CN108023707B

CN108023707B - Method and device for transmitting downlink control signals

Info

Publication number: CN108023707B
Application number: CN201610974038.8A
Authority: CN
Inventors: 李赛楠; 黄煌; 张希
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2016-11-03
Filing date: 2016-11-03
Publication date: 2023-10-24
Anticipated expiration: 2036-11-03
Also published as: CN108023707A

Abstract

The invention provides a transmission method and a device of a downlink control signal, the method comprises a base station transmitting one or more radio frames, wherein the one or more radio frames comprise a plurality of OFDM symbols carrying synchronous signals, each OFDM symbol carrying synchronous signals is transmitted through one or more downlink beams of the base station, wherein the OFDM symbols carrying synchronous signals also carry downlink control signals; since the downlink control signal is placed in the OFDM symbol carrying the synchronization signal, the signaling overhead is reduced.

Description

Method and device for transmitting downlink control signals

Technical Field

The present invention relates to the field of wireless communications, and in particular, to a method and apparatus for transmitting a downlink control signal.

Background

In order to meet the transmission requirements of a mobile communication system for large capacity and high speed, a high-frequency band of more than 6GHz is introduced for communication, so that the transmission characteristics of the mobile communication system for large bandwidth and high speed are utilized, and the mobile communication system is one of hot research technologies of a 5G communication system. Due to high path loss of high-frequency communication, a narrow beam is required to ensure a propagation distance and high beam gain, however, the coverage area of the narrow beam is limited, and in order to ensure communication quality, narrow beam alignment is required between a high-frequency base station and a terminal, which brings challenges to the design of channels such as a broadcast channel, a control channel, a synchronous channel, a random access channel and the like. In the existing cellular mobile communication system, the above channels are realized through the transmission and the reception of the omni-directional antenna, and the terminal at any position can receive the information of the above channels sent by the base station. In high-frequency communication, because the narrow beam is adopted as the directional beam, if the effect of omni-directional coverage in the existing mobile communication system is to be obtained, all directional beam combinations of a transmitting end and a receiving end need to be traversed; if the transmitting end and the receiving end both adopt directional beams, the number of the beam combinations is very large, for example, if the transmitting end and the receiving end both adopt 4 directional beams, 16 directional beam combinations are generated in total, which leads to a sharp increase of high-frequency system overhead, and in addition, the base station needs to specially transmit beam resource information corresponding to signaling notification terminals, so that the system overhead is increased.

Disclosure of Invention

The invention provides a transmission method and a transmission device of a downlink control signal, which are used for reducing system overhead.

In one aspect, a method for transmitting a downlink control signal is disclosed, including:

the base station transmits one or more radio frames, wherein the one or more radio frames comprise a plurality of OFDM (orthogonal frequency division multiplexing ) symbols carrying synchronous signals, each OFDM symbol carrying synchronous signals is transmitted through one or more downlink beams of the base station, and downlink control signals are also carried in the OFDM symbols carrying synchronous signals.

The method previously included, the base station generating the one or more radio frames;

in yet another aspect, a method for transmitting a downlink control signal is disclosed, including:

the base station completes beam alignment and downlink synchronization with the terminal equipment;

the base station sends a downlink control signal to the terminal equipment through a downlink beam aimed at the terminal equipment, wherein the downlink control signal is arranged in an OFDM symbol carrying a synchronizing signal.

The above two aspects describe a transmission method of a downlink control signal from a base station side.

On the other hand, a transmission method of a downlink control signal is disclosed, which comprises the following steps:

The method comprises the steps that a terminal device receives an OFDM symbol carrying a synchronizing signal, which is sent by a base station through aiming at a downlink wave beam of the terminal device, wherein the OFDM symbol carrying the synchronizing signal also carries a downlink control signal;

and the terminal equipment detects the downlink control signal at the set resource element position of the OFDM symbol carrying the synchronous signal.

Correspondingly, each device based on the method is also provided:

a base station, comprising:

the generation module is used for: for generating one or more radio frames;

and a sending module: the one or more wireless frames are used for sending the one or more wireless frames, the one or more wireless frames comprise a plurality of OFDM symbols carrying synchronous signals, each OFDM symbol carrying the synchronous signals is sent through one or more downlink beams of the base station, and downlink control signals are further carried in the OFDM symbols carrying the synchronous signals.

A base station, comprising:

and a beam scanning module: used for completing beam alignment and downlink synchronization with the terminal equipment;

and a sending module: and the downlink control signal is arranged in an OFDM symbol carrying the synchronous signal.

A terminal device, comprising:

and a receiving module: the OFDM symbol carrying the synchronization signal is used for receiving the OFDM symbol carrying the synchronization signal, which is sent by the base station through aiming at the downlink wave beam of the terminal equipment, and the OFDM symbol carrying the synchronization signal also carries a downlink control signal;

and a detection module: and the downlink control signal is used for detecting the position of the set resource element of the OFDM symbol carrying the synchronous signal.

The above-described aspect describes a transmission method of a downlink control signal from a terminal device side.

In combination with the above aspect, the method includes: the terminal equipment detects the synchronous signal sent by the base station and reports the beam ID of the wave beam to which the synchronous signal belongs to the base station.

In combination with the above aspect, the downlink beams of the plurality of OFDM symbols carrying the synchronization signal traverse respective transmit beams of the base station.

The above aspects are combined, wherein at least two OFDM symbols are transmitted through different beams.

The beam numbers carried by the at least two OFDM symbols are different, the reference signal sequences carried by the at least two OFDM symbols and used for indicating the beam numbers are different, or the reference signal resource numbers carried by the at least two OFDM symbols and used for indicating the beam numbers are different.

Combining the above aspects, wherein the downlink control signal is a random access response, paging information or control format indication; other types of downlink control signals are also possible.

In combination with the above aspect, the downlink control signal is carried by PDCCH (physical downlink control channel ), PCFICH (physical control format indicator channel, physical control format indicator channel) or PDSCH (Physical Downlink Shared Channel ), that is, at least one of the following is carried in an OFDM symbol carrying a synchronization signal sent by a downlink beam directed to the terminal device by the base station: PDCCH, PCFICH or PDSCH resources.

In combination with the above aspect, the paging information is paging time PO (paging occasion), which includes a temporary identifier of the wireless network and resource information of the paging message of the terminal device.

The above aspect is combined, wherein the control format indicates resource allocation for indicating the beam direction PDCCH.

In combination with the above aspect, the plurality of OFDM symbols carrying synchronization signals are located in one or more subframes of the radio frame.

In combination with the above aspect, the downlink control signal occupies a resource element RE (Resource Element) set by the OFDM symbol.

In combination with the above aspects, the downlink control signal is sent by aiming at the downlink beam of the user equipment through the base station, so that the complexity of blind detection and the power consumption of the terminal equipment are reduced.

In combination with the above aspect, the OFDM symbol carrying the synchronization signal is sent by the base station aiming at the downlink beam of the terminal device.

In yet another aspect, a method for transmitting PDCCH resources is disclosed, including:

the base station receives a PDCCH resource request message sent by the terminal equipment;

and the base station allocates PDCCH resources to the terminal equipment by aiming at the downlink wave beam of the terminal equipment, wherein the PDCCH resources are positioned in OFDM symbols carrying the synchronous signals.

On the other hand, a transmission method of PDCCH resources is disclosed, comprising:

the terminal equipment sends a PDCCH resource request message to the base station;

the terminal equipment receives PDCCH resources sent by the base station through the downlink wave beam aiming at the terminal equipment, wherein the PDCCH resources are distributed by the base station and are positioned in OFDM symbols carrying synchronous signals.

In addition, a device based on the method is also provided:

a base station, comprising:

and a receiving module: the method comprises the steps of receiving a PDCCH resource request message sent by a terminal device;

The distribution module: and the method is used for distributing PDCCH resources to the terminal equipment through the downlink wave beam aiming at the terminal equipment, and the PDCCH resources are positioned in OFDM symbols carrying synchronous signals.

A terminal device, comprising:

and a sending module: the method comprises the steps of sending a PDCCH resource request message to a base station;

and a receiving module: and the PDCCH resource is distributed by the base station and is positioned in an OFDM symbol carrying the synchronous signal.

The two schemes disclose that the transmission of the PDCCH resource is performed in a scheduling mode, and are respectively described from a base station side and a terminal equipment side, wherein the characteristics related in the scheme of the non-scheduling mode can be applied to the scheduling mode.

And combining the above aspects, wherein the PDCCH resource is used for carrying a downlink control signal.

In combination with the above aspect, the downlink control signal is random access response, paging information or resource allocation information, HARQ information, a power control command, a modulation coding scheme, and the like.

In combination with the above aspect, the PDCCH resource request message is carried through RRC signaling.

In combination with the above aspect, the method further comprises:

The base station and the terminal equipment complete beam scanning and alignment, and the base station receives the beam ID sent by the terminal equipment and determines the downlink beam aligned with the terminal equipment.

In combination with the above aspect, the method further comprises:

the terminal equipment detects the synchronous signal sent by the base station and reports the beam ID of the wave beam to which the synchronous signal belongs to the base station.

In the above schemes, the synchronization signal and the downlink control signal are placed in the same OFDM symbol, occupy different frequency domain resources, that is, are arranged in a frequency division manner, and in another scheme, the synchronization signal and the downlink control signal may be arranged in a time division manner, occupy different time resources, as follows:

the base station generates one or more radio frames;

the base station transmits the one or more radio frames, wherein the one or more radio frames comprise a plurality of blocks, each block carries a synchronous signal and a downlink control signal, the synchronous signal and the downlink control signal are arranged in a time division mode, each block is transmitted through one or more downlink beams of the base station, and at least two blocks are transmitted through different beams;

at least two of the plurality of blocks include a temporally continuous block.

the method comprises the steps that terminal equipment receives a block carrying a synchronous signal and a downlink control signal, which is sent by a base station through aiming at a downlink wave beam of the terminal equipment, wherein the synchronous signal and the downlink control signal are arranged in a time division mode;

and the terminal equipment detects the downlink control signal at the set resource element position of the block.

The present invention is described above from the base station side and the terminal device side, respectively.

Based on the method, a corresponding device is also provided:

a base station, comprising:

the generation module is used for: for generating one or more radio frames;

and a sending module: the wireless frame transmission device is used for transmitting the one or more wireless frames, the one or more wireless frames comprise a plurality of blocks, each block carries a synchronous signal and a downlink control signal, the synchronous signal and the downlink control signal are arranged in a time division mode, each block is transmitted through one or more downlink beams of the base station, and at least two blocks are transmitted through different beams;

at least two of the plurality of blocks include a temporally continuous block.

A terminal device, comprising:

and a receiving module: the base station is used for receiving a block which is sent by the base station through the downlink wave beam aiming at the terminal equipment and carries a synchronous signal and a downlink control signal, and the synchronous signal and the downlink control signal are arranged in a time division mode;

And a detection module: for detecting the downlink control signal at a set resource element position of the block.

In combination with the above aspects, wherein: the beam numbers carried by the at least two blocks are different, the reference signal sequences carried by the at least two blocks and used for indicating the beam numbers are different, or the reference signal resource numbers carried by the at least two blocks and used for indicating the beam numbers are different.

In combination with the above aspects, wherein: the synchronization signal and the downlink control signal are carried in different OFDM symbols.

In combination with the above aspects, wherein: the synchronization signal includes PSS and/or SSS, and the PSS and/or SSS included in each block is 1.

And combining the above aspects, wherein the downlink control signal is a random access response, paging information or control format indication.

In combination with the above aspects, wherein: wherein, the downlink control signal is carried by the PDCCH, the PCFICH or the PDSCH.

In combination with the above aspects, wherein: the downlink control signal is random access response, paging information or control format indication.

In combination with the above aspects, wherein: the paging information is paging time PO, and comprises a wireless network temporary identifier and resource information of the paging information.

In combination with the above aspects, wherein: the control format indicates a resource allocation for indicating the beam direction PDCCH.

In combination with the above aspects, wherein: the plurality of blocks are located in one or more subframes of the radio frame.

In combination with the above aspects, wherein: the downlink control signal occupies a set resource element in the block.

In combination with the above aspects, wherein: the block carrying the downlink control signal is sent by aiming at the downlink wave beam of the user equipment through the base station, so that the complexity of blind detection is further reduced.

In addition, each characteristic of the method for transmitting the downlink control signal in the frequency division manner can be applied to the time division manner, and the two are only different in frame structure.

In the above aspects of the present invention, since the downlink control signal is placed in the OFDM symbol carrying the synchronization signal, or since the downlink control signal is placed in the block carrying the synchronization signal, the signaling overhead is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings 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 other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of a frame structure of a synchronous radio frame carrying a downlink control signal according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of a frame structure of a synchronous radio frame carrying a downlink control signal according to an embodiment of the present invention.

Fig. 3 is a flowchart of a downlink control signal transmission method according to an embodiment of the present invention.

Fig. 4 is a flowchart of a downlink control signal transmission method according to still another embodiment of the present invention.

Fig. 5 is a schematic diagram of a downlink control signal transmission device according to an embodiment of the invention.

Fig. 6 is a schematic diagram of a downlink control signal transmission apparatus according to another embodiment of the present invention.

Fig. 7 is a schematic diagram of a downlink control signal transmission device according to an embodiment of the invention.

Fig. 8 is a schematic diagram of a downlink control signal transmission apparatus according to another embodiment of the present invention.

Fig. 9 is a schematic diagram of a downlink control signal transmission apparatus according to another embodiment of the present invention.

Fig. 10 is a block diagram of a synchronous radio frame carrying a downlink control signal according to another embodiment of the present invention.

Detailed Description

The embodiment of the invention can be used for wireless networks of various technologies. The radio access network may comprise different network elements in different systems. For example, the network elements of the radio Access network in LTE (Long Term Evolution) and LTE-A (LTE Advanced) include enbs (evolved base stations), and the network elements of WLAN (wireless local area network)/Wi-Fi include Access Points (APs), and the like. Other wireless networks may use similar schemes as the embodiments of the present invention, but the related modules in the base station system may be different, and the embodiments of the present invention are not limited.

It should also be appreciated that in embodiments of the present invention, the Terminal device includes, but is not limited to, a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (Mobile Terminal), a Mobile phone (handset), a handset (handset), and a portable device (portable Equipment), and the User Equipment may communicate with one or more core networks via a radio access network (RAN, radio Access Network), for example, the User Equipment may be a Mobile phone (or "cellular" phone), a computer with wireless communication capability, and the like, and the User Equipment may also be a portable, pocket, hand-held, computer-built-in, or vehicle-mounted Mobile device.

In the high frequency communication process, a narrow beam is required to ensure a propagation distance and a high beam gain, and the beam alignment is performed to ensure communication quality, so that the base station and different user equipment terminal equipment can be performed on different beam pairs in the transmission process, and the base station must traverse all beam directions to ensure coverage of the terminal equipment at different positions when transmitting downlink control channels/signals. The general method for receiving the downlink control signal/channel by the terminal equipment is to perform blind detection, and detect the own downlink control signal/channel on the resources of the downlink control channel specified by the protocol, in order to reduce the blind detection complexity, the base station informs the terminal equipment of the scheduling beam sequence of the downlink control channel, so that the terminal equipment knows the corresponding downlink beam and only needs to perform blind detection in the corresponding downlink beam, thus reducing the blind detection complexity and increasing the signaling overhead.

The transmission method of the downlink control signal provided by the embodiment of the invention comprises the following steps:

the base station transmits one or more radio frames, wherein the one or more radio frames comprise a plurality of OFDM symbols carrying synchronous signals, each OFDM symbol carrying synchronous signals is transmitted through one or more downlink beams of the base station, and downlink control signals are also carried in the OFDM symbols carrying synchronous signals.

At least 2 OFDM symbols are transmitted through different beams, and the downlink beams of the plurality of OFDM symbols carrying the synchronization signal may traverse each transmission beam of the base station.

Further, the beam numbers carried by the at least two OFDM symbols are different, the reference signal sequences carried by the at least two OFDM symbols for indicating the beam numbers are different, or the reference signal resource numbers carried by the at least two OFDM symbols for indicating the beam numbers are different.

The method comprises the steps that terminal equipment receives OFDM symbols carrying synchronous signals sent by a base station, wherein the OFDM symbols carrying the synchronous signals also carry downlink control signals;

The transmission method of the downlink control signal is described above from the perspective of the base station and the terminal device, respectively.

In one embodiment, the downlink control signal is sent by the base station to the downlink beam of the ue, for example: the OFDM symbol carrying the synchronizing signal, which is sent by the base station aiming at the downlink wave beam of the user equipment, also carries the downlink control signal of the user equipment.

In the above method embodiments, a frame structure for high frequency communication is proposed, which may be referred to as a synchronous radio frame; for example: a radio frame may include a plurality of subframes, where at least one subframe is used for downlink synchronization and beam scanning, and may be referred to as a synchronization subframe, where the synchronization subframe includes a plurality of OFDM symbols, each OFDM symbol includes a plurality of resource elements RE (resource element), where a synchronization signal occupies a part of REs (part or all of the OFDM symbols), each OFDM symbol may be sent by N different beams (N is greater than or equal to 1), that is, a base station may send the N different beams through N antenna ports, and a terminal device may distinguish different beams of the same OFDM symbol through different antenna ports. Different OFDM symbols can be transmitted through beams in different directions, and all OFDM symbols carrying synchronous signals can traverse all transmission beams of a base station, so that terminals in different positions can be guaranteed to be received; when the terminal equipment scans the synchronous signal of a certain beam of the base station, the downlink beam of the base station aligned with the terminal equipment can be confirmed, the uplink beam of the base station aligned with the terminal equipment is also confirmed, and the beam alignment and the downlink synchronization between the base station and the terminal equipment are completed; the base station continuously transmits the radio frame for downlink synchronization with different terminal devices.

In a specific embodiment, as shown in fig. 1, the length of a radio frame is 10ms, each radio frame includes 50 subframes with the same length, and the numbers are sequentially 0-49, where subframe 0 and subframe 25 are used for downlink synchronization and beam scanning, and may be referred to as a synchronization subframe, each subframe includes 14 OFDM symbols, and the numbers are sequentially from 0-13; each OFDM symbol includes a plurality of resource elements RE (Resource Element), for example, one OFDM symbol may include 100 REs, where a portion of the REs are used to carry a primary synchronization signal PSS (Primary Synchronization Signal), further, may carry a secondary synchronization signal SSS (Secondary Synchronization Signal), and may also carry ESS (Extended Synchronization Signal); for example: the 18 REs in the middle of each OFDM symbol can be utilized to carry a primary synchronization signal PSS, a secondary synchronization signal SSS and an ESS; in addition, a part of the remaining 82 REs may be used as a PDCCH (Physical Downlink Control Channel ) for carrying some downlink control signals, for example, downlink control signals such as random access response, paging information, etc.; another part of the remaining REs may be used as PCFICH (Physical Control Format Indicator Channel ), for example: for carrying downlink control signals such as control format indication CFI (Control Format Indicator), and some REs may be used as PDSCH (Physical Downlink Shared Channel ), for example: paging information such as paging time PO (Paging Occasion) is carried; each downlink control signal can be set to occupy an RE at a fixed position, so that when the terminal device receives an OFDM symbol carrying a synchronization signal sent by the high-frequency base station, the terminal device can search for the corresponding downlink control signal at the corresponding position RE.

The frame structure shown in fig. 1 is only one embodiment and is not limited to the above-described frame structure.

In the downlink signal transmission method mentioned in the above embodiment, since the downlink control signal is placed in the OFDM symbol carrying the synchronization signal, and further the base station is aimed at the downlink beam of the terminal device to transmit, the base station does not need to separately send signaling to inform the terminal device of the resource of the downlink control signal, so that the blind detection complexity is reduced and the signaling overhead is reduced.

The following embodiment specifically describes a method for transmitting a downlink synchronization signal in a high frequency communication system in conjunction with a network access procedure, and referring to fig. 3, the method includes:

201, a terminal device accesses a base station and completes beam scanning, alignment and downlink synchronization with the base station; in the process, a base station traverses each Beam direction to send OFDM symbols carrying a synchronizing signal, a terminal device reports Beam id of a Beam to which the synchronizing signal belongs to the base station after detecting the synchronizing signal, and Beam alignment and downlink synchronization are completed between the base station and the terminal device;

for example: in the process of synchronizing the terminal device and the base station, the base station transmits a radio frame carrying a synchronization signal, the frame structure of the radio frame has been described above, and not described in detail herein, because the OFDM symbols carrying the synchronization signal in the radio frame are transmitted through beams in different directions, all the OFDM symbols carrying the synchronization signal can traverse each transmission Beam of the base station, so that the terminal devices in different positions can all receive the synchronization signal, for example, when one of the terminal devices detects the synchronization signal, the downlink Beam to which the synchronization signal belongs can be confirmed, and the Beam id of the downlink Beam is reported to the base station, and at this time, the base station and the terminal device complete Beam scanning and alignment.

If the radio frame shown in fig. 1 is adopted, the synchronization signal is carried in the OFDM symbols (OFDM symbols) of the subframes 0 and 25, and occupies part of the REs; each OFDM symbol can be transmitted through one or more different beams, and each transmission beam in different directions of the base station can be traversed by the OFDM symbol carrying the synchronous signal, so that terminal equipment in different positions can be ensured to be received; when a certain terminal device detects a synchronous signal, the Beam ID of the Beam to which the synchronous signal belongs is reported to the base station, so that the base station can acquire the Beam IDs corresponding to the terminal devices.

202, optionally, the base station sends system information to the terminal equipment in the corresponding Beam according to the Beam id reported by the terminal equipment, and the system information can be sent through a physical broadcast channel (physical broadcast channel, PBCH);

the system information may also be disposed in the OFDM symbol carrying the synchronization signal in a similar manner to the downlink control signal, and sent by aiming at the downlink beam of the terminal device, that is, part of the RE resources are set as PBCH in the OFDM symbol carrying the synchronization signal, so as to be used for transmitting the system information.

203, the terminal device sends a random access preamble to the base station through an uplink beam with a synchronization signal detected, and the random access preamble can be sent through a PRACH (physical random access channel, PRACH, physical random access channel);

204, the base station uses the Beam corresponding to the Beam id reported by the terminal equipment to send a random access response (random access response, RAR) to the terminal equipment, wherein the RAR is carried in an OFDM symbol carrying a synchronous signal sent by the base station; namely, the base station transmits an OFDM symbol carrying a synchronizing signal to the terminal equipment through a downlink beam aiming at the terminal equipment, and the OFDM symbol carrying the synchronizing signal further carries the RAR. Since the RAR occupies PDCCH resources, a part of REs are fixed as PDCCH resources in the OFDM symbol carrying the synchronization signal except for REs carrying the synchronization signal, so as to place the RAR.

For example: if the frame structure shown in fig. 1 is adopted, in step 201, when the base station and the terminal device perform beam scanning and alignment, the terminal device monitors a synchronization signal in the 13 th OFDM symbol of the subframe 0 sent by a certain beam, and if the terminal device is synchronized with the beam adopted by the 13 th OFDM symbol of the subframe 0 sent by the base station, the terminal device reports the beam ID of the beam to the base station, and the base station acquires the beam corresponding to the terminal device, namely, the beam aligned to the terminal device; after the base station receives the preamble sent by the terminal equipment, the base station carries the random access response RAR of the terminal equipment by aiming at the beam of the terminal equipment, and the terminal equipment detects the PDCCH resource at the corresponding position in the 13 th OFDM symbol, so that the RAR can be obtained, at this time, part of REs in the 13 th OFDM symbol are used as PDCCH resources and used for carrying the RAR, and particularly, the REs at which positions in the OFDM symbol are used for carrying the RAR can be preset.

In this way, the terminal device knows in which OFDM symbol to search for the PDCCH without the base station having to specifically signal the terminal device the corresponding resource of the PDCCH.

In the above embodiment, the downlink control signal is taken as an example of RAR, and in addition, the downlink control signal is not limited to the RAR, but may be of other types, for example, in another embodiment, the downlink control signal may be paging information of the terminal device, such as paging time PO (Paging Occasion), and PO is placed in an OFDM symbol carrying the synchronization signal. That is, a part of the REs are fixed in the OFDM symbol of the synchronization signal to be used as PDCCH resources or PDSCH resources, wherein a part of the REs are fixed in the PDCCH or PDSCH resources to be used to carry the POs. With one radio frame as a period, the PO may be carried in each OFDM symbol carrying the synchronization signal, or may be carried in only part of the OFDM symbols carrying the synchronization signal, for example, with one or more radio frames as a period, each of which is/are separated by one or more radio frames, and the PO may be carried in the OFDM symbols carrying the synchronization signal of the radio frames.

Since the OFDM symbol carrying the PO (and also carrying the synchronization signal) may be transmitted by one or more beams, a plurality of the OFDM symbols may traverse each transmission beam of the base station, and if each downlink beam carrying the PO in the synchronization signal OFDM symbol is referred to as a PO traversal process once, the period of the PO traversal process may be an integer multiple of the synchronization signal beam traversal period, that is, the PO traversal process is performed once in the beam traversal period of the synchronization signal at an interval of integer multiple, that is, only the PO is carried in the synchronization signal OFDM symbol in the beam traversal period of some synchronization signals. For example, as shown in fig. 2, a total of 50 subframes in a 10ms radio frame, subframe 0 and subframe 25 are synchronization subframes, each subframe includes 14 OFDM symbols, two subframes include 28 OFDM symbols, each OFDM symbol may be transmitted through multiple beams, and the beam corresponding to the 28 OFDM symbols traverses all transmission beams of the base station, that is, the beam traversing period of the synchronization signal is the length of one radio frame. If the beam traversing period of the synchronization signal is twice as the period of the PO traversing process, the PO may be carried in each OFDM of the sub-frame 0 and the sub-frame 25 of the frame1, while the sub-frame 0 and the sub-frame 25 of the frame2 do not carry the PO, and each OFDM of the sub-frame 0 and the sub-frame 25 of the following frame3 carries the PO again, that is, the PO carried in the frame sent by one frame every interval, and the PO is carried only in the OFDM symbol carrying the synchronization signal; of course, po can be carried by 2 frames or more frames, so that system resources can be saved.

The following embodiments describe a transmission method of a downlink control signal by taking the downlink control signal as PO as an example:

firstly, after the base station and the terminal equipment are in downlink synchronization, the terminal equipment reports the beam id of the downlink beam used by the downlink synchronization to the base station, and the process is similar to the process described in the step 201 and is not described in detail; if the terminal device switches to another downlink beam during the communication process, for example, due to the movement of the terminal device or environmental influence, the downlink beam id stored in the base station for aligning the terminal device needs to be changed accordingly, so that beam scanning and alignment can be performed again. In short, the base station stores beam ids of downlink beams corresponding to any terminal devices residing in the base station.

Secondly, when the base station needs to page a certain terminal device, paging information of the terminal device is carried in an OFDM symbol which is transmitted by a downlink wave beam aligned with the terminal device and carries a synchronous signal; that is, the OFDM symbol transmitted by the downlink beam aligned with the terminal device carries, in addition to the synchronization signal, paging information of the terminal device, such as PO, and the PO of the terminal device is transmitted only on the beam aligned with the terminal device; similar to the above embodiment, a part of REs except for RE resources carrying synchronization signals in the OFDM symbol are used as PDCCH, where a part of REs are used to carry RAR and a part of REs are used to carry PO, where REs in fixed positions occupied by RAR and PO may be preset in the OFDM symbol, and of course, PO may also occupy PDSCH resources.

The PO can include the paging wireless network temporary identifier P-RNTI (paging radio network temporary identifier) and the resource information of the paging message of the terminal equipment; for example: the method can be simulated by LTE, where the PO includes a P-RNTI corresponding to the terminal device and carries resource information of a paging message of the terminal device, so that if the terminal device detects its own P-RNTI in the PO corresponding to an OFDM symbol of a synchronization signal of a downlink beam, it further detects its own resource information in the PO, and then it can be on a corresponding resource according to the resource information, for example: may be PDSCH resources to receive own paging messages.

The PO is placed in a preset fixed position in the frame structure, and the PO of the corresponding terminal equipment is placed in an OFDM symbol carrying a synchronizing signal of the downlink beam corresponding to the terminal equipment, so that the terminal equipment in an idle state or a connection state knows which synchronizing signal of the OFDM symbol is used for detecting the PO, the PO detection space is saved, and the paging of the base station to the terminal equipment with poor link quality or broken link in high-frequency communication is very convenient.

In another embodiment, the OFDM symbol carrying the synchronization signal corresponding to the terminal device may further carry control format indication information, for indicating a format of a physical downlink control channel; specifically, a part of REs in the OFDM symbol carrying the synchronization signal is used as PCFICH (physical control format indicator channel) resources, that is, a part of REs are fixed in the OFDM symbol carrying the synchronization signal as PCFICH resources, so as to be used for carrying control format indicator information.

The size of PDCCH resources allocated to the terminal device by the base station in different beam directions may also be different due to different traffic demands of the terminal device in different beam directions, and may be dynamically adjusted, and the PCFICH may be used to indicate the resource allocation of the PDCCH in each beam direction. Placing PCFICH on OFDM symbol carrying synchronizing signal in radio frame, wherein PCFICH placed on OFDM symbol of synchronizing signal includes PDCCH resource format information of corresponding beam direction of synchronizing signal, namely PDCCH resource distribution of corresponding beam direction of PCFICH; the PCFICH (which carries PDCCH resource format indication information) as transmitted by beam 1 indicates the resource allocation of the PDCCH of beam 1. The PDCCH resource format indication information may include the resource location of the PDCCH in the beam direction, the number of occupied OFDM symbols, etc. The terminal equipment corresponding to the beam direction detects the PCFICH resource on the synchronous signal, detects the PDCCH of the terminal equipment on the corresponding PDCCH resource according to the indication of the PCFICH, and saves the detection space of the PDCCH.

And placing the PCFICH on the OFDM symbol carrying the synchronizing signal, wherein the PCFICH placed on the OFDM symbol carrying the synchronizing signal is used for indicating the PDCCH resource format information of the synchronizing signal corresponding to the beam direction, namely the OFDM symbol carrying the synchronizing signal and the PCFICH is sent through the beams in all directions, and the PCFICH sent in a certain beam direction indicates the resource format information of the PDCCH in the beam direction, such as the resource position of the PDCCH in the beam direction, the occupied number of OFDM symbols and the like. The terminal equipment corresponding to the beam direction detects the PCFICH in the OFDM symbol of the synchronous signal, and detects the PDCCH on the corresponding PDCCH resource according to the control format indication of the PCFICH, thereby saving the detection space of the PDCCH.

The PDCCH resource format information may indicate resource allocation of the PDCCH for one synchronization signal OFDM symbol beam traversal period for that beam direction. For example, in the frame structure shown in fig. 1, 50 subframes in one 10ms radio frame are total, subframe 0 and subframe 25 are synchronization subframes, each subframe includes 14 OFDM symbols, each OFDM symbol may be sent through multiple beams, the beams of the 28 OFDM symbols traverse all beam directions of the base station, that is, the synchronization beam traversing period is one radio frame, a part of REs are fixed in each synchronization signal OFDM symbol to transmit PCFICH, for example, any OFDM symbol of subframe 0, where the symbol may be sent through multiple beams, and CFI sent in each beam direction of the OFDM symbol indicates resource allocation information of the PDCCH in the beam direction in one synchronization signal OFDM symbol beam traversing period, specifically includes resource allocation information of the PDCCH in the beam direction except for subframe 0 and subframe 25 in the radio frame, where the PDCCH is located, and the resource allocation information may include the number of the OFDM symbol occupied in the subframe, and so on.

The PCFICH in LTE is located in the first OFDM symbol of the subframe, and is carried by CFI (Control Format Indicator), which is used to indicate the number of symbols occupied by the PDCCH in the subframe. The high-frequency communication system may also have different PDCCH resource sizes allocated to the terminal device by the base station in different beam directions due to different traffic demands of the terminal device in different beam directions, and may be dynamically adjusted, so that a function may be added to the PCFICH: to indicate allocation of PDCCHs in respective beam directions.

Placing a CFI on an OFDM symbol carrying a synchronizing signal, wherein the CFI placed on the OFDM symbol of the synchronizing signal is used for indicating PDCCH resource format information of a beam direction corresponding to the synchronizing signal, and the PDCCH resource format information can comprise resource allocation of PDCCH of the beam direction in a beam traversing period of the OFDM symbol of the synchronizing signal, and the like; the CFI carried in the OFDM symbol carrying the synchronizing signal in each beam direction is used for indicating the PDCCH resource allocation information of the beam direction and indicating which OFDM symbol the PDCCH of the beam direction is positioned; that is, in a beam traversing period of one synchronization signal, besides the OFDM symbols carrying the synchronization signal, the resource allocation information of the PDCCH on other OFDM symbols indicates which OFDM symbols the PDCCH is specifically located on.

The CFI occupies PCFICH resources, which corresponds to using a part of REs of an OFDM symbol carrying a synchronization signal as PCFICH.

The above embodiment describes the transmission method of the downlink control signals by taking the downlink control signals as RAR, PO and CFI as examples, but the type of the downlink control signals is not limited to the above 3 types, and other types of downlink control signals may be applied.

The above method for transmitting the downlink control signal may be applied to transmission of PDCCH or PCFICH.

Based on the above method embodiments, corresponding apparatus embodiments are also provided, as follows:

a base station, referring to fig. 5, comprising:

the generating module 501: for generating one or more radio frames;

the sending module 502: the method comprises the steps that one or more wireless frames are sent, the one or more wireless frames comprise a plurality of OFDM symbols carrying synchronous signals, each OFDM symbol carrying the synchronous signals is sent through one or more downlink beams of the base station, the downlink beams of the plurality of OFDM symbols carrying the synchronous signals traverse each sending beam of the base station, and downlink control signals are further carried in the OFDM symbols carrying the synchronous signals.

A terminal device, referring to fig. 6, comprising:

the receiving module 601: the OFDM symbol carrying the synchronization signal is used for receiving the OFDM symbol carrying the synchronization signal, which is sent by the base station through aiming at the downlink wave beam of the terminal equipment, and the OFDM symbol carrying the synchronization signal also carries a downlink control signal;

the detection module 602: and the downlink control signal is used for detecting the position of the set resource element of the OFDM symbol carrying the synchronous signal.

In the above embodiment of the apparatus, the corresponding functional modules perform corresponding steps in the embodiment of the method, and specific steps may refer to corresponding methods, which are not described herein.

In another form of apparatus embodiment, the receiving module may be implemented by a receiver, the transmitting module may be implemented by a transmitter, and other corresponding functional modules, such as a generating module, a detecting module, etc., may be implemented by a processor, and in particular, reference may be made to fig. 9, which is not described in detail herein.

In another embodiment, a scheduling manner may be adopted, when a certain terminal device has a need of using a dedicated PDCCH, reporting the need to a base station, and the base station allocates a PDCCH resource to the terminal device, and the PDCCH resource is placed in an OFDM symbol carrying a synchronization signal and sent to the terminal device by aiming at a downlink beam of the terminal device, where the method is as follows:

a transmission method of PDCCH resources, comprising:

and the base station allocates PDCCH resources to the terminal equipment by aiming at the downlink wave beam of the terminal equipment, wherein the PDCCH resources are positioned in OFDM symbols carrying synchronous signals.

A transmission method of PDCCH resources, comprising:

In the above method, a piece of PDCCH resource is fixed in an OFDM symbol carrying a synchronization signal for scheduling by a terminal device, and the precondition of the method is that beam scanning is completed between a base station and the terminal device, and a downlink beam aligned to the terminal device is determined, and the beam scanning and alignment are described in the above embodiments, which are not described herein.

Referring to fig. 4, the method specifically includes:

301: the terminal equipment sends a request message to a Base Station (BS) to request PDCCH resources;

the terminal equipment requests a special PDCCH resource to the BS for downlink control signal transmission, such as RAR, PO and other downlink control signals; the method can also be used for requesting the special PDCCH resource to be used for specific downlink control signal transmission, such as Uplink grant, resource allocation indication and the like, and can carry the information of a terminal equipment ID, request reasons (such as low requirement on transmission delay by the service type of the terminal equipment, slow mobile user of the terminal equipment, low power consumption and power saving of the terminal equipment) and the like. The signaling that the terminal device requests the PDCCH resource may be carried by a message sent by the terminal device in the random access procedure, for example, carried by message 3 in the random access procedure; or through higher layer signaling, such as RRC signaling carrying, etc.; a dedicated signaling may also be employed;

302: the base station allocates PDCCH resources for the terminal equipment, wherein the PDCCH resources are positioned in OFDM symbols carrying synchronous signals, and the OFDM symbols are transmitted through downlink beams aiming at the terminal equipment.

In the above embodiment, step 301 is optional, in another embodiment, the BS may allocate dedicated PDCCH resources (or dedicated PDCCH resources for a specific downlink control signal) to the terminal device according to the characteristics or service type of the terminal device, and the terminal device does not need to send a request message to the BS; the PDCCH resource is positioned in an OFDM symbol of a synchronizing signal of the downlink beam direction of the terminal equipment and informs the terminal equipment (for example, the PDCCH resource can be carried by a higher layer signaling such as RRC signaling, can be transmitted by using a broadcast channel and the like); the method does not need to allocate the resource of the PDCCH specially, saves signaling overhead, reduces the complexity of blind detection, and further saves the power consumption of terminal equipment;

the frame structure employed in this step is similar to the above embodiment and will not be described in detail.

The BS carries and sends the physical downlink control signal to the terminal equipment on the allocated special PDCCH resource, and sends the physical downlink control signal by aiming at the downlink beam of the terminal equipment, namely the physical downlink control signal is contained in an OFDM symbol of a synchronizing signal of the downlink beam direction of the terminal equipment, and occupies a fixed RE resource; the terminal device knows at which corresponding position of OFDM symbol to search for corresponding downlink control signal, so that blind detection in each PDCCH resource block is not needed as in the prior art, therefore, the scheme reduces blind detection complexity and reduces self power consumption.

a base station, referring to fig. 7, comprising:

the receiving module 701: the method comprises the steps of receiving a PDCCH resource request message sent by a terminal device;

the allocation module 702: and the method is used for distributing PDCCH resources to the terminal equipment through the downlink wave beam aiming at the terminal equipment, and the PDCCH resources are positioned in OFDM symbols carrying synchronous signals.

A terminal device, referring to fig. 8, comprising:

the sending module 801: the method comprises the steps of sending a PDCCH resource request message to a base station;

the receiving module 802: and the PDCCH resource is distributed by the base station and is positioned in an OFDM symbol carrying the synchronous signal.

In the above embodiment of the apparatus, the corresponding functional modules perform corresponding steps in the embodiment of the method, and specific steps may refer to corresponding methods, and other corresponding steps may also be implemented by corresponding modules, which are not described herein.

In another form of embodiment of the apparatus, the receiving module may be implemented by a receiver, the transmitting module may be implemented by a transmitter, and other corresponding functional modules, such as an allocation module, may be implemented by a processor, and in particular reference may be made to fig. 9, which is not described in detail herein.

The base station may be referred to as a transmission reception point TRP (transmission reception point) in the various embodiments described above.

Optionally, the various components of the device in fig. 9 are coupled together by a bus system that includes a power bus, a control bus, and a status signal bus in addition to a data bus.

In the above embodiments, the downlink control channel (or downlink control signal) and the synchronization signal are all arranged in a frequency division manner, that is: put in the same OFDM symbol, occupy different RE, the frequency is different; in addition, the downlink control channel (or downlink control signal) and the synchronization signal may also be arranged in a time division manner, for example: the OFDM symbols are placed in different OFDM symbols, may be adjacent in time, and the OFDM symbols carrying the downlink control channel (or downlink control signal) and the OFDM symbols carrying the synchronization signal form a block, and are transmitted through the same beam, and the two are different in time.

The embodiment discloses a transmission method of downlink control signals, which comprises the following steps:

the base station generates one or more radio frames;

the base station transmits the one or more radio frames, wherein the one or more radio frames comprise a plurality of blocks, each block carries a synchronous signal and a downlink control signal, the synchronous signal and the downlink control signal are arranged in a time division mode, each block is transmitted through one or more downlink beams of the base station, and at least two blocks are transmitted through different beams; at least two of the plurality of blocks include a temporally continuous block.

The above description is given from the two aspects of the base station and the terminal, respectively.

The at least two blocks are transmitted via different beams by: the beam numbers carried by the at least two blocks are different, the reference signal sequences carried by the at least two blocks and used for indicating the beam numbers are different, or the reference signal resource numbers carried by the at least two blocks and used for indicating the beam numbers are different.

The synchronization signal includes PSS and/or SSS, and the PSS and/or SSS included in each block is 1.

Wherein the downlink control signal is carried by PDCCH, PCFICH or PDSCH, for example: the synchronization signal and the PDCCH (or PCFICH or PDSCH) resources occupy different time and may be adjacently arranged.

Based on the above method, the embodiment of the present invention further discloses another type of frame structure, where one or more radio frames include a plurality of blocks, where the plurality of blocks may be continuous in time or discontinuous, and may include at least two blocks that are continuous in time; for example: each block includes an OFDM symbol carrying a synchronization signal and an OFDM symbol carrying a downlink control channel (or downlink control signal), each block being transmitted by one or more downlink beams of the base station, at least two blocks being transmitted by different beams.

Further, the downlink beams of the plurality of blocks may traverse respective transmit beams of the base station. An OFDM symbol carrying a downlink control channel resource (or a downlink control signal) and an OFDM symbol carrying a synchronization signal form a block, and each OFDM symbol in the same block is transmitted by using the same beam. The OFDM symbols carrying the downlink control channel resources (or downlink control signals) are different from the OFDM symbols carrying the synchronization signals.

The above-described radio frame may include a plurality of subframes, and the plurality of blocks may be included in one or more subframes.

Further, the synchronization signal included in each block may be only one part, for example, PSS and/or SSS are each one part; each block also carries only one downlink control channel resource or downlink control signal.

Referring to fig. 10, the synchronization signal may include PSS and/or SSS, and may further include ESS; the synchronization signals (PSS, SSS) and the downlink control channel resources (or downlink control signals) may be arranged in a time division manner, such as (a); further PBCH may be frequency-division arranged with the synchronization signal, such as (b); the synchronization signal and the downlink control channel resource (or downlink control signal) may be arranged in a time division manner, but the PSS and SSS are arranged in a frequency division manner, e.g., (c); the PBCH which is frequency-divided with the synchronous signal can be added on the basis of (c), such as (d); the synchronization signals (PSS, SSS), PBCH, and downlink control channel resources (or downlink control signals) may be arranged in a time division manner, such as (e).

The downlink control channel may be PDCCH, PCFICH or PDSCH;

the downlink control channel resource is used for bearing downlink control signals, such as RAR, PO or CFI; for example: paging information is put into PDSCH and then arranged in a frequency or time division manner with synchronization signals.

The above embodiments of frequency division may be applied to the downlink signal transmission method in a time division manner, and other steps or characteristics are similar, and are not described in detail herein, please refer to fig. 1-4 above, and description of the corresponding embodiments is provided.

The embodiment of scheduling the allocation of resources described in fig. 4 applies equally well in a time division manner.

Corresponding to the method corresponding to the base station, the embodiment of the invention also discloses a transmission device of the downlink control signal, namely, the base station, referring to fig. 5, comprising:

the generation module is used for: for generating one or more radio frames;

and a sending module: the wireless frame transmission device is used for transmitting the one or more wireless frames, the one or more wireless frames comprise a plurality of blocks, each block carries a synchronous signal and a downlink control signal, the synchronous signal and the downlink control signal are arranged in a time division mode, each block is transmitted through one or more downlink beams of the base station, and at least two blocks are transmitted through different beams; at least two of the plurality of blocks include a temporally continuous block.

Corresponding to the method corresponding to the terminal, the embodiment of the invention also discloses a terminal device, and referring to fig. 6, the method comprises the following steps:

It should be appreciated that in embodiments of the present invention, the processor may be a central processing unit (Central Processing Unit, simply "CPU"), the processor may also be other general purpose processors, digital Signal Processors (DSPs), application Specific Integrated Circuits (ASICs), off-the-shelf 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 may include read only memory and random access memory and provide instructions and data to the processor. A portion of the memory may also include non-volatile random access memory. For example, the memory may also store information of the device type.

The bus system may include a power bus, a control bus, a status signal bus, etc., in addition to the data bus. For clarity of illustration, however, the various buses are labeled in the drawings as bus systems.

It should be understood that the term "and/or" is merely an association relationship describing the associated object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

It should be understood that, in various embodiments of the present invention, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. 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 will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown 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 may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

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

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform 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, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A transmission method of downlink control signals includes:

the base station generates one or more radio frames;

the base station transmits the one or more radio frames, wherein the one or more radio frames comprise a plurality of blocks, each block carries a broadcast channel, a synchronous signal and a downlink control signal, the synchronous signal and the downlink control signal are arranged in a time division mode, an Orthogonal Frequency Division Multiplexing (OFDM) symbol carrying the downlink control signal and an OFDM symbol carrying the synchronous signal form a block, the OFDM symbol carrying the downlink control signal and the OFDM symbol carrying the synchronous signal in the same block are transmitted by adopting the same wave beam, each block is transmitted by one or more downlink wave beams of the base station, and at least two blocks are transmitted by different wave beams.

2. The method of claim 1, wherein the at least two blocks carry different beam numbers, the at least two blocks carry different reference signal sequences for indicating beam numbers, or the at least two blocks carry different reference signal resource numbers for indicating beam numbers.

3. The method of claim 1, wherein each block comprises one PSS and one SSS.

4. A method as claimed in any one of claims 1 to 3, wherein the downlink control signal comprises at least one of: random access response, control format indication, paging information, resource allocation information.

5. A method according to any one of claims 1-3, wherein the downlink control signal is carried by a physical downlink control channel, PDCCH, physical control format indication information, PCFICH, or a physical downlink shared channel, PDSCH.

6. A method as recited in any of claims 1-3, wherein the plurality of blocks are consecutive in time, the plurality of blocks being included in one or more subframes of the radio frame.

7. A base station, comprising:

the generation module is used for: for generating one or more radio frames;

and a sending module: the method comprises the steps that one or more radio frames are transmitted, the one or more radio frames comprise a plurality of blocks, each block carries a broadcast channel, a synchronous signal and a downlink control signal, the synchronous signal and the downlink control signal are arranged in a time division mode, an Orthogonal Frequency Division Multiplexing (OFDM) symbol carrying the downlink control signal and an OFDM symbol carrying the synchronous signal form one block, the OFDM symbol carrying the downlink control signal and the OFDM symbol carrying the synchronous signal in the same block are transmitted by adopting the same wave beam, each block is transmitted through one or more downlink wave beams of the base station, and at least two blocks are transmitted through different wave beams.

8. The base station of claim 7, wherein the at least two blocks carry different beam numbers, the at least two blocks carry different reference signal sequences for indicating beam numbers, or the at least two blocks carry different reference signal resource numbers for indicating beam numbers.

9. The base station of claim 7, wherein each block comprises one PSS and one SSS.

10. The base station according to any of claims 7-9, wherein the downlink control signal comprises at least one of: random access response, control format indication, paging information, resource allocation information.

11. The base station according to any of claims 7-9, wherein the downlink control signal is carried by a physical downlink control channel, PDCCH, a physical control format indicator channel, PCFICH, or a physical downlink shared channel, PDSCH.

12. The base station of any of claims 7-9, wherein the plurality of blocks are consecutive in time, the plurality of blocks being included in one or more subframes of the radio frame.

13. A transmission method of downlink control signals includes:

the method comprises the steps that a terminal device receives one or more radio frames, wherein the one or more radio frames comprise a plurality of blocks, each block carries a broadcast channel, a synchronous signal and a downlink control signal, the synchronous signal and the downlink control signal are arranged in a time division mode, an Orthogonal Frequency Division Multiplexing (OFDM) symbol carrying the downlink control signal and an OFDM symbol carrying the synchronous signal form a block, the OFDM symbol carrying the downlink control signal and the OFDM symbol carrying the synchronous signal in the same block are transmitted by adopting the same wave beam, each block is transmitted by one or more downlink wave beams of a base station, and at least two blocks are transmitted by different wave beams;

14. The method of claim 13, wherein the at least two blocks carry different beam numbers, the at least two blocks carry different reference signal sequences for indicating beam numbers, or the at least two blocks carry different reference signal resource numbers for indicating beam numbers.

15. The method of claim 13, wherein each block comprises one PSS and one SSS.

16. The method according to any of claims 13-15, wherein the downlink control signal comprises at least one of: random access response, control format indication, paging information, resource allocation information.

17. The method according to any of claims 13-15, wherein the downlink control signal is carried by a physical downlink control channel, PDCCH, a physical control format indicator channel, PCFICH, or a physical downlink shared channel, PDSCH.

18. The method of any of claims 13-15, wherein the plurality of blocks are consecutive in time, the plurality of blocks being included in one or more subframes of the radio frame.

19. A terminal device, comprising:

And a receiving module: the method comprises the steps that one or more radio frames are received, the one or more radio frames comprise a plurality of blocks, each block carries a broadcast channel, a synchronous signal and a downlink control signal, the synchronous signal and the downlink control signal are arranged in a time division mode, an Orthogonal Frequency Division Multiplexing (OFDM) symbol carrying the downlink control signal and an OFDM symbol carrying the synchronous signal form one block, the OFDM symbol carrying the downlink control signal and the OFDM symbol carrying the synchronous signal in the same block are transmitted by adopting the same wave beam, each block is transmitted by one or more downlink wave beams of a base station, and at least two blocks are transmitted by different wave beams;

and a detection module: and the downlink control signal is used for detecting the set resource element position of the block.

20. The terminal device of claim 19, wherein the at least two blocks carry different beam numbers, the at least two blocks carry different reference signal sequences for indicating beam numbers, or the at least two blocks carry different reference signal resource numbers for indicating beam numbers.

21. The terminal device of claim 19, wherein each block comprises one PSS and one SSS.

22. The terminal device according to any of claims 19-21, wherein the downlink control signal comprises at least one of: random access response, control format indication, paging information, resource allocation information.

23. The terminal device according to any of claims 19-21, wherein the downlink control signal is carried by a physical downlink control channel, PDCCH, a physical control format indicator channel, PCFICH, or a physical downlink shared channel, PDSCH.

24. The terminal device of any of claims 19-21, wherein the plurality of blocks are consecutive in time, the plurality of blocks being included in one or more subframes of the radio frame.

25. A communication device comprising a processor, wherein the method of any of claims 1-6 or 13-18 is performed when the processor invokes a computer program or instructions in memory.

26. A computer readable storage medium storing a computer program or instructions which, when run on a computer, cause the computer to perform the method of any one of claims 1-6 or 13-18.