CN110324905B - Method and device used in user equipment and base station for wireless communication - Google Patents
Method and device used in user equipment and base station for wireless communication Download PDFInfo
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- CN110324905B CN110324905B CN201810265620.6A CN201810265620A CN110324905B CN 110324905 B CN110324905 B CN 110324905B CN 201810265620 A CN201810265620 A CN 201810265620A CN 110324905 B CN110324905 B CN 110324905B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0621—Feedback content
- H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
Abstract
The application discloses a method and a device in a user equipment, a base station and the like used for wireless communication. The method comprises the steps that user equipment sends a first wireless signal, receives a first signaling and sends a second wireless signal, wherein a first reference bit block is spread by a first spreading sequence to generate the first wireless signal; the first signaling indicates whether the first spreading sequence can be used to transmit a first block of data bits that is spread to generate the second wireless signal. The method and the device can enable the base station to indicate the user equipment to replace the used spreading sequence according to the channel condition, thereby reducing the interference between the user equipment during uplink transmission and improving the system performance.
Description
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 uplink transmission of non-orthogonal multiple access.
Background
In a conventional 3GPP (3 rd Generation Partner Project) LTE (Long-term Evolution) system, uplink transmission at a terminal side often uses orthogonal multiple Access, and in the discussion of 5G NR (New Radio Access Technology), a plurality of terminals may use non-orthogonal multiple Access Technology for Access, so as to increase the number of ues performing uplink transmission simultaneously. Interference between user equipment transmissions caused by non-orthogonal multiple access is an urgent problem to be solved.
Disclosure of Invention
For a user equipment adopting non-orthogonal multiple access, how to reduce interference between user equipments and signaling transmission overhead by allocating a multiple access signature used in uplink transmission for the user equipment is a problem to be solved urgently.
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:
transmitting a first wireless signal, wherein a first reference bit block is spread by a first spreading sequence to generate the first wireless signal, and the first reference bit block comprises a plurality of bits;
receiving first signaling indicating whether the first spreading sequence can be used to transmit a first block of data bits, measurements for the first wireless signal being used to determine content of the first signaling;
transmitting a second wireless signal, the first block of data bits being spread by the first spreading sequence generating the second wireless signal if the first signaling indicates that the first spreading sequence can be used to spread the first block of data bits; the first block of data bits is spread with a second spreading sequence to generate the second wireless signal if the first signaling indicates that the first spreading sequence cannot be used to spread the first block of data bits.
As an embodiment, a receiver of the first wireless signal knows the value of the first block of reference bits and the first spreading sequence.
As an embodiment, the value of the first block of reference bits is configured by default.
As an embodiment, the first spreading sequence is pre-configured.
In one embodiment, a value of the first reference bit block is related to a time-frequency resource occupied by the first wireless signal.
In one embodiment, the first spreading sequence is related to time-frequency resources occupied by the first radio signal.
As one embodiment, the first wireless signal is transmitted on a Physical Uplink Shared Channel (PUSCH).
As an embodiment, the first signaling is transmitted on a Physical Downlink Control Channel (pdcch).
As an embodiment, the second wireless signal is transmitted on a Physical Uplink Shared Channel (PUSCH).
As an embodiment, the method may be used for the user equipment to adjust the used spreading sequence according to the channel interference condition, so as to reduce the interference between the user equipments due to the use of the non-orthogonal spreading sequence and improve the system performance.
Specifically, according to an aspect of the present invention, the first signaling indicates the second spreading sequence.
As an embodiment, the above method has a benefit that the base station can change the spreading sequence used by the user equipment according to the channel condition, thereby reducing the interference between the user equipment during uplink transmission.
Specifically, according to an aspect of the present invention, the user equipment determines the second spreading sequence by itself.
As an embodiment, the above method has a benefit that the user equipment can change and determine the spreading sequence by itself according to the base station indication, thereby reducing signaling overhead.
Specifically, according to an aspect of the present invention, the first signaling indicates whether a spreading sequence in a first spreading sequence group can be used to spread the first data bit block, the first spreading sequence belonging to the first spreading sequence group.
As an embodiment, the method may be used to reduce the overhead of the base station for indicating the spreading sequence, and increase the flexibility of selecting the spreading sequence by the user equipment.
Specifically, according to an aspect of the present invention, the first signaling indicates that a spreading sequence in a second spreading sequence group is used to spread the first data bit block, and the second spreading sequence group does not include the first spreading sequence.
As an embodiment, the method may be used to reduce the overhead of the base station for indicating the spreading sequence, and increase the flexibility of selecting the spreading sequence by the user equipment.
Specifically, according to an aspect of the present invention, the user equipment determines by itself whether to transmit the second wireless signal.
As an embodiment, the method described above may be used to reduce the delay of uplink transmission.
Specifically, according to an aspect of the present invention, the first reference bit block is transmitted periodically.
For one embodiment, the first block of reference bits is transmitted periodically within a first time window.
As an embodiment, the first time window is preconfigured.
As an embodiment, a transmission period of the first reference bit block is preconfigured.
As an embodiment, the method may be used to monitor the performance of the spreading sequence for uplink transmission, so as to flexibly adjust the uplink spreading sequence according to the channel interference condition.
The application discloses a method used in a base station device for wireless communication, which is characterized by comprising the following steps:
receiving a first wireless signal, wherein a first reference bit block is spread by a first spreading sequence to generate the first wireless signal, and the first reference bit block comprises a plurality of bits;
transmitting first signaling indicating whether the first spreading sequence can be used to transmit a first block of data bits, measurements for the first wireless signal being used to determine content of the first signaling;
receiving a second wireless signal, the first block of data bits being spread by the first spreading sequence to generate the second wireless signal if the first signaling indicates that the first spreading sequence can be used to spread the first block of data bits; the first block of data bits is spread with a second spreading sequence to generate the second wireless signal if the first signaling indicates that the first spreading sequence cannot be used to spread the first block of data bits.
Specifically, according to an aspect of the present invention, the first signaling indicates the second spreading sequence.
Specifically, according to one aspect of the present invention, the sender of the second wireless signal determines the second spreading sequence by itself.
Specifically, according to an aspect of the present invention, the first signaling indicates whether a spreading sequence in a first spreading sequence group can be used to spread the first data bit block, the first spreading sequence belonging to the first spreading sequence group.
Specifically, according to an aspect of the present invention, the first signaling indicates that a spreading sequence in a second spreading sequence group is used to spread the first data bit block, and the second spreading sequence group does not include the first spreading sequence.
Specifically, according to an aspect of the present invention, the sender of the second wireless signal determines by himself whether to send the second wireless signal.
Specifically, according to an aspect of the present invention, the first reference bit block is transmitted periodically.
The application discloses a user equipment used for wireless communication, characterized by comprising:
a first transmitter module, configured to transmit a first wireless signal, wherein a first reference bit block is spread by a first spreading sequence to generate the first wireless signal, and the first reference bit block includes multiple bits;
a second receiver module to receive first signaling indicating whether the first spreading sequence can be used to transmit a first block of data bits, measurements on the first wireless signal being used to determine content of the first signaling;
a third transmitter module that transmits a second wireless signal, the second wireless signal being generated by the first block of data bits being spread by the first spreading sequence if the first signaling indicates that the first spreading sequence can be used to spread the first block of data bits; the first block of data bits is spread by a second spreading sequence to generate the second wireless signal if the first signaling indicates that the first spreading sequence cannot be used to spread the first block of data bits.
As an embodiment, the above user equipment is characterized in that the first signaling indicates the second spreading sequence.
As an embodiment, the user equipment is characterized in that the user equipment determines the second spreading sequence by itself.
As an embodiment, the user equipment is characterized in that the first signaling indicates whether a spreading sequence in a first spreading sequence group can be used to spread the first data bit block, the first spreading sequence belonging to the first spreading sequence group.
As an embodiment, the user equipment as described above is characterized in that the first signaling indicates that a spreading sequence in a second spreading sequence group is used for spreading the first data bit block, the second spreading sequence group not including the first spreading sequence.
As an embodiment, the user equipment is characterized in that the user equipment determines by itself whether to transmit the second wireless signal.
As an embodiment, the above user equipment is characterized in that the first reference bit block is transmitted periodically.
The application discloses a base station device used for wireless communication, characterized by comprising:
a first receiver module that receives a first wireless signal, a first block of reference bits being spread by a first spreading sequence to generate the first wireless signal, the first block of reference bits comprising a plurality of bits;
a second transmitter module to transmit first signaling indicating whether the first spreading sequence can be used to transmit a first block of data bits, measurements on the first wireless signal being used to determine the content of the first signaling;
a third receiver module that receives a second wireless signal, the first block of data bits being spread by the first spreading sequence to generate the second wireless signal if the first signaling indicates that the first spreading sequence can be used to spread the first block of data bits; the first block of data bits is spread with a second spreading sequence to generate the second wireless signal if the first signaling indicates that the first spreading sequence cannot be used to spread the first block of data bits.
As an embodiment, the base station apparatus is characterized in that the first signaling indicates the second spreading sequence.
As an embodiment, the base station apparatus described above is characterized in that the transmitter of the second wireless signal determines the second spreading sequence by itself.
As an embodiment, the base station apparatus is characterized in that the first signaling indicates whether a spreading sequence in a first spreading sequence group can be used for spreading the first data bit block, and the first spreading sequence belongs to the first spreading sequence group.
As an embodiment, the base station apparatus is characterized in that the first signaling indicates that a spreading sequence in a second spreading sequence group is used for spreading the first data bit block, and the second spreading sequence group does not include the first spreading sequence.
As one embodiment, the above base station apparatus is characterized in that a sender of the second wireless signal determines by itself whether to transmit the second wireless signal.
As an embodiment, the base station apparatus described above is characterized in that the first reference bit block is transmitted periodically.
As an example, compared with the conventional scheme, the method has the following advantages:
the base station may instruct the ue to change the used spreading sequence according to the channel condition, so as to reduce the interference between ues in uplink transmission.
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 transmitting a second wireless signal 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;
FIG. 4 shows a schematic diagram of a base station and a UE according to an embodiment of the present application;
fig. 5 shows a flow diagram of a wireless transmission according to an embodiment of the application;
fig. 6 shows a schematic diagram of a spreading sequence according to an embodiment of the present application;
fig. 7 shows a schematic diagram of a first wireless signal generation according to an embodiment of the application;
FIG. 8 shows a schematic diagram of a second wireless signal generation according to an embodiment of the present application;
FIG. 9 shows a schematic diagram of periodically transmitting a first block of reference bits, according to an 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 flowchart of transmitting a second wireless signal, as shown in fig. 1.
In embodiment 1, the user equipment sequentially transmits a first radio signal, receives the first signaling, and transmits a second radio signal.
In embodiment 1, a first reference bit block is spread by a first spreading sequence to generate the first wireless signal, wherein the first reference bit block comprises a plurality of bits; the first signaling indicates whether the first spreading sequence can be used to transmit a first block of data bits, measurements for the first wireless signal being used to determine content of the first signaling; generating the second wireless signal by the first block of data bits being spread by the first spreading sequence if the first signaling indicates that the first spreading sequence can be used to spread the first block of data bits; the first block of data bits is spread with a second spreading sequence to generate the second wireless signal if the first signaling indicates that the first spreading sequence cannot be used to spread the first block of data bits.
As an embodiment, the user equipment determines the first spreading sequence by itself.
As an embodiment, a sender of the first signaling indicates the first spreading sequence.
As an embodiment, a sender of the first signaling indicates a first spreading sequence group, and the user equipment determines the first spreading sequence from the first spreading sequence group by itself.
As an embodiment, the identity of the user equipment is used for determining the first spreading sequence.
As an embodiment, the first reference bit block is constellation mapped and then spread by the first spreading sequence to generate the first wireless signal.
In one embodiment, the first wireless signal is generated by multicarrier modulation of a result of spreading the first block of reference bits with the first spreading sequence.
As an embodiment, a result of the spreading of the first block of reference bits by the first spreading sequence is scrambled to generate the first wireless signal.
As an embodiment, the first wireless signal is generated after a result of the first reference bit block being spread by the first spreading sequence is resource mapped.
As an embodiment, the time-frequency resources occupied by the first reference bit block after being extended by the first extension sequence are more than the time-frequency resources occupied by the first reference bit block without being extended.
As an embodiment, the number of bits in the first reference bit block and the length of the first spreading sequence are used to determine the number of time-frequency resources occupied by the first reference bit block after being spread by the first spreading sequence.
As an embodiment, a result of the first reference bit block being channel coded is spread by the first spreading sequence.
For one embodiment, the first block of reference bits includes CRC (cyclic Redundancy Check) bits.
As an embodiment, the identification of the user equipment is used for generating bits in the first block of reference bits.
As an embodiment, the identity of the user equipment is used to generate CRC bits in the first block of reference bits.
As an embodiment, the identification of the user equipment is used to scramble bits in the first block of reference bits.
As an embodiment, an RNTI (Radio Network Temporary Identity) of the user equipment is used to scramble bits in the first reference bit block.
As an embodiment, the minimum unit of the time-frequency Resource is a Resource Element (RE).
As an embodiment, the resource element occupies one subcarrier in the frequency domain and one multicarrier symbol in the time domain.
As an embodiment, the multi-carrier symbol refers to an OFDM (Orthogonal Frequency Division Multiplexing) symbol.
As an embodiment, the multi-carrier symbol refers to a DFT-s-OFDM (Discrete Fourier Transform Spread OFDM) symbol.
As an embodiment, a Physical Uplink Shared Channel (PUSCH) is used for transmitting the first reference bit block.
As an embodiment, the number of time-frequency resources used for transmitting the first reference bit Block is a positive integer number of Resource Blocks (RBs).
As an embodiment, one of the resource blocks includes a positive integer number of resource particles.
As an embodiment, one of the resource blocks consists of 12 resource particles.
As an embodiment, the first reference bit block consists of 24 bits.
As an embodiment, the first reference bit block consists of 16 bits.
As an embodiment, a Physical Downlink Control Channel (PDCCH) is used for transmitting the first signaling.
As an embodiment, the first signaling is Downlink Control Information (DCI).
As an embodiment, the first signaling is user equipment specific.
As an embodiment, the first signaling explicitly indicates whether the first spreading sequence can be used for transmitting the first block of data bits.
As an embodiment, the first signaling implicitly indicates whether the first spreading sequence can be used to transmit the first block of data bits.
As an embodiment, the first signaling is a field in one DCI.
As an embodiment, the first signaling includes 1 bit, 0 indicates that the first spreading sequence can be used to transmit the first block of data bits, and 1 indicates that the first spreading sequence cannot be used to transmit the first block of data bits.
As an embodiment, a first signal to interference and noise ratio measured for the first wireless signal by a receiver of the first wireless signal is used to determine whether the first spreading sequence can be used to transmit the first block of data bits.
As an example, if the first signal-to-noise ratio is higher than a first threshold, then the sender of the first signaling indicates that the first spreading sequence can be used to send the first block of data bits; otherwise, the sender of the first signaling indicates that the first spreading sequence cannot be used for sending the first block of data bits.
As an embodiment, a first user rate measured by a receiver of the first wireless signal for the first wireless signal is used to determine whether the first spreading sequence can be used to transmit the first block of data bits.
As an example, the first user rate ratio is higher than a second threshold, then the sender of the first signaling indicates that the first spreading sequence can be used to send the first block of data bits; otherwise, the sender of the first signaling indicates that the first spreading sequence cannot be used for sending the first block of data bits.
As an embodiment, the first signaling indicates that the first spreading sequence can be used to spread the first block of data bits, which is spread by the first spreading sequence to generate the second wireless signal
As an embodiment, the first signaling indicates that the first spreading sequence cannot be used to spread the first block of data bits, the first block of data bits being spread by a second spreading sequence that is different from the first spreading sequence to generate the second wireless signal.
As an embodiment, a Physical Uplink Shared Channel (PUSCH) is used for transmitting the first block of data bits.
As an embodiment, the first block of data bits is the result of the original block of data bits after channel coding and CRC bit attachment.
As an embodiment, the first block of data bits is transmitted on an Uplink Shared Channel (UL-SCH).
As an embodiment, the first signaling indicates the second spreading sequence.
As an embodiment, one field in the first signaling indicates the second spreading sequence.
As an embodiment, the first signaling explicitly indicates the second spreading sequence.
As an embodiment, the first signaling implicitly indicates the second spreading sequence.
As an embodiment, the user equipment determines the second spreading sequence by itself.
As an embodiment, the first signaling indicates that the first spreading sequence cannot be used to spread the first block of data bits, the user equipment determines the second spreading sequence by itself, and the second spreading sequence is different from the first spreading sequence.
As an embodiment, the first signaling indicates whether a spreading sequence in a first spreading sequence group can be used to spread the first data bit block, the first spreading sequence belonging to the first spreading sequence group.
As an embodiment, the first signaling indicates that a spreading sequence in a first spreading sequence group cannot be used for spreading the first data bit block, the first spreading sequence belongs to the first spreading sequence group, the user equipment determines the second spreading sequence from a second spreading sequence group, and the first spreading sequence does not belong to the second spreading sequence group.
As an embodiment, the user equipment determines the second extended sequence group by itself.
As an embodiment, the second set of spreading sequences is pre-configured.
As an embodiment, the first signaling indicates the second set of spreading sequences.
As an embodiment, the user equipment determines by itself whether to transmit the second wireless signal.
As an embodiment, time-frequency resources that can be used for transmitting the second wireless signal are pre-configured.
As an embodiment, the transmission of the second wireless signal is non-granted (grant-free).
As an embodiment, the first block of reference bits is transmitted periodically.
For one embodiment, the first block of reference bits is transmitted periodically within a first time window.
As an embodiment, the first time window is preconfigured.
As an embodiment, different spreading sequences are used for periodically transmitting the first block of reference bits within the first time window.
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 NR5G, LTE (Long-Term Evolution) and LTE-a (Long-Term Evolution Advanced) systems. The NR5G 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-RAN (next generation radio access Network) 202,5G-CN (5G-Core Network,5G Core Network)/EPC (Evolved Packet Core) 210, hss (Home Subscriber Server) 220, and internet service 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 bs (gnbs) 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/EPC210. 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 the 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/EPC210. In general, the MME/AMF/UPF211 provides bearer and connection management. All user IP (Internet protocol) packets are transmitted through the S-GW212, and the S-GW212 itself is connected to the P-GW213. 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 UE201 corresponds to the terminal 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 wireless communication for data transmission over an unlicensed spectrum.
As a sub-embodiment, the gNB203 supports wireless communication of data transmissions over unlicensed spectrum.
As a sub-embodiment, the UE201 supports NOMA (Non-Orthogonal Multiple Access) based wireless communication.
As a sub-embodiment, the gNB203 supports NOMA-based wireless communications.
As a sub-embodiment, the UE201 supports Grant-Free (Grant-Free) uplink transmission.
As a sub-embodiment, the gNB203 supports grant-less uplink transmission.
As a sub-embodiment, the UE201 supports contention-based uplink transmission.
As a sub-embodiment, the gNB203 supports contention-based uplink transmission.
As a sub-embodiment, the UE201 supports Beamforming (Beamforming) based uplink transmission.
As a sub-embodiment, the gNB203 supports beamforming-based uplink transmission.
As a sub-embodiment, the UE201 supports Massive-MIMO based uplink transmission.
As a sub-embodiment, the gNB203 supports Massive-MIMO based uplink transmission.
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 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, with layers above layer 1 belonging to higher layers. The L1 layer will be referred to herein as PHY301. Layer 2 (L2 layer) 305 is above PHY301 and is responsible for the link between the UE and the gNB through PHY301. 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 the 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 a RRC (Radio Resource Control) sublayer 306 in layer 3 (L3 layer). 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.
The radio protocol architecture of fig. 3 is applicable to the user equipment in the present application as an example.
The radio protocol architecture of fig. 3 is applicable to the base station in the present application as an example.
As an example, the first wireless signal in this application is generated in the PHY301.
As an embodiment, the second radio signal is generated in the PDCP sublayer 304.
As an embodiment, the first signaling in this application is generated in the PHY301.
Example 4
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 into 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., physical layer) including multi-antenna reception, demodulation, descrambling, despreading (desplading), deinterleaving, channel decoding, and physical layer control signaling extraction, etc.;
a controller/processor 440 implementing L2 layer functions and associated with 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 includes at least one of the first wireless signal and the second wireless signal in this application.
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 channel coding, scrambling, code division multiplexing, interleaving, modulation, multi-antenna transmission, and the like;
controller/processor 490 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on radio resource allocation of the gNB410, implementing 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 air interface resources occupied by the wireless signals and sends the results to the transmit processor 455.
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 demultiplexing of the multiplex between logical and transport channels to implement L2 layer protocols for the user plane and 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 digital and/or 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 through an antenna 460 to baseband signals provided 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;
associated with the controller/processor 490 is 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 device at least: transmitting a first wireless signal, wherein a first reference bit block is spread by a first spreading sequence to generate the first wireless signal, and the first reference bit block comprises a plurality of bits; receiving first signaling indicating whether the first spreading sequence can be used to transmit a first block of data bits, measurements for the first wireless signal being used to determine content of the first signaling; transmitting a second wireless signal, the first block of data bits being spread by the first spreading sequence generating the second wireless signal if the first signaling indicates that the first spreading sequence can be used to spread the first block of data bits; the first block of data bits is spread by a second spreading sequence to generate the second wireless signal if the first signaling indicates that the first spreading sequence cannot be used to spread the first block of data bits.
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: transmitting a first wireless signal, wherein a first reference bit block is spread by a first spreading sequence to generate the first wireless signal, and the first reference bit block comprises a plurality of bits; receiving first signaling indicating whether the first spreading sequence can be used to transmit a first block of data bits, measurements for the first wireless signal being used to determine content of the first signaling; transmitting a second wireless signal, the first block of data bits being spread by the first spreading sequence generating the second wireless signal if the first signaling indicates that the first spreading sequence can be used to spread the first block of data bits; the first block of data bits is spread by a second spreading sequence to generate the second wireless signal if the first signaling indicates that the first spreading sequence cannot be used to spread the first block of data bits.
As a sub-embodiment, the gNB410 apparatus comprises: at least one processor and at least one memory including computer program code; receiving a first wireless signal, wherein a first reference bit block is spread by a first spreading sequence to generate the first wireless signal, and the first reference bit block comprises a plurality of bits; transmitting first signaling indicating whether the first spreading sequence can be used to transmit a first block of data bits, measurements for the first wireless signal being used to determine content of the first signaling; receiving a second wireless signal, the first block of data bits being spread by the first spreading sequence to generate the second wireless signal if the first signaling indicates that the first spreading sequence can be used to spread the first block of data bits; the first block of data bits is spread by a second spreading sequence to generate the second wireless signal if the first signaling indicates that the first spreading sequence cannot be used to spread the first block of data bits.
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: receiving a first wireless signal, wherein a first reference bit block is spread by a first spreading sequence to generate the first wireless signal, and the first reference bit block comprises a plurality of bits; transmitting first signaling indicating whether the first spreading sequence can be used to transmit a first block of data bits, measurements for the first wireless signal being used to determine the content of the first signaling; receiving a second wireless signal, the first block of data bits being spread by the first spreading sequence to generate the second wireless signal if the first signaling indicates that the first spreading sequence can be used to spread the first block of data bits; the first block of data bits is spread by a second spreading sequence to generate the second wireless signal if the first signaling indicates that the first spreading sequence cannot be used to spread the first block of data bits.
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 antenna 460, the transmitter 456, the transmit processor 455, and the controller/processor 490 are used to transmit the first wireless signal in this application.
As a sub-embodiment, at least the first two of the antenna 460, the receiver 456, the receive processor 452, and the controller/processor 490 are used to receive the first signaling in this application.
As a sub-embodiment, at least the first two of the antenna 460, the transmitter 456, the transmit processor 455, and the controller/processor 490 are used to transmit the second wireless signal in this application.
As a sub-embodiment, at least the first two of the antenna 420, the receiver 416, the receive processor 412, and the controller/processor 440 are used to receive the first wireless signal in this application.
As a sub-embodiment, at least two of the antenna 420, the transmitter 416, the transmit processor 415, and the controller/processor 440 are used to transmit the first signaling in this application.
As a sub-embodiment, at least the first two of the antenna 420, the receiver 416, the receive processor 412, and the controller/processor 440 are used to receive the second wireless signal in this application.
Example 5
Embodiment 5 illustrates a flow chart of uplink transmission, as shown in fig. 5. In fig. 5, the base station N1 is a maintenance base station of the serving cell of the user equipment U2.
ForBase station N1The first wireless signal is received in step S11, the first signaling is transmitted in step S12, and the second wireless signal is received in step S13.
For theUser equipment U2In step S21, a first wireless signal is transmitted, in step S22, a first signaling is received, and in step S23, a second wireless signal is transmitted.
In embodiment 5, a first reference bit block is spread by a first spreading sequence to generate the first wireless signal, wherein the first reference bit block comprises a plurality of bits; the first signaling indicates whether the first spreading sequence can be used to transmit a first block of data bits, measurements for the first wireless signal being used to determine content of the first signaling; generating the second wireless signal by the first block of data bits being spread by the first spreading sequence if the first signaling indicates that the first spreading sequence can be used to spread the first block of data bits; the first block of data bits is spread by a second spreading sequence to generate the second wireless signal if the first signaling indicates that the first spreading sequence cannot be used to spread the first block of data bits.
As an embodiment, the first signaling indicates the second spreading sequence.
As an embodiment, the user equipment determines the second spreading sequence by itself.
As an embodiment, the first signaling indicates whether a spreading sequence in a first spreading sequence group can be used to spread the first data bit block, the first spreading sequence belonging to the first spreading sequence group.
As an embodiment, the first signaling indicates that a spreading sequence in a second set of spreading sequences is used to spread the first block of data bits, the second set of spreading sequences not including the first spreading sequence.
As an embodiment, the user equipment determines by itself whether to transmit the second wireless signal.
As an embodiment, the first block of reference bits is transmitted periodically.
Example 6
Example 6 illustrates a spreading sequence in the present application, as shown in fig. 6.
In embodiment 6, the spreading sequence in this application is used to spread a modulation symbol string obtained after constellation mapping of a bit block, where the number of the spread modulation symbols is greater than the number of the modulation symbols obtained after constellation mapping of the bit block, and the number of the spread modulation symbols is determined by the length of the spreading sequence and the number of the modulation symbols obtained after constellation mapping of the bit block.
As an embodiment, the spreading sequence spreads each modulation symbol in the string of modulation symbols.
As an example, the elements in the spreading sequence consist of 1 and-1.
As an example, the elements in the spreading sequence consist of 1 and 0.
As an example, the elements in the spreading sequence consist of 1, -1 and 0.
As an embodiment, the spreading sequence is a sparse sequence with 0 in the majority.
In one embodiment, the spreading sequence is a Zadoff-Chu sequence.
As an embodiment, the spreading sequence is a complex sequence.
As an embodiment, the constellation mapping is QPSK mapping.
As one embodiment, the constellation mapping is a 16QAM mapping.
Example 7
Embodiment 7 exemplifies the first wireless signal generation in the present application, as shown in fig. 7.
In embodiment 7, the first spreading sequence in this application is used to spread modulation symbols obtained after bit scrambling and constellation mapping of the first reference bit block in this application, and the result of spreading obtains the first radio signal in this application after resource mapping, precoding and multi-carrier symbol generation.
As one embodiment, multiple antennas are used to transmit the first wireless signal.
As an embodiment, the resource mapping refers to resource granule mapping (RE mapping).
As an embodiment, the multicarrier symbol generation refers to OFDM symbol generation.
For one embodiment, the multi-carrier symbol generation refers to DFT-s-OFDM symbol generation.
As an embodiment, the identification of the user equipment in the present application is used for bit scrambling.
As an embodiment, the first spreading sequence is a sparse sequence.
In one embodiment, the first spreading sequence is a Zadoff-Chu sequence.
Example 8
Embodiment 8 illustrates second wireless signal generation in the present application, as shown in fig. 8.
In embodiment 8, the target spreading sequence is used to spread the modulation symbols obtained after bit scrambling and constellation mapping of the first data bit block in this application, and the result of spreading is subjected to resource mapping, precoding, and multi-carrier symbol generation to obtain the second wireless signal in this application.
As one embodiment, multiple antennas are used to transmit the second wireless signal.
As an embodiment, the first signaling in this application indicates that the first spreading sequence in this application can be used to spread the first data bit block, and the target spreading sequence is the first spreading sequence.
As an embodiment, the first signaling in this application indicates that a first spreading sequence in this application cannot be used to spread the first data bit block, and the target spreading sequence is a second spreading sequence in this application, and the second spreading sequence is different from the first spreading sequence.
Example 9
Embodiment 9 illustrates the periodic transmission of a first block of reference bits in the present application, as shown in fig. 9.
In embodiment 9, the first reference bit block is transmitted periodically with a time interval T between two adjacent transmissions.
As an embodiment, the resource occupied by the first reference bit block in the frequency domain is fixed.
As an embodiment, the first reference bit block is periodically transmitted in a frequency hopping manner.
As an embodiment, the transmission period of the first reference bit block is fixed by default.
As an embodiment, a transmission period of the first reference bit block is preconfigured.
As an embodiment, the first block of reference bits is periodically transmitted within a first window of time.
As an embodiment, a different spreading sequence within a second time window is used for transmitting the first block of reference bits.
As an embodiment, the same spreading sequence is used for transmitting the first reference bit block within a third time window.
As an example, the time unit of T is ms.
As an embodiment, T is a positive integer number of multicarrier symbols.
As an embodiment, the T is a positive integer number of slots.
As one embodiment, the T is a positive integer number of subframes.
Example 10
Embodiment 10 illustrates a block diagram of a processing apparatus used in a user equipment, as shown in fig. 10. In fig. 10, the ue processing apparatus 1000 is mainly composed of a first transmitter module 1001, a second receiver module 1002 and a third transmitter module 1003.
The first transmitter module 1001 transmits a first wireless signal; the second receiver module 1002 receives the first signaling; the third transmitter module 1003 transmits the second wireless signal.
In embodiment 10, a first block of reference bits is spread with a first spreading sequence to generate the first wireless signal, the first block of reference bits comprising a plurality of bits; the first signaling indicates whether the first spreading sequence can be used to transmit a first block of data bits, measurements for the first wireless signal being used to determine content of the first signaling; generating the second wireless signal by the first block of data bits being spread by the first spreading sequence if the first signaling indicates that the first spreading sequence can be used to spread the first block of data bits; the first block of data bits is spread by a second spreading sequence to generate the second wireless signal if the first signaling indicates that the first spreading sequence cannot be used to spread the first block of data bits.
As a sub-embodiment, the first transmitter module 1001 includes the transmitter 456 and the transmission processor 455 in embodiment 4.
As a sub-embodiment, the second receiver module 1002 includes the receiver 456 and the receive processor 452 in embodiment 4.
As a sub-embodiment, the third transmitter module 1003 includes the transmitter 456 and the transmission processor 455 in embodiment 4.
As a sub-embodiment, the first transmitter module 1001, the second receiver module 1002 and the third transmitter module 1003 all include the antenna 460 of embodiment 4.
As a sub-embodiment, the first signaling indicates the second spreading sequence.
As a sub-embodiment, the user equipment determines the second spreading sequence itself.
As a sub-embodiment, the first signaling indicates whether a spreading sequence in a first spreading sequence group can be used to spread the first block of data bits, the first spreading sequence belonging to the first spreading sequence group.
As a sub-embodiment, the first signaling indicates that a spreading sequence in a second set of spreading sequences is used to spread the first block of data bits, the second set of spreading sequences not including the first spreading sequence.
As a sub-embodiment, the user equipment determines by itself whether to transmit the second wireless signal.
As a sub-embodiment, the first block of reference bits is transmitted periodically.
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 110 is mainly composed of a first receiver module 1101, a second transmitter module 1102 and a third receiver module 1103.
The first receiver module 1101 receives a first wireless signal, the second transmitter module 1102 transmits a first signaling, and the third receiver module 1103 receives a second wireless signal.
In embodiment 11, a first block of reference bits is spread by a first spreading sequence to generate the first wireless signal, the first block of reference bits comprising a plurality of bits; the first signaling indicates whether the first spreading sequence can be used to transmit a first block of data bits, measurements on the first wireless signal being used to determine the content of the first signaling; if the first signaling indicates that the first spreading sequence can be used to spread the first block of data bits, the first block of data bits is spread by the first spreading sequence to generate the second wireless signal; the first block of data bits is spread by a second spreading sequence to generate the second wireless signal if the first signaling indicates that the first spreading sequence cannot be used to spread the first block of data bits.
As a sub-embodiment, the first receiver module 1101 includes a receiver 416 and a receive processor 412.
As a sub-embodiment, the second transmitter module 1102 includes a transmitter 416 and a transmit processor 415.
As a sub-embodiment, the third receiver module 1103 includes a receiver 416 and a receive processor 412.
As a sub-embodiment, the first receiver module 1101, the second transmitter module 1102, and the third receiver module 1103 all include an antenna 420.
As a sub-embodiment, the first signaling indicates the second spreading sequence.
As a sub-embodiment, the sender of the second wireless signal determines the second spreading sequence itself.
As a sub-embodiment, the first signaling indicates whether a spreading sequence in a first spreading sequence group can be used to spread the first block of data bits, the first spreading sequence belonging to the first spreading sequence group.
As a sub-embodiment, the first signaling indicates that a spreading sequence in a second set of spreading sequences is used to spread the first block of data bits, the second set of spreading sequences not including the first spreading sequence.
As a sub-embodiment, the sender of the second wireless signal determines by himself whether to send the second wireless signal.
As a sub-embodiment, the first block of reference bits is transmitted periodically.
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 foregoing embodiments may be implemented in the form of hardware, or may be implemented in the form of software functional modules, and the present application is not limited to any specific 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 (28)
1. A method in a user equipment used for wireless communication, comprising:
transmitting a first wireless signal, wherein a first reference bit block is spread by a first spreading sequence to generate the first wireless signal, and the first reference bit block comprises a plurality of bits;
receiving first signaling indicating whether the first spreading sequence can be used to transmit a first block of data bits, measurements for the first wireless signal being used to determine content of the first signaling;
transmitting a second wireless signal, the first block of data bits being spread by the first spreading sequence generating the second wireless signal if the first signaling indicates that the first spreading sequence can be used to spread the first block of data bits; the first block of data bits is spread by a second spreading sequence to generate the second wireless signal if the first signaling indicates that the first spreading sequence cannot be used to spread the first block of data bits.
2. The method of claim 1, wherein the first signaling indicates the second spreading sequence.
3. The method according to claim 1 or 2, wherein the user equipment determines the second spreading sequence by itself.
4. Method according to claim 1 or 2, characterized in that the first signaling indicates whether a spreading sequence in a first set of spreading sequences can be used for spreading the first block of data bits, the first spreading sequence belonging to the first set of spreading sequences.
5. The method of claim 4, wherein the first signaling indicates that a spreading sequence in a second set of spreading sequences is used to spread the first block of data bits, and wherein the second set of spreading sequences does not include the first spreading sequence.
6. The method according to claim 1 or 2, wherein the user equipment determines by itself whether to transmit the second wireless signal.
7. The method according to claim 1 or 2, characterized in that the first block of reference bits is transmitted periodically.
8. A method in a base station device used for wireless communication, comprising:
receiving a first wireless signal, wherein a first reference bit block is spread by a first spreading sequence to generate the first wireless signal, and the first reference bit block comprises a plurality of bits;
transmitting first signaling indicating whether the first spreading sequence can be used to transmit a first block of data bits, measurements for the first wireless signal being used to determine content of the first signaling;
receiving a second wireless signal, the first block of data bits being spread by the first spreading sequence to generate the second wireless signal if the first signaling indicates that the first spreading sequence can be used to spread the first block of data bits; the first block of data bits is spread by a second spreading sequence to generate the second wireless signal if the first signaling indicates that the first spreading sequence cannot be used to spread the first block of data bits.
9. The method of claim 8, wherein the first signaling indicates the second spreading sequence.
10. The method according to claim 8 or 9, characterized in that the sender of the second wireless signal determines the second spreading sequence itself.
11. Method according to claim 8 or 9, wherein the first signaling indicates whether a spreading sequence in a first set of spreading sequences can be used for spreading the first block of data bits, the first spreading sequence belonging to the first set of spreading sequences.
12. The method of claim 11, wherein the first signaling indicates that a spreading sequence in a second set of spreading sequences is used to spread the first block of data bits, and wherein the second set of spreading sequences does not include the first spreading sequence.
13. The method according to claim 8 or 9, wherein the sender of the second wireless signal determines itself whether to send the second wireless signal.
14. The method according to claim 8 or 9, characterized in that the first block of reference bits is transmitted periodically.
15. A user device configured for wireless communication, comprising:
a first transmitter module configured to transmit a first wireless signal, wherein a first reference bit block is spread by a first spreading sequence to generate the first wireless signal, and the first reference bit block comprises a plurality of bits;
a second receiver module to receive first signaling indicating whether the first spreading sequence can be used to transmit a first block of data bits, measurements on the first wireless signal being used to determine content of the first signaling;
a third transmitter module that transmits a second wireless signal, the first block of data bits being spread by the first spreading sequence to generate the second wireless signal if the first signaling indicates that the first spreading sequence can be used to spread the first block of data bits; the first block of data bits is spread by a second spreading sequence to generate the second wireless signal if the first signaling indicates that the first spreading sequence cannot be used to spread the first block of data bits.
16. The UE of claim 15, wherein the first signaling indicates the second spreading sequence.
17. The UE of claim 15 or 16, wherein the UE determines the second spreading sequence by itself.
18. The user equipment according to claim 15 or 16, wherein the first signaling indicates whether a spreading sequence in a first set of spreading sequences can be used for spreading the first block of data bits, the first spreading sequence belonging to the first set of spreading sequences.
19. The user equipment of claim 18, wherein the first signaling indicates that a spreading sequence in a second set of spreading sequences is used to spread the first block of data bits, and wherein the second set of spreading sequences does not include the first spreading sequence.
20. The UE of claim 15 or 16, wherein the UE determines whether to transmit the second wireless signal by itself.
21. The user equipment according to claim 15 or 16, characterized in that the first block of reference bits is transmitted periodically.
22. A base station device used for wireless communication, comprising:
a first receiver module that receives a first wireless signal, a first block of reference bits being spread by a first spreading sequence to generate the first wireless signal, the first block of reference bits comprising a plurality of bits;
a second transmitter module to transmit first signaling indicating whether the first spreading sequence can be used to transmit a first block of data bits, measurements on the first wireless signal being used to determine the content of the first signaling;
a third receiver module that receives a second wireless signal, the first block of data bits being spread by the first spreading sequence to generate the second wireless signal if the first signaling indicates that the first spreading sequence can be used to spread the first block of data bits; the first block of data bits is spread by a second spreading sequence to generate the second wireless signal if the first signaling indicates that the first spreading sequence cannot be used to spread the first block of data bits.
23. The base station apparatus of claim 22, wherein the first signaling indicates the second spreading sequence.
24. The base station apparatus according to claim 22 or 23, wherein the second spreading sequence is determined by itself by a sender of the second wireless signal.
25. The base station device according to claim 22 or 23, wherein the first signaling indicates whether a spreading sequence in a first spreading sequence group can be used for spreading the first data bit block, the first spreading sequence belonging to the first spreading sequence group.
26. The base station device of claim 25, wherein the first signaling indicates that a spreading sequence in a second set of spreading sequences is used to spread the first block of data bits, and wherein the second set of spreading sequences does not include the first spreading sequence.
27. The base station apparatus according to claim 22 or 23, wherein a sender of the second wireless signal determines by itself whether to transmit the second wireless signal.
28. The base station device according to claim 22 or 23, characterized in that the first block of reference bits is transmitted periodically.
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