol for the user plane and control plane;

the controller/processor 490 is associated with a memory 480 that stores program codes and data. Memory 480 may be a computer-readable medium.

In uplink transmission, the processing related to the user equipment (UE450) may include:

a data source 467 provides upper layer packets to the controller/processor 490, the controller/processor 490 providing packet header compression, encryption, packet segmentation concatenation and reordering, and multiplexing and demultiplexing between logical and transport channels to implement the L2 layer protocol for the user plane and the control plane; the upper layer packet includes data or control information;

the controller/processor 490 is associated with a memory 480 that stores program codes and data. Memory 480 may be a computer-readable medium;

a transmit processor 455 receives the output bit stream of the controller/processor 490 and performs various signal transmit processing functions for the L1 layer (i.e., the physical layer) including coding, interleaving, scrambling, modulation, power control/allocation, physical layer control signaling generation, etc.;

the transmitter 456 is configured to convert the baseband signal provided by the transmit processor 455 into a radio frequency signal and transmit the radio frequency signal via the antenna 460; each transmitter 456 samples a respective input symbol stream to produce a respective sampled signal stream. Each transmitter 456 further processes (e.g., converts to analog, amplifies, filters, upconverts, etc.) the respective sample stream to obtain an uplink signal.

In uplink transmission, the processing related to the base station apparatus (410) may include:

a receiver 416 for converting the radio frequency signal received through the antenna 420 into a baseband signal to be provided to the receive processor 412;

receive processor 412 performs various signal receive processing functions for the L1 layer (i.e., the physical layer) including decoding, deinterleaving, descrambling, demodulation, and physical layer control signaling extraction, among others;

controller/processor 440 receives the bitstream output by receive processor 412, provides packet header decompression, decryption, packet segmentation concatenation and reordering, and multiplexing and demultiplexing between logical and transport channels to implement L2 layer protocols for the user plane and control plane;

the controller/processor 440 may be associated with a memory 430 that stores program codes and data. The memory 430 may be a computer-readable medium.

As a sub-embodiment, the UE450 apparatus comprises: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code configured to, with the at least one processor, the UE450 apparatus at least: receiving a first signaling, receiving a second signaling, and respectively operating a first wireless signal and a second wireless signal in a first time-frequency resource; the first wireless signal and the second wireless signal occupy a first set of resource units and a second set of resource units, respectively; the first signaling is used to determine whether the second signaling includes a first field used to determine whether a target set of resource units belongs to the first set of resource units or the second set of resource units; assuming that the first time-frequency resource includes reference signals sent by K antenna ports, and a set of resource units occupied by the reference signals sent by the K antenna ports in the first time-frequency resource includes all resource units in the target resource unit set; the operation is receiving or the operation is transmitting; the K is a positive integer.

As a sub-embodiment, the UE450 includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: receiving a first signaling, receiving a second signaling, and respectively operating a first wireless signal and a second wireless signal in a first time-frequency resource; the first wireless signal and the second wireless signal occupy a first set of resource units and a second set of resource units, respectively; the first signaling is used to determine whether the second signaling includes a first field used to determine whether a target set of resource units belongs to the first set of resource units or the second set of resource units; assuming that the first time-frequency resource includes reference signals sent by K antenna ports, and a set of resource units occupied by the reference signals sent by the K antenna ports in the first time-frequency resource includes all resource units in the target resource unit set; the operation is receiving or the operation is transmitting; the K is a positive integer.

As a sub-embodiment, the gNB410 apparatus comprises: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code are configured for use with the at least one processor. The gNB410 apparatus at least: sending a first signaling, sending a second signaling, and respectively executing a first wireless signal and a second wireless signal in a first time-frequency resource; the first wireless signal and the second wireless signal occupy a first set of resource units and a second set of resource units, respectively; the first signaling is used to determine whether the second signaling includes a first field used to determine whether a target set of resource units belongs to the first set of resource units or the second set of resource units; assuming that the first time-frequency resource includes reference signals sent by K antenna ports, and a set of resource units occupied by the reference signals sent by the K antenna ports in the first time-frequency resource includes all resource units in the target resource unit set; the performing is transmitting or the performing is receiving; the K is a positive integer.

As a sub-embodiment, the gNB410 includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: sending a first signaling, sending a second signaling, and respectively executing a first wireless signal and a second wireless signal in a first time-frequency resource; the first wireless signal and the second wireless signal occupy a first set of resource units and a second set of resource units, respectively; the first signaling is used to determine whether the second signaling includes a first field used to determine whether a target set of resource units belongs to the first set of resource units or the second set of resource units; assuming that the first time-frequency resource includes reference signals sent by K antenna ports, and a set of resource units occupied by the reference signals sent by the K antenna ports in the first time-frequency resource includes all resource units in the target resource unit set; the performing is transmitting or the performing is receiving; the K is a positive integer.

As a sub-embodiment, the UE450 corresponds to a user equipment in the present application.

As a sub-embodiment, the gNB410 corresponds to a base station in the present application.

As a sub-embodiment, at least the first two of the receiver 456, the receive processor 452, and the controller/processor 490 are configured to receive the first wireless signal and the second wireless signal, respectively, in a first time-frequency resource.

As a sub-embodiment, at least two of the transmitter 456, the transmit processor 455, and the controller/processor 490 are used to transmit the first wireless signal and the second wireless signal, respectively, in the first time-frequency resource.

As a sub-embodiment, at least the first two of the receiver 456, the receive processor 452, and the controller/processor 490 are used to receive the first signaling and the second signaling.

As a sub-embodiment, the scheduling processor 441 is used to determine the first signaling and the second signaling.

As a sub-embodiment, the scheduling processor 441 is configured to determine whether the second signaling comprises a first domain and whether a target set of resource units belongs to the first set of resource units or the second set of resource units.

As a sub-embodiment, at least two of the transmitter 416, the transmit processor 415, and the controller/processor 440 are used to transmit the first wireless signal and the second wireless signal, respectively, in the first time-frequency resource.

As a sub-embodiment, at least two of the receiver 416, the receive processor 412, and the controller/processor 440 are configured to receive the first wireless signal and the second wireless signal, respectively, in the first time-frequency resource.

As a sub-embodiment, at least the first two of the transmitter 416, the transmit processor 415, and the controller/processor 440 are used to send the first signaling and the second signaling.

As a sub-embodiment, the scheduling processor 471 is used to determine the first signaling and the second signaling.

As a sub-embodiment, the scheduling processor 471 is configured to determine whether the second signaling includes a first domain and whether a target set of resource elements belongs to the first set of resource elements or the second set of resource elements.

Example 5

Embodiment 5 illustrates a flow chart of a first wireless signal and a second wireless signal, as shown in fig. 5. In fig. 5, base station N1 is the serving cell maintaining base station for user equipment U2.

For theBase station N1The first signaling is transmitted in step S10, the second signaling is generated according to one of the N signaling formats in step S11, the second signaling is transmitted in step S12, and the first wireless signal and the second wireless signal are transmitted in the first time-frequency resource in step S13, respectively.

For theUser equipment U2The first signaling is received in step S20, the second signaling is received in step S21, the second signaling is blindly decoded for the N signaling formats in step S22, and the first wireless signal and the second wireless signal are received in the first time-frequency resource in step S23.

In embodiment 5, the first and second wireless signals occupy first and second sets of resource elements, respectively; the first signaling is used to determine whether the second signaling includes a first field used to determine whether a target set of resource units belongs to the first set of resource units or the second set of resource units; assuming that the first time-frequency resource includes reference signals sent by K antenna ports, and a set of resource units occupied by the reference signals sent by the K antenna ports in the first time-frequency resource includes all resource units in the target resource unit set; the K is a positive integer; the second signaling is used to determine a modulation coding state of the first wireless signal; if the second signaling includes the first field, the modulation coding state of the first wireless signal is one of K1 candidates, otherwise the modulation coding state of the first wireless signal is one of K2 candidates; the K1 and the K2 are each positive integers, the K1 is less than the K2; the small-scale channel parameters experienced by the second wireless signal are used to determine the small-scale channel parameters experienced by the first wireless signal; the N signaling formats correspond to N payload sizes, respectively, the first signaling includes N sub-signaling, and the N sub-signaling is used to determine whether the second signaling for the N signaling formats includes the first field, respectively.

As a sub-embodiment, only Q bits in the second signaling are used to determine the modulation coding state of the first wireless signal, Q being a positive integer; the Q is Q1 if the second signaling comprises the first domain, otherwise the Q is Q2; the Q1 is less than the Q2.

As a sub-example, the K1 candidates correspond to K1 spectral efficiencies one-to-one, and the K2 candidates correspond to K2 spectral efficiencies one-to-one.

As a sub-embodiment, the highest of the K1 spectral efficiencies is lower than the highest of the K2 spectral efficiencies.

As a sub-embodiment, the lowest of the K1 spectral efficiencies is lower than the lowest of the K2 spectral efficiencies.

As a sub-embodiment, the second signaling corresponds to a given DCI format whose payload size is independent of whether the target set of resource units belongs to the first set of resource units.

As a sub-embodiment, the second signaling corresponds to a given DCI format, the payload size of the given DCI format being independent of whether the target set of resource units belongs to the second set of resource units.

As a sub-embodiment, the second signaling corresponds to a given DCI format whose payload size is fixed.

As a sub-embodiment, the K2 equals 32 and the K1 equals 16.

As a sub-embodiment, the K2 equals 32 and the K1 equals 8.

As a sub-embodiment, the K2 equals 64 and the K1 equals 32.

As a sub-embodiment, the K2 equals 64 and the K1 equals 16.

As a sub-embodiment, the small-scale Channel parameter includes CIR (Channel Impulse Response).

As a sub-embodiment, the small-scale channel parameters experienced by the second wireless signal and the small-scale channel parameters experienced by the first wireless signal are correlated.

As a sub-embodiment, the transmitting antenna port of the second wireless signal is the same as the transmitting antenna port of the first wireless signal.

As a sub-embodiment, the transmit antenna port of the second wireless signal and the transmit antenna port of the first wireless signal share the same beamforming vector.

As a sub-embodiment, the small-scale channel parameters experienced by the second wireless signal and the small-scale channel parameters experienced by the first wireless signal are the same regardless of time-varying characteristics and frequency-selective characteristics of the wireless channel.

As a sub-embodiment, the signaling Format in this application is DCI Format.

As a sub-embodiment, the Blind Decoding (Blind Decoding) the second signaling for N signaling formats respectively refers to: the user equipment U2 blindly decodes the second signaling according to N payload sizes, respectively.

As a sub-embodiment, the generating the second signaling according to one of the N signaling formats is: and the base station N1 generates the second signaling according to the load size corresponding to one of the N signaling formats.

As a sub-embodiment, the N sub-signalings being respectively used for determining whether the second signaling for the N signaling formats includes the first domain is: a given sub-signaling corresponds to a given signaling format, the given sub-signaling belongs to the N sub-signaling, and the given signaling format is a signaling format corresponding to the given sub-signaling in the N signaling formats; when the second signaling is the given signaling format, the given sub-signaling is used to determine whether the second signaling includes the first domain.

As a sub-embodiment, the first DCI format in the present application is one of the N signaling formats.

As a sub-embodiment, any two of the N load sizes are different.

As a sub-embodiment, said N is equal to 2.

As a sub-embodiment, the N signaling formats are fixed.

As a sub-embodiment, the N signaling formats are configured through higher layer signaling.

Example 6

Embodiment 6 illustrates a flow chart of another first wireless signal and second wireless signal, as shown in fig. 6. In fig. 6, base station N3 is the serving cell maintaining base station for user equipment U4.

For theBase station N3The first signaling is transmitted in step S30, the second signaling is generated according to one of the N signaling formats in step S31, the second signaling is transmitted in step S32, and the first wireless signal and the second wireless signal are respectively received in the first time-frequency resource in step S33.

For theUser equipment U4The first signaling is received in step S40, the second signaling is received in step S41, the second signaling is blindly decoded for the N signaling formats in step S42, and the first wireless signal and the second wireless signal are transmitted in the first time-frequency resource in step S43.

In embodiment 6, the first and second wireless signals occupy first and second sets of resource elements, respectively; the first signaling is used to determine whether the second signaling includes a first field used to determine whether a target set of resource units belongs to the first set of resource units or the second set of resource units; assuming that the first time-frequency resource includes reference signals sent by K antenna ports, and a set of resource units occupied by the reference signals sent by the K antenna ports in the first time-frequency resource includes all resource units in the target resource unit set; the K is a positive integer; the second signaling is used to determine a modulation coding state of the first wireless signal; if the second signaling includes the first field, the modulation coding state of the first wireless signal is one of K1 candidates, otherwise the modulation coding state of the first wireless signal is one of K2 candidates; the K1 and the K2 are each positive integers, the K1 is less than the K2; the small-scale channel parameters experienced by the second wireless signal are used to determine the small-scale channel parameters experienced by the first wireless signal; the N signaling formats correspond to N payload sizes, respectively, the first signaling includes N sub-signaling, and the N sub-signaling is used to determine whether the second signaling for the N signaling formats includes the first field, respectively.

As a sub-embodiment, the K2 equals 32 and the K1 equals 16.

As a sub-embodiment, the K2 equals 32 and the K1 equals 8.

As a sub-embodiment, the K2 equals 64 and the K1 equals 32.

As a sub-embodiment, the K2 equals 64 and the K1 equals 16.

As a sub-embodiment, the small-scale channel parameter includes a CIR.

As a sub-embodiment, the signaling Format is DCI Format.

As a sub-embodiment, the blind coding of the second signaling for the N signaling formats respectively refers to: the user equipment U4 blindly decodes the second signaling according to N payload sizes, respectively.

As a sub-embodiment, the generating the second signaling according to one of the N signaling formats is: and the base station N3 generates the second signaling according to the load size corresponding to one of the N signaling formats.

As a sub-embodiment, any two of the N load sizes are different.

As a sub-embodiment, said N is equal to 2.

As a sub-embodiment, the N signaling formats are fixed.

Example 7

Example 7 illustrates a schematic diagram of a target set of resource units, as shown in FIG. 7. The first time-frequency resource occupies a positive integer number of time-frequency resource blocks, and a target time-frequency resource block is any one of the positive integer number of time-frequency resource blocks; the small squares filled with diagonal lines in fig. 7 show the time-frequency resource positions of REs occupied by the target resource unit set in one of the target time-frequency resource blocks.

As a sub-embodiment, the positive integer number of time-frequency resource blocks is discrete in the frequency domain.

As a sub-embodiment, the positive integer number of time-frequency resource blocks are consecutive in the frequency domain.

As a sub-embodiment, the first set of candidate REs shown in fig. 7 belongs to the first set of resource units in this application.

As a sub-embodiment, the second set of candidate REs shown in fig. 7 belongs to the second set of resource units in this application.

As a sub-embodiment, the first set of resource units is used for data transmission.

As a sub-embodiment, the second set of resource elements is used for transmission of reference signals.

Example 8

Embodiment 8 illustrates a schematic diagram of a second signaling, and as shown in fig. 8, the first bit block corresponds to the number of bits included in the second signaling; the target set of resource elements belongs to the first set of resource elements, the first bit block comprising a number of information bits of M1; or the target set of resource units belongs to the second set of resource units, the first bit block comprising a number of information bits of M2; the M2 and the M1 are both positive integers, the M2 is greater than the M1; the target set of resource units belongs to the second set of resource units, the first bit block comprises (M2-M1) bits used for the first domain.

As a sub-embodiment, (M2-M1) equals 1.

As a sub-embodiment, (M2-M1) equals 2.

As a sub-embodiment, only information bits are included in the first bit field.

As a sub-embodiment, the first bit field includes padding bits.

Example 9

Embodiment 9 illustrates a schematic diagram of another second signaling, and as shown in fig. 9, the second signaling includes M3 bits when the target set of resource units belongs to the first set of resource units and the target set of resource units belongs to the second set of resource units. The M3 bits include a second field used to determine a modulation coding state of the first wireless signal; the second signaling comprises a first field comprising a number of bits of Q1; or the second signaling does not include the first field, the second field including a number of bits of Q2; the Q1 and the Q2 are both positive integers, and the Q2 is greater than the Q1.

As a sub-embodiment, the second signaling includes the first domain, the modulation coding state of the first wireless signal is one of K1 candidates, the K1 is not greater than R1, the R1 is equal to the Q1 power of 2.

As a sub-embodiment, the second signaling does not include the first domain, the modulation coding state of the first wireless signal is one of K2 candidates, the K2 is not greater than R2, the R2 is equal to the Q2 power of 2.

As a sub-embodiment, the difference between the Q2 and the Q1 is equal to the length of the first domain.

As a sub-embodiment, the M3 bits include only information bits.

As a sub-embodiment, the M3 bits include padding bits.

Example 10

Embodiment 10 is a block diagram illustrating a processing apparatus in a UE, as shown in fig. 10. In fig. 10, the UE processing apparatus 1000 is mainly composed of a first receiver module 1001, a second receiver module 1002, and a first transceiver module 1003.

A first receiver module 1001 receiving first signaling;

a second receiver module 1002, receiving second signaling;

a first transceiver module 1003 operating first and second wireless signals, respectively, in first time-frequency resources;

in embodiment 10, the first wireless signal and the second wireless signal occupy a first set of resource units and a second set of resource units, respectively; the first signaling is used to determine whether the second signaling includes a first field used to determine whether a target set of resource units belongs to the first set of resource units or the second set of resource units; assuming that the first time-frequency resource includes reference signals sent by K antenna ports, and a set of resource units occupied by the reference signals sent by the K antenna ports in the first time-frequency resource includes all resource units in the target resource unit set; the operation is receiving or the operation is transmitting; the K is a positive integer.

As a sub-embodiment, the second signaling is used to determine a modulation coding state of the first wireless signal; if the second signaling includes the first field, the modulation coding state of the first wireless signal is one of K1 candidates, otherwise the modulation coding state of the first wireless signal is one of K2 candidates; the K1 and the K2 are each positive integers, the K1 being less than the K2.

As a sub-embodiment, the small scale channel parameters experienced by the second wireless signal are used to determine the small scale channel parameters experienced by the first wireless signal.

As a sub-embodiment, the second receiver module 1002 blindly decodes the second signaling for N signaling formats, respectively; the N signaling formats correspond to N payload sizes, respectively, the first signaling includes N sub-signaling, and the N sub-signaling is used to determine whether the second signaling for the N signaling formats includes the first field, respectively.

As a sub-embodiment, the first transceiver module 1003 includes at least the first three of { transmitter/receiver 454, receive processor 456, transmit processor 455, controller/processor 459} in embodiment 4.

As a sub-embodiment, the first receiver module 1001 includes at least the first two of { receiver 454, receive processor 456, controller/processor 459} in embodiment 4.

As a sub-embodiment, the second receiver module 1002 includes at least the first two of { receiver 454, receive processor 456, controller/processor 459} in embodiment 4.

As a sub-embodiment, at least one of the first receiver module 1001 and the second receiver module 1002 includes the scheduling processor 441 of embodiment 4.

Example 11

Embodiment 11 is a block diagram illustrating a processing apparatus in a base station device, as shown in fig. 11. In fig. 11, the base station device processing apparatus 1100 mainly comprises a first transmitter module 1101, a second transmitter module 1102 and a second transceiver module 1103.

A first transmitter module 1101, transmitting a first signaling;

a second transmitter module 1102, sending second signaling;

a second transceiver module 1103 executing the first and second wireless signals, respectively, in a first time-frequency resource;

in embodiment 11, the first wireless signal and the second wireless signal occupy a first set of resource units and a second set of resource units, respectively; the first signaling is used to determine whether the second signaling includes a first field used to determine whether a target set of resource units belongs to the first set of resource units or the second set of resource units; assuming that the first time-frequency resource includes reference signals sent by K antenna ports, and a set of resource units occupied by the reference signals sent by the K antenna ports in the first time-frequency resource includes all resource units in the target resource unit set; the performing is transmitting or the performing is receiving; the K is a positive integer.

As a sub-embodiment, the second transmitter module 1102 generates the second signaling according to one of N signaling formats; the N signaling formats correspond to N payload sizes, respectively, the first signaling includes N sub-signaling, and the N sub-signaling is used to determine whether the second signaling for the N signaling formats includes the first field, respectively; the receiver of the second signaling comprises a first user equipment that blindly decodes the second signaling for the N signaling formats, respectively.

As a sub-embodiment, the second transceiver module 1103 includes at least the first three of { transmitter/receiver 416, receive processor 412, transmit processor 415, controller/processor 440} in embodiment 4.

As a sub-embodiment, the first transmitter module 1101 includes at least two of { transmitter 416, transmit processor 415, controller/processor 440} in embodiment 4.

As a sub-embodiment, the second transmitter module 1102 comprises at least two of { transmitter 416, transmit processor 415, controller/processor 440} in embodiment 4.

As a sub-embodiment, at least one of the first transmitter module 1101, the second transmitter module 1102 includes the scheduling processor 471 of embodiment 4.

It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing relevant hardware through a program, and the program may be stored in a computer readable storage medium, such as a read-only memory, a hard disk or an optical disk. Alternatively, all or part of the steps of the above embodiments may be implemented by using one or more integrated circuits. Accordingly, the module units in the above embodiments may be implemented in a hardware form, or may be implemented in a form of software functional modules, and the present application is not limited to any specific form of combination of software and hardware. User equipment, terminal and UE in this application include but not limited to unmanned aerial vehicle, Communication module on the unmanned aerial vehicle, remote control plane, the aircraft, small aircraft, the cell-phone, the panel computer, the notebook, vehicle-mounted Communication equipment, wireless sensor, network card, thing networking terminal, the RFID terminal, NB-IOT terminal, Machine Type Communication (MTC) terminal, eMTC (enhanced MTC) terminal, the data card, network card, vehicle-mounted Communication equipment, low-cost cell-phone, equipment such as low-cost panel computer. The base station in the present application includes, but is not limited to, a macro cell base station, a micro cell base station, a home base station, a relay base station, a gNB (NR node B), a TRP (Transmitter Receiver Point), and other wireless communication devices.

The above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method in a user equipment used for wireless communication, comprising:

-receiving a first signaling;

-receiving second signaling;

2. The method of claim 1, wherein the second signaling is used to determine a modulation coding state of the first wireless signal; if the second signaling includes the first field, the modulation coding state of the first wireless signal is one of K1 candidates, otherwise the modulation coding state of the first wireless signal is one of K2 candidates; the K1 and the K2 are each positive integers, the K1 being less than the K2.

3. The method of claim 1 or 2, wherein the channel parameters of the small-scale channel experienced by the second wireless signal are used to determine the channel parameters of the small-scale channel experienced by the first wireless signal.

4. The method according to claim 1 or 2, comprising:

-blindly decoding the second signaling for N signaling formats, respectively;

5. The method of claim 3, comprising:

-blindly decoding the second signaling for N signaling formats, respectively;

6. A method in a base station used for wireless communication, comprising:

-transmitting first signalling;

-transmitting second signaling;

7. The method of claim 6, wherein the second signaling is used to determine a modulation coding state of the first wireless signal; if the second signaling includes the first field, the modulation coding state of the first wireless signal is one of K1 candidates, otherwise the modulation coding state of the first wireless signal is one of K2 candidates; the K1 and the K2 are each positive integers, the K1 being less than the K2.

8. The method of claim 6 or 7, wherein the channel parameters of the small-scale channel experienced by the second wireless signal are used to determine the channel parameters of the small-scale channel experienced by the first wireless signal.

9. The method according to claim 6 or 7, comprising:

-generating said second signalling according to one of N signalling formats;

10. The method of claim 8, comprising:

-generating said second signalling according to one of N signalling formats;

11. A user device configured for wireless communication, comprising:

-a first receiver module receiving first signaling;

-a second receiver module receiving second signaling;

12. The user equipment of claim 11, wherein the second signaling is used to determine a modulation coding state of the first wireless signal; if the second signaling includes the first field, the modulation coding state of the first wireless signal is one of K1 candidates, otherwise the modulation coding state of the first wireless signal is one of K2 candidates; the K1 and the K2 are each positive integers, the K1 being less than the K2.

13. The user equipment according to claim 11 or 12, wherein the channel parameters of the small scale channel experienced by the second radio signal are used to determine the channel parameters of the small scale channel experienced by the first radio signal.

14. The user equipment as claimed in claim 11 or 12, wherein the second receiver module blindly decodes the second signaling for N signaling formats, respectively; the N signaling formats correspond to N payload sizes, respectively, the first signaling includes N sub-signaling, and the N sub-signaling is used to determine whether the second signaling for the N signaling formats includes the first field, respectively.

15. The UE of claim 13, wherein the second receiver module blindly decodes the second signaling for N signaling formats, respectively; the N signaling formats correspond to N payload sizes, respectively, the first signaling includes N sub-signaling, and the N sub-signaling is used to determine whether the second signaling for the N signaling formats includes the first field, respectively.

16. A base station device used for wireless communication, comprising:

-a first transmitter module to transmit first signaling;

-a second transmitter module for transmitting second signaling;

17. The base station device of claim 16, wherein the second signaling is used to determine a modulation coding state of the first wireless signal; if the second signaling includes the first field, the modulation coding state of the first wireless signal is one of K1 candidates, otherwise the modulation coding state of the first wireless signal is one of K2 candidates; the K1 and the K2 are each positive integers, the K1 being less than the K2.

18. The base station device according to claim 16 or 17, wherein the channel parameters of the small-scale channel experienced by the second wireless signal are used to determine the channel parameters of the small-scale channel experienced by the first wireless signal.

19. The base station device of claim 16 or 17, wherein the second transmitter module generates the second signaling according to one of N signaling formats; the N signaling formats correspond to N payload sizes, respectively, the first signaling includes N sub-signaling, and the N sub-signaling is used to determine whether the second signaling for the N signaling formats includes the first field, respectively; the receiver of the second signaling comprises a first user equipment that blindly decodes the second signaling for the N signaling formats, respectively.

20. The base station device of claim 18, wherein the second transmitter module generates the second signaling according to one of N signaling formats; the N signaling formats correspond to N payload sizes, respectively, the first signaling includes N sub-signaling, and the N sub-signaling is used to determine whether the second signaling for the N signaling formats includes the first field, respectively; the receiver of the second signaling comprises a first user equipment that blindly decodes the second signaling for the N signaling formats, respectively.