CN114423086A

CN114423086A - Method and device used in user equipment and base station for wireless communication

Info

Publication number: CN114423086A
Application number: CN202210117540.2A
Authority: CN
Inventors: 陈晋辉; 张晓博; 杨林
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2018-06-20
Filing date: 2018-06-20
Publication date: 2022-04-29
Also published as: CN110620641B; CN110620641A

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 and receives first control information in sequence, and transmits a first reference signal group and a first data signal group in a first time unit, wherein the first control information is used for determining a first antenna port group, and the first antenna port group is used for transmitting the first reference signal and the first data signal group; the first control information indicates the first antenna port group from a first antenna port pool if a first antenna port mode is active; the first control information indicates a first subset of antenna ports from a pool of second antenna ports, from which the user equipment determines the first set of antenna ports, if a second antenna port mode is active. The method and the device flexibly support two sets of uplink reference signal schemes by using the existing signaling format, thereby reducing signaling overhead and simplifying system design.

Description

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

The present application is a divisional application of the following original applications:

application date of the original application: 2018, 06 and 20 months

- -application number of the original application: 201810636364.7

The invention of the original application is named: 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 method and apparatus for multi-user uplink transmission.

Background

In a conventional 3GPP (3rd Generation Partner Project) LTE (Long-term Evolution) system, uplink transmission at a terminal side often uses orthogonal Multiple Access (ofdma), and in the discussion of 5G NR (New Radio Access Technology), a plurality of terminals may Access by using a Non-orthogonal Multiple Access (NOMA) technique, so as to increase the number of ues performing uplink transmission simultaneously.

Disclosure of Invention

The number of terminals simultaneously performing uplink transmission is dynamically changed, and when the number of terminals simultaneously performing uplink transmission is small, a DMRS scheme for supporting a large number of DMRS has a problem of DMRS overhead efficiency; when the number of terminals performing uplink transmission at the same time is large, the existing DMRS scheme and notification method may not be sufficient to support more DMRS antenna ports.

In view of the above, 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 first control information, the first control information being used to determine a first antenna port group;

transmitting a first reference signal group and a first data signal group within a first time unit, the first antenna port group being used to transmit the first reference signal group, the first antenna port group also being used to transmit the first data signal group;

wherein the first control information indicates the first antenna port group from a first antenna port pool if a first antenna port mode is active; if a second antenna port mode is active, the first control information indicates a first subset of antenna ports from a second pool of antenna ports, the user equipment determines the first antenna port group from the first subset of antenna ports, the first subset of antenna ports including antenna ports not belonging to the first antenna port group; the number of antenna ports included in the second pool of antenna ports is greater than the number of antenna ports included in the first pool of antenna ports.

As an example, the above method has the benefits of: the existing signaling format is utilized to flexibly support two sets of uplink DMRS schemes, thereby reducing signaling overhead and simplifying system design.

Specifically, according to an aspect of the present invention, if the second antenna port mode is in an active state, the user equipment determines the first antenna port group from the first antenna port subset by itself.

As an example, the above method has the benefits of: reducing signaling overhead and notification delay.

Specifically, according to an aspect of the present invention, the method includes:

receiving second control information, the second control information being used to indicate the first antenna port group from the first subset of antenna ports.

As an example, the above method has the benefits of: optimizing system performance is indicated by the base station.

In particular, according to one aspect of the invention, it is characterized in that a physical control channel is used for transmitting said second control information, said second control information being for a plurality of user equipments, said user equipment being one of said plurality of user equipments.

As an example, the above method has the benefits of: control signaling overhead is reduced by sharing control signaling by multiple user equipments.

In particular, according to one aspect of the present invention, the number of user equipments for which the second control information is intended is used for determining the first antenna port group.

As an example, the above method has the benefits of: the DMRS scheme is determined by information on the number of user equipments, so that DMRS overhead is flexibly adjusted according to the number of user equipments, thereby optimizing system performance.

Specifically, according to an aspect of the present invention, the second control information indicates a first time point, where the first time point is a starting time of a time domain resource occupied by the first data signal group in the first time unit, and the first time point is used for determining the first antenna port group.

As an example, the above method has the benefits of: and determining a DMRS scheme according to a time domain resource occupied by a Physical Uplink Shared Channel (PUSCH), so that the DMRS overhead is flexibly adjusted according to the number of user equipment, and the system performance is optimized.

In particular, according to one aspect of the invention, it is characterized in that said second control information is used for determining said first subset of antenna ports.

As an example, the above method has the benefits of: the DMRS scheme is flexibly indicated.

receiving third control information, the third control information being used to activate the second antenna port mode.

receiving fourth control information, the fourth control information being used to deactivate the second antenna port mode.

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

transmitting first control information, the first control information being used to determine a first antenna port group;

receiving a first reference signal group and a first data signal group within a first time unit, the first antenna port group being used to transmit the first reference signal group, the first antenna port group also being used to transmit the first data signal group;

wherein the first control information indicates the first antenna port group from a first antenna port pool if a first antenna port mode of a recipient of the first control information is active; if a second antenna port mode of a recipient of the first control information is active, the first control information indicates a first subset of antenna ports from a second pool of antenna ports from which the recipient of the first control information determines the first antenna port group, the first subset of antenna ports including antenna ports that do not belong to the first antenna port group; the number of antenna ports included in the second pool of antenna ports is greater than the number of antenna ports included in the first pool of antenna ports.

In particular, according to one aspect of the invention, the receiver of the first control information determines the first antenna port group from the first antenna port subset by itself if the second antenna port mode is active.

transmitting second control information used to indicate the first antenna port group from the first antenna port subset.

In particular, according to one aspect of the invention, it is characterized in that a physical control channel is used for transmitting said second control information, said second control information being intended for a plurality of user equipments, the recipient of said first control information being one of said plurality of user equipments.

transmitting third control information, the third control information being used to activate the second antenna port mode.

transmitting fourth control information, the fourth control information being used to deactivate the second antenna port mode.

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

a first receiver module to receive first control information, the first control information being used to determine a first antenna port group;

a second transmitter module to transmit a first reference signal group and a first data signal group within a first time unit, the first antenna port group being used to transmit the first reference signal group, the first antenna port group also being used to transmit the first data signal group; wherein the first control information indicates the first antenna port group from a first antenna port pool if a first antenna port mode is active; if a second antenna port mode is active, the first control information indicates a first subset of antenna ports from a second pool of antenna ports, the user equipment determines the first antenna port group from the first subset of antenna ports, the first subset of antenna ports including antenna ports not belonging to the first antenna port group; the number of antenna ports included in the second pool of antenna ports is greater than the number of antenna ports included in the first pool of antenna ports.

As an embodiment, the above user equipment is characterized in that if the second antenna port mode is active, the user equipment determines the first antenna port group from the first antenna port subset by itself.

As an embodiment, the above user equipment is characterized in that the first receiver module receives second control information, the second control information being used to indicate the first antenna port group from the first antenna port subset.

As an embodiment, the above user equipment is characterized in that a physical control channel is used for transmitting the second control information, the second control information being for a plurality of user equipments, the user equipment being one of the plurality of user equipments.

As an embodiment, the above user equipment is characterized in that the number of user equipments for which the second control information is intended is used for determining the first antenna port group.

As an embodiment, the ue is characterized in that the second control information indicates a first time point, where the first time point is a starting time of a time domain resource occupied by the first data signal group in the first time unit, and the first time point is used for determining the first antenna port group.

As an embodiment, the above user equipment is characterized in that the second control information is used to determine the first subset of antenna ports.

As an embodiment, the above user equipment is characterized in that the first receiver module receives third control information, which is used to activate the second antenna port mode.

As an embodiment, the above user equipment is characterized in that the first receiver module receives fourth control information, and the fourth control information is used for deactivating the second antenna port mode.

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

a first transmitter module to transmit first control information, the first control information being used to determine a first antenna port group;

a second receiver module to receive a first set of reference signals and a first set of data signals during a first time unit, the first set of antenna ports being used to transmit the first set of reference signals, the first set of antenna ports also being used to transmit the first set of data signals; wherein the first control information indicates the first antenna port group from a first antenna port pool if a first antenna port mode of a recipient of the first control information is active; if a second antenna port mode of a recipient of the first control information is active, the first control information indicates a first subset of antenna ports from a second pool of antenna ports from which the recipient of the first control information determines the first antenna port group, the first subset of antenna ports including antenna ports that do not belong to the first antenna port group; the number of antenna ports included in the second pool of antenna ports is greater than the number of antenna ports included in the first pool of antenna ports.

As an embodiment, the base station device as described above is characterized in that the receiver of the first control information determines the first antenna port group from the first antenna port subset by itself if the second antenna port mode is active.

As an embodiment, the base station device is characterized in that the first transmitting module transmits second control information, and the second control information is used for indicating the first antenna port group from the first antenna port subset.

As an embodiment, the base station apparatus is characterized in that a physical control channel is used for transmitting the second control information, the second control information is for a plurality of user equipments, and a receiver of the first control information is one of the plurality of user equipments.

As an embodiment, the base station apparatus is characterized in that the number of user equipments for which the second control information is intended is used to determine the first antenna port group.

As an embodiment, the base station device is characterized in that the second control information indicates a first time point, the first time point is a starting time of a time domain resource occupied by the first data signal group in the first time unit, and the first time point is used for determining the first antenna port group.

As an embodiment, the base station device as described above is characterized in that the second control information is used to determine the first subset of antenna ports.

As an embodiment, the base station device is characterized in that the first transmitting module transmits third control information, and the third control information is used for activating the second antenna port mode.

As an embodiment, the base station device is characterized in that the first transmitting module transmits fourth control information, and the fourth control information is used for deactivating the second antenna port mode.

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

utilizing the existing signaling format to flexibly support two sets of uplink reference signal schemes, thereby reducing signaling overhead and simplifying system design;

employing a two-stage reference signal allocation scheme, thereby reducing signaling overhead.

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 control information, a first reference signal group, and a first data signal group according to one embodiment of the present 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 wireless transmission according to one embodiment of the present application;

FIG. 6 shows a schematic diagram of a first antenna port pool and a second antenna port pool according to the present application;

fig. 7 shows a schematic diagram of a first group of antenna ports and a first subset of antenna ports according to the present application;

fig. 8 shows a block diagram of a processing device for use in a user equipment according to an embodiment of the present application;

fig. 9 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 flowchart of first control information, a first reference signal group, and a first data signal group, as shown in fig. 1.

In embodiment 1, the ue in this application receives first control information in sequence, and sends a first reference signal group and a first data signal group in a first time unit; the first control information is used to determine a first antenna port group; the first set of antenna ports is used to transmit the first set of reference signals, the first set of antenna ports is also used to transmit the first set of data signals; the first control information indicates the first antenna port group from a first antenna port pool if a first antenna port mode is active; if a second antenna port mode is active, the first control information indicates a first subset of antenna ports from a second pool of antenna ports, the user equipment determines the first antenna port group from the first subset of antenna ports, the first subset of antenna ports including antenna ports not belonging to the first antenna port group; the number of antenna ports included in the second pool of antenna ports is greater than the number of antenna ports included in the first pool of antenna ports.

As a sub-embodiment, higher layer signaling is used to carry the first control information.

As a sub-embodiment, the first Control information is an ie (information element) in RRC (Radio Resource Control) signaling.

As a sub-embodiment, a PDCCH (Physical Downlink Control Channel) is used to transmit the first Control information.

As a sub-embodiment, the first Control Information is a DCI (Downlink Control Information).

As a sub-embodiment, the first control information is a bit field in one DCI.

As a sub-embodiment, the first control information is a DCI for scheduling a PUSCH (Physical Uplink Shared Channel).

As a sub-embodiment, the antenna port is formed by superimposing a plurality of physical antennas through antenna Virtualization (Virtualization), and mapping coefficients from the antenna port to the plurality of physical antennas form a beamforming vector for the antenna Virtualization to form a beam.

As a sub-embodiment, the first control information explicitly indicates the first antenna port group.

As a sub-embodiment, the first control information implicitly indicates the first antenna port group.

As a sub-embodiment, the first antenna port group comprises only one antenna port.

As a sub-embodiment, the first antenna port group includes a plurality of antenna ports.

As a sub-embodiment, the antenna ports correspond to the reference signals one to one.

As a sub-embodiment, the air interface resources occupied by the reference signals corresponding to different antenna ports are different.

As a sub-embodiment, the air interface resource includes at least one of a time domain resource, a frequency domain resource, and a code domain resource.

As a sub-embodiment, the channel experienced by a symbol transmitted on one antenna port may be used to infer the channel experienced by another symbol transmitted on the same antenna port.

As a sub-embodiment, the first time unit is a sub-frame.

As a sub-embodiment, the first time unit includes 14 OFDM (Orthogonal Frequency Division Multiplexing) symbols.

As a sub-embodiment, the first time unit includes 14 DFT-S-OFDM (Discrete Fourier Transform Spread OFDM) symbols.

As a sub-embodiment, the first Reference Signal group is a Reference Signal group composed of uplink DMRSs (Demodulation Reference Signal).

As a sub-embodiment, PUSCH (Physical Uplink Shared Channel) is used to carry the first data signal group.

As a sub-embodiment, a configuration grant (configured grant) is used to transmit the first data signal group.

As a sub-embodiment, the first time unit is a time unit in a first time-frequency resource pool, and the first control information is used to configure the first video resource pool.

As a sub-embodiment, the first control information indicates a number of antenna ports in the first antenna port group.

As a sub-embodiment, the second pool of antenna ports comprises a plurality of subsets of antenna ports, and the first control information indicates a number of the first subset of antenna ports among the plurality of subsets of antenna ports.

As a sub-embodiment, channel measurements made based on the first set of reference signals are used to demodulate the first set of data signals.

As a sub-embodiment, the first control information explicitly indicates the first subset of antenna ports from the second pool of antenna ports.

As a sub-embodiment, the first control information implicitly indicates the first subset of antenna ports from the second pool of antenna ports.

As a sub-embodiment, the number of antenna ports included in the second antenna port pool is Q times the number of antenna ports constituting the first antenna port pool, and Q is a positive integer greater than 1.

As a sub-embodiment, the first antenna port pool is composed of P antenna ports, the second antenna port pool is composed of P antenna port subsets, any one of the P antenna port subsets is composed of Q antenna ports, and both P and Q are positive integers greater than 1.

As a sub-embodiment, the P antenna ports correspond to the P antenna port subsets one to one.

As a sub-embodiment, the first control information includes a first value, and if a first antenna port mode is in an active state, the first value is a number of an antenna port in the first antenna port group in the first antenna port pool; the first value is a number of the first subset of antenna ports in the second pool of antenna ports if a second antenna port mode is active.

As a sub-embodiment, the first antenna port mode and the second antenna port mode are not active at the same time.

As a sub-embodiment, if the second antenna port mode is active, the user equipment determines the first antenna port group from the first antenna port subset by itself.

As a sub-embodiment, the user equipment randomly selects antenna ports from the first subset of antenna ports to form the first antenna port group.

As a sub-embodiment, the user equipment selects antenna ports from the first subset of antenna ports according to a channel measurement result to form the first antenna port group.

As a sub-embodiment, the user equipment sends second control information, which is used to indicate the first antenna port group from the first antenna port subset.

As a sub-embodiment, the second control information explicitly indicates the first antenna port group from the first antenna port subset.

As a sub-embodiment, the second control information implicitly indicates the first antenna port group from the first antenna port subset.

As a sub-embodiment, a physical control channel is used for transmitting the second control information, the second control information being for a plurality of user equipments, a recipient of the first control information being one of the plurality of user equipments.

As a sub embodiment, the multiple pieces of user equipment share one RNTI (Radio Network Temporary identity) to receive the second control information.

As a sub-embodiment, the RNTI is used to scramble CRC (cyclic Redundancy Check) bits of the second control information.

As a sub-embodiment, the number of user equipments for which the second control information is intended is used for determining the first antenna port group.

As a sub-embodiment, the number of user equipments for which the second control information is intended is used for determining the second antenna port pool.

As a sub-embodiment, the second antenna port pool is composed of P antenna port subsets, any antenna port subset of the P antenna port subsets is composed of Q antenna ports, and the number of user equipments for which the second control information is directed is equal to Q.

As a sub-embodiment, the second antenna port pool is composed of P antenna port subsets, and the number of user equipments for which the second control information is intended is equal to P.

As a sub-embodiment, the antenna port groups adopted by the multiple user equipments all belong to the first antenna port subset.

As a sub-embodiment, the antenna port groups adopted by the multiple user equipments all belong to the first antenna port subset, and the antenna port groups adopted by the multiple user equipments include different antenna ports.

As a sub-embodiment, the antenna port groups adopted by the multiple user equipments respectively belong to different antenna port subsets in the second antenna port pool.

As a sub-embodiment, the antenna port groups adopted by the multiple user equipments respectively belong to different antenna port subsets in the second antenna port pool, and the antenna ports in the antenna port groups adopted by the multiple user equipments are numbered in the respective antenna port subsets in the same way.

As a sub-embodiment, the second control information indicates numbers of antenna ports in antenna port groups adopted by the plurality of user equipments in respective antenna port subsets.

As a sub-embodiment, the number of the user equipments for which the second control information is intended is used to calculate the number of the antenna ports in the first antenna port group.

As a sub-embodiment, the second control information indicates a first time point, which is a starting time of a time domain resource occupied by the first data signal group in the first time unit, and the first time point is used for determining the first antenna port group.

As a sub-embodiment, the first point in time is used to determine the second pool of antenna ports.

As a sub-embodiment, the first time point is used to calculate the number of antenna ports included in the second antenna port pool.

As a sub-embodiment, the further forward the first time point in the first time unit, the greater the number of antenna ports in the second pool of antenna ports.

As a sub-embodiment, the first time point has L candidate values at the position in the first time unit, the L candidate values correspond to L antenna port pools one to one, and the second antenna port pool is an antenna port pool determined by the value of the first time point from the L antenna port pools.

As a sub-embodiment, the first time point is used to indicate a time-frequency resource occupied by the first reference signal group in the first time unit.

As a sub-embodiment, the first time point is used to determine the time-frequency resources occupied by the first reference signal group in the first time unit.

As a sub-embodiment, the first time point is used to calculate the number of the antenna ports in the first antenna port group.

As a sub-embodiment, the first time point is used to limit a selection range of the first antenna port group in the first antenna port subset.

As a sub-embodiment, the second control information is used to determine the first subset of antenna ports.

As a sub-embodiment, the user equipment receives third control information, which is used to activate the second antenna port mode.

As a sub-embodiment, RRC signaling is used to carry the third control information.

As a sub-embodiment, a physical control channel is used for transmitting the third control information.

As a sub-embodiment, the third control information is a field in one DCI.

As a sub-embodiment, a broadcast channel is used to transmit the third control information.

As a sub-embodiment, the user equipment receives fourth control information, which is used to deactivate the second antenna port mode.

As a sub-embodiment, RRC signaling is used to carry the fourth control information.

As a sub-embodiment, a physical control channel is used for transmitting the fourth control information.

As a sub-embodiment, the fourth control information is a field in one DCI.

As a sub-embodiment, a broadcast channel is used for transmitting the fourth control information.

As a sub-embodiment, the first antenna port mode is active by default.

As a sub-embodiment, after the second antenna port mode is activated, the first antenna port mode is in an inactive state.

As a sub-embodiment, after the second antenna port mode is deactivated, the first antenna port mode is in an activated state.

Example 2

Embodiment 2 illustrates 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, 5G-CNs (5G-Core networks, 5G Core networks)/EPCs (Evolved Packet cores) 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 the UE201 with an access point to the 5G-CN/EPC 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, non-terrestrial base station communications, satellite mobile communications, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., MP3 player), a camera, a game console, a drone, an aircraft, a narrowband physical network device, a machine-type communication device, a terrestrial 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 is connected to the 5G-CN/EPC210 through an S1/NG interface. The 5G-CN/EPC210 includes MME/AMF/UPF211, other MME (Mobility Management Entity)/AMF (Authentication Management Field)/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 5G-CN/EPC 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 is a terminal supporting wireless communication over an unlicensed spectrum.

As a sub-embodiment, the UE201 is a terminal supporting grant free (grant free) transmission.

As a sub-embodiment, the UE201 is a terminal supporting beamforming.

As a sub-embodiment, the UE201 is a terminal supporting narrowband LBT.

As a sub-embodiment, the gNB203 supports wireless communication over unlicensed spectrum.

As a sub-embodiment, the gNB203 supports grant-less transmission.

As a sub-embodiment, the gNB203 supports beamforming-based uplink transmission.

Example 3

Embodiment 3 illustrates radio protocol architectures for the user plane and the control plane, 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 (Hybrid Automatic Repeat reQuest). 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 of fig. 3 is applicable to the base station in the present application.

As a sub-embodiment, the first control information in the present application is generated in the RRC sublayer 306.

As a sub-embodiment, the first set of reference signals in the present application is generated in the PHY 301.

As a sub-embodiment, the first data signal group in the present application is generated in the PDCP sublayer 304.

Example 4

Embodiment 4 illustrates a base station apparatus and a user equipment, as shown in fig. 4. Fig. 4 is a block diagram of a gNB410 in communication with a UE450 in an access network.

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

User equipment (450) includes controller/processor 490, memory 480, data source 467, transmit processor 455, receive processor 452, transmitter/receiver 456, and antenna 460.

In UL (Uplink) transmission, processing related to a base station apparatus (410) includes:

a receiver 416 receiving the radio frequency signal through its corresponding antenna 420, converting the received radio frequency signal to a baseband signal, and providing the baseband signal to the receive processor 412;

a receive processor 412 that 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;

a receive processor 412 that performs various signal receive processing functions for the L1 layer (i.e., the physical layer) including multi-antenna reception, Despreading (Despreading), code division multiplexing, precoding, etc.;

a controller/processor 440 implementing L2 layer functions and associated memory 430 storing program codes and data;

the controller/processor 440 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer packets from the UE 450; upper layer packets from controller/processor 440 may be provided to the core network;

a controller/processor 440, which determines a target air interface resource that may be occupied by a target wireless signal, and sends the result to the receive processor 412; determining whether the target uplink wireless signal occupies the target air interface resource through blind detection; the target wireless signal comprises the first reference signal group and the first data signal group in this application; the target air interface resource comprises at least one of { time domain resource, frequency domain resource, code domain resource and space resource } occupied by the first reference signal group and the first data signal group; the spatial resources correspond to antenna port groups occupied by the first reference signal group and the first data signal group.

In UL transmission, processing related to a user equipment (450) includes:

a data source 467 that provides upper layer data packets to the controller/processor 490. Data source 467 represents all protocol layers above the L2 layer;

a transmitter 456 for transmitting a radio frequency signal via its respective antenna 460, converting the baseband signal into a radio frequency signal and supplying the radio frequency signal to the respective antenna 460;

a transmit processor 455 implementing various signal reception processing functions for the L1 layer (i.e., physical layer) including coding, interleaving, scrambling, modulation, and physical layer signaling generation, etc.;

a transmit processor 455 implementing various signal reception processing functions for the L1 layer (i.e., physical layer) including multi-antenna transmission, Spreading, code division multiplexing, precoding, etc.;

controller/processor 490 performs header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on radio resource allocation of the gNB410, performs L2 layer functions for the user plane and control plane;

the controller/processor 490 is also responsible for HARQ operations, retransmission of lost packets, and signaling to the gNB 410;

a controller/processor 490 that determines the target air interface resources occupied by the target wireless signal itself and sends the result to the transmit processor 455; the target wireless signal comprises the first reference signal group and the first data signal group in this application; the target air interface resource comprises at least one of { time domain resource, frequency domain resource, code domain resource and space resource } occupied by the first reference signal group and the first data signal group; the spatial resources correspond to antenna port groups occupied by the first reference signal group and the first data signal group.

In DL (Downlink) transmission, processing related to a base station apparatus (410) includes:

a controller/processor 440, upper layer packet arrival, controller/processor 440 providing packet header compression, encryption, packet segmentation concatenation and reordering, and multiplexing and demultiplexing between logical and transport channels to implement L2 layer protocols for the user plane and the control plane; the upper layer packet may include data or control information, such as DL-SCH (Downlink Shared Channel);

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

a controller/processor 440 comprising a scheduling unit to transmit the requirements, the scheduling unit being configured to schedule air interface resources corresponding to the transmission requirements;

a controller/processor 440, which determines to transmit downlink signaling/data to be transmitted; and sends the results to send processor 415;

a transmit processor 415 that receives the output bit stream of the controller/processor 440, performs various signal transmission processing functions for the L1 layer (i.e., physical layer) including coding, interleaving, scrambling, modulation, precoding, 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 it 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 DL transmission, the processing related to the user equipment (450) 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;

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

a controller/processor 490 receiving the bit stream output by the receive processor 452, providing 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 the 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.

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 first control information, the first control information being used to determine a first antenna port group; transmitting a first reference signal group and a first data signal group within a first time unit, the first antenna port group being used to transmit the first reference signal group, the first antenna port group also being used to transmit the first data signal group; wherein the first control information indicates the first antenna port group from a first antenna port pool if a first antenna port mode is active; if a second antenna port mode is active, the first control information indicates a first subset of antenna ports from a second pool of antenna ports, the user equipment determines the first antenna port group from the first subset of antenna ports, the first subset of antenna ports including antenna ports not belonging to the first antenna port group; the number of antenna ports included in the second pool of antenna ports is greater than the number of antenna ports included in the first pool of antenna ports.

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 first control information, the first control information being used to determine a first antenna port group; transmitting a first reference signal group and a first data signal group within a first time unit, the first antenna port group being used to transmit the first reference signal group, the first antenna port group also being used to transmit the first data signal group; wherein the first control information indicates the first antenna port group from a first antenna port pool if a first antenna port mode is active; if a second antenna port mode is active, the first control information indicates a first subset of antenna ports from a second pool of antenna ports, the user equipment determines the first antenna port group from the first subset of antenna ports, the first subset of antenna ports including antenna ports not belonging to the first antenna port group; the number of antenna ports included in the second pool of antenna ports is greater than the number of antenna ports included in the first pool of antenna ports.

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: transmitting first control information, the first control information being used to determine a first antenna port group; receiving a first reference signal group and a first data signal group within a first time unit, the first antenna port group being used to transmit the first reference signal group, the first antenna port group also being used to transmit the first data signal group; wherein the first control information indicates the first antenna port group from a first antenna port pool if a first antenna port mode of a recipient of the first control information is active; if a second antenna port mode of a recipient of the first control information is active, the first control information indicates a first subset of antenna ports from a second pool of antenna ports from which the recipient of the first control information determines the first antenna port group, the first subset of antenna ports including antenna ports that do not belong to the first antenna port group; the number of antenna ports included in the second pool of antenna ports is greater than the number of antenna ports included in the first pool of antenna ports.

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: transmitting first control information, the first control information being used to determine a first antenna port group; receiving a first reference signal group and a first data signal group within a first time unit, the first antenna port group being used to transmit the first reference signal group, the first antenna port group also being used to transmit the first data signal group; wherein the first control information indicates the first antenna port group from a first antenna port pool if a first antenna port mode of a recipient of the first control information is active; if a second antenna port mode of a recipient of the first control information is active, the first control information indicates a first subset of antenna ports from a second pool of antenna ports from which the recipient of the first control information determines the first antenna port group, the first subset of antenna ports including antenna ports that do not belong to the first antenna port group; the number of antenna ports included in the second pool of antenna ports is greater than the number of antenna ports included in the first pool of antenna ports.

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 used to receive the first control information in this application.

As a sub-embodiment, at least the first two of the transmitter 456, the transmit processor 455, and the controller/processor 490 transmit the first set of reference signals and the first set of data signals 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 used to receive the second control information in this application.

As a sub-embodiment, at least the first two of the receiver 456, receive processor 452, and controller/processor 490 are used to receive third control information 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 used to receive fourth control information in the present application.

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 transmit the first control information in this application.

As a sub-embodiment, at least the first two of the receiver 416, the receive processor 412, and the controller/processor 440 are used to receive the first set of reference signals and the first set of data signals in the present application.

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 transmit the second control information in this application.

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 transmit third control information in the present application.

Example 5

Embodiment 5 illustrates a flow chart of wireless transmission, as shown in fig. 5. In fig. 5, base station N1 is the serving cell maintaining base station for user equipment U2. In the figure, the steps in the box identified as F1, the box identified as F2, and the box identified as F3 are optional.

For theBase station N1First control information is transmitted in step S11, third control information is transmitted in step S12, second control information is transmitted in step S13, the first reference signal group and the first data signal group are received in step S14, and fourth control information is transmitted in step S15.

For theUser equipment U2The first control information is received in step S21, the third control information is received in step S22, the second control information is received in step S23, the first reference signal group and the first data signal group are transmitted in step S24, and the fourth control information is received in step S25.

In embodiment 5, the first control information is used by U2 to determine a first antenna port group; the first antenna port group is used by U2 for transmitting the first reference signal group, the first antenna port group is also used by U2 for transmitting the first data signal group; the first control information indicates the first antenna port group from a first antenna port pool if a first antenna port mode is active; if a second antenna port mode is active, the first control information indicates a first subset of antenna ports from a second pool of antenna ports, and U2 determines the first antenna port group from the first subset of antenna ports, the first subset of antenna ports including antenna ports not belonging to the first antenna port group; the number of antenna ports included in the second pool of antenna ports is greater than the number of antenna ports included in the first pool of antenna ports.

As a sub-embodiment, if the second antenna port mode is active, U2 determines the first antenna port group from the first antenna port subset by itself.

As a sub-embodiment, the second control information is used by N1 to indicate the first antenna port group from the first antenna port subset.

As a sub-embodiment, the step in the F2 block exists, the physical control channel is used by N1 for transmitting the second control information, the second control information is for a plurality of user equipments, and U2 is one of the plurality of user equipments.

As a sub-embodiment, the number of user equipments for which the second control information is intended is used by U2 in determining the first antenna port group.

As a sub-embodiment, the second control information indicates a first time point, which is a starting time of a time domain resource occupied by the first data signal group in the first time unit, and the first time point is used by U2 for determining the first antenna port group.

As a sub-embodiment, the second control information is used by U2 to determine the first subset of antenna ports.

As a sub-embodiment, the step in block F1 exists, the U2 receives third control information, which is used to activate the second antenna port mode.

As a sub-embodiment, the step in block F3 exists, the fourth control information is used to deactivate the second antenna port mode.

Example 6

Embodiment 6 illustrates a first antenna port pool and a second antenna port pool in the present application, as shown in fig. 6.

In embodiment 6, the first antenna port pool is composed of L antenna ports from consecutive antenna port # K to antenna port # K + L-1, and the second antenna port pool is composed of N antenna ports from consecutive antenna port # M to antenna port # M + N-1, where L and N are positive integers, and N is greater than L.

As a sub-embodiment, different antenna ports correspond to reference signals occupying different air interface resources.

As a sub-embodiment, the total time-frequency resources occupied by the reference signal corresponding to the first antenna port pool and the reference signal corresponding to the second antenna port pool are the same.

As a sub-embodiment, the total time-frequency resources occupied by the reference signal corresponding to the first antenna port pool and the reference signal corresponding to the second antenna port pool are different.

As a sub-embodiment, the N is a positive integer multiple of the L.

Example 7

Embodiment 7 illustrates a first antenna port group and a first antenna port subset in the present application, as shown in fig. 7.

In embodiment 7, the second antenna port pool in the present application is composed of P antenna port subsets, and the first antenna port subset is one of the P antenna port subsets. Each subset of antenna ports comprises Q antenna ports, the first set of antenna ports comprising antenna ports belonging to the first subset of antenna ports.

As a sub-embodiment, the first control information in this application is used to indicate the number of the first antenna port subset, and the second control information in this application is used to indicate the number of the antenna ports in the first antenna port group in the first antenna port subset.

Example 8

Embodiment 8 illustrates a structural block of a processing apparatus used in a user equipment, as shown in fig. 8. In fig. 8, a UE processing apparatus 800 is primarily comprised of a first receiver module 801 and a second transmitter module 802.

The first receiver module 801 receives first control information.

The second transmitter module 802 transmits the first reference signal group and the first data signal group in a first time unit.

In embodiment 8, the first control information is used to determine a first antenna port group; the first set of antenna ports is used to transmit the first set of reference signals, the first set of antenna ports is also used to transmit the first set of data signals; the first control information indicates the first antenna port group from a first antenna port pool if a first antenna port mode is active; if a second antenna port mode is active, the first control information indicates a first subset of antenna ports from a second pool of antenna ports, the user equipment determines the first antenna port group from the first subset of antenna ports, the first subset of antenna ports including antenna ports not belonging to the first antenna port group; the number of antenna ports included in the second pool of antenna ports is greater than the number of antenna ports included in the first pool of antenna ports.

As a sub-embodiment, the first receiver module 901 receives second control information, which is used to indicate the first antenna port group from the first antenna port subset.

As a sub-embodiment, a physical control channel is used for transmitting the second control information, the second control information being for a plurality of user equipments, the user equipment being one of the plurality of user equipments.

As a sub-embodiment, the first receiver module 801 receives third control information, which is used to activate the second antenna port mode.

As a sub-embodiment, the first receiver module 801 receives fourth control information, which is used to deactivate the second antenna port mode.

As a sub-embodiment, the first receiver module 1001 includes at least two of the receiver 456, the receive processor 452, and the controller/processor 490 of embodiment 4.

As a sub-embodiment, the second transmitter module 1002 includes at least two of the transmitter 456, the transmit processor 455, and the controller/processor 490 of embodiment 4.

Example 9

Embodiment 9 illustrates a block diagram of a processing apparatus used in a base station, as shown in fig. 9. In fig. 9, a base station processing apparatus 900 is mainly composed of a first transmitter module 901 and a second receiver module 902.

The first transmitter module 901 transmits the first control information.

The second receiver module 902 receives the first set of reference signals and the first set of data signals during the first time unit.

In embodiment 9, the first control information is used to determine a first antenna port group; the first set of antenna ports is used to transmit the first set of reference signals, the first set of antenna ports is also used to transmit the first set of data signals; the first control information indicates the first antenna port group from a first antenna port pool if a first antenna port mode of a recipient of the first control information is active; if a second antenna port mode of a recipient of the first control information is active, the first control information indicates a first subset of antenna ports from a second pool of antenna ports from which the recipient of the first control information determines the first antenna port group, the first subset of antenna ports including antenna ports that do not belong to the first antenna port group; the number of antenna ports included in the second pool of antenna ports is greater than the number of antenna ports included in the first pool of antenna ports.

As a sub-embodiment, the receiver of the first control information determines the first antenna port group from the first subset of antenna ports on its own, if the second antenna port mode is active.

As a sub-embodiment, the first transmitting module 901 transmits second control information, where the second control information is used to indicate the first antenna port group from the first antenna port subset.

As a sub-embodiment, the first transmitting module 901 transmits third control information, which is used to activate the second antenna port mode.

As a sub embodiment, the first transmitting module 901 transmits fourth control information, and the fourth control information is used to deactivate the second antenna port mode.

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 user device configured for wireless communication, comprising:

a second transmitter module to transmit a first reference signal group and a first data signal group within a first time unit, the first antenna port group being used to transmit the first reference signal group, the first antenna port group also being used to transmit the first data signal group;

wherein the first control information indicates the first antenna port group from a first antenna port pool if a first antenna port mode is active; if a second antenna port mode is active, the first control information indicates a first subset of antenna ports from a second pool of antenna ports, the user equipment determines the first antenna port group from the first subset of antenna ports, the first subset of antenna ports including antenna ports not belonging to the first antenna port group; the number of antenna ports included in the second antenna port pool is greater than the number of antenna ports included in the first antenna port pool; the first set of reference signals comprises a DMRS; the PUSCH is used to carry the first data signal group.

2. The UE of claim 1, wherein the UE determines the first antenna port group from the first antenna port subset by itself if the second antenna port mode is active.

3. The user equipment of claim 1 or 2, wherein the first receiver module receives second control information, the second control information being used to indicate the first group of antenna ports from the first subset of antenna ports; alternatively, the second control information is used to determine the first subset of antenna ports.

4. The user equipment as claimed in any of claims 1 to 3, wherein the first reference signal group is a reference signal group consisting of uplink DMRS; the first control information is a DCI for scheduling a PUSCH, or higher layer signaling is used to carry the first control information.

5. The UE of any one of claims 1 to 4, wherein the first control information is a DCI, and wherein a PDCCH is used for transmitting the first control information;

alternatively, higher layer signaling is used to carry the first control information.

6. The user equipment according to any of claims 1-5, wherein the first antenna port mode and the second antenna port mode are not active at the same time; after the second antenna port mode is activated, the first antenna port mode is in an inactive state.

7. The UE of any of claims 1 to 6, wherein the first receiver module receives at least one of third control information and fourth control information; the third control information is used to activate the second antenna port mode and the fourth control information is used to deactivate the second antenna port mode.

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

a second receiver module to receive a first set of reference signals and a first set of data signals during a first time unit, the first set of antenna ports being used to transmit the first set of reference signals, the first set of antenna ports also being used to transmit the first set of data signals;

wherein the first control information indicates the first antenna port group from a first antenna port pool if a first antenna port mode of a recipient of the first control information is active; if a second antenna port mode of a recipient of the first control information is active, the first control information indicates a first subset of antenna ports from a second pool of antenna ports from which the recipient of the first control information determines the first antenna port group, the first subset of antenna ports including antenna ports that do not belong to the first antenna port group; the number of antenna ports included in the second antenna port pool is greater than the number of antenna ports included in the first antenna port pool; the first set of reference signals comprises a DMRS; the PUSCH is used to carry the first data signal group.

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

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