CN108024356B

CN108024356B - Transmission method and device

Info

Publication number: CN108024356B
Application number: CN201610977092.8A
Authority: CN
Inventors: 王宗杰; 唐臻飞; 栗忠峰; 吴宁; 彭金磷
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2016-11-04
Filing date: 2016-11-04
Publication date: 2021-12-28
Anticipated expiration: 2036-11-04
Also published as: CN108024356A

Abstract

The embodiment of the invention provides a transmission method and a transmission device. In the method, a base station configures guard intervals (GP) of a first resource and a second resource, wherein the subcarrier intervals of data channels mapped in the first resource and the second resource are the same, and the guard intervals (GP) of the first resource and the second resource are different; transmitting over the first resource and the second resource. Thus, the base station performs flexible resource allocation based on the UE.

Description

Transmission method and device

Technical Field

The present invention relates to the field of communications, and in particular, to a transmission method and apparatus.

Background

In a Time Division Duplex (TDD) system, in order to reduce interference between uplink and downlink transmissions of different users, a Guard Period (GP) is configured between the downlink transmission and the uplink transmission.

In the prior art, as shown in fig. 1, d (downlink) in the drawing indicates a resource for downlink transmission, u (uplink) indicates a resource for uplink transmission, the subcarrier intervals in the resource shown in fig. 1 are the same, and the GP lengths of the resources with the same subcarrier interval are configured the same, such as GP1, GP2, and GP 3. Therefore, for resources with the same subcarriers, the GP configuration is the same, that is, the GP configuration is cell-level configuration, which results in low resource configuration flexibility.

Disclosure of Invention

A transmission method and apparatus are described herein to enable flexible resource configuration.

In one aspect, an embodiment of the present application provides a transmission method. The method comprises the following steps: configuring guard intervals (GP) of a first resource and a second resource, wherein the subcarrier intervals of data channels mapped in the first resource and the second resource are the same, and the guard intervals (GP) of the first resource and the second resource are different; transmitting over the first resource and the second resource. Therefore, for the resources with the same data interval, the base station can configure different GPs, so that the resource configuration is more flexible.

In one possible design, the configuring a guard interval (GP) for the first resource and the second resource includes: configuring the length of GP; or configuring the length of the resource for uplink transmission and the length of the resource for downlink transmission. The length may be a number of symbols or a number of samples or a length of time. Specifically, the length of the GP may be configured, or the length of the resource for uplink transmission and the length of the resource for downlink transmission may be configured. For example, the position and length of the GP is configured; or configuring the position and length of the resource for uplink transmission and the position and length of the resource for downlink transmission, and further determining the position and length of the GP; or configuring the position and length of the GP, the position and length of the resource for uplink transmission, and the position and length of the resource for downlink transmission.

In another possible design, a resource corresponding to a GP in the first resource is a third resource, a resource corresponding to a GP in the second resource is a fourth resource, the first resource further includes a fifth resource, a time corresponding to a sum of the fifth resource and the third resource is the same as a time corresponding to the fourth resource, and the fifth resource is used for transmission of a control channel and/or a reference signal. Therefore, after the base station configures different GPs for different UEs, the resources corresponding to the parts with different GP lengths can be used for other purposes, such as transmission of control channels or reference signals, so that the resources are fully applied.

In another possible design, the data channel of the first resource is used for data transmission by the first UE; and the data channel of the second resource is used for carrying out data transmission of the second UE. The first UE and the second UE are different UEs or UEs in different groups, which is not limited in the present invention. Therefore, the base station carries out GP configuration based on different UEs, so that the resource configuration is more flexible. Specifically, the base station may perform configuration of the GP based on information of the UE, for example, a location interval between the UE and the base station, or a measurement result of the UE, and the like.

In another possible design, the first resource and the second resource are resources in the same time interval, that is, the first resource and the second resource are frequency division multiplexed resources in the frequency domain. Therefore, for the resources with the same data interval, the base station can configure different GPs, so that the resource configuration is more flexible.

In one possible design, the method provided by the above aspects may be performed by a base station. Under different application scenarios, the scheme provided by the above aspect can be implemented between the base station and the terminal; it can also be implemented between different terminals; it may also be implemented between different types of base stations, for example between a macro base station and a micro base station.

In another aspect, an embodiment of the present invention provides an apparatus for wireless communication, such as a base station. The base station has the function of realizing the base station behavior in the method. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above-described functions. The modules may be software and/or hardware.

In one possible design, the base station includes a processor and a transceiver in its structure, and the processor is configured to support the base station to perform the corresponding functions in the above method. The transceiver is used for supporting communication between the base station and the terminal, and transmitting information or instructions related to the method to the terminal. The base station may also include a memory, coupled to the processor, that retains program instructions and data necessary for the base station.

In one possible design, a base station includes a processing module configured to configure guard intervals (GP) of first resources and second resources, where subcarrier intervals of data channels mapped in the first resources and the second resources are the same, and the guard intervals (GP) of the first resources and the second resources are different; a transmission module, configured to transmit through the first resource and the second resource. The configuration module and the transmission module can also be used for executing corresponding functions in the method.

In yet another aspect, an embodiment of the present invention provides a computer storage medium for storing computer software instructions for the base station, which includes a program designed to execute the above aspects.

Compared with the prior art, the method provided by the invention can be used for carrying out flexible resource allocation.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the following drawings only reflect some embodiments of the invention, and that other embodiments or implementations of the invention will occur to those skilled in the art without inventive faculty. And all such embodiments or implementations are within the scope of the present invention.

Fig. 1 is a schematic diagram of a resource allocation.

FIG. 2 is a schematic diagram of a possible application scenario according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a possible system network to which embodiments of the present invention may be applied;

fig. 4 is a flowchart illustrating a transmission method according to an embodiment of the present invention;

fig. 5 is a schematic diagram of a resource allocation according to an embodiment of the present invention.

Fig. 6 is a schematic diagram of a resource allocation according to an embodiment of the present invention.

Fig. 7 is a schematic diagram of a resource allocation according to an embodiment of the present invention.

Fig. 8 is a schematic diagram of a resource allocation according to an embodiment of the present invention.

Fig. 9 is a schematic diagram of a resource allocation according to an embodiment of the present invention.

Fig. 10 is a schematic diagram of a resource allocation according to an embodiment of the present invention.

Fig. 11 is a schematic block diagram of a transmission apparatus provided in the implementation of the present invention.

FIG. 12 is a schematic diagram of a possible structure of the base station involved in the above embodiment

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention.

The network architecture and the service scenario described in the embodiment of the present invention are for more clearly illustrating the technical solution of the embodiment of the present invention, and do not limit the technical solution provided in the embodiment of the present invention, and it can be known by those skilled in the art that the technical solution provided in the embodiment of the present invention is also applicable to similar technical problems along with the evolution of the network architecture and the appearance of a new service scenario.

As shown in fig. 2, the terminal accesses an Internet Protocol (IP) Service Network, such as a Multimedia subsystem (IP Multimedia System, IMS) Network, a Packet Switched Streaming Service (PSS) Network, and the like, through a Radio Access Network (RAN) and a Core Network (CN). The technical solution described in the embodiments of the present invention may be applicable to an LTE system or other wireless communication systems using various radio Access technologies, for example, systems using Access technologies such as Code Division Multiple Access (CDMA), Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (SC-FDMA), and the like. In addition, the method can also be applied to an evolution system subsequent to the LTE system, such as a fifth Generation (5G) system. For clarity, the LTE system is only exemplified here. In the LTE system, an Evolved Universal Terrestrial Radio Access Network (E-UTRAN) is used as a Radio Access Network, and an Evolved Packet Core (EPC) is used as a Core Network. The terminal accesses the IMS network through the E-UTRAN and the EPC.

In the embodiments of the present invention, the terms "network" and "system" are often used interchangeably, but those skilled in the art can understand the meaning. The terminal according to the embodiment of the present invention may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem, and various forms of User Equipment (UE), Mobile Station (MS), and the like. For convenience of description, in the embodiments of the present invention, the above-mentioned devices are collectively referred to as a terminal. The base station according to the embodiment of the present invention refers to a device deployed in a radio access network to provide a terminal with a wireless communication function. The base stations may include various forms of macro base stations, micro base stations, relay stations, access points, and the like. The Base Station may also be a Base Station Controller (BSC) in a Global System for Mobile Communications (GSM) or CDMA System, or a Radio Network Controller (RNC) in a Wideband Code Division Multiple Access (WCDMA) System, or a Base Station (BS) or a centralized server in various communication systems, or a combination of a Base Station and a Controller. In systems using different radio access technologies, names of devices having functions of base stations may be different, for example, in an LTE system, referred to as an evolved node B (eNodeB or eNB), in a third Generation (3G) system, referred to as a node B (NodeB), or a gNB, and so on. For convenience of description, in the embodiments of the present invention, the above-mentioned apparatuses providing a terminal with a wireless communication function are collectively referred to as a base station or a BS. It should be understood that the base station related to the embodiment of the present invention includes both a base station in an existing communication system and a base station in a communication system (for example, a 5G communication system) that may appear in the future, and the embodiment of the present invention is not limited.

Fig. 3 is a schematic diagram of a possible system according to an embodiment of the present invention, which mainly includes a base station and a terminal, where the base station and the terminal may communicate with each other through a cellular network. For example, the system shown in fig. 2 may be a Time Division Duplex (TDD) system, or may also be a Frequency Division Duplex (FDD) system; for another example, the system shown in fig. 2 may be a single carrier system or a multi-carrier system; for another example, the system shown in fig. 2 may be a high-frequency communication system (for example, a system in a frequency band higher than 6GHz, and the specific definition of the high frequency may refer to the requirement of the standard or the system), or may be a low-frequency communication system (for example, a system in a frequency band lower than 6GHz, and the specific definition of the low frequency may refer to the requirement of the standard or the system), which is not limited by the present invention.

It is understood that the solution of the embodiment of the present invention can be applied to other system architectures besides the system architecture shown in fig. 2. For example, the method can also be applied to a system architecture containing a macro base station and a micro base station.

The embodiments of the present invention will be described in further detail below based on the common aspects related to the embodiments of the present invention described above.

Fig. 4 shows that an embodiment of the present invention provides a transmission method, and a base station and a terminal based on the method.

S401, a base station configures guard intervals (GP) of a first resource and a second resource, wherein the GP of the first resource and the GP of the second resource are different;

the subcarrier intervals of the data channels mapped in the first resource and the second resource are the same

The first resource and the second resource are resources in the same time interval, that is, the first resource and the second resource are frequency division multiplexing and used for mapping or carrying a physical channel and/or a physical signal. The same time interval may be a same scheduling unit, subframe, time slot or Transmission Time Interval (TTI), and the physical channel and/or physical signal includes: synchronization signals, broadcast channels, data channels, control channels, reference signals, and the like. The signal may also be referred to as a channel, the reference signal may be referred to as a pilot, etc. The invention is not limited in this regard.

Specifically, different GP lengths are configured for different UEs or UEs in different groups, and the base station performs GP configuration based on information of the UEs, for example, location information and measurement information of the base station, which is not limited in the present invention.

Optionally, for a first UE, the base station configures the GP length of the first channel, and for a second UE, the base station configures the GP length of the second channel. Specifically, the length of the GP may be configured, or the length of the resource for uplink transmission and the length of the resource for downlink transmission may be configured. For example, the position and length of the GP is configured; or configuring the position and length of the resource for uplink transmission and the position and length of the resource for downlink transmission, and further determining the position and length of the GP; or configuring the position and length of the GP, the position and length of the resource for uplink transmission, and the position and length of the resource for downlink transmission. The invention is not limited in this regard. The first UE and the second UE are different UEs, or the first UE and the second UE are UEs in different groups.

S402, transmission is carried out through the first resource and the second resource.

Therefore, based on the method provided by the embodiment of the invention, the base station configures different GPs for different UEs, so that the resource configuration is more flexible.

Optionally, a resource corresponding to a GP in the first resource is a third resource, a resource corresponding to a GP in the second resource is a fourth resource, the first resource further includes a fifth resource, a time corresponding to a sum of the fifth resource and the third resource is the same as a time corresponding to the fourth resource, and the fifth resource is used for transmission of a control channel or a reference signal. For example, the fifth resource is used for uplink control channel transmission, downlink control channel transmission or Reference Signal (RS) transmission, or at least one of the three types of channel/Signal transmission, specifically, the Reference Signal includes an RS for data demodulation, an RS for control demodulation, or a Sounding Reference Signal (SRS) for channel measurement, or at least one of the three types of Signal, which is not limited in the present invention. Therefore, the additional resource compared with the GP of the first resource configuration and the GP of the second resource configuration is fully utilized, and the additional resource is the fifth resource described above, which is not described again in the present invention.

Specifically, in the resource configuration shown in fig. 5, a subcarrier interval of a data channel mapped by a first resource and a second resource is 15KHZ, where d (downlink) is a resource for downlink transmission, u (uplink) is a resource for uplink transmission, a base station configures different GPs for different UEs, for example, GP1 is configured for the first UE, GP2 is configured for the second UE, GP1 is 3 symbols corresponding to 60KHZ, GP2 is 1 symbol length corresponding to 15KHZ, resources corresponding to a portion of the first UE where GP1 length is different from GP2 length of the second UE are used for transmission of downlink Reference Signals (RS), and the resource corresponding to the different portion is the fifth resource mentioned in the above embodiment, which is not described again in this disclosure. Further, the subcarrier spacing of the Reference Signal (RS) is configured to be 60KHZ for the uniformity of the subcarrier spacing of the Reference Signal (RS).

Optionally, as in the resource configuration shown in fig. 6, the subcarrier spacing of the data channel mapped by the first resource and the second resource is 15KHZ, the base station configures different GPs for different UEs, for example, configures GP1 for the first UE, configures GP2 for the second UE, where the length of GP1 is 3 symbol lengths corresponding to 60KHZ, the length of GP2 is 1 symbol length corresponding to 15KHZ, and the resource corresponding to the portion of the first UE where the length of GP1 is different from the length of GP2 of the second UE is used for Uplink control channel (UCI) transmission, or for Reference Signal (RS) transmission, or for SRS, which is not limited in this respect.

Optionally, as in the resource configuration shown in fig. 7, the subcarrier spacing of the data channel mapped by the first resource and the second resource is 15KHZ, the base station configures different GPs for different UEs, for example, configures GP1 for the first UE, configures GP2 for the second UE, where the length of GP1 is 3 symbol lengths corresponding to 60KHZ, the length of GP2 is 1 symbol length corresponding to 15KHZ, and the resource corresponding to the portion of the first UE where the length of GP1 is different from the length of GP2 of the second UE is used for Uplink control channel (UCI) transmission, or for Reference Signal (RS) transmission, or for SRS, which is not limited in this respect. Further, the sub-carrier interval for configuring the subsequent uplink resource is 60 KHZ.

Optionally, in the resource configuration shown in fig. 8, a subcarrier interval of a data channel mapped by the first resource and the second resource is 15KHZ, where d (downlink) is a resource for downlink transmission, u (uplink) is a resource for uplink transmission, the base station configures different GPs for different UEs, for example, GP1 is configured for the first UE, GP2 is configured for the second UE, GP1 has a length of 3 symbols corresponding to 60KHZ, GP2 has a length of 1 symbol corresponding to 15KHZ, a part of the resource corresponding to a part of the GP1 length of the first UE that is different from the GP2 length of the second UE is used for downlink Control (Control, Ctrl) channel transmission, and further, in order to Control consistency of subcarrier intervals of the Ctrl channels, the subcarrier interval for controlling Ctrl channel transmission is configured to be 60 KHZ.

Optionally, in the resource configuration shown in fig. 9, a subcarrier interval of a data channel mapped by the first resource and the second resource is 15KHZ, where d (downlink) is a resource for downlink transmission, u (uplink) is a resource for uplink transmission, the base station configures different GPs for different UEs, for example, GP1 is configured for the first UE, GP2 is configured for the second UE, GP1 has a length of 3 symbols corresponding to 60KHZ, GP2 has a length of 1 symbol corresponding to 15KHZ, and a part of the resource corresponding to a part of the first UE, where the length of GP1 is different from the length of GP2 of the second UE, is used for downlink Control (Control, Ctrl) channel transmission.

Optionally, in the resource configuration shown in fig. 10, a subcarrier interval of a data channel mapped by the first resource and the second resource is 15KHZ, where d (downlink) is a resource for downlink transmission, u (uplink) is a resource for uplink transmission, the base station configures different GPs for different UEs, for example, GP1 is configured for the first UE, GP2 is configured for the second UE, GP1 is 3 symbols long corresponding to 60KHZ, GP2 is 1 symbols long corresponding to 15KHZ, and a part of the first UE, where GP1 length is different from GP2 length of the second UE, is used for transmission of an uplink Reference Signal (RS).

Therefore, based on the embodiment of the present invention, the base station configures different GP lengths for different UEs, so that the resource configuration is more flexible, and additional resources are fully utilized to improve the resource utilization rate.

Fig. 11 is a schematic block diagram of a transmission device, which may be a base station, according to an embodiment of the present invention, which is not limited in this respect. As shown in fig. 11, the apparatus includes a processing module 1101 and a transmission module 1102.

A processing module 1101, configured to configure a guard interval (GP) of a first resource and a guard interval (GP) of a second resource, where subcarrier intervals of data channels mapped in the first resource and the second resource are the same, and the guard intervals (GP) of the first resource and the guard intervals (GP) of the second resource are different;

a transmission module 1102, configured to transmit through the first resource and the second resource.

Specifically, the configuring a guard interval (GP) of the first resource and the second resource includes: configuring the length of GP; or configuring the length of the resource for uplink transmission and the length of the resource for downlink transmission.

Optionally, a resource corresponding to a GP in the first resource is a third resource, a resource corresponding to a GP in the second resource is a fourth resource, the first resource further includes a fifth resource, a time corresponding to a sum of the fifth resource and the third resource is the same as a time corresponding to the fourth resource, and the fifth resource is used for transmission of a control channel or a reference signal.

Wherein the data channel of the first resource is used for data transmission of a first UE; and the data channel of the second resource is used for carrying out data transmission of the second UE. The first resource and the second resource are resources in the same time interval.

Therefore, the base station configures different GP lengths for different UEs, so that the resource configuration is more flexible, and additional resources are fully utilized to improve the resource utilization rate.

Fig. 12 is a schematic diagram of a possible structure of the base station involved in the above embodiment. The base station includes a transmitter/receiver (transceiver) 1201, a controller/processor 1202, a memory 1203 and a communication unit 1204. The transmitter/receiver 1201 is used to support information transceiving between a base station and a UE, and radio communication between the UE and other UEs. The controller/processor 1202 performs various functions for communicating with the UEs. In the uplink, uplink signals from the UE are received via the antenna, conditioned by the receiver 1201, and further processed by the controller/processor 1202 to recover traffic data and signaling information sent by the UE. On the downlink, traffic data and signaling messages are processed by controller/processor 1202 and conditioned by transmitter 1201 to generate a downlink signal, which is transmitted via the antenna to the UE. Controller/processor 1202 may also perform the processes of fig. 2-11 relating to a base station and/or other processes for the techniques described herein. A memory 1203 is used to store program codes and data for the base station. The communication unit 1204 is used for supporting the base station to communicate with other network entities.

It will be appreciated that fig. 12 only shows a simplified design of a base station. In practice, the base station may comprise any number of transmitters, receivers, processors, controllers, memories, communication units, etc., and all base stations that can implement the present invention are within the scope of the present invention.

The controller/processor for performing the functions of the above base station, UE or core network device of the present invention may be a Central Processing Unit (CPU), general purpose processor, Digital Signal Processor (DSP), Application Specific Integrated Circuit (ASIC), Field Programmable Gate Array (FPGA) or other programmable logic device, transistor logic device, hardware component or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others.

The steps of a method or algorithm described in connection with the disclosure herein may be embodied in hardware or in software instructions executed by a processor. The software instructions may consist of corresponding software modules that may be stored in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC. Additionally, the ASIC may reside in user equipment. Of course, the processor and the storage medium may reside as discrete components in user equipment.

Those skilled in the art will recognize that, in one or more of the examples described above, the functions described in this invention may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present invention should be included in the scope of the present invention.

Claims

1. A method of transmission, comprising:

configuring guard intervals GP of a first resource and a second resource, wherein the subcarrier intervals of data channels mapped in the first resource and the second resource are the same, the subcarrier interval of the resource corresponding to the time interval of the GP in the first resource is larger than the subcarrier interval of the resource corresponding to the time interval of the GP in the second resource, and the guard intervals GP of the first resource and the second resource are different;

transmitting over the first resource and the second resource.

2. The method according to claim 1, wherein the configuring the guard interval GP of the first resource and the second resource comprises:

configuring the length of GP;

or configuring the length of the resource for uplink transmission and the length of the resource for downlink transmission.

3. The method according to claim 1, wherein the resource corresponding to the GP in the first resource is a third resource, the resource corresponding to the GP in the second resource is a fourth resource, the first resource further includes a fifth resource, a time corresponding to a sum of the fifth resource and the third resource is the same as a time corresponding to the fourth resource, and the fifth resource is used for transmission of a control channel and/or a reference signal.

4. The method of claim 1, wherein the data channel of the first resource is used for data transmission for a first UE; and the data channel of the second resource is used for carrying out data transmission of the second UE.

5. The method of any of claims 1-4, wherein the first resource and the second resource are resources in a same time interval.

6. A base station comprising a processor and a transceiver, the processor configured to support the base station to perform the method of any of claims 1-5.