CN106559203B

CN106559203B - Method and device for transmitting control signaling

Info

Publication number: CN106559203B
Application number: CN201510633771.9A
Authority: CN
Inventors: 刘瑾; 吴晔; 毕晓艳
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2015-09-29
Filing date: 2015-09-29
Publication date: 2021-06-08
Anticipated expiration: 2035-09-29
Also published as: CN106559203A; WO2017054745A1

Abstract

The embodiment of the invention provides a method and a device for transmitting control signaling, wherein the method comprises the following steps: bearing a control signaling on a general control channel, wherein the general control channel occupies M subcarriers in a system bandwidth on a frequency domain, M is a positive integer which is greater than or equal to 1 and less than the total number of the subcarriers in the system bandwidth, and the control signaling comprises a common control signaling which can be used for indicating the operation actions of two or more terminal devices; the control signaling is sent over the common control channel. This can improve the efficiency of use of transmission resources.

Description

Method and device for transmitting control signaling

Technical Field

The present invention relates to the field of communications, and more particularly, to a method and apparatus for transmitting control signaling.

Background

The Massive multiple input multiple output (Massive MIMO) technology is one of the key technologies of the future 5G mobile communication systems. It is intended to serve a limited number of users by using inexpensive, low-power, low-precision active antenna devices on a large scale. Although the transmission power of each antenna unit is not high, the spatial characteristics are effectively utilized through the cooperative work of large-scale antennas, the radiation energy is focused in a small space area, namely, a narrower radiation beam is aimed at a user, and therefore the throughput and the energy use efficiency are greatly improved.

The design scheme of the full-width control channel of the existing 4G Long Term Evolution (LTE) system/LTE-Advanced (Advanced) system causes great resource waste. Therefore, there is a need to provide a new method for transmitting control signaling.

Disclosure of Invention

The invention provides a method and a device for transmitting control signaling, which can save transmission resources.

In a first aspect, a method for transmitting control signaling is provided, including: bearing a control signaling on a general control channel, wherein the general control channel occupies M subcarriers in a system bandwidth on a frequency domain, M is a positive integer which is greater than or equal to 1 and less than the total number of the subcarriers in the system bandwidth, and the control signaling comprises a common control signaling which can be used for indicating the operation actions of two or more terminal devices; the control signaling is sent over the common control channel.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the common control signaling is control signaling that is scrambled by using an identifier that can be used by two or more terminal devices.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the identifier that can be used by two or more terminal devices includes one or more of the following identifiers: system information-radio network temporary identity SI-RNTI, random access response-radio network temporary identity RA-RNTI and paging-radio network temporary identity P-RNTI.

With reference to the first aspect, or the first or second possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the control signaling further includes user-specific control signaling that indicates only one terminal device to operate; the user-specific control signaling includes at least one of the following information: resource allocation information, modulation and coding scheme information, hybrid automatic repeat request, HARQ, information, precoding information, power control information of an uplink data channel or an uplink control channel, reference signal indication information, trigger indication information of channel information measurement, trigger indication information of sounding reference signal, and indication information of carrier component.

With reference to the first aspect or any one of the first to third possible implementation manners of the first aspect, in a fourth possible implementation manner of the first aspect, the sending the control signaling through the common control channel includes: the control signaling is transmitted over at least one control signaling element CCE on the common control channel.

With reference to the first aspect or the first to fourth possible implementation manners of the first aspect, in a fifth possible implementation manner of the first aspect, the common control channel includes a common search space and/or a user-specific search space.

With reference to the fifth possible implementation manner of the first aspect, in a sixth possible implementation manner of the first aspect, the common control signaling is carried on the common search space.

With reference to the fifth or sixth possible implementation manner of the first aspect, in a seventh possible implementation manner of the first aspect, the user-specific control signaling is carried on at least one of the common search space and the user-specific search space.

With reference to the first aspect or any one of the first to seventh possible implementation manners of the first aspect, in an eighth possible implementation manner of the first aspect, the M subcarriers are discretely distributed.

With reference to the first aspect or any one of the first to eighth possible implementation manners of the first aspect, in a ninth possible implementation manner of the first aspect, at least one of a data channel and a user-specific control channel and the common control channel occupy frequency domain resources in a frequency division multiplexing manner, where the data channel is a channel for carrying data, and the user-specific control channel is a channel for carrying only user-specific control signaling.

With reference to the first aspect or any one of the first to ninth possible implementation manners of the first aspect, in a tenth possible implementation manner of the first aspect, the common control channel occupies N symbols in one subframe in a time domain, where N is any positive integer smaller than a total number of symbols included in one subframe.

With reference to the ninth possible implementation manner of the first aspect, in an eleventh possible implementation manner of the first aspect, the common control channel and the data channel use different precoding manners, and/or different beamforming manners, and/or different power allocation schemes.

With reference to the ninth possible implementation manner of the first aspect, in a twelfth possible implementation manner of the first aspect, the common control channel and the user-specific control channel are different in a precoding manner, and/or a beamforming manner, and/or a power allocation scheme.

With reference to the eleventh possible implementation manner of the first aspect, in a thirteenth possible implementation manner of the first aspect, the allocation of the transmission power of the common control channel precedes the allocation of the transmission power of the data channel.

With reference to the twelfth possible implementation manner of the first aspect, in a fourteenth possible implementation manner of the first aspect, the allocation of the transmission power of the general control channel precedes the allocation of the transmission power of the user-specific control channel.

With reference to the first aspect or any one of the first to fourteenth possible implementation manners of the first aspect, in a fifteenth possible implementation manner of the first aspect, the M subcarriers are divided into L subcarrier sets, each subcarrier set in the L subcarrier sets includes at least one subcarrier, L is less than or equal to M, and precoding manners and/or beamforming manners and/or power allocation schemes adopted by the L subcarrier sets are different.

With reference to the fifteenth possible implementation manner of the first aspect, in a sixteenth possible implementation manner of the first aspect, the allocation priorities of the transmission powers of the L subcarrier sets are different.

In a second aspect, a method for transmitting control signaling is provided, including: receiving a control signaling through a general control channel, wherein the general control channel occupies M subcarriers in a system bandwidth on a frequency domain, M is a positive integer which is greater than or equal to 1 and less than the total number of the subcarriers in the system bandwidth, and the control signaling comprises a common control signaling which can be used for indicating the operation actions of two or more terminal devices; the control signaling is demodulated.

With reference to the second aspect, in a first possible implementation manner of the first aspect, the common control signaling is control signaling scrambled by using an identifier that can be used by two or more terminal devices.

With reference to the first possible implementation manner of the second aspect, in a second possible implementation manner of the second aspect, the identifier that can be used by two or more terminal devices includes one or more of the following identifiers: system information-radio network temporary identity SI-RNTI, random access response-radio network temporary identity RA-RNTI and paging-radio network temporary identity P-RNTI.

With reference to the second aspect, or the first or second possible implementation manner of the second aspect, in a third possible implementation manner of the second aspect, the control signaling further includes user-specific control signaling that indicates only one terminal device operation action, where the user-specific control signaling includes at least one of the following information: resource allocation information, modulation and coding scheme information, hybrid automatic repeat request, HARQ, information, precoding information, power control information of an uplink data channel or an uplink control channel, reference signal indication information, trigger indication information of channel information measurement, trigger indication information of sounding reference signal, and indication information of carrier component.

With reference to the second aspect, or any possible implementation manner of the first to third possible implementation manners of the second aspect, in a fourth possible implementation manner of the second aspect, the receiving the control signaling through the common control channel includes:

the control signaling is received over at least one control signaling element CCE on the common control channel.

With reference to the second aspect or the first to fourth possible implementation manners of the second aspect, in a fifth possible implementation manner of the second aspect, the common control channel includes a common search space and/or a user-specific search space.

With reference to the fifth possible implementation manner of the second aspect, in a sixth possible implementation manner of the second aspect, the common control signaling is carried on the common search space.

With reference to the fifth or sixth possible implementation manner of the second aspect, in a seventh possible implementation manner of the second aspect, the user-specific control signaling is carried on at least one of the common search space and the user-specific search space.

With reference to the second aspect or any one of the first to seventh possible implementation manners of the second aspect, in an eighth possible implementation manner of the second aspect, the M subcarriers are discretely distributed.

With reference to the second aspect or any one of the first to eighth possible implementation manners of the second aspect, in a ninth possible implementation manner of the second aspect, at least one of a data channel and a user-specific control channel and the common control channel occupy frequency domain resources in a frequency division multiplexing manner, where the data channel is a channel carrying data, and the user-specific control channel is a channel carrying only user-specific control signaling.

With reference to the second aspect, or any one of the first to ninth possible implementation manners of the second aspect, in a tenth possible implementation manner of the second aspect, the common control channel occupies N symbols in one subframe in a time domain, where N is any positive integer smaller than a total number of symbols included in one subframe.

With reference to the ninth possible implementation manner of the second aspect, in an eleventh possible implementation manner of the second aspect, the common control channel and the data channel use different precoding manners, and/or different beamforming manners, and/or different power allocation schemes.

With reference to the ninth possible implementation manner of the second aspect, in a twelfth possible implementation manner of the second aspect, the common control channel and the user-specific control channel use different precoding manners, and/or different beamforming manners, and/or different power allocation schemes.

With reference to the eleventh possible implementation manner of the second aspect, in a thirteenth possible implementation manner of the second aspect, the allocation of the transmission power of the common control channel precedes the allocation of the transmission power of the data channel.

With reference to the twelfth possible implementation manner of the second aspect, in a fourteenth possible implementation manner of the second aspect, the allocation of the transmission power of the general control channel is prior to the allocation of the transmission power of the user-specific control channel.

With reference to the second aspect, or any one of the first to fourteenth possible implementation manners of the second aspect, in a fifteenth possible implementation manner of the second aspect, the M subcarriers are divided into L subcarrier sets, each subcarrier set in the L subcarrier sets includes at least one subcarrier, L is less than or equal to M, and precoding manners and/or beamforming manners and/or power allocation schemes adopted by the L subcarrier sets are different.

With reference to the fifteenth possible implementation manner of the second aspect, in a sixteenth possible implementation manner of the second aspect, the allocation priorities of the transmission powers of the L subcarrier sets are different.

In a third aspect, an apparatus for transmitting control signaling is provided, including: a processing module, configured to load a control signaling on a general control channel, where the general control channel occupies M subcarriers in a system bandwidth in a frequency domain, M is a positive integer greater than or equal to 1 and smaller than a total number of subcarriers in the system bandwidth, and the control signaling includes a common control signaling capable of indicating operation actions of two or more terminal devices; and a sending module, configured to send the control signaling through the common control channel.

With reference to the third aspect, in a first possible implementation manner of the third aspect, the common control signaling is control signaling that is scrambled by using an identifier that can be used by two or more terminal devices.

With reference to the first possible implementation manner of the third aspect, in a second possible implementation manner of the third aspect, the identifier that can be used by two or more terminal devices includes one or more of the following identifiers: system information-radio network temporary identity SI-RNTI, random access response-radio network temporary identity RA-RNTI and paging-radio network temporary identity P-RNTI.

With reference to the third aspect, or the first or second possible implementation manner of the third aspect, in a third possible implementation manner of the third aspect, the control signaling further includes user-specific control signaling that indicates only one terminal device operation action; the user-specific control signaling includes at least one of the following information: resource allocation information, modulation and coding scheme information, hybrid automatic repeat request, HARQ, information, precoding information, power control information of an uplink data channel or an uplink control channel, reference signal indication information, trigger indication information of channel information measurement, trigger indication information of sounding reference signal, and indication information of carrier component.

With reference to the third aspect, or any possible implementation manner of the first to third possible implementation manners of the third aspect, in a fourth possible implementation manner of the third aspect, the sending module is specifically configured to: the control signaling is transmitted over at least one control signaling element CCE on the common control channel.

With reference to the third aspect or the first to fourth possible implementation manners of the third aspect, in a fifth possible implementation manner of the third aspect, the common control channel includes a common search space and/or a user-specific search space.

With reference to the fifth possible implementation manner of the third aspect, in a sixth possible implementation manner of the third aspect, the common control signaling is carried on the common search space.

With reference to the fifth or sixth possible implementation manner of the third aspect, in a seventh possible implementation manner of the third aspect, the user-specific control signaling is carried on at least one of the common search space and the user-specific search space.

With reference to the third aspect, or any possible implementation manner of the first to seventh possible implementation manners of the third aspect, in an eighth possible implementation manner of the third aspect, the M subcarriers are discretely distributed.

With reference to the third aspect or any one of the first to eighth possible implementation manners of the third aspect, in a ninth possible implementation manner of the third aspect, at least one of a data channel and a user-specific control channel and the common control channel occupy frequency domain resources in a frequency division multiplexing manner, where the data channel is a channel carrying data, and the user-specific control channel is a channel carrying only user-specific control signaling.

With reference to the third aspect, or any possible implementation manner of the first to ninth possible implementation manners of the third aspect, in a tenth possible implementation manner of the third aspect, the common control channel occupies, in a time domain, N symbols in one subframe, where N is any positive integer smaller than a total number of symbols included in one subframe.

With reference to the ninth possible implementation manner of the third aspect, in an eleventh possible implementation manner of the third aspect, the common control channel and the data channel use different precoding manners, and/or different beamforming manners, and/or different power allocation schemes.

With reference to the ninth possible implementation manner of the third aspect, in a twelfth possible implementation manner of the third aspect, the common control channel is different from a precoding manner and/or a beamforming manner and/or a power allocation scheme adopted by the user-specific control channel.

With reference to the eleventh possible implementation manner of the third aspect, in a thirteenth possible implementation manner of the third aspect, the allocation of the transmission power of the common control channel precedes the allocation of the transmission power of the data channel.

With reference to the twelfth possible implementation manner of the third aspect, in a fourteenth possible implementation manner of the third aspect, the allocation of the transmission power of the general control channel is prior to the allocation of the transmission power of the user-specific control channel.

With reference to the third aspect, or any possible implementation manner of the first to fourteenth possible implementation manners of the third aspect, in a fifteenth possible implementation manner of the third aspect, the M subcarriers are divided into L subcarrier sets, each subcarrier set in the L subcarrier sets includes at least one subcarrier, L is less than or equal to M, and precoding manners and/or beamforming manners and/or power allocation schemes adopted by the L subcarrier sets are different.

With reference to the fifteenth possible implementation manner of the third aspect, in a sixteenth possible implementation manner of the third aspect, the allocation priorities of the transmission powers of the L subcarrier sets are different.

With reference to the third aspect or any one of the first to sixteenth possible implementation manners of the third aspect, in a seventeenth possible implementation manner of the third aspect, the apparatus is a network device.

In a fourth aspect, an apparatus for transmitting control signaling is provided, including: a receiving module, configured to receive a control signaling through a common control channel, where the common control channel occupies M subcarriers in a system bandwidth in a frequency domain, M is a positive integer greater than or equal to 1 and smaller than a total number of subcarriers in the system bandwidth, and the control signaling includes a common control signaling capable of indicating operation actions of two or more terminal devices; and the processing module is used for demodulating the control signaling.

With reference to the fourth aspect, in a first possible implementation manner of the fourth aspect, the common control signaling is control signaling scrambled by using an identifier that can be used by two or more terminal devices.

With reference to the first possible implementation manner of the fourth aspect, in a second possible implementation manner of the fourth aspect, the identifier that can be used by two or more terminal devices includes one or more of the following identifiers: system information-radio network temporary identity SI-RNTI, random access response-radio network temporary identity RA-RNTI and paging-radio network temporary identity P-RNTI.

With reference to the fourth aspect, or the first or second possible implementation manner of the fourth aspect, in a third possible implementation manner of the fourth aspect, the control signaling further includes user-specific control signaling that indicates only one terminal device operation action, where the user-specific control signaling includes at least one of the following information: resource allocation information, modulation and coding scheme information, hybrid automatic repeat request, HARQ, information, precoding information, power control information of an uplink data channel or an uplink control channel, reference signal indication information, trigger indication information of channel information measurement, trigger indication information of sounding reference signal, and indication information of carrier component.

With reference to the fourth aspect or any one of the first to third possible implementation manners of the fourth aspect, in a fourth possible implementation manner of the fourth aspect, the receiving module is specifically configured to: the control signaling is received over at least one control signaling element CCE on the common control channel.

With reference to the fourth aspect or the first to fourth possible implementation manners of the fourth aspect, in a fifth possible implementation manner of the fourth aspect, the common control channel includes a common search space and/or a user-specific search space.

With reference to the fifth possible implementation manner of the fourth aspect, in a sixth possible implementation manner of the fourth aspect, the common control signaling is carried on the common search space.

With reference to the fifth or sixth possible implementation manner of the fourth aspect, in a seventh possible implementation manner of the fourth aspect, the user-specific control signaling is carried on at least one of the common search space and the user-specific search space.

With reference to the fourth aspect or any one of the first to seventh possible implementation manners of the fourth aspect, in an eighth possible implementation manner of the fourth aspect, the M subcarriers are discretely distributed.

With reference to the fourth aspect or any one of the first to the eighth possible implementation manners of the fourth aspect, in a ninth possible implementation manner of the fourth aspect, at least one of a data channel and a user-specific control channel and the common control channel occupy frequency domain resources in a frequency division multiplexing manner, where the data channel is a channel carrying data, and the user-specific control channel is a channel carrying only dedicated control signaling.

With reference to the fourth aspect or any one of the first to ninth possible implementation manners of the fourth aspect, in a tenth possible implementation manner of the fourth aspect, the common control channel occupies N symbols in one subframe in a time domain, where N is any positive integer smaller than a total number of symbols included in one subframe.

With reference to the ninth possible implementation manner of the fourth aspect, in an eleventh possible implementation manner of the fourth aspect, the common control channel and the data channel use different precoding manners, and/or different beamforming manners, and/or different power allocation schemes.

With reference to the ninth possible implementation manner of the fourth aspect, in a twelfth possible implementation manner of the fourth aspect, the common control channel and the user-specific control channel are different in a precoding manner, and/or a beamforming manner, and/or a power allocation scheme.

With reference to the eleventh possible implementation manner of the fourth aspect, in a thirteenth possible implementation manner of the fourth aspect, the allocation of the transmission power of the common control channel precedes the allocation of the transmission power of the data channel.

With reference to the twelfth possible implementation manner of the fourth aspect, in a fourteenth possible implementation manner of the fourth aspect, the allocation of the transmission power of the general control channel is prior to the allocation of the transmission power of the user-specific control channel.

With reference to the fourth aspect, or any one of the first to fourteenth possible implementation manners of the fourth aspect, in a fifteenth possible implementation manner of the fourth aspect, the M subcarriers are divided into L subcarrier sets, each subcarrier set in the L subcarrier sets includes at least one subcarrier, L is less than or equal to M, and precoding manners and/or beamforming manners and/or power allocation schemes adopted by the L subcarrier sets are different.

With reference to the fifteenth possible implementation manner of the fourth aspect, in a sixteenth possible implementation manner of the fourth aspect, the allocation priorities of the transmission powers of the L subcarrier sets are different.

With reference to the fourth aspect or any one of the first to sixteenth possible implementation manners of the fourth aspect, in a seventeenth possible implementation manner of the fourth aspect, the apparatus is a terminal device.

Based on the above technical features, the method and apparatus for transmitting control signaling provided in the embodiments of the present invention load control signaling capable of indicating two or more terminal devices to operate on a control channel occupying part of the bandwidth in the system bandwidth, thereby saving transmission resources.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic flow chart of a method of transmitting control signaling according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a control signaling bearer according to an embodiment of the present invention;

FIGS. 3(a) and 3(b) are schematic diagrams of a common search space and a user-specific search space in a control channel according to an embodiment of the present invention;

FIG. 4 is a diagram illustrating time-frequency resources occupied by a control channel according to an embodiment of the present invention;

fig. 5 is a schematic diagram of a method of transmitting control signaling or data according to the present invention;

FIG. 6 is a schematic flow chart diagram of a method of transmitting control signaling in accordance with another embodiment of the present invention;

FIG. 7 is a schematic block diagram of an apparatus for transmitting control signaling in accordance with an embodiment of the present invention;

fig. 8 is a schematic block diagram of an apparatus for transmitting control signaling according to another embodiment of the present invention;

fig. 9 is a schematic block diagram of an apparatus for transmitting control signaling according to still another embodiment of the present invention;

fig. 10 is a schematic block diagram of an apparatus for transmitting control signaling according to still another embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.

It should be understood that the technical solutions of the embodiments of the present invention can be applied to various communication systems, for example: a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a Long Term Evolution (LTE) System, a Frequency Division Duplex (FDD) System, a Time Division Duplex (TDD) System, a Universal Mobile Telecommunications System (UMTS), and a future 5G Communication System.

It should be understood that, in the embodiments of the present invention, a terminal device may also be referred to as a User Equipment (User Equipment, abbreviated as "UE") User Equipment, an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a User terminal, a wireless communication device, a User agent, or a User Equipment. The terminal device may be a Station (ST) in a Wireless Local Area Network (WLAN), a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) Station, a Personal Digital Assistant (PDA), a handheld device with Wireless communication function, a computing device or other processing device connected to a Wireless modem, a vehicle mounted device, a wearable device, and a terminal device in a future 5G network.

The network device may be a device such as a network device for communicating with a mobile device, and the network device may be an Access Point (AP) in a WLAN, a Base Transceiver Station (BTS) in a Code Division Multiple Access (GSM or CDMA), a Base Station (NodeB or NB) in a WCDMA, an evolved Node B (eNB) in a Long Term Evolution (LTE), a relay Station or an Access Point, or a network device in a vehicle-mounted device, a wearable device, and a future 5G network.

It should be noted that the method of the embodiment of the present invention may be applied to a Massive MIMO system, and may also be applied to a limited antenna system. The invention is based on the scene that the design scheme of the existing Physical Broadcast Channel (PBCH for short) is not changed, but can also be applied to other scenes that the Physical Channel is changed.

Fig. 1 is a schematic flow chart of a method for transmitting control signaling according to an embodiment of the present invention, which may be performed by a network device, as shown in fig. 1, where the method 100 includes:

s110, carrying a control signaling on a general control channel, wherein the general control channel occupies M subcarriers in a system bandwidth in a frequency domain, M is a positive integer which is greater than or equal to 1 and less than the total number of the subcarriers in the system bandwidth, and the control signaling comprises a common control signaling which can be used for indicating operation actions of two or more terminal devices;

and S120, sending the control signaling through the general control channel.

Specifically, the network device may carry the control signaling on a common control channel occupying a part of the system bandwidth in the frequency domain, and send the control signaling to the terminal device on the common control channel, and the control signaling may include common control signaling capable of instructing two or more terminal devices to operate.

Therefore, the method for transmitting the control signaling according to the embodiment of the present invention carries the common control signaling capable of indicating two or more terminal devices to operate on the control channel occupying part of the bandwidth in the system bandwidth, thereby improving the utilization efficiency of the transmission resources.

It should be noted that the system bandwidth may be understood as a Channel bandwidth (Channel bandwidth) in an existing communication standard, for example, the system bandwidth that an Evolved Universal Terrestrial Radio Access (E-UTRA) system can support may be 1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz, 20MHz, and the like.

It should be understood that, in the embodiment of the present invention, the generic control channel may carry common control signaling capable of indicating two or more terminal device operation actions (behaviors) and user-specific control signaling indicating only one terminal device operation action, and the generic control channel in S110 may be referred to as a common control channel. The scope of the invention is not limited by this name.

Optionally, in S110, the common Control Channel may be a Physical Downlink Control Channel (PDCCH for short) in the existing LTE system, and may also be other Control channels capable of being used for carrying a common Control signaling, which is not limited in the present invention.

Optionally, in S110, the common control signaling may indicate the operation actions of the two or more terminal devices by carrying identifiers that can be recognized by the two or more terminal devices, and the common control signaling may also indicate the operation actions of the two or more terminal devices by scrambling. For example, the common control signaling is control signaling scrambled by an identity that can be used by two or more terminal devices. Two or more terminal devices may also be understood as at least two terminal devices.

For example, the common control signaling may be DCI format 1A scrambled by a System Information-Radio Network Temporary identifier (SI-RNTI) in an existing communication standard, DCI format 1C scrambled by a paging-Radio Network Temporary identifier P-RNTI, or a Physical Downlink Shared Channel (PDSCH) scrambled by a random access response-Radio Network Temporary identifier RA-RNTI, but the present invention is not limited thereto.

Optionally, in S110, the identifier that can be used by two or more terminal devices includes one or more of the following identifiers: system information-radio network temporary identity SI-RNTI, random access response-radio network temporary identity RA-RNTI and paging-radio network temporary identity P-RNTI.

Specifically, a System Information Block (SIB) in the existing 4G LTE/LTE-Advanced System carries Broadcast System Information, where the Broadcast System Information carried on the SIB is a main body of cell System Information, and different System Information constitutes different SIBs, and the SIBs are transmitted on a PDSCH and frequency division multiplexed with unicast data transmitted on the Channel, and are called a Dynamic Broadcast Channel (DBCH) on the PDSCH; the locations and transmission formats of SIBs occurring on PDSCH in one subframe are indicated by control signaling scrambled by SI-RNTI.

The notification class information in the existing 4G LTE/LTE-Advanced system includes Random Access Response (RAR) information and Paging (Paging) information. The location and transport format of their transmissions on the PDSCH are indicated by control signaling scrambled by the RA-RNTI and the P-RNTI, respectively.

Further, the control signaling also includes user-specific control signaling indicating only one terminal device operation action, the user-specific control signaling including at least one of the following information: resource allocation information, modulation and coding scheme information, hybrid automatic repeat request, HARQ, information, precoding information, power control information of an uplink data channel or an uplink control channel, reference signal indication information, trigger indication information of channel information measurement, trigger indication information of sounding reference signal, and indication information of carrier component.

In the embodiment of the present invention, optionally, S120 specifically is:

the control signaling is transmitted over at least one control signaling element CCE on the common control channel.

For example, as shown in fig. 2, the light color filling part represents the time-frequency resources occupied by the common Control Channel, the dark color filling part represents a Control signaling unit (Control Channel Elements, abbreviated as "CCE"), the common Control Channel may include a plurality of CCEs, and when the Control signaling is transmitted, the Control signaling to be transmitted may be mapped onto the plurality of CCEs to transmit the Control signaling, for example, in fig. 2, one common Control signaling may be mapped onto 3 CCEs to transmit the Control signaling.

And further, the network device may determine the number of CCEs and the transmission power required for transmitting the control signaling according to parameters such as the transmission condition of the control signaling, the cell size, and the transmission range of the control signaling.

In an embodiment of the present invention, optionally, the common control channel comprises a common search space and/or a user-specific search space. The Common Search interval (Common Search Space) may be an interval that all UEs in the existing standard need to monitor, and is generally used to send paging messages, RAR messages, system messages, and uplink power control messages Common to some UEs. The common search interval occupies CCEs with the size from 0 to the maximum number of 16, the PDCCH in the common search interval only has the sizes of two types of 4 CCEs and 8 CCEs, and the UE needs to search for 2 times from 0 and according to the CCE granularity of 8, search for 4 times according to the CCE granularity of 4 and search for 6 times of PDCCH at most in the common search interval. The user-Specific Search space (UE-Specific Search) may be an interval that only a Specific UE needs to monitor in the existing standard, and the starting point of the user-Specific Search space depends on the identity ID (C-RNTI) of the UE, the subframe number, and the type of PDCCH, and the user-Specific Search space is different according to the subframe. And the public control signaling carried by the public search space has identification bits of Scrambling code sequence Identity (SCID) to support multiple different Scrambling code sequences, and the network device (such as eNB) can allocate the multiple Scrambling code sequences to different users, and multiplex multiple users in the same resource; the identification bit of SCID in the user-specific control signaling carried by the user-specific search space and/or public search space supports a scrambling code sequence, the SCID can only be allocated to one user, and the user can only release the user-specific control signaling scrambled by the SCID of the user.

As shown in fig. 3(a) and 3(b), the light-color filled portion indicates a common search space, and the oblique-line filled portion is a user-specific search space. One control signaling in fig. 3(a) may be Common control signaling or user-specific control signaling, Common Search Space can carry Common control signaling and/or user-specific control signaling, and UE-Space Search Space can only carry user-specific control signaling, for example, the control signaling in fig. 3(b) is user-specific control signaling. In other words, the common control signaling is carried on the common search space and the user-specific control signaling is carried on at least one of the common search space and the user-specific search space.

In the embodiment of the present invention, optionally, the M subcarriers are discretely distributed. That is, some of the M subcarriers may be continuously distributed, while other subcarriers are discretely distributed; or, M subcarriers are all discrete, as shown in fig. 3(a) or 3(b) (in the figure, the frequency is changed from low to high from bottom to top), the common control channel occupies 3 parts of bandwidth in the frequency domain, each part of bandwidth includes at least one subcarrier, and the three parts of bandwidth are discrete. Preferably, a part of the bandwidth is located at the high frequency end of the system bandwidth, a part of the bandwidth is located at the center of the system bandwidth, and a part of the bandwidth is located at the low frequency end of the system bandwidth. Since the bandwidths are discretely distributed, it is possible to obtain a balance between the frequency use efficiency and the frequency diversity gain when transmitting the control signaling.

In the embodiment of the present invention, optionally, at least one of a data channel and a user-specific control channel and the general control channel occupy frequency domain resources in a frequency division multiplexing manner, where the data channel is a channel for carrying data, and the user-specific control channel is a channel for carrying only user-specific control signaling. Optionally, the data Channel may be a PDSCH in the prior art, and the user-specific Control Channel may be an Enhanced Physical Downlink Control Channel (ePDCCH) in the prior art, so that a precoding gain, a frequency domain scheduling gain, and an interference coordination gain may be obtained.

In the embodiment of the present invention, optionally, the common control channel may occupy all symbols of one subframe in the time domain. Preferably, the common control channel occupies N symbols in one subframe in time domain, where N is any positive integer less than the total number of all symbols in one subframe, for example, the common control channel of the cell occupies symbols numbered 12, 13, and 14 in one subframe. The common control channels of other cells may occupy symbols other than the symbols numbered 12, 13 and 14, thereby enabling interference of control signaling between neighboring cells to be avoided.

Furthermore, as shown in fig. 4, the time-frequency resource occupied by the generic control channel can be divided into a plurality of regions, and in fig. 4, the regions are divided into 3 regions, namely two regions filled by oblique lines and a region filled by light colors. Different regions may be allocated to different cells or sectors, and a Physical Control Format Indicator Channel (for example, a Physical Control Format Indicator Channel, abbreviated as "PCFICH") indicates a time-frequency region allocated to one cell or sector, for example, a general Control Channel of the cell in fig. 4 may occupy a region filled with light color, and the other two regions are reserved for a neighboring cell #1 and a neighboring cell #2, respectively, thereby enabling inter-cell interference coordination.

In the embodiment of the present invention, optionally, the common control channel and the data channel may adopt the same precoding manner, and/or a beamforming manner, and/or a power allocation scheme. Preferably, the common control channel and the data channel use different precoding methods, and/or different beamforming methods, and/or different power allocation schemes.

In the embodiment of the present invention, optionally, the common control channel may employ the same precoding manner as the user-specific control channel, and/or a beamforming manner, and/or a power allocation scheme, and preferably, the precoding manner employed by the common control channel is different from the precoding manner employed by the user-specific control channel, and/or the beamforming manner, and/or the power allocation scheme.

Specifically, as shown in fig. 5, a plurality of Antenna units (Antenna points, referred to as "APs" for short) transmit control signaling and data to a terminal device, where the Antenna units numbered #0 to #3 transmit common control signaling indicating operation actions of the plurality of terminal devices on a narrow band (a common control channel or a common control channel) through a wide beam, and in order to ensure that the plurality of terminal devices successfully receive the control signaling, a precoding manner of wide-area coverage is adopted, and all transmission power is allocated to the control signaling to be transmitted. While the antenna units numbered #4 to # N transmit user-specific control signaling indicating only an operation action of one terminal device or data corresponding to one terminal device over a wide frequency band (user-specific control channel or data channel) using narrow beams, may use a general precoding scheme, and may transmit in a power allocation scheme in which transmission power is preferentially allocated to the user-specific control signaling and the remaining power is allocated to the data.

In the embodiment of the present invention, optionally, the transmission power of the generic control channel is allocated before the transmission power of the data channel; and/or the transmission power of the general control channel is allocated before the transmission power of the user-specific control channel. In other words, when only a common control channel and a data channel exist in a communication system, the transmission power of the common control channel is allocated before the transmission power of the data channel; when only a general control channel and a user-specific control channel exist in a communication system, the transmission power of the general control channel is allocated before the transmission power of the user-specific control channel; when the common control channel is provided in a communication system, and the data channel and the user-specific control channel are provided at the same time, the transmission power of the common control channel is allocated before the transmission power of the data channel is allocated, and the transmission power of the common control channel is allocated before the transmission power of the user-specific control channel is allocated. That is to say, the network device may preferentially allocate the transmission power to the frequency band occupied by the generic control channel to ensure the transmission quality of the control signaling, thereby improving the reception reliability of the control signaling.

Further, the M subcarriers occupied by the common control channel may be divided into L subcarrier sets, where each subcarrier set in the L subcarrier sets includes at least one subcarrier, L is less than or equal to M, and the precoding manners and/or the beamforming manners and/or the power allocation schemes adopted by the L subcarrier sets may be the same or different.

Specifically, the L subcarrier sets may adopt different precoding manners, for example, a part of subcarrier sets may adopt a precoding manner based on a spatial correlation matrix, and another part of subcarrier sets may adopt a precoding manner based on a codebook. The L subcarrier sets may use different beamforming manners, for example, a part of subcarrier sets may use a single-stream beamforming manner, and another part of subcarriers may use a dual-stream beamforming manner. The L subcarrier sets may also adopt different power allocation schemes, for example, a part of subcarrier sets is only used for transmitting common control signaling, so all transmission power may be allocated to the common control signaling, and another part of subcarrier sets may be used for transmitting common control signaling and user-specific control signaling, so the transmission power may be allocated to the common control signaling preferentially, and the remaining power may be allocated to the user-specific control signaling, but the present invention is not limited thereto.

Further, the L subcarrier sets may uniformly allocate the transmission power, and preferably, the allocation priorities of the transmission power of the L subcarrier sets are different. Specifically, a part of the transmission power may be allocated to a part of the subcarrier sets to ensure that the control signaling carried by the part of the subcarrier sets can be successfully received, and then the remaining transmission power may be allocated to the other subcarrier sets. For example, the priority ranking may be performed on the L subcarrier sets, and the power allocation is performed according to the order of the priority, so as to preferentially ensure the receiving success rate of the control signaling carried on the subcarrier set with a high priority.

The method for transmitting control signaling according to the embodiment of the present invention is described in detail from the network device side in conjunction with fig. 1 to 5, and the method for transmitting control signaling according to the embodiment of the present invention is described in detail from the terminal device side in conjunction with fig. 6, it should be understood that the interaction and related characteristics, functions, etc. of the terminal device and the network device described in the network device side correspond to the description of the terminal device side, and the repeated description is appropriately omitted for the sake of brevity.

Fig. 6 is a schematic flow chart of a method of transmitting control signaling according to another embodiment of the present invention, which may be performed by a terminal device. As shown in fig. 6, the method 200 includes:

s210, receiving a control signaling through a general control channel, wherein the general control channel occupies M subcarriers in a system bandwidth on a frequency domain, M is a positive integer which is greater than or equal to 1 and less than the total number of the subcarriers in the system bandwidth, and the control signaling comprises a common control signaling which can be used for indicating operation actions of two or more terminal devices;

s220, the control signaling is demodulated.

Specifically, a terminal device receives common control signaling including information that can be used to instruct two or more terminal device operational actions through a common control channel that occupies a portion of the bandwidth within the system bandwidth in the frequency domain, and then demodulates the received control signaling.

Therefore, the method for transmitting the control signaling of the embodiment of the invention can be used for indicating that the common control signaling of the operation actions of two or more terminal devices is loaded on the control channel occupying part of the bandwidth in the system bandwidth, thereby improving the use efficiency of the transmission resources.

Optionally, in S210, the common control signaling is control signaling scrambled by using an identifier that can be used by two or more terminal devices.

Optionally, in S210, the identifier that can be used by two or more terminal devices includes one or more of the following identifiers: system information-radio network temporary identity SI-RNTI, random access response-radio network temporary identity RA-RNTI and paging-radio network temporary identity P-RNTI.

Optionally, in S210, the control signaling further includes user-specific control signaling capable of indicating only one terminal device operation action, where the user-specific control signaling includes at least one of the following information: resource allocation information, modulation and coding scheme information, hybrid automatic repeat request, HARQ, information, precoding information, power control information of an uplink data channel or an uplink control channel, reference signal indication information, trigger indication information of channel information measurement, trigger indication information of sounding reference signal, and indication information of carrier component.

Optionally, S210 is specifically: the control signaling is received over at least one control signaling element CCE on the common control channel.

Optionally, in S210, the common control channel includes a common search space and/or a user-specific search space. The Common Search interval (Common Search Space) may be an interval that all UEs in the existing standard need to monitor, and is generally used to send paging messages, RAR messages, system messages, and uplink power control messages Common to some UEs. The common search interval occupies CCEs with the size from 0 to the maximum number of 16, the PDCCH in the common search interval only has the sizes of two types of 4 CCEs and 8 CCEs, and the UE needs to search for 2 times from 0 and according to the CCE granularity of 8, search for 4 times according to the CCE granularity of 4 and search for 6 times of PDCCH at most in the common search interval. The user-Specific Search space (UE-Specific Search) may be an interval that only a Specific UE needs to monitor in the existing standard, and the starting point of the user-Specific Search space depends on the identity ID (C-RNTI) of the UE, the subframe number, and the type of PDCCH, and the user-Specific Search space is different according to the subframe. And the public control signaling carried by the public search space has identification bits of Scrambling code sequence Identity (SCID) to support multiple different Scrambling code sequences, and the network device (such as eNB) can allocate the multiple Scrambling code sequences to different users, and multiplex multiple users in the same resource; the identification bit of SCID in the user-specific control signaling carried by the user-specific search space and/or public search space supports a scrambling code sequence, the SCID can only be allocated to one user, and the user can only release the user-specific control signaling scrambled by the SCID of the user.

In the embodiment of the present invention, optionally, the common control signaling is carried on the common search space.

In an embodiment of the present invention, optionally, the user-specific control signaling is carried on at least one of the common search space and the user-specific search space.

In the embodiment of the present invention, optionally, the M subcarriers are discretely distributed.

In the embodiment of the present invention, optionally, at least one of the data channel and the user-specific control channel and the general control channel occupy frequency domain resources in a frequency division multiplexing manner.

In this embodiment of the present invention, optionally, the common control channel occupies N symbols in one subframe in a time domain, where N is any positive integer smaller than the total number of symbols included in one subframe.

In the embodiment of the present invention, optionally, the common control channel and the data channel use different precoding manners, and/or different beamforming manners, and/or different power allocation schemes.

In the embodiment of the present invention, optionally, the common control channel and the user-specific control channel use different precoding manners, and/or different beamforming manners, and/or different power allocation schemes.

In the embodiment of the present invention, optionally, the transmission power of the common control channel is allocated before the transmission power of the data channel.

In the embodiment of the present invention, optionally, the transmission power of the general control channel is allocated before the transmission power of the user-specific control channel.

In this embodiment of the present invention, optionally, the M subcarriers are divided into L subcarrier sets, each subcarrier set in the L subcarrier sets includes at least one subcarrier, L is less than or equal to M, and the L subcarrier sets employ different precoding manners and/or different beamforming manners and/or different power allocation schemes.

In the embodiment of the present invention, optionally, the allocation priorities of the transmission powers of the L subcarrier sets are different.

The apparatus for transmitting control signaling according to an embodiment of the present invention will be described in detail with reference to fig. 7. As shown in fig. 7, the apparatus 10 includes:

a processing module 11, configured to load a control signaling on a general control channel, where the general control channel occupies M subcarriers in a system bandwidth in a frequency domain, where M is a positive integer greater than or equal to 1 and smaller than a total number of subcarriers in the system bandwidth, and the control signaling includes a common control signaling capable of indicating operation actions of two or more terminal devices;

a sending module 12, configured to send the control signaling through the generic control channel.

Therefore, the apparatus for transmitting control signaling according to the embodiment of the present invention carries common control signaling capable of instructing two or more terminal devices to operate on a control channel occupying a part of the bandwidth within the system bandwidth, thereby improving the utilization efficiency of transmission resources.

In the embodiment of the present invention, optionally, the common control signaling is control signaling scrambled by using an identifier that can be used by two or more terminal devices.

In the embodiment of the present invention, optionally, the identifier that can be used by two or more terminal devices includes one or more of the following identifiers: system information-radio network temporary identity SI-RNTI, random access response-radio network temporary identity RA-RNTI and paging-radio network temporary identity P-RNTI.

In the embodiment of the present invention, optionally, the control signaling further includes user-specific control signaling that indicates only one terminal device to operate; the user-specific control signaling includes at least one of the following information: resource allocation information, modulation and coding scheme information, hybrid automatic repeat request, HARQ, information, precoding information, power control information of an uplink data channel or an uplink control channel, reference signal indication information, trigger indication information of channel information measurement, trigger indication information of sounding reference signal, and indication information of carrier component.

In this embodiment of the present invention, optionally, the sending module 12 is specifically configured to:

In an embodiment of the present invention, optionally, the common control channel comprises a common search space and/or a user-specific search space.

In the embodiment of the present invention, optionally, the apparatus is a network device.

It should be understood that the apparatus 10 according to the embodiment of the present invention may correspond to the method 100 for performing transmission control signaling in the embodiment of the present invention, and the above and other operations and/or functions of each module in the apparatus 10 are respectively for implementing corresponding flows of each method in fig. 1, and are not described herein again for brevity.

An apparatus for transmitting control signaling according to another embodiment of the present invention will be described in detail with reference to fig. 8. As shown in fig. 8, the apparatus 20 includes:

a receiving module 21, configured to receive a control signaling through a general control channel, where the general control channel occupies M subcarriers in a system bandwidth in a frequency domain, M is a positive integer greater than or equal to 1 and smaller than a total number of subcarriers in the system bandwidth, and the control signaling includes a common control signaling capable of indicating operation actions of two or more terminal devices;

and a processing module 22, configured to demodulate the control signaling.

Therefore, the common control signaling which is received by the device for transmitting the control signaling and can be used for indicating the operation actions of two or more terminal devices is carried on the control channel occupying part of the bandwidth in the system bandwidth, so that the use efficiency of the transmission resources can be improved.

In this embodiment of the present invention, optionally, the control signaling further includes user-specific control signaling that can only indicate an operation action of one terminal device, where the user-specific control signaling includes at least one of the following information: resource allocation information, modulation and coding scheme information, hybrid automatic repeat request, HARQ, information, precoding information, power control information of an uplink data channel or an uplink control channel, reference signal indication information, trigger indication information of channel information measurement, trigger indication information of sounding reference signal, and indication information of carrier component.

In this embodiment of the present invention, optionally, the receiving module 21 is specifically configured to include: the control signaling is received over at least one control signaling element CCE on the common control channel.

In the embodiment of the present invention, optionally, the apparatus is a terminal device.

It should be understood that the apparatus 20 according to the embodiment of the present invention may correspond to the method 200 for performing transmission control signaling in the embodiment of the present invention, and the above and other operations and/or functions of each module in the apparatus 20 are respectively for implementing corresponding flows of each method in fig. 6, and are not described herein again for brevity.

As shown in fig. 9, an apparatus 100 for transmitting control signaling is further provided in the embodiments of the present invention, where the apparatus 100 includes a processor 101, a memory 102, a transmitter 103, and a bus system 104, and the bus system 104 is optional. Wherein, the processor 101, the memory 102 and the transmitter 103 are connected by a bus system 104, the memory 102 is used for storing instructions, and the processor 101 is used for executing the instructions stored in the memory 102 to control the transmitter 103 to transmit signals. The processor 101 is configured to load a control signaling on a general control channel, where the general control channel occupies M subcarriers in a system bandwidth in a frequency domain, M is a positive integer greater than or equal to 1 and smaller than a total number of subcarriers in the system bandwidth, and the control signaling includes a common control signaling capable of indicating operation actions of two or more terminal devices; the transmitter 103 is configured to transmit the control signaling through the common control channel.

It should be understood that, in the embodiment of the present invention, the processor 101 may be a Central Processing Unit (CPU), and the processor 101 may also be other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory 102 may include both read-only memory and random access memory and provides instructions and data to the processor 101. A portion of the memory 102 may also include non-volatile random access memory. For example, the memory 102 may also store device type information.

The bus system 104 may include a power bus, a control bus, a status signal bus, and the like, in addition to a data bus. For clarity of illustration, however, the various buses are labeled as bus system 104 in the figures.

In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 101. The steps of a method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 102, and the processor 101 reads the information in the memory 102 and completes the steps of the method in combination with the hardware thereof. To avoid repetition, it is not described in detail here.

Optionally, as an embodiment, the common control signaling is control signaling scrambled by using an identifier that can be used by two or more terminal devices.

Optionally, as an embodiment, the identifier that can be used by two or more terminal devices includes one or more of the following identifiers: system information-radio network temporary identity SI-RNTI, random access response-radio network temporary identity RA-RNTI and paging-radio network temporary identity P-RNTI.

Optionally, as an embodiment, the control signaling further includes user-specific control signaling that indicates only one terminal device operation action; the user-specific control signaling includes at least one of the following information: resource allocation information, modulation and coding scheme information, hybrid automatic repeat request, HARQ, information, precoding information, power control information of an uplink data channel or an uplink control channel, reference signal indication information, trigger indication information of channel information measurement, trigger indication information of sounding reference signal, and indication information of carrier component.

Optionally, as an embodiment, the transmitter 103 is specifically configured to: the control signaling is transmitted over at least one control signaling element CCE on the common control channel.

Optionally, as an embodiment, the common control channel includes a common search space and/or a user-specific search space.

Optionally, as an embodiment, the common control signaling is carried on the common search space.

Optionally, as an embodiment, the user-specific control signaling is carried on at least one of the common search space and the user-specific search space.

Optionally, as an embodiment, the M subcarriers are discretely distributed.

Optionally, as an embodiment, at least one of the data channel and the user-specific control channel and the general control channel occupy frequency domain resources in a frequency division multiplexing manner.

Optionally, as an embodiment, the common control channel occupies N symbols in one subframe in the time domain, where N is any positive integer smaller than the total number of symbols included in one subframe.

Optionally, as an embodiment, the common control channel and the data channel use different precoding manners, and/or different beamforming manners, and/or different power allocation schemes.

Optionally, as an embodiment, the common control channel and the user-specific control channel use different precoding manners, and/or different beamforming manners, and/or different power allocation schemes.

Optionally, as an embodiment, the allocation of the transmission power of the common control channel precedes the allocation of the transmission power of the data channel.

Optionally, as an embodiment, the allocation of the transmission power of the general control channel precedes the allocation of the transmission power of the user-specific control channel.

Optionally, as an embodiment, the M subcarriers are divided into L subcarrier sets, each subcarrier set in the L subcarrier sets includes at least one subcarrier, L is less than or equal to M, and precoding manners and/or beamforming manners adopted by the L subcarrier sets and/or power allocation schemes are different.

Optionally, as an embodiment, the allocation priorities of the transmit powers of the L subcarrier sets are different.

Optionally, as an embodiment, the apparatus is a network device.

It should be understood that the apparatus 100 according to the embodiment of the present invention may correspond to the apparatus 10 according to the embodiment of the present invention, and may correspond to a corresponding main body in executing the method according to the embodiment of the present invention, and the above and other operations and/or functions of the respective modules in the apparatus 100 are respectively for implementing the corresponding flows of the method in fig. 1, and are not repeated herein for brevity.

As shown in fig. 10, an apparatus 200 for transmitting control signaling is further provided in an embodiment of the present invention, where the apparatus 200 includes a processor 201, a memory 202, a receiver 203, and a bus system 204, and the bus system 204 is optional. Wherein, the processor 201, the memory 202 and the receiver 203 are connected by a bus system 204, the memory 202 is used for storing instructions, and the processor 201 is used for executing the instructions stored by the memory 202 to control the receiver 103 to receive signals. Wherein, the receiver 203 is configured to receive a control signaling through a common control channel, where the common control channel occupies M subcarriers in a system bandwidth in a frequency domain, M is a positive integer greater than or equal to 1 and smaller than a total number of subcarriers in the system bandwidth, and the control signaling includes a common control signaling capable of indicating operation actions of two or more terminal devices; the processor 201 is configured to demodulate the control signaling.

It should be understood that, in the embodiment of the present invention, the processor 201 may be a Central Processing Unit (CPU), and the processor 201 may also be other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory 202 may include both read-only memory and random access memory, and provides instructions and data to the processor 201. A portion of the memory 202 may also include non-volatile random access memory. For example, the memory 202 may also store device type information.

The bus system 204 may include a power bus, a control bus, a status signal bus, and the like, in addition to a data bus. For clarity of illustration, however, the various buses are labeled as bus system 204 in the figures.

In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 201. The steps of a method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 202, and the processor 201 reads the information in the memory 202 and completes the steps of the method in combination with the hardware. To avoid repetition, it is not described in detail here.

Optionally, as an embodiment, the control signaling further includes user-specific control signaling indicating only one terminal device operation action, where the user-specific control signaling includes at least one of the following information: resource allocation information, modulation and coding scheme information, hybrid automatic repeat request, HARQ, information, precoding information, power control information of an uplink data channel or an uplink control channel, reference signal indication information, trigger indication information of channel information measurement, trigger indication information of sounding reference signal, and indication information of carrier component.

Optionally, as an embodiment, the receiver 203 is specifically configured to: the control signaling is received over at least one control signaling element CCE on the common control channel.

Optionally, as an embodiment, the M subcarriers are discretely distributed.

Optionally, as an embodiment, the apparatus is a terminal device.

It should be understood that the apparatus 200 according to the embodiment of the present invention may correspond to the apparatus 20 in the embodiment of the present invention, and may correspond to a corresponding main body in executing the method according to the embodiment of the present invention, and the above and other operations and/or functions of the respective modules in the apparatus 200 are respectively for realizing the corresponding flow of the method in fig. 6, and are not described herein again for brevity.

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In various embodiments of the present invention, it should be understood that the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

In addition, the terms "system" and "network" are often used interchangeably herein. It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

In the embodiments provided herein, it should be understood that "B corresponding to a" means that B is associated with a from which B can be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may be determined from a and/or other information.

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

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

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

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

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

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

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A method of transmitting control signaling, comprising:

bearing a control signaling on a general control channel, wherein the general control channel occupies M subcarriers in a system bandwidth on a frequency domain, M is a positive integer which is greater than or equal to 1 and less than the total number of the subcarriers in the system bandwidth, and the control signaling comprises a common control signaling which can be used for indicating two or more terminal equipment to operate;

the common control signaling is control signaling scrambled by using an identifier that can be used by the two or more terminal devices;

and sending the control signaling through the general control channel.

2. The method of claim 1, wherein the identifiers that can be used by two or more terminal devices comprise one or more of the following identifiers: system information-radio network temporary identity SI-RNTI, random access response-radio network temporary identity RA-RNTI and paging-radio network temporary identity P-RNTI.

3. The method according to claim 1 or 2, wherein the control signaling further comprises user-specific control signaling indicating only one terminal device operation action, the user-specific control signaling comprising at least one of the following information: resource allocation information, modulation and coding scheme information, hybrid automatic repeat request, HARQ, information, precoding information, power control information of an uplink data channel or an uplink control channel, reference signal indication information, trigger indication information of channel information measurement, trigger indication information of sounding reference signal, and indication information of carrier component.

4. The method of claim 1 or 2, wherein said sending the control signaling over the generic control channel comprises:

transmitting the control signaling over at least one control signaling element, CCE, on the common control channel.

5. The method according to claim 1 or 2, wherein the generic control channel comprises a common search space and/or a user-specific search space.

6. The method of claim 5, wherein the common control signaling is carried over the common search space.

7. The method of claim 5, wherein the user-specific control signaling is carried on at least one of the common search space and the user-specific search space.

8. The method according to claim 1 or 2, wherein the M subcarriers are discretely distributed.

9. The method according to claim 1 or 2, wherein at least one of a data channel and a user-specific control channel and the common control channel occupy frequency domain resources in a frequency division multiplexing manner, wherein the data channel is a channel for carrying data, and the user-specific control channel is a channel for carrying only user-specific control signaling.

10. The method according to claim 1 or 2, wherein the common control channel occupies N symbols in one subframe in time domain, where N is any positive integer less than the total number of symbols included in one subframe.

11. The method of claim 9, wherein the common control channel and the data channel use different precoding schemes, and/or different beamforming schemes, and/or different power allocation schemes.

12. The method of claim 9, wherein the common control channel and the user-specific control channel are different in precoding, beamforming, and/or power allocation.

13. The method of claim 11, wherein the allocation of the transmit power of the common control channel precedes the allocation of the transmit power of the data channel.

14. The method of claim 12, wherein the allocation of the transmit power of the generic control channel precedes the allocation of the transmit power of the user-specific control channel.

15. The method according to claim 1 or 2, wherein the M subcarriers are divided into L subcarrier sets, each of the L subcarrier sets includes at least one subcarrier, L is less than or equal to M, and the L subcarrier sets employ different precoding schemes and/or different beamforming schemes and/or different power allocation schemes.

16. The method of claim 15, wherein the L sets of subcarriers have different priorities for assigning transmit powers.

17. A method of transmitting control signaling, comprising:

receiving a control signaling through a general control channel, wherein the general control channel occupies M subcarriers in a system bandwidth on a frequency domain, M is a positive integer which is greater than or equal to 1 and less than the total number of the subcarriers in the system bandwidth, and the control signaling comprises a common control signaling which can be used for indicating operation actions of two or more terminal devices;

and demodulating the control signaling.

18. The method of claim 17, wherein the identifiers that can be used by two or more terminal devices comprise one or more of the following identifiers: system information-radio network temporary identity SI-RNTI, random access response-radio network temporary identity RA-RNTI and paging-radio network temporary identity P-RNTI.

19. The method according to claim 17 or 18, wherein the control signaling further comprises user-specific control signaling indicating only one terminal device operation action, the user-specific control signaling comprising at least one of the following information: resource allocation information, modulation and coding scheme information, hybrid automatic repeat request, HARQ, information, precoding information, power control information of an uplink data channel or an uplink control channel, reference signal indication information, trigger indication information of channel information measurement, trigger indication information of sounding reference signal, and indication information of carrier component.

20. The method according to claim 17 or 18, wherein said receiving said control signaling over said common control channel comprises:

receiving the control signaling over at least one control signaling element, CCE, on the common control channel.

21. The method according to claim 17 or 18, wherein the generic control channel comprises a common search space and/or a user-specific search space.

22. The method of claim 21, wherein the common control signaling is carried over the common search space.

23. The method of claim 21, wherein the user-specific control signaling is carried on at least one of the common search space and the user-specific search space.

24. The method according to claim 17 or 18, wherein the M subcarriers are discretely distributed.

25. The method according to claim 17 or 18, wherein at least one of a data channel and a user-specific control channel and the common control channel occupy frequency domain resources in a frequency division multiplexing manner, wherein the data channel is a channel for carrying data, and the user-specific control channel is a channel for carrying only user-specific control signaling.

26. The method according to claim 17 or 18, wherein the common control channel occupies N symbols in one subframe in time domain, where N is any positive integer smaller than the total number of symbols included in one subframe.

27. The method of claim 25, wherein the common control channel and the data channel use different precoding schemes, and/or different beamforming schemes, and/or different power allocation schemes.

28. The method of claim 25, wherein the common control channel and the user-specific control channel are different in precoding, beamforming, and/or power allocation.

29. The method of claim 27, wherein the allocation of the transmit power of the common control channel precedes the allocation of the transmit power of the data channel.

30. The method of claim 28, wherein the transmission power of the generic control channel is allocated prior to the transmission power of the user-specific control channel.

31. The method according to claim 17 or 18, wherein the M subcarriers are divided into L subcarrier sets, each of the L subcarrier sets includes at least one subcarrier, L is less than or equal to M, and the L subcarrier sets employ different precoding schemes and/or different beamforming schemes and/or different power allocation schemes.

32. The method of claim 31, wherein the L sets of subcarriers have different priorities for assigning transmit powers.

33. An apparatus for transmitting control signaling, comprising:

a processing module, configured to load a control signaling on a general control channel, where the general control channel occupies M subcarriers in a system bandwidth in a frequency domain, M is a positive integer greater than or equal to 1 and smaller than a total number of subcarriers in the system bandwidth, and the control signaling includes a common control signaling capable of indicating operation actions of two or more terminal devices;

a sending module, configured to send the control signaling through the common control channel.

34. The apparatus of claim 33, wherein the identifiers that can be used by two or more terminal devices comprise one or more of the following identifiers: system information-radio network temporary identity SI-RNTI, random access response-radio network temporary identity RA-RNTI and paging-radio network temporary identity P-RNTI.

35. The apparatus according to claim 33 or 34, wherein the control signaling further comprises user-specific control signaling indicating only one terminal device operation action; the user-specific control signaling includes at least one of the following information: resource allocation information, modulation and coding scheme information, hybrid automatic repeat request, HARQ, information, precoding information, power control information of an uplink data channel or an uplink control channel, reference signal indication information, trigger indication information of channel information measurement, trigger indication information of sounding reference signal, and indication information of carrier component.

36. The apparatus according to claim 33 or 34, wherein the sending module is specifically configured to:

37. The apparatus of claim 33 or 34, wherein the common control channel comprises a common search space and/or a user-specific search space.

38. The apparatus of claim 37, wherein the common control signaling is carried over the common search space.

39. The apparatus of claim 37, wherein the user-specific control signaling is carried on at least one of the common search space and the user-specific search space.

40. The apparatus according to claim 33 or 34, wherein the M subcarriers are discretely distributed.

41. The apparatus of claim 33 or 34, wherein at least one of a data channel and a user-specific control channel occupies frequency domain resources in a frequency division multiplexing manner with the common control channel, wherein the data channel is a channel for carrying data, and the user-specific control channel is a channel for carrying only user-specific control signaling.

42. The apparatus according to claim 33 or 34, wherein the common control channel occupies N symbols in one subframe in time domain, where N is any positive integer smaller than the total number of symbols included in one subframe.

43. The apparatus of claim 41, wherein the common control channel and the data channel use different precoding schemes, and/or different beamforming schemes, and/or different power allocation schemes.

44. The apparatus of claim 41, wherein the common control channel and the user-specific control channel are different from each other in precoding, beamforming, and/or power allocation.

45. The apparatus of claim 43, wherein the allocation of the transmit power for the common control channel precedes the allocation of the transmit power for the data channel.

46. The apparatus of claim 44, wherein the transmission power of the generic control channel is allocated prior to the transmission power of the user-specific control channel.

47. The apparatus according to claim 33 or 34, wherein the M subcarriers are divided into L subcarrier sets, each of the L subcarrier sets includes at least one subcarrier, L is less than or equal to M, and the L subcarrier sets employ different precoding schemes and/or different beamforming schemes and/or different power allocation schemes.

48. The apparatus of claim 47, wherein the L sets of subcarriers have different priorities for assigning transmit powers.

49. The apparatus of claim 33 or 34, wherein the apparatus is a network device.

50. An apparatus for transmitting control signaling, comprising:

a receiving module, configured to receive a control signaling through a common control channel, where the common control channel occupies M subcarriers in a system bandwidth in a frequency domain, M is a positive integer greater than or equal to 1 and smaller than a total number of subcarriers in the system bandwidth, and the control signaling includes a common control signaling capable of indicating operation actions of two or more terminal devices;

and the processing module is used for demodulating the control signaling.

51. The apparatus of claim 50, wherein the identifiers that can be used by two or more terminal devices comprise one or more of the following identifiers: system information-radio network temporary identity SI-RNTI, random access response-radio network temporary identity RA-RNTI and paging-radio network temporary identity P-RNTI.

52. The apparatus according to claim 50 or 51, wherein the control signaling further comprises user-specific control signaling indicating only one terminal device operation action, the user-specific control signaling comprising at least one of the following information: resource allocation information, modulation and coding scheme information, hybrid automatic repeat request, HARQ, information, precoding information, power control information of an uplink data channel or an uplink control channel, reference signal indication information, trigger indication information of channel information measurement, trigger indication information of sounding reference signal, and indication information of carrier component.

53. The apparatus of claim 50 or 51, wherein the receiving module is specifically configured to:

54. The apparatus of claim 50 or 51, wherein the common control channel comprises a common search space and/or a user-specific search space.

55. The apparatus of claim 54, wherein the common control signaling is carried over the common search space.

56. The apparatus of claim 54, wherein the user-specific control signaling is carried on at least one of the common search space and the user-specific search space.

57. The apparatus of claim 50 or 51, wherein the M subcarriers are discretely distributed.

58. The apparatus of claim 50 or 51, wherein at least one of a data channel and a user-specific control channel occupies frequency domain resources in a frequency division multiplexing manner with the common control channel, wherein the data channel is a channel for carrying data, and the user-specific control channel is a channel for carrying only user-specific control signaling.

59. The apparatus of claim 50 or 51, wherein the generic control channel occupies N symbols in a subframe in time domain, where N is any positive integer smaller than the total number of symbols included in a subframe.

60. The apparatus of claim 58, wherein the common control channel and the data channel use different precoding schemes, and/or different beamforming schemes, and/or different power allocation schemes.

61. The apparatus of claim 58, wherein the common control channel and the user-specific control channel are different from each other in precoding, beamforming, and/or power allocation.

62. The apparatus of claim 60, wherein the allocation of the transmit power for the common control channel precedes the allocation of the transmit power for the data channel.

63. The apparatus of claim 62, wherein the transmission power of the generic control channel is allocated prior to the transmission power of the user-specific control channel.

64. The apparatus according to claim 50 or 51, wherein the M subcarriers are divided into L subcarrier sets, each of the L subcarrier sets includes at least one subcarrier, L is less than or equal to M, and the L subcarrier sets employ different precoding schemes and/or different beamforming schemes and/or different power allocation schemes.

65. The apparatus of claim 64, wherein the L sets of subcarriers have different priorities for assigning transmit powers.

66. The apparatus according to claim 50 or 51, wherein the apparatus is a terminal device.