CN106911999A

CN106911999A - The determination method and device of search space in narrowband systems

Info

Publication number: CN106911999A
Application number: CN201610875329.1A
Authority: CN
Inventors: 石靖; 戴博; 夏树强; 袁弋非; 方惠英; 李书鹏; 陈宪明
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2015-12-23
Filing date: 2016-09-30
Publication date: 2017-06-30

Abstract

The invention provides a kind of determination method and device of search space in narrowband systems, wherein, the method includes：Search space where terminal detection arrowband down control channel, wherein, search space is in time domain in units of R subframe or subframe collection, search space is on frequency domain in units of M subcarrier in whole arrowband or arrowband, wherein R, M value collection are combined into positive integer, subframe is concentrated includes X subframe, and X values are fixed value or are configured by base station.By the present invention, solve the problems, such as that the control channel search space structure in correlation technique in LTE system is not suitable for frequency domain bandwidth and only has 1 demand of the NB IoT narrowband systems of PRB.

Description

The determination method and device of search space in narrowband systems

Technical field

The present invention relates to the communications field, in particular to the determination method and dress of search space in a kind of narrowband systems Put.

Background technology

Machine type communication (Machine Type Communication, referred to as MTC) is also known as machine to machine (Machine to Machine, referred to as M2M), and arrowband Internet of Things (NarrowBand Internet of Things, referred to as Be NB-IoT) be current Internet of Things main application form.Such communication system feature is typically compared to Long Term Evolution (Long Term Evolution, referred to as LTE) narrower bandwidth, such as 1.4MHz, 200kHz from the point of view of system；User terminal or equipment (User Equipment, referred to as UE) quantity is more, including conventional hand terminal and machine, sensor terminal etc.；With covering Lid lifting demand, including covering lifting 15dB or 20dB.

There are three kinds of operative scenarios in current NB-IoT systems：In LTE system frequency band In-band, positioned at LTE system Protection band guard-band, independent service band standalone；Such communication system usually requires that and can both work independently, Can be coexisted with LTE system；Wherein, the transmitted bandwidth of NB-IoT and downstream link sub-carrier interval be respectively 180kHz and 15kHz, respectively with the bandwidth of one Physical Resource Block of LTE system (Physical Resource Block, referred to as PRB) and Subcarrier spacing is identical, is conducive to being reused in NB-IoT systems the relevant design of existing LTE system, when NB-IoT system reuses Global system for mobile communications (Global System for Mobile Communication, referred to as GSM) frequency spectrum and LTE When the frequency spectrum of system is adjacent, it is also beneficial to reduce interfering for two systems.

Using downstream grants (DownLink grant, referred to as DL grant) and up awarded respectively in existing LTE system Weigh the downlink data transmission and transmitting uplink data of (UpLink grant, referred to as UL grant) dispatch terminal；Wherein, DL Grant and UL grant are referred to as Downlink Control Information (Downlink Control Information, referred to as DCI), make With under Physical Downlink Control Channel (Physical Downlink Control Channel, referred to as PDCCH) or enhancing physics Row control channel (Enhanced Physical Downlink Control Channel, referred to as EPDCCH) is carried.It is descending Deta bearer in downlink traffic channel (Physical Downlink Shared Channel, referred to as PDSCH), upper line number According to being carried in reverse link traffic channel (Physical Uplink Shared Channel, referred to as PUSCH).Existing LTE systems PDCCH uses preceding 1-4 OFDM (Orthogonal Frequency Division in system bandwidth in system Multiplexing, abbreviation OFDM) resource in symbol, with control channel unit (Control Channel Element, letter CCE) it is called basic aggregate resource granularity, transmission means uses transmission diversity.EPDCCH is used in the part PRB in system bandwidth Resource, with strengthen control channel unit (Enhanced Control Channel Element, abbreviation ECCE) for substantially gather Resource granularity is closed, transmission means uses localized transmission or distributed transmission.

Because the relay physical downlink control channel search space in correlation technique is located in the preceding 1-4 OFDM symbol of system bandwidth, The used polymerization grade of the descending control letter of enhancing is only existed with a subframe, and part PRB constitutes search space frequently in subframe Gather in domain.Therefore, the control channel search space structure in correlation technique in LTE system is not suitable for frequency domain bandwidth and only has 1 The demand of the NB-IoT narrowband systems of individual PRB.For the above mentioned problem in correlation technique, not yet there is effective solution party at present Case.

The content of the invention

The invention provides a kind of determination method and device of search space in narrowband systems, at least to solve correlation technique Control channel search space structure in middle LTE system is not suitable for frequency domain bandwidth and only has 1 NB-IoT narrowband systems of PRB Demand problem.

According to an aspect of the invention, there is provided in a kind of narrowband systems search space determination method, including：Terminal Search space where detection arrowband down control channel, wherein, the search space is in time domain with R subframe or subframe collection Be unit, the search space on frequency domain in units of M subcarrier in whole arrowband or arrowband, wherein R, M value set It is positive integer, the subframe is concentrated includes X subframe, X values are fixed value or are configured by base station.

Alternatively, the search space is continuous or discrete in time domain, wherein, the cover type that the search space is supported Including one or more, every kind of cover type corresponds to unique R values or a set for including multiple R values, and R represents descending control The number of repetition of channel processed.

Alternatively, the search space continuously includes in time domain：The search space it is continuous in units of subframe collection and/ Or the search space is continuous in units of subframe.

Alternatively, the search space is determined by least one of following parameter：Initial subframe, subframe collection size, weight Again count or sub-frame number, detection cycle, sub-band or sub-carrier positions, wherein it is determined that the parameter of the search space is pre- Definition or the configuration of fixed or base station.

Alternatively, the initial subframe determines according at least one of following parameter：Maximum number of repetitions Rmax, deviant Offset, radio frame number SFN, cycle M；Wherein it is determined that mode include at least one of：Initial subframe number is index Index k, and meet the subframe of (10*SFN+k) mod Rmax=0；Initial subframe number is index k, and meets (10*SFN + k) mod N*Rmax=0 subframe, N is the positive integer more than 0；Initial subframe number is index k, and meets (10*SFN+ K) subframe of mod M=0, M is the positive integer more than or equal to Rmax；Initial subframe number is index k, and meets (10*SFN+ K+offset) the subframe of mod M=0, M is the positive integer more than or equal to Rmax；Initial subframe number is index k, and is met The subframe of (10*SFN+k+X*offset) mod M=0, M is the positive integer more than or equal to Rmax, and X is the positive integer more than 0.

Alternatively, the value set in the initial subframe corresponding cycle is according to cover type determination, the initial subframe The value in corresponding cycle is configured or fixed by base station；And/or, the value set of deviant offset or value are according to covering class Type and/or cycle determine；Or, the value of the deviant offset is configured by base station or is fixed or determined according to the cycle.

Alternatively, taking for the initial subframe corresponding cycle of search space where the down control channel of UL grant is carried Value set determines according at least one of：Cover type, reverse link traffic channel PUSCH forms, the carrying UL grant's The value in the initial subframe corresponding cycle of search space where down control channel is configured or fixed by base station；And/or, skew The value set of value offset or value determine according at least one of：Cover type, cycle, reverse link traffic channel PUSCH Form；Or, the value of the deviant offset is configured by base station or fixed or implied according to the cycle determining.

Alternatively, in big cover type, cycle M and/or deviant offset is more than value during small cover type.

Alternatively, the subframe collection size is configured by fixed or base station and determined.

Alternatively, the consecutive hours in time domain, the initial subframe is the first subframe of subframe collection.

Alternatively, in the search space in time domain consecutive hours, repeatedly transmit polymerization etc. in the subframe that uses and subframe Level AL includes one of in the following manner：When in the absence of the subframe collection, since initial subframe a sub- frame in AL=1, 2nd, at least one of 4 repeat to transmit R subframe；When there is the subframe collection, in the subframe collection since initial subframe In with AL=1,2,4,8,16, at least one of 32 repeat transmit R subframe collection；Wherein, repeat to pass since initial subframe When the defeated R subframe or the subframe collection, the subframe for being used is available subframe.

Alternatively, the search space at least includes：The upload control search space of uplink authorization UL grant and descending Authorize the descending command deployment space of DL grant.

Alternatively, the upload control search space is entirely different with the resource that the descending command deployment space uses Resource or respective separate configurations resource.

Alternatively, the composition form of Candidate Set includes one of in the following manner in the search space：The Candidate Set is by one Plant or various polymerization grades and various numbers of repetition composition, and the initial subframe phase corresponding to the Candidate Set of different numbers of repetition Together；The Candidate Set is made up of one or more polymerization grade and various numbers of repetition, and different number of repetition Candidate Set institute Corresponding initial subframe is different, and the Candidate Set corresponding to non-maximum number of repetitions has multiple in the search space；The time Selected works are made up of various polymerization grades and a kind of number of repetition；The Candidate Set is made up of a kind of polymerization grade, wherein, the time Selected works take all control channel units in the search space；Polymerization grade corresponding to the Candidate Set is according to different application Scape determination, wherein, the application scenarios at least include：With interior Inband scenes, independent service band standalone, protection band Guardband scenes.

Alternatively, when the search space is discrete in time domain, used in window in units of detecting window or scheduling window Part or all of resource；Or, when discrete and down control channel repeats to transmit in time domain for the search space, to detect window Or scheduling window is that unit using part or all of resource and is carried out in window and/or time domain is repeated between window in window.

Alternatively, in the detection window or the scheduling window, the down control channel and downlink traffic channel time-division Multiplexing, or the down control channel the resource time division multiplex that is used of different cover types.

Alternatively, when repeating to transmit, subframe collection of the search space in the detection window is not repeated or repetition time Number can be pre-configured with.

Alternatively, the search space is determined by least one following parameter：Initial subframe, subframe collection, number of repetition, Number of repetition, repetition window long, detection cycle, sub-band or sub-carrier positions in scheduling window or detection window, wherein it is determined that described search The mode in rope space is predefined or fixed or base station configuration.

Alternatively, the terminal detects that the mode of initial control channel unit includes in the search space：It is fixed or Base station configure or according to hash functions between subframe or subframe collection or radio frames or detection window or search space iteration, wherein, When repeating to transmit, each subframe/subframe for repeating transmission is concentrated use in identical control channel unit, the base station configuration Mode includes：The proprietary radio resource control RRC configuration starting index of user equipment (UE) and/or deviant offset, all UE rise Begin identical.

Alternatively, the composition form of Candidate Set includes one of in the following manner in the search space：The Candidate Set is by one Plant or various polymerization grades and various numbers of repetition composition, and the initial subframe phase corresponding to the Candidate Set of different numbers of repetition Together；The Candidate Set is made up of one or more polymerization grade and various numbers of repetition, and different number of repetition Candidate Set institute Corresponding initial subframe is different, and the Candidate Set corresponding to non-maximum number of repetitions has multiple in search space；The Candidate Set It is made up of various polymerization grades and a kind of number of repetition；The Candidate Set is made up of a kind of polymerization grade, wherein, the Candidate Set Take all control channel units in the search space；Polymerization grade corresponding to the Candidate Set is true according to different application scene It is fixed, wherein, the application scenarios at least include：With interior Inband scenes, independent service band standalone, protection band Guardband scenes；Wherein, the number of repetition determines by number of repetition between window, or simultaneously by window between number of repetition and window Number of repetition determines.

Alternatively, the search space carries out time division multiplex with different type, different messages or different user/user's group.

Alternatively, when the search space is unit by portion subcarriers on frequency domain, frequency division multiplexing mode includes following At least one：Between same type channel between frequency division multiplex FDM, different types of channels between FDM, different cover types FDM between FDM, different messages type, in units of strengthening control channel unit ECCE it is multiplexed different types of channels.

Alternatively, in the frequency division multiplexing down control channel scheduling indicating downlink Traffic Channel mode include it is following extremely It is one of few：Indicate follow-up occupancy subframe position in same sub-band or sub-carrier positions；Indicated across sub-band or subcarrier different Subframe position is taken in sub-band；Indicate subsequently to take subframe position and across son in same sub-band or sub-carrier positions simultaneously Frequency band or subcarrier indicate to take subframe position in different sub-bands.

Alternatively, in the down control channel dispatching downlink Traffic Channel, starting of the downlink traffic channel Frame and the down control channel terminate interval between subframe in units of subframe or scheduling window, wherein, the downlink business The value that the initial subframe and the down control channel of channel terminate to be spaced between subframe is fixed value or variable value；Wherein, The span of the variable value determines according at least one of following parameter：Detection cycle, scheduling window, cover type, physics Uplink Shared Channel PUSCH forms.

Alternatively, it is described up when uplink authorization UL grant down control channel schedule upstream traffic channels are carried The initial subframe and the down control channel of Traffic Channel terminate interval between subframe in units of subframe or scheduling window, its In, the value that the initial subframe and the down control channel of the reverse link traffic channel terminate to be spaced between subframe is fixed value Or variable value.

Alternatively, when definition relation is determined in units of window to dispatch, scheduling window is long in the up of different sub-carrier interval It is identical or be independently determined during single carrier single tone transmission channels.

Alternatively, the uplink authorization UL grant indicate initial subframe position of the reverse link traffic channel in window.

Alternatively, the uplink authorization UL grant indicate the uplink single-carrier transmission of different sub-carrier gap size.

Alternatively, uplink single-carrier transmission of the uplink authorization UL grant to different sub-carrier gap size uses phase Same resource distribution instruction bit field.

Alternatively, the search space where the terminal detection arrowband down control channel is configured to one by high-level signaling Or it is multiple, including at least one of：Individual process is only supported, base station is that terminal configures a search sky by high-level signaling Between；Multiple processes are supported, base station is that terminal configures a search space by high-level signaling；Multiple processes are supported, base station passes through High-level signaling is that terminal configures multiple search spaces, and wherein at least one process is located at different search spaces from other processes In.

Alternatively, it is described to support multiple processes, when base station is that terminal configures a search space by high-level signaling, at this The scheduling timing of down control channel dispatching downlink Traffic Channel or reverse link traffic channel in search space determines that method includes At least one of：Value in the first timing value set that the Downlink Control Information carried by down control channel is indicated It is determined that；Value in the second timing value set that the Downlink Control Information carried by first down control channel is indicated is true It is fixed, and being carried relative to the i-th -1 down control channel of passing through that the downlink information that i-th down control channel carry indicates Downlink Control Information scheduling Traffic Channel terminate subframe deviant determine, i is the positive integer more than 1；By first Value determination in the second timing value set that the Downlink Control Information that down control channel is carried is indicated, and by i-th Value in the first timing value set that the downlink information that individual down control channel is carried is indicated determines that i is just whole more than 1 Number.

According to another aspect of the present invention, there is provided the determining device of search space in a kind of narrowband systems, its feature It is, including：Detection module, the search space where for detecting arrowband down control channel, wherein, the search space exists In time domain in units of R subframe or subframe collection, the search space is on frequency domain with M subcarrier in whole arrowband or arrowband It is unit, wherein R, M value collection are combined into positive integer, and the subframe is concentrated includes X subframe, and X values are for fixed value or by base station Configuration.

In the present invention, by detecting arrowband down control channel where search space, wherein, search space is in time domain On in units of R subframe or subframe collection, search space on frequency domain in units of M subcarrier in whole arrowband or arrowband, Wherein R, M value collection are combined into positive integer, and subframe is concentrated includes X subframe, and X values are fixed value or are configured by base station, are realized How to determine search space in narrowband systems, it is right to have reached different messages type, different cover types by time division transmission The effect of blocking rate reduction between the down control channel answered, the control channel search solved in correlation technique in LTE system is empty Between structure be not suitable for frequency domain bandwidth and only have 1 problem of the demand of the NB-IoT narrowband systems of PRB.

Brief description of the drawings

Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this hair Bright schematic description and description does not constitute inappropriate limitation of the present invention for explaining the present invention.In the accompanying drawings：

Fig. 1 is the flow chart of the determination method of search space in narrowband systems according to embodiments of the present invention；

Fig. 2 is the structured flowchart of the determining device of search space in narrowband systems according to embodiments of the present invention；

Fig. 3 is the schematic diagram of the search space consecutive hours in time domain according to alternative embodiment of the present invention；

Fig. 4 is schematic diagram when discrete in time domain according to the search space of alternative embodiment of the present invention；

Fig. 5 is the control and data time division multiplex according to alternative embodiment of the present invention, different cover types in control area Time-multiplexed schematic diagram；

Fig. 6 is the control and data time division multiplex according to alternative embodiment of the present invention, is no longer covered with difference in control area Cover time-multiplexed schematic diagram；

Fig. 7 is the different covering time division multiplexes according to alternative embodiment of the present invention, control area and data in same covering Distinguish time division multiplex schematic diagram again；

Signal when Fig. 8 is control and data time division multiplex and the discrete control area according to alternative embodiment of the present invention Figure；

Fig. 9 is that search space according to embodiments of the present invention is entered with different type, different messages, different user/user's group The schematic diagram of row time-division；

Down control channel is to downlink business when Figure 10 is the downlink resource frequency division multiplexing according to alternative embodiment of the present invention Channel follow-up schematic diagram for taking subframe position in only indicating same sub-band or sub-carrier positions in resource instruction；

Down control channel is believed downlink business when Figure 11 is according to alternative embodiment downlink resource frequency division multiplexing of the present invention Road takes subframe position and starting subframe identical schematic diagram in the different sub-bands of only across sub-band instructions in resource instruction；

Down control channel is believed downlink business when Figure 12 is according to alternative embodiment downlink resource frequency division multiplexing of the present invention Road in indicating same sub-band or sub-carrier positions simultaneously in resource instruction it is follow-up take subframe position and across sub-band or Subcarrier indicates the schematic diagram of occupancy subframe position in different sub-bands；

Down control channel is to downlink business when Figure 13 is the downlink resource frequency division multiplexing according to alternative embodiment of the present invention Channel is follow-up in indicating same sub-band or sub-carrier positions simultaneously in resource instruction to take subframe position and across sub-band Or subcarrier indicates to take subframe position and different sub-band starting subframe identical schematic diagrames in different sub-bands；

Figure 14 is the Rin time domain Candidate Sets position relative position identical signal in window according to alternative embodiment of the present invention Figure.

Specific embodiment

Describe the present invention in detail below with reference to accompanying drawing and in conjunction with the embodiments.It should be noted that not conflicting In the case of, the feature in embodiment and embodiment in the application can be mutually combined.

It should be noted that term " first ", " in description and claims of this specification and above-mentioned accompanying drawing Two " it is etc. for distinguishing similar object, without for describing specific order or precedence.

A kind of determination method of search space in narrowband systems is provided in the present embodiment, and Fig. 1 is according to of the invention real The flow chart of the determination method of search space in the narrowband systems of example is applied, as shown in figure 1, the flow comprises the following steps：

Step S102：Terminal determines arrowband search space position；

Step S104：Terminal it is determined that arrowband search space in detect arrowband down control channel, wherein, search space In time domain in units of R subframe or subframe collection, search space is with M subcarrier in whole arrowband or arrowband on frequency domain Unit, wherein R, M value collection are combined into positive integer, and subframe concentrates the X subframe for including, X values are fixed or base station is configurable.

It should be noted that the step S102 and step S104 in the present embodiment are to the descending control letter in terminal detection arrowband The search space in road is explained further.

In addition, the search space in the present embodiment refers to various application scenarios, such as with interior inband, protection band Guardband, independent service band standalone；And various cover types, such as normal, medium, extreme's Basic composition, or the elementary cell for constituting, the arrowband being related in this alternative embodiment are 200kHz or 180kHz, common with LTE The Physical Resource Block PRB defined using LTE when depositing, correspondence 180kHz, arrowband is 1 PRB, wherein, number of sub carrier wave has 12 It is individual.When coexisting or work independently with LTE in time domain, subframe using LTE define subframe comprising 14 OFDM symbols and when Between it is upper continue 1ms, subframe collection is fixed or predefined or several subframes for configuring of base station, and the subframe included in subframe collection is Continuous subframe or discrete subframe or several the continuous or discrete subframes in certain dispatching cycle or detection cycle, son Number of frames can selected value for set { 1,2,4,6,8,10,16,20 } or its subset.Base station configuration includes being configured using SIB or RRC It is cell-specific types or the mode of UE-specific types.

In the optional embodiment of the present embodiment, the search space being related in the present embodiment is configured to by high-level signaling One or more, including at least one of：Individual process is only supported, base station is that terminal configures a search by high-level signaling Space；Multiple processes are supported, base station is that terminal configures a search space by high-level signaling；Multiple processes are supported, base station leads to High-level signaling is crossed for terminal configures multiple search spaces, wherein at least one process is located at different search spaces from other processes In；

Specifically, when individual process is only supported, base station is that terminal configures a search space by high-level signaling；Support Multiple processes, base station is that terminal configures a search space by high-level signaling；Multiple processes are supported, base station passes through high-level signaling For terminal configures multiple search spaces, wherein at least one process is located in different search spaces from other processes；Wherein search The particular content in rope space is as described herein.

Further, multiple processes are supported described, when base station is that terminal configures a search space by high-level signaling, The scheduling timing of down control channel dispatching downlink Traffic Channel or reverse link traffic channel in the search space determines method Including at least one of：

Value in the first timing value set that the Downlink Control Information carried by down control channel is indicated determines； In dispatching downlink Traffic Channel, wherein the first timing value set is preferably：{ 0,4,8,12,16,20,24,28 }, or 0, 8,12,16,32,48,64 }, or { 0,1,2,3,4,5,6,8,10 }, or R1* { 0,1,2,3,4,5,6,8,10 }-R2 4,；Wherein R1 represents the number of repetition of scheduled downlink traffic channel, and R2 represents the number of repetition of down control channel.Wherein descending control Information processed Traffic Channel scheduled when being downstream grants is downlink traffic channel.In schedule upstream traffic channel, wherein the One timing value set is preferably：{ 8,12,16,20 }, or { 8,12,16,32 }, or { 8,10,12,14 }, orOrOr OrWherein R1 represents the number of repetition of scheduled reverse link traffic channel, and R2 is represented The number of repetition of down control channel.Time domain length when representing that reverse link traffic channel is single Resource Unit, such as the institute of table 1 Show, N_RURepresent the number of resource units that reverse link traffic channel is included, wherein N_RUValue for set 0,1,2,3,4,5,6,8, One of 10 }.Scheduled Traffic Channel is reverse link traffic channel when wherein Downlink Control Information is uplink authorization.

Table 1

Taking in the second timing value set that the Downlink Control Information carried by first down control channel is indicated Value determines, and pass through that the downlink information that i-th down control channel carry indicates relative to the i-th -1 down control channel The deviant that the Traffic Channel of the Downlink Control Information scheduling of carrying terminates subframe determines that i is the positive integer more than 1；In scheduling During downlink traffic channel, wherein the second timing value collection be combined into { 0,4,8,12,16,32,64,128 } or 0,16,32,64, 128、256、512、1024}.When multiple processes are 2 processes to the maximum, i=2；When multiple processes are 4 processes to the maximum, i =2,3,4；When multiple processes are 8 processes to the maximum, i=2,3,4,5,6,7,8；Deviant is preferably from the 3rd timing value collection Chosen in conjunction, the 3rd timing value set is preferably：{ 0,1,2,3,4,5,6,7,8 }, or { 0,2,4,6,8,10,12,14 }, or { 0,1,2,3,4,6,8,10 }, or { 0,2,4,6,8,12,16,20 }, or { 0,1,2,3,4,8,12,16 }.Wherein i-th descending Control channel is identical with the Downlink Control Information type that the i-th -1 down control channel is carried, i.e., be all downstream grants.Wherein I down control channel and the i-th -1 down control channel are and are sent to identical UE.Wherein Downlink Control Information is awarded for descending Temporary scheduled Traffic Channel is downlink traffic channel.In schedule upstream traffic channel, wherein the second timing value set It is { 8,16,32,64 }.When multiple processes are 2 processes to the maximum, i=2；When multiple processes are 4 processes to the maximum, i=2, 3、4；When multiple processes are 8 processes to the maximum, i=2,3,4,5,6,7,8；Deviant is preferably from the 3rd timing value set Choose, the 3rd timing value set is preferably：{ 0,1,2,3 }, or { 0,2,4,6 }, or { 0,2,6,10 }, or { 0,4,8,12 }, Or { 0,1,3,5 }.The Downlink Control Information type that wherein i-th down control channel and the i-th -1 down control channel are carried It is identical, i.e., all it is uplink authorization.Wherein i-th down control channel be with the i-th -1 down control channel be sent to it is identical UE.Scheduled Traffic Channel is reverse link traffic channel when wherein Downlink Control Information is uplink authorization.

Taking in the second timing value set that the Downlink Control Information carried by first down control channel is indicated Value determines, and the value in the first timing value set for passing through the downlink information instruction of i-th down control channel carrying It is determined that, i is the positive integer more than 1；In dispatching downlink Traffic Channel, wherein the second timing value collection be combined into 0,4,8,12, 16th, 32,64,128 } or { 0,16,32,64,128,256,512,1024 }.When multiple processes are 2 processes to the maximum, i=2； When multiple processes are 4 processes to the maximum, i=2,3,4；When multiple processes are 8 processes to the maximum, i=2,3,4,5,6,7, 8；Wherein the first timing value set is preferably：{ 0,4,8,12,16,20,24,28 }, or { 0,4,8,12,16,32,48,64 }, Or { 0,1,2,3,4,5,6,8,10 }, or R1* { 0,1,2,3,4,5,6,8,10 }-R2；Wherein R1 represents scheduled business letter The number of repetition in road, R2 represents the number of repetition of down control channel.Wherein i-th down control channel is descending with the i-th -1 The Downlink Control Information type that control channel is carried is identical, i.e., be all downstream grants.Wherein i-th down control channel and i-th- 1 down control channel is and is sent to identical UE.Scheduled Traffic Channel when wherein Downlink Control Information is downstream grants It is downlink traffic channel.In dispatching downlink Traffic Channel, wherein the second timing value collection is combined into { 8,16,32,64 }.Work as multiple When process is 2 processes to the maximum, i=2；When multiple processes are 4 processes to the maximum, i=2,3,4；When multiple processes are 8 to the maximum During individual process, i=2,3,4,5,6,7,8；Wherein the first timing value set is preferably：{ 8,12,16,20 }, or 8,12,16, 32 }, or { 8,10,12,14 }, or OrOrOr Wherein R1 represents the weight of scheduled reverse link traffic channel Again count, R2 represents the number of repetition of down control channel.Represent reverse link traffic channel when being single Resource Unit when Length of field, as shown in table 2, N_RURepresent the number of resource units that reverse link traffic channel is included, wherein N_RUValue for set 0, One of 1st, 2,3,4,5,6,8,10 }.Wherein i-th down control channel is descending with what the i-th -1 down control channel was carried Control information type is identical, i.e., be all uplink authorization.Wherein i-th down control channel is equal with the i-th -1 down control channel To be sent to identical UE.Scheduled Traffic Channel is reverse link traffic channel when wherein Downlink Control Information is uplink authorization.

In the optional embodiment of the present embodiment, the search space being related in the present embodiment it is continuous in time domain or from Dissipate, wherein, the cover type that the search space is supported includes one or more, the unique R values of every kind of cover type correspondence or The individual set including multiple R values, R represents the number of repetition of down control channel.

In the concrete application scene of the present embodiment, for the cover type being related in the present embodiment, in every kind of covering When type uniquely supports a R value, normal covering correspondence R1, medium covering correspondence R2, extreme covering correspondences R3； When every kind of cover type supports a R value set, when each value set is separate, such as normal coverings correspondence R1, R2, R3, R4 }, medium coverings correspondence { R5, R6, R7, R8 }, extreme coverings correspondence { R9, R10, R11, R12 }；Each value set When mutual is overlapped, such as normal coverings correspondence { R1, R2, R3, R4 }, medium coverings correspondence { R3, R4, R5, R6 }, extreme Covering correspondence { R5, R6, R7, R8 }.

Search space consecutive hours in time domain, can refer in the present embodiment：Search space is with subframe collection Unit is continuous and/or search space is continuous in units of subframe.Based on this, the parameter that the search space passes through at least one of It is determined that：Initial subframe, number of repetition or sub-frame number, detection cycle, sub-band or sub-carrier positions, wherein it is determined that search is empty Between parameter be predetermined configuration or fixation or base station configuration.It should be noted that fixation refers to determine the ginseng of search space Number is determined directly as fixing value in a standard without base station configuration.

Wherein, base station configuration can be that SIB or RRC are configured, for example, the initial subframe in the configuration parameter：(1) lead to Spend cycle determination (such as first subframe in the cycle)；(2) or cycle+offset determine；Length：I.e. number of repetition is (either No to there is subframe collection, number of repetition is the number of repetition in units of subframe or subframe collection) or sub-frame number (when in the absence of subframe Number of repetition is equal to sub-frame number during collection), when search space there are multiple R, the value is defined by the maximum Rmax of R, and this is heavy Multiple used subframe can be physical sub-frame or can use subframe；Cycle：The parameter is needed more than Rmax.It is preferred that the integer of Rmax Times, or integral multiple+offset；Sub-band or sub-carrier positions：Be only applicable to search space do not extended around on frequency domain 1PRB or The situation of whole arrowband, also needs to configure subcarrier in frequency domain resource during configuration sub-frame resources, for example, configure { number of sub frames S, subcarrier Number C }；Such as：{ 8 subframe, 3 subcarrier }, { 16 subframe, 3 subcarrier }, { 32 subframe, 3 subcarrier}；{ 4 subframe, 6 subcarrier }, { 8 subframe, 6 subcarrier }, 16 subframe, 6 subcarrier } etc..

Can be determined according at least one of following parameter for the above-mentioned initial subframe being related to：Maximum number of repetitions Rmax, deviant offset, radio frame number SFN, cycle M；And be based on above-mentioned parameter determination mode can include it is following at least One of：Initial subframe number is index index k, and meets the subframe of (10*SFN+k) mod Rmax=0；Or, initial subframe Numbering is index k, and meets the subframe of (10*SFN+k) mod N*Rmax=0, and N is the positive integer more than 0；Or, starting Frame number is index k, and meets the subframe of (10*SFN+k) mod M=0, and M is the positive integer more than or equal to Rmax；Or, rising Beginning subframe number is index k, and meets the subframe of (10*SFN+k+offset) mod M=0, and M is more than or equal to Rmax just Integer；Or, initial subframe number is index k, and meets the subframe of (10*SFN+k+X*offset) mod M=0, M be more than Positive integer equal to Rmax, X is the positive integer more than 0.

The value set in the corresponding cycle of initial subframe described in the above-mentioned initial subframe being related to is according to covering in the present embodiment Lid type determines that value is configured or fixed by base station.And/or deviant offset determines value according to cover type and/or cycle Set or value, are configured by base station or are fixed or according to cycle implicit determination.Can all exist with cycle and deviant, or only Cycle does not have deviant.

Wherein, the value set in the initial subframe corresponding cycle determines that value is configured by base station according to cover type Or it is fixed, for example, cover type x3 (such as extreme coverings) corresponding cycle value collection is combined into { M10, M9, M8, M7 } when by base Stand configuration when, one of them is worth to terminal notification cycle value to configure (signaling) by SIB or RRC, and now signaling is used 2bit indicates four kinds of cycle values.Cover type x2 (such as medium coverings) corresponding cycle value collection is combined into and cover type x3 Have common factor situation such as { M8, M7, M6, M5 } or with cover type x3 without occur simultaneously situation such as { M6, M5, M4, M3 }, pass through SIB or RRC configure one of them and are worth to terminal notification cycle value.Element number is merely illustrative in above-mentioned set.Cycle value For example, 1,2,4,8,16,32,64,128,256ms or 10,20,30,40,80,100ms etc..Deviant offset is according to covering Type and/or cycle determine value set or value, are configured by base station or are fixed or according to cycle implicit determination.For example, covering class Type x3 (such as extreme coverings) corresponding offset values collection is combined into { z1, z2, z3, z4 } when being configured by base station, by SIB Or RRC configures one of them and is worth and gives terminal notification offset values.Or according to cycle implicit determination, when base station, configuration cycle is Where Mi or Mi during set, offset corresponds to set where zi or zi, according to implicit corresponding table 2 determination value or value collection Close, one of them value of base station configuration when value set is defined as；It should be noted that in only configuration cycle simultaneously without inclined During shifting value, 0 is equivalent to the zi values.

Table 2

Cycle M	Deviant offset
		M1	Z1 or { z1, z2, z3, z4 }
M2	Z2 or { z1, z2, z3, z4 }
		…	…
Mi	Zi or { z (i-1), zi, z (i+1), z (i+2) }

Additionally, the initial subframe corresponding cycle of search space where the down control channel of the carrying UL grant Value set determines that value is configured or fixed by base station according at least one cover type, reverse link traffic channel PUSCH forms, And/or deviant offset determines value set according at least one cover type, cycle, reverse link traffic channel PUSCH forms Or value, configured by base station or fixed or according to cycle implicit determination.

Specifically, PUSCH forms include：Single tone transformats, multiple tones transformats, wherein Single tone transformats are further divided into the single tone transformats at different sub-carrier interval again.The carrying UL The value set in the initial subframe corresponding cycle of search space where the down control channel of grant according to cover type, on At least one row Traffic Channel PUSCH forms determine that value is configured or fixed by base station, for example, cover type x3 is (such as Extreme cover) when the corresponding cycle value collection of single tone PUSCH forms be combined into { M10, M9, M8, M7 } when by base station During configuration, one of them is worth to terminal notification cycle value to configure (signaling) by SIB or RRC, and now signaling is used 2bit indicates four kinds of cycle values.The corresponding cycle value collection of multiple tones PUSCH forms is combined into and single Cycle corresponding to tone PUSCH forms have common factor situation such as { M8, M7, M6, M5 } or with its without occur simultaneously situation as M6, M5, M4, M3 }, one of them is configured by SIB or RRC and is worth to terminal notification cycle value.Similarly it is applied to and single The corresponding PUSCH forms in tone different sub-carriers interval, such as 3.75kHz and 15kHz.Deviant offset is according to covering class At least one type, cycle, reverse link traffic channel PUSCH forms determine value set or value, are configured by base station or fixed or root According to cycle implicit determination.For example, single tone PUSCH forms are corresponding during cover type x3 (such as extreme coverings) Offset value collection is combined into { z1, z2, z3, z4 } when being configured by base station, configures one of them by SIB or RRC and is worth to terminal Notify offset values.Or according to cycle implicit determination, when set where base station configuration cycle is Mi or Mi, offset pairs Set where should be zi or zi, value or value set are determined according to implicit corresponding table 2, and when value set is defined as, base station is matched somebody with somebody Put one of them value；

Table 3

In concrete application scene, base station use X bit configuration cycles M and/or deviant offset when, only instruction M, Offset for the moment, indicates 2.^X kind value set.For example when only indicating M using 3bit, value set M0, M1, M2, M3, M4, M5, M6, M7 } in indicate the one of which cycle and to determine initial subframe according to (10*SFN+k) mod M=0 modes.Difference is covered The middle element of the M value set that lid type is used can be identical with identical or different or part.When indicating M, offset at the same time, refer to Show 2.^X kinds { M, offset } value set.For example when only indicating M, offset using 3bit, value set (M0, offset0)、(M1,offset1)、(M2,offset2)、(M3,offset3)、(M4,offset4)、(M5,offset5)、 (M6, offset6), (M7, offset7) } in indicate one of which combination, or son the cycle { M0, M1 } with offset0, Offset1, offset2, offset3 } indicate in any combination, it is and true according to (10*SFN+k+offset) mod M=0 modes Fixed starting subframe.

In addition, the subframe collection size for being related in the present embodiment is configured by fixed or base station and determined.Preferably, exist Consecutive hours in time domain, initial subframe is the first subframe of subframe collection.

Alternatively, in search space in time domain consecutive hours, repeatedly transmit polymerization grade in the subframe and subframe for using (Aggregation Level, referred to as AL) includes one of in the following manner：

When in the absence of subframe collection, in a sub- frame in the weight of AL=1,2, at least one of 4 since initial subframe R subframe is transmitted again；

When there is subframe collection, since initial subframe subframe concentrate with AL=1,2,4,8,16,32 at least it One repeats to transmit R subframe collection；Wherein, when transmission R subframe or subframe collection is repeated initial subframe, the subframe for being used To can use subframe.

Furthermore, it is necessary to explanation, the search space being related in the present embodiment at least includes：Uplink authorization UL grant Upload control search space and downstream grants DL grant descending command deployment space.Wherein, upload control search space The resource used with descending command deployment space is the resource of entirely different resource or respective separate configurations.

That is, resource can for portion subcarriers or part OFDM symbol or fractional control channel unit or subframe or Subframe collection, subsequently illustrates by taking subframe as an example.It is entirely different for the two resource, subframe during institute configurating downlink search space Resource is configured in units of available subframe, the sub-frame resources that up search space is used defined in unavailable subframe；Or Person defines up search space and can use subframe, and avoiding up search space can use son with configurating downlink search space after subframe Frame.For the two resource separate configurations, i.e., up search space is with descending search space using sub-frame resources using resource Base station separate configurations, configuration subframe can be identical or entirely different with identical or part.

Additionally, in the optional embodiment of the present embodiment, terminal detects initial control channel unit in search space Determination mode include base station configure or according to hash functions between subframe or radio frames or detection window or search space iteration.When When repeating to transmit, each subframe/subframe for repeating transmission is concentrated use in identical control channel unit.

For the optional embodiment, during without subframe set, Alt1：AL=4ECCE, initial subframe determines start bit Put, 4ECCE is used in subframe, initial always ECCE index 0；Alt2-1：AL=1,2,4ECCE, initial ECCE are fixed as The integral multiple position of polymerization grade or by configuring determination, repetition transmits each subframe and uses identical ECCE, identical with first subframe； Alt2-2：Calculated as unit hash with search space (Rmax) or radio frames, repetition transmits each subframe and uses identical ECCE, with head Subframe is identical.

Based on this, Candidate Set (detects down control channel most in search space in the search space in the present embodiment Small grain size) composition form include one of in the following manner：

Candidate Set is made up of one or more polymerization grade and various numbers of repetition, and different number of repetition Candidate Set institute Corresponding initial subframe is identical；

Candidate Set is made up of one or more polymerization grade and various numbers of repetition, and different number of repetition Candidate Set institute Corresponding initial subframe is different, and the Candidate Set corresponding to non-maximum number of repetitions has multiple in search space；

Candidate Set is made up of various polymerization grades and a kind of number of repetition；

Candidate Set is made up of a kind of polymerization grade, wherein, Candidate Set takes all control channel units in search space；

Polymerization grade corresponding to Candidate Set determines according to different application scene, wherein, scene at least includes：Inband Scape, standalone/guardband scenes.

In another optional embodiment of the present embodiment, when the search space is discrete in time domain with detect window or Scheduling window is that unit uses part or all of resource in window；Or, in search space in time domain discrete and down control channel Using part or all of resource and enter in window and/or between window in window in units of detecting window or scheduling window when repeating to transmit Row time domain is repeated.It should be noted which is first-selected being used in big covering；And when Normal is covered, first-selection is empty for search Between continuously include in time domain：Search space continuous and/or search space in units of subframe collection is continuous in units of subframe；And Used in big covering.

Wherein, in detection window or scheduling window, down control channel and downlink traffic channel time division multiplex, or descending control The resource time division multiplex that the different cover types of channel are used.

And when repeating to transmit, subframe collection of the search space in detection window is not repeated or number of repetition can be pre-configured with. Wherein, the parameter determination that the search space passes through at least one of：Initial subframe, subframe collection, number of repetition, scheduling window or inspection Survey number of repetition, detection cycle, sub-band or sub-carrier positions in window, wherein it is determined that the parameter of search space for predefined or The configuration of fixed or base station.In the optional embodiment of the present embodiment, now search space can only have 1 detection window, subframe Or subframe collection is repeated in window defined, number of repetition represents the number of repetition of repetition window, is to repeat window when repeating to transmit Unit repeats transmission R times, and repetition transmission is being detected in window for R times.Repeat window length and be more than subframe collection length, but less than inspection Survey window length.

In the present embodiment, terminal detects that the determination mode of initial control channel unit includes in search space：It is fixed Base station configuration or according to hash functions between subframe or radio frames or detection window or search space iteration, wherein, repeating to pass When defeated, each subframe/subframe for repeating transmission is concentrated use in identical control channel unit, and the mode of base station configuration includes：With The proprietary RRC configuration startings+offset of family equipment UE, all UE startings are identical.In the optional embodiment of the present embodiment, it is necessary to Control channel unit direct index in the initial control channel unit index of configuration, such as configuration search space, or configuration search space Middle control channel unit starting index and biasing.

Based on this, the composition form of Candidate Set includes one of in the following manner in the search space：

Candidate Set is made up of various polymerization grades and a kind of number of repetition.

Polymerization grade corresponding to Candidate Set determines according to different application scene, wherein, scene at least includes：Inband Scape, standalone/guardband scenes, the corresponding Candidate Set quantity summation of each scene are consistent.Wherein, the Candidate Set number Amount according to different scenes determine, it is determined that mode include：The corresponding Candidate Set quantity summation of different scenes is identical, different scenes pair The Candidate Set quantity answered is independently determined；

Wherein, the number of repetition being related in the present embodiment determines by number of repetition between window, or simultaneously by being repeated in window time Number of repetition determines between number and window.

It should be noted that the search space being related in the present embodiment is with different type, different messages or different use Family/user's group carries out time division multiplex.Additionally, when search space is unit by portion subcarriers on frequency domain, frequency division multiplexing mode Including at least one of：FDM between frequency division multiplex FDM, different types of channels, different cover types between same type channel Between FDM between FDM, different messages type, in units of strengthening control channel unit ECCE be multiplexed different types of channels.Its In, the mode of down control channel scheduling indicating downlink Traffic Channel includes at least one of in frequency division multiplexing：

Indicate follow-up occupancy subframe position in same sub-band or sub-carrier positions；

Indicate to take subframe position in different sub-bands across sub-band or subcarrier；

Indicate subsequently to take subframe position and across sub-band or subcarrier in same sub-band or sub-carrier positions simultaneously Indicate to take subframe position in different sub-bands.

Alternatively, in down control channel dispatching downlink Traffic Channel, the initial subframe of downlink traffic channel with it is descending Control channel terminates interval between subframe in units of subframe or scheduling window, wherein, the initial subframe of downlink traffic channel with The value that down control channel terminates to be spaced between subframe is fixed value or variable value；Wherein, the span of the variable value Determined according at least one of following parameter：Detection cycle, scheduling window, cover type, Physical Uplink Shared Channel PUSCH lattice Formula.

It should be noted that when the variable value is notified by DCI, limited value set, the unit in the set during span Element determines according at least one detection cycle, scheduling window, cover grade, PUSCH form single tone.Including being no more than Detection cycle, the size of scheduling window determine the value range of convergence of k, such as when detection cycle is M, value k is not more than M, to cover When lid type determines span, the respective variable value value set of different cover type correspondences, such as cover type x3 correspondences k takes Value set { k0, k1, k2, k3, k4, k5, k6, k7 }, cover type x2 correspondence k values set value set corresponding with x3 has common factor When as { k4, k5, k6, k7, k8, k9, k10, k11 } or with its without occur simultaneously when corresponding value set as k8, k9, k10, k11, k12、k13、k14、k15}；Similarly it is applied to the respective variable value value set of correspondence of different PUSCH forms.PUSCH forms are such as As described before.

In addition, down control channel terminates subframe for subframe n, the initial subframe of downlink traffic channel is n+k, when with subframe During as scheduling interval, i.e., k subframe, k is fixed value or the variable value that signals, k value set be preferably greater than 0 it is whole Number.When to dispatch window as interval, down control channel terminates subframe for subframe n, and place scheduling window is m, downlink traffic channel Initial subframe be n+k, place scheduling window is m+u, and wherein u is the integer more than or equal to 0, and u is fixed value or signals Variable value.Signaling is physical layer signaling DCI or high-level signaling SIB or RRC.

Based on aforesaid way, when definition relation is determined in units of window to dispatch, scheduling window is long at different sub-carrier interval Uplink single-carrier single tone transmission channels when it is identical or be independently determined；Wherein, uplink authorization UL grant indicate up Initial subframe position of the Traffic Channel in window.

Additionally, the uplink authorization UL grant indicate the uplink single-carrier transmission of different sub-carrier gap size.Example Such as two kinds of uplink single-carriers of different sub-carrier gap size are indicated to transmit using 1bit, such as 3.75kHz and 15kHz, or 2.5kHz and 15kHz.

Additionally, the uplink authorization UL grant are transmitted using identical to the uplink single-carrier of different sub-carrier gap size Resource distribution instruction bit field；Supplemented in specification, for the uplink single-carrier transmission of different sub-carrier gap size, resource Distributing bit domain size is identical.Long interior in certain scheduling window, the uplink single-carrier to smaller subcarrier spacing is transmitted according to frequency The minimum basic allocation unit of serial number 0-X on domain, usesBit indicates one of them.Equally certain Scheduling window it is long in, to the transmission of the uplink single-carrier of larger subcarrier spacing according to frequency domain after time domain after first frequency domain or first time domain The minimum basic allocation unit of serial number 0-X, usesBit indicates one of them.

Based on foregoing description, in the concrete application scene of the present embodiment, down control channel terminates subframe for subframe n, The initial subframe of reverse link traffic channel is n+k, and when using subframe as scheduling interval, i.e., k subframe, k is fixed value or signaling The variable value of notice, k value set is preferably greater than 0 integer.When to dispatch window as interval, down control channel terminates son Frame is subframe n, and place scheduling window is m, and the initial subframe of reverse link traffic channel is n+k, and place scheduling window is m+u, and wherein u is big In the integer equal to 0, u is fixed value or the variable value for signaling.Signaling be physical layer signaling DCI or high-level signaling SIB or RRC.Wherein, it is fixed value preferably to dispatch u values when window mode defines scheduling interval.

Scheduling window N long (represent N number of subframe or N number of TTI or N milliseconds), N values be preferably set 1,2,4,8,10,16, 20th, element or its integral multiple in 30,32,40,48 }.Scheduling window N values long are that fixed value or base station are matched somebody with somebody by SIB or RRC Put.

For the scheduling window uplink single-carrier transmission channel phase being spaced in different sub-carrier long simultaneously, for example up single load Ripple has 15Khz and two kinds of 3.75kHz, and both dispatch window N long using identical.Now dispatch less subcarrier spacing During PUSCH, PUSCH startings subframe is the initial subframe for dispatching window, when dispatching the PUSCH of larger subcarrier spacing, PUSCH startings Subframe be dispatch window initial subframe or scheduling window in portion as initial subframe, such as { 0,1/4,2/4,3/4 } × N, It is preferred that indicating the initial subframe position in scheduling window of the PUSCH by 2bit in UL grant.

When being independently determined for the scheduling window uplink single-carrier transmission channel being spaced in different sub-carrier long, for different sons The corresponding scheduling window of the uplink single-carrier transmission at carrier wave interval is long independently to be determined, for example, take different fixed values, or Base station notifies scheduling window length value by independent configuration signal respectively.Up single at this point for different sub-carrier interval carries Ripple transmission PUSCH initial subframe determination mode be, the initial subframe of preferably each self scheduling window.Can also further pass through Initial subframe position in specific indicating window in ULgrant.

It is visible by the present embodiment, realize and how to determine search space in narrowband systems, reached by time division transmission The effect of blocking rate reduction between the down control channel corresponding to different messages types, different cover types, save need not The wasting of resources wanted, improves resource utilization.

Through the above description of the embodiments, those skilled in the art can be understood that according to above-mentioned implementation The method of example can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but a lot In the case of the former be more preferably implementation method.Based on such understanding, technical scheme is substantially in other words to existing The part that technology contributes can be embodied in the form of software product, and computer software product storage is in a storage In medium (such as ROM/RAM, magnetic disc, CD), including some instructions are used to so that a station terminal equipment (can be mobile phone, calculate Machine, server, or network equipment etc.) perform method described in each embodiment of the invention.

A kind of determining device of search space in narrowband systems is additionally provided in the present embodiment, and the device is used to realize Embodiment and preferred embodiment are stated, repeating no more for explanation had been carried out.As used below, term " module " can be with Realize the combination of the software and/or hardware of predetermined function.Although the device described by following examples preferably comes real with software It is existing, but hardware, or the realization of the combination of software and hardware is also that may and be contemplated.

Fig. 2 is the structured flowchart of the determining device of search space in narrowband systems according to embodiments of the present invention, such as Fig. 2 institutes Show, the device includes：Identification module 22, for recognizing arrowband down control channel；Detection module 24, couples with identification module 22 Connection, the search space where for detecting arrowband down control channel, terminal it is determined that arrowband search space in detect narrow Band down control channel, wherein, in time domain in units of R subframe or subframe collection, search space is on frequency domain for search space In units of M subcarrier in whole arrowband or arrowband, wherein R, M value collection are combined into positive integer, and subframe concentrates the X son for including Frame, X values are fixed or base station is configurable.

Alternatively, the search space in the present embodiment is continuous or discrete in time domain, wherein, the covering that search space is supported Type includes that every kind of cover type corresponds to unique R values or a set for including multiple R values one or more, and R is represented down The number of repetition of row control channel.Wherein, the search space continuously includes in time domain：Search space is connected in units of subframe collection Continuous and/or search space is continuous in units of subframe.

In the optional embodiment of the present embodiment, the search space is determined by least one of following parameter：Starting Subframe, subframe collection size, number of repetition or sub-frame number, detection cycle, sub-band or sub-carrier positions, wherein it is determined that search The parameter in space is predefined or fixed or base station configuration.

Wherein, initial subframe determines according at least one of following parameter：Maximum number of repetitions Rmax, deviant Offset, radio frame number SFN, cycle M；Wherein it is determined that mode include at least one of：Initial subframe number is index Index k, and meet the subframe of (10*SFN+k) mod Rmax=0；Initial subframe number is index k, and meets (10*SFN + k) mod N*Rmax=0 subframe, N is the positive integer more than 0；Initial subframe number is index k, and meets (10*SFN+ K) subframe of mod M=0, M is the positive integer more than or equal to Rmax；Initial subframe number is index k, and meets (10*SFN+ K+offset) the subframe of mod M=0, M is the positive integer more than or equal to Rmax；Initial subframe number is index k, and is met The subframe of (10*SFN+k+X*offset) mod M=0, M is the positive integer more than or equal to Rmax, and X is the positive integer more than 0.

For the above-mentioned initial subframe corresponding cycle being related to value set according to cover type determine, initial subframe The value in corresponding cycle is configured or fixed by base station；And/or, the value set of deviant offset or value are according to covering class Type and/or cycle determine；Or, the value of deviant offset is configured by base station or is fixed or determined according to the cycle.

And, carry the value in the initial subframe corresponding cycle of search space where the down control channel of UL grant Set determines according at least one of：Cover type, reverse link traffic channel PUSCH forms, carry the descending control of UL grant The value in the initial subframe corresponding cycle of search space where channel processed is configured or fixed by base station；And/or, deviant The value set of offset or value determine according at least one of：Cover type, cycle, reverse link traffic channel PUSCH lattice Formula；Or, the value of deviant offset is configured by base station or fixed or implied according to the cycle determining.Wherein, in big cover type When, cycle M and/or deviant offset is more than value during small cover type.

In addition, configured by fixed or base station for the subframe collection size in the present embodiment determine, alternatively, in time domain Consecutive hours, initial subframe is the first subframe of subframe collection.

It should be noted that in search space in time domain consecutive hours, repeatedly transmit polymerization in the subframe that uses and subframe Grade AL includes one of in the following manner：When in the absence of subframe collection, in a sub- frame in AL=1,2,4 since initial subframe At least one of repeat transmit R subframe；When there is subframe collection, since initial subframe subframe concentrate with AL=1,2, 4th, 8,16, at least one of 32 repeat to transmit R subframe collection；Wherein, transmission R subframe or son are repeated since initial subframe During frame collection, the subframe for being used is available subframe.

In another optional embodiment of the present embodiment, the search space at least includes：Uplink authorization UL grant Upload control search space and downstream grants DL grant descending command deployment space, wherein, upload control search space The resource used with descending command deployment space is the resource of entirely different resource or respective separate configurations.

Additionally, for the composition form of Candidate Set in the search space that is related in the present embodiment include in the following manner it One：Candidate Set is made up of one or more polymerization grade and various numbers of repetition, and corresponding to the Candidate Set of different numbers of repetition Initial subframe it is identical；Candidate Set is made up of one or more polymerization grade and various numbers of repetition, and different numbers of repetition Initial subframe corresponding to Candidate Set is different, and the Candidate Set corresponding to non-maximum number of repetitions has multiple in search space；Wait Selected works are made up of various polymerization grades and a kind of number of repetition；Candidate Set is made up of a kind of polymerization grade, wherein, Candidate Set takes The all control channel units in search space；Polymerization grade corresponding to Candidate Set determines according to different application scene, wherein, application Scene at least includes：With interior Inband scenes, independent service band standalone, protection band guardband scenes.

And when search space is discrete in time domain, using part or all of in window in units of detecting window or scheduling window Resource；Or, when discrete and down control channel repeats to transmit in time domain for search space, in units of detecting window or scheduling window Using part or all of resource and carried out in window and/or time domain is repeated between window in window.

Wherein, in detection window or scheduling window, down control channel and downlink traffic channel time division multiplex, or descending control The resource time division multiplex that the different cover types of channel are used.And when repeating to transmit, son of the search space in detection window Frame collection is not repeated or number of repetition can be pre-configured with.The search space is determined by least one following parameter：Initial subframe, son Frame collection, number of repetition, scheduling window or number of repetition, repetition window long, detection cycle, sub-band or sub-carrier positions in detection window, Wherein it is determined that the mode of search space is predefined or fixed or base station configuration.

Based on this, terminal detects that the mode of initial control channel unit includes in search space：The configuration of fixed or base station Or according to hash functions are in subframe or subframe collection or radio frames or detect iteration between window or search space, wherein, repeating to pass When defeated, each subframe/subframe for repeating transmission is concentrated use in identical control channel unit, and the mode of base station configuration includes：With Family equipment UE proprietary radio resource control RRC configuration starting index and/or deviant offset, all UE startings are identical.

In addition, the composition form of Candidate Set includes one of in the following manner in the search space：Candidate Set is by one or more Polymerization grade and various numbers of repetition are constituted, and initial subframe corresponding to the Candidate Set of different numbers of repetition is identical；Candidate Set It is made up of one or more polymerization grade and various numbers of repetition, and the initial subframe corresponding to the Candidate Set of different numbers of repetition Difference, the Candidate Set corresponding to non-maximum number of repetitions has multiple in search space；Candidate Set is by various polymerization grades and one Plant number of repetition composition；Candidate Set is made up of a kind of polymerization grade, wherein, Candidate Set takes all control channel lists in search space Unit；Polymerization grade corresponding to Candidate Set determines according to different application scene, wherein, application scenarios at least include：In band Inband scenes, independent service band standalone, protection band guardband scenes；Wherein, number of repetition is repeated by between window Number of times determines, or by window, number of repetition determines between number of repetition and window simultaneously.

In another optional embodiment of the present embodiment, search space is with different type, different messages or different use Family/user's group carries out time division multiplex.And the search space on frequency domain by portion subcarriers be unit when, frequency division multiplexing mode Including at least one of：FDM, difference cover class between frequency division multiplex FDM, different types of channels between same type channel FDM between FDM, different messages type between type, in units of strengthening control channel unit ECCE it is multiplexed different types of channels.

Wherein, in frequency division multiplexing down control channel scheduling indicating downlink Traffic Channel mode include it is following at least it One：Indicate follow-up occupancy subframe position in same sub-band or sub-carrier positions；Different son frequencies are indicated across sub-band or subcarrier Subframe position is taken in band；Indicate subsequently to take subframe position and across sub-band in same sub-band or sub-carrier positions simultaneously Or subcarrier indicates to take subframe position in different sub-bands.

And in down control channel dispatching downlink Traffic Channel, the initial subframe of downlink traffic channel and descending control are believed Road terminates interval between subframe in units of subframe or scheduling window, wherein, initial subframe and the descending control of downlink traffic channel The value that channel processed terminates to be spaced between subframe is fixed value or variable value；Wherein, the span of variable value is according to following ginseng At least one of number determines：Detection cycle, scheduling window, cover type, Physical Uplink Shared Channel PUSCH forms.

Carry uplink authorization UL grant down control channel schedule upstream traffic channels when, reverse link traffic channel rise Beginning subframe and down control channel terminate interval between subframe in units of subframe or scheduling window, wherein, reverse link traffic channel Initial subframe and the down control channel value that terminates to be spaced between subframe be fixed value or variable value.Wherein, with scheduling Window for unit determine definition relation when, scheduling window it is long different sub-carrier interval uplink single-carrier single tone transmit letter It is identical or be independently determined during road.And uplink authorization UL grant indicate initial subframe position of the reverse link traffic channel in window； Uplink authorization UL grant indicate the uplink single-carrier transmission of different sub-carrier gap size；Uplink authorization UL grant are to difference The uplink single-carrier transmission of subcarrier spacing size uses identical resource distribution instruction bit field.

It should be noted that above-mentioned modules can be by software or hardware to realize, for the latter, Ke Yitong Cross in the following manner realization, but not limited to this：Above-mentioned module is respectively positioned in same processor；Or, above-mentioned module is located at many respectively In individual processor.

The present invention is illustrated below in conjunction with alternative embodiment of the invention；

Search space determines method during this alternative embodiment provides a kind of narrowband systems, and the technical scheme of the method is used ：Terminal detection arrowband down control channel where search space in time domain in units of a subframe or subframe collection, On frequency domain in units of portion subcarriers in whole arrowband or arrowband.

It should be noted that the search space in this alternative embodiment refers to various application scenarios, for example with interior inband, Protection band guardband, independent service band standalone；And various cover types, such as normal, medium, The basic composition of extreme, or composition elementary cell, the arrowband being related in this alternative embodiment be 200kHz or 180kHz, the Physical Resource Block PRB defined using LTE when being coexisted with LTE, correspondence 180kHz, arrowband are 1 PRB, wherein, Number of sub carrier wave has 12.When coexisting or work independently with LTE in time domain, subframe includes 14 using the subframe that LTE is defined OFDM symbol and in time continue 1ms, subframe collection be fixed or predefined or base station configuration several subframes, subframe concentration Comprising subframe be continuous subframe or discrete subframe or continuous or discrete in certain dispatching cycle or detection cycle Several subframes, sub-frame number can selected value for set { 1,2,4,6,8,10,16,20 } or its subset.Base station configuration includes The mode of cell-specific types or UE-specific types is configured to using SIB or RRC.

In addition, it is continuous or discrete in time domain using search space when repeating to transmit in coverage enhancement demand, wherein, this covers Lid enhancing includes one or more cover type.Every kind of cover type correspondence unique R values or a R value set.

Alternatively, can only support that a kind of cover type, or all cover types are all supported in the search space, pass through Different number of repetition R are configured to be supported；Wherein, every kind of cover type can only support unique R values, or support that a R takes Value set.R corresponding to different cover types gather when there is value set in element is separate or mutual is overlapped.

For example, when every kind of cover type uniquely supports a R value, normal covering correspondence R1, medium covering correspondences R2, extreme covering correspondence R3；When every kind of cover type supports a R value set, when each value set is separate, As normal coverings are corresponding { R1, R2, R3, R4 }, medium coverings correspondence { R5, R6, R7, R8 }, extreme covering correspondence R9, R10、R11、R12}；When each value set mutual is overlapped, such as normal coverings correspondence { R1, R2, R3, R4 }, medium coverings are right Answer { R3, R4, R5, R6 }, extreme coverings correspondence { R5, R6, R7, R8 }.

The mode for continuously transmitting search space of this alternative embodiment will be illustrated below；

In search space in time domain consecutive hours, be divided into and there is subframe collection and in the absence of subframe collection, i.e., be single with subframe collection Position it is continuous and in units of subframe it is continuous.Fig. 3 be according to the search space of alternative embodiment of the present invention in time domain consecutive hours Schematic diagram, as shown in figure 3, search space is continuous in time domain.

In this alternative embodiment, the search space can be by initial subframe, number of repetition or sub-frame number, detection week At least one phase, sub-band or sub-carrier positions are determined, and the mode of the determination can be predefined, fix or base station Configuration.

Wherein, base station configuration can be that SIB or RRC are configured, for example, configuration parameter includes：

Initial subframe：(1) (such as first subframe in the cycle) is determined by the cycle；(2) or cycle+offset determine；

Length：I.e. (regardless of whether there is subframe collection, number of repetition is the weight in units of subframe or subframe collection to number of repetition Again count) or sub-frame number (number of repetition is equal to sub-frame number when in the absence of subframe collection), when search space there are multiple R When the value be defined by the maximum Rmax of R, the subframe that the repetition is used can be physical sub-frame or can use subframe；

Cycle：The parameter is needed more than Rmax.It is preferred that the integral multiple of Rmax, or integral multiple+offset；

Sub-band or sub-carrier positions：It is only applicable to the feelings that search space does not extend around 1PRB or whole arrowbands on frequency domain Condition, also needs to configure subcarrier in frequency domain resource during configuration sub-frame resources, for example, configure { number of sub frames S, sub-carrier number C }；Such as：{8 Subframe, 3 subcarrier }, { 16 subframe, 3 subcarrier }, { 32 subframe, 3 subcarrier }； { 4 subframe, 6 subcarrier }, { 8 subframe, 6 subcarrier }, { 16 subframe, 6 Subcarrier } etc..

Additionally, in continuation mode, repeatedly transmitting polymerization grade in the subframe and subframe for using includes one of in the following manner：

Mode 1：In no subframe collection, in a sub- frame in the weight of AL=1,2, at least one 4 since initial subframe R subframe is transmitted again；

Mode 2：When there is subframe collection, since initial subframe subframe concentrate with AL=1,2,4,8,16,32 at least it One repeats to transmit R subframe collection；

Wherein, the use of subframe is available subframe when transmission R subframe or subframe collection is repeated initial subframe.

For aforesaid way 1：When continuously transmitting, and there is no subframe set, then at one since initial subframe In subframe R subframe of transmission is repeated with AL=1,2,4.Further, in continuation mode, subframe is concentrated when there is subframe collection Subframe is for continuous physical sub-frame in time domain or can use subframe.Transmission R times is repeated when repeating to transmit in units of subframe collection.Do not deposit In subframe collection, repeated R times in units of subframe when repeating to transmit, i.e., R physical sub-frame or subframe can be used.Polymerization grade is in nothing Aggregation level set during subframe collection using the maximum polymerization grade that be can be supported in subframe or no more than maximum polymerization grade and Element is one or more in set.

And for mode 2：When there is subframe set=X subframes, such as X=2,4,8, then since initial subframe Repeat to transmit R × X subframe with AL=1,2,4,8,16,32 in X sub- frame in.Now subframe is continuous physics in subframe collection Subframe can use subframe.Mode 3, repeating transmission use can use subframe, i.e., discontinuous to take physical sub-frame.Vacant physical sub-frame portion Divide or be completely used as down control channel of transmission UL grant etc..Now need to carry out to signal UE and coordinated, including Two ways：Mode 3-1：Base station configures cell-specific upload control sub-frame sets.Mode 3-2：Base station configuration UE- The sub-frame set resource that the descending controls of specific are used with business, is reconfigured at a UE-specific upload control subframe Set.

Alternatively, terminal detects that the determination mode of initial control channel unit includes that base station configures or root in search space According to hash functions are in subframe or radio frames or detect iteration between window or search space.When repeating to transmit, it is each that repetition is transmitted Individual subframe/subframe is concentrated use in identical control channel unit.

For example, during without subframe set, Alt1：AL=4ECCE, initial subframe determines original position, 4ECCE in subframe All use, initial always ECCE index 0；Alt2-1：AL=1,2,4ECCE, initial ECCE are fixed as the integer of polymerization grade Times position or by configuring determination, repetition transmits each subframe and uses identical ECCE, identical with first subframe；Alt2-2：To search for sky Between (Rmax) or radio frames be that unit hash is calculated, repetition transmits each subframe and uses identical ECCE, identical with first subframe.

When having subframe set, Alt1-1：Initial ECCE is fixed as the integral multiple position of polymerization grade or by configuring It is determined that, repetition transmits each subframe and uses identical ECCE, identical with first subframe.Alt1-2：With search space (Rmax) or radio frames For unit hash is calculated.Repetition transmits each subframe and uses identical ECCE, identical with first subframe.

Candidate Set only has one, takes all control channel units in search space.There was only a kind of one time of polymerization grade Selected works (comprising frequency domain and time domain granularity summation).

Polymerization grade corresponding to Candidate Set determines according to different application scene.Such as Inband scenes and standalone/ Guardband scenes support different polymerization grades, and each correspondence Candidate Set quantity summation is consistent.

To be illustrated in the way of discrete (piecemeal) transmission search space below；

The search space is discrete in time domain, and time domain repetition is carried out in units of detecting window or scheduling window, and Fig. 4 is according to this The schematic diagram when search space of invention alternative embodiment is discrete in time domain, as shown in figure 4, search space in time domain from Dissipate.

Alternatively, in detection window or scheduling window, down control channel and downlink traffic channel time division multiplex or difference The resource time division multiplex that cover type is used.

The time-multiplexed mode includes following several ways：

Alt1. control and data TDM, different cover type TDM in control area.Fig. 5 is according to optional implementation of the invention The control of example and data time division multiplex, the time-multiplexed schematic diagram of different cover types in control area, as shown in figure 5, CE1, CE2, CE3 represent different covering grades, and different covering grades carry out being distinguished in time domain in control area.

Alt2. control and data TDM, do not differentiate between different cover types in control area, are configured by different R, and Fig. 6 is root Control and data time division multiplex according to alternative embodiment of the present invention, no longer with the different time-multiplexed signals of covering in control area Figure, as shown in fig. 6, now no longer being made a distinction in control area.

Alt3. different cover type TDM in dispatching cycle, control in same cover type and data TDM, Fig. 7 are roots According to the different covering time division multiplexes of alternative embodiment of the present invention, in same covering, time division multiplex is shown again with data separation for control area Be intended to, as shown in fig. 7, different covering TDM, preferably control and data TDM in same covering, control area data area it Before.Control area is discrete in window is dispatched under Alt4.TDM.Fig. 8 is the control and data time-division according to alternative embodiment of the present invention Multiplexing and schematic diagram when control area is discrete, it is discrete in time domain as shown in figure 8, control area is not concentrated.

Under block transmission mode, due to having distinguished scheduling window, then the specific subframe position in window is being dispatched in control area Whether front position is unimportant in concentrating on scheduling window, and specific occupancy subframe sequence number is determined by sub-frame configuration, i.e., should Mode protrudes flexibility.

Alternatively, subframe collection of the search space in detection window is not repeated or number of repetition is configurable when repeating to transmit.

Wherein, for scheduling window scene, each detects only one of which subframe in window for each UE in principle Set, at least under normal covering scenes.Further discriminate between two kinds of repetitive modes for medium/extreme coverage enhancement, (1) only Repeated between detection window, it is interior with detection window between (2) detection window to repeat.

For which 1：Do not support to repeat in detection window, only one of which subframe set=X in each detection window During subframe, then R detection window of transmission is repeated in X sub- frame in since initial subframe.Wherein, detection window starting subframe and scheduling Window starting subframe is identical, or is later than scheduling window starting subframe.

For which 2：Support to repeat in detection window, then subframe set=X subframes repeat Rin in detection window It is secondary, repeated Rout times between detection window, iterative transfer times R=Rin × Rout.Wherein, detection window starting subframe and scheduling window Initial subframe is identical, or is later than scheduling window starting subframe.Search space border is determined by Rout_max.

Alternatively, search space pass through initial subframe, subframe collection, number of repetition, scheduling window or number of repetition in detection window, At least one detection cycle, sub-band or sub-carrier positions are determined, including predefined or fixed or base station configuration.

Wherein, base station configuration includes that SIB or RRC are configured, for example：Configuration parameter includes：

Subframe collection：Configuration { 2,4,8 } in dispatching cycle；

Number of repetition in scheduling window：Default value is Rin=1, can configure 1,2,4,8, is limited and scheduling window size.

Starting scheduling window：(1) determined (first scheduling window such as in the cycle) by the cycle；Or cycle+offset is true (2) Fixed, now the base unit of offset is not that subframe is scheduling window.Wherein it is determined that initial scheduling window just can be according to subframe Set determines initial subframe.

Length：(1) Rmax, now subframe collection is not repeated (i.e. Rin=1) in window.(2) Rout_max, Rout=Rmax/ Rin, now subframe collection repeats to repeat Rout between Rin, window in window.It is further divided into physical sub-frame or two kinds of situations of subframe can be used. Wherein Rmax={ 1,2,4,8,16,32,64,128 }

Cycle：(1) Rin=1, the parameter is needed more than Rmax.It is preferred that the integral multiple of Rmax, or integral multiple+offset. (2) parameter is needed more than Rout_max, Rout=Rmax/Rin.It is preferred that the integral multiple of Rout_max, or integral multiple+ offset。

Sub-band or sub-carrier positions：It is only applicable to the feelings that search space does not extend around 1PRB or whole arrowbands on frequency domain Condition, also needs to configure subcarrier in frequency domain resource during configuration sub-frame resources, for example, configure { number of sub frames S, sub-carrier number C }.Such as：{8 Subframe, 3 subcarrier }, { 16 subframe, 3 subcarrier }, { 32 subframe, 3 subcarrier }； { 4 subframe, 6 subcarrier }, { 8 subframe, 6 subcarrier }, { 16 subframe, 6 Subcarrier } etc..

Alternatively, terminal detects that the determination mode of initial control channel unit includes in search space：Fixed or base station Configuration or according to hash functions between subframe or radio frames or detection window or search space iteration.When being transmitted in repetition, repeat Each subframe/subframe of transmission is concentrated use in identical control channel unit.Wherein configuration includes：(1) the proprietary RRC of UE, configuration Starting+offset, (2) all UE startings are identical.

Wherein Alt1：Initial ECCE is by search space (including one or more dispatching cycles) or in units of dispatching cycle Hash is calculated.Ensure to repeat to transmit each subframe collection (2,4,8) simultaneously using identical ECCE, it is identical with first subframe collection.

For example：

Calculating subframe number k by time-gap number needs revision, and still based on time-gap number in LTE system, then k is calculated needs It is changed to：

(1) formula rewriting is carried out containing X subframe according to 1 dispatching cycle (M-subframe).Meet continuous ten Hash iteration in individual dispatching cycle.

(2) again according to dispatching cycle (M-subframe) number definition k, k=0,1,2 ... 9 in 1 M-frame.

Alt2：It is fixed as the integral multiple position of polymerization grade or by configuring determination, Candidate Set starting (E) CCE positions are consolidated It is set to the L integral multiple position of (E) CCE.(1) the proprietary RRC of UE, configure starting+offset, (2) cell-specific configurations institute There are UE startings identical.

Alt3：Extreme covering repeat transmit when be special case when Normal cover, from take subframe collection gather Close grade, the initial ECCE index 0 that always subframe is concentrated.

Based on foregoing description, in the search space in this alternative embodiment the composition form of Candidate Set include in the following manner it One：

Candidate Set only has one, takes all control channel units in search space, i.e., only a kind of one time of polymerization grade Selected works (comprising frequency domain and time domain granularity summation)；

Polymerization grade corresponding to Candidate Set determines according to different application scene.Such as Inband scenes and standalone/ Guardband scenes support different polymerization grades, and each correspondence Candidate Set quantity summation is consistent；

Wherein, number of repetition can only fenestrate number of repetition determine, or simultaneously by weight between number of repetition and window in window Again number determines.

The content of CSS and USS will be described below

Wherein, search space further can carry out the time-division with different type, different messages, different user/user's group.

Alternatively, CSS and USS time-divisions, the CSS time-divisions corresponding to CSS and Paging, different user corresponding to RAR or The different user groups time-division.Base station configures above-mentioned each search space by SIB or RRC.It is configured to CSS and is overlapped with USS then may be used To overlap, configuration CSS and the USS time-divisions then reduces blind check complexity, search space in itself determination mode (initial subframe, the cycle, Subframe collection, polymerization grade) both types are had no with essential distinction, the simply difference in parameter.Such as the corresponding polymerization grades of CSS Polymerization grade corresponding less than USS.For example：USS/SS carries out time division multiplex to different UE/UE group, it is proposed that CSS is to difference Type of message carries out time division multiplex.The available subframe collection or physics used when distinguishing cover type or not differentiating between cover type Subframe is concentrated：Alt1：For USS/SS, time division multiplex difference UE/UE group/all UE, Fig. 9 are according to embodiments of the present invention Search space the schematic diagram of time-division is carried out with different type, different messages, different user/user's group, as shown in figure 9, different The gray scale depth represents different UE/UE group；Alt2：For CSS, time division multiplex different messages type, as shown in figure 9, different The gray scale depth represents different publicly-owned type of messages；Alt3：For different search space types, time division multiplex USS and CSS, wherein Most dark gray is CSS, and remaining two kinds of gray scale is USS.

Below by additionally supplementing being described in detail for content during FDM；

Alternatively, down control channel can be with FDM while time division multiplex with downlink traffic channel.Specifically include with It is at least one lower：FDM, different messages class between FDM between FDM, different types of channels, different cover types between same type channel FDM between type.

Wherein, it is contemplated that it is descending support list carrier-wave transmission have little significance, it is proposed that it is descending do not segment to list carrier wave Granularity.In view of 1PRB=4ECCE, it is proposed that carry out FDM with 3 subcarrier granularities, now { 1 subframe, 3 subcarriers } after FDM The corresponding resource size of granularity is suitable with 1 ECCE resource size.Consider to be encoded for the ease of SFBC, preferably 2 or 4 subcarriers Granularity carries out FDM.

Alternatively, down control channel scheduling indicating downlink Traffic Channel mode includes at least one in the following manner：

Wherein, follow-up occupancy subframe position in same sub-band or sub-carrier positions is only indicated.I.e. only cross-subframe instruction phase With sub-band or sub-carrier positions.Now, FDM between different cover types, resource is separate, now in same sub-band Indicate.Wherein cross-subframe scheduling interval k can be fixed value, and such as k=1 is next subframe or next dispatching cycle, Figure 10 Down control channel refers to downlink traffic channel in resource when being the downlink resource frequency division multiplexing according to alternative embodiment of the present invention Show and only indicate the follow-up schematic diagram for taking subframe position in same sub-band or sub-carrier positions, as shown in Figure 10, Huo Zhewei Variable value, k is notified in Downlink Control Information.Subsequently taking subframe position can be determined by number of repetition R, or by accounting for substantially Determined with unit and number of repetition R.It is basic take unit be information source it is encoded be modulated at it is unduplicated in the case of the son that takes Number of frames.

It is only cross-subframe to indicate same sub-band or sub-carrier positions for which.For example：Now NB-PDCCH scheduling NB-PDSCH uses cross-subframe scheduling.Cross-subframe scheduling interval is fixed or dynamic instruction, takes sub-frame number in DCI middle fingers Show.

Only indicate to take subframe position in different sub-bands across sub-band or subcarrier.It is i.e. cross-subframe and/or across sub-band or Subcarrier is indicated.It is descending in now excellent different sub-bands to select control channel identical with Traffic Channel starting subframe, indicate subframe to account for With quantity or end subframe position, i.e. submode 1, with subframe difference dispatching sub-frequency band.Or business in preferably different sub-bands Channel starting subframe is not entirely identical with down control channel starting subframe.

Indicate subsequently to take subframe position and across sub-band or subcarrier in same sub-band or sub-carrier positions simultaneously Indicate to take subframe position, i.e. submode 2 in different sub-bands, subsequent subframe same sub-band and same/different subframes are different sub Frequency band scheduling.Including a kind of special case, i.e. the subsequent subframe same sub-band of submode 3 dispatching sub-frequency band different with same subframe.

Wherein, for cross-subframe and/or indicate across sub-band or subcarrier.Then in the presence of NB-PDCCH scheduling NB-PDSCH Frequency bidimensional is dispatched, it is contemplated that feedback timing is alignd, and the NB-PDSCH finish times of different C subcarriers should keep identical.

Submode 1：With subframe difference dispatching sub-frequency band.Only support same subframe scheduling mode 1.I.e. different C subcarriers, NB- PDSCH is identical with NB-PDCCH startings subframe, and Figure 11 is descending when being according to alternative embodiment downlink resource frequency division multiplexing of the present invention Control channel downlink traffic channel is taken in the different sub-bands of only across sub-band instructions in resource instruction subframe position and Beginning subframe identical schematic diagram, as shown in figure 11, it is necessary to indicate PDSCH to take sub-frame number in DCI.Suitable for NB-PDCCH with The complete FDM of NB-PDSCH.

Submode 2：Subsequent subframe same sub-band and same/different subframe difference dispatching sub-frequency bands.Support same subframe scheduling Mode 3.I.e. different C subcarriers, NB-PDSCH is different from NB-PDCCH startings subframe, and identical C subcarriers, NB-PDSCH evenings In NB-PDCCH transmission.NB-PDSCH takes sub-frame number in now needing to indicate different C subcarriers.Figure 12 is according to the present invention Down control channel indicates phase simultaneously to downlink traffic channel in resource instruction during alternative embodiment downlink resource frequency division multiplexing Indicate to be accounted in different sub-bands with follow-up occupancy subframe position in sub-band or sub-carrier positions and across sub-band or subcarrier With the schematic diagram of subframe position, as shown in figure 12, for example：(1) { sub-carrier positions x, initial subframe y, occupancy sub-frame number are indicated r}.(2) the cross-subframe scheduling interval k of different C subcarriers is indicated, based on the offset of NB-PDCCH starting subframe positions, while Indicate to terminate subframe.

Submode 3：Subsequent subframe same sub-band dispatching sub-frequency band different with same subframe.Support with subframe scheduling mode 2. I.e. different C subcarriers, NB-PDSCH is identical with NB-PDCCH startings subframe, and identical C subcarriers, and NB-PDSCH is later than NB- PDCCH is transmitted.NB-PDSCH takes sub-frame number in now needing to indicate different C subcarriers.Figure 13 is optional according to the present invention Down control channel indicates downlink traffic channel identical simultaneously in resource instruction during the downlink resource frequency division multiplexing of embodiment It is follow-up in sub-band or sub-carrier positions to take subframe position and taken in sub-band or subcarrier indicate different sub-bands Subframe position and different sub-band starting subframe identical schematic diagrames, as shown in figure 13, for example：(1) cross-subframe scheduling interval is consolidated It is fixed/to indicate, and indicate different C subcarriers identicals to terminate subframe；(2) cross-subframe scheduling interval is fixed/indicated, and indicates different C The sub-frame number of subcarrier, the sub-frame number of identical C subcarriers can imply and calculate (R_pdsch-R_pdcch-k).(3) Cross-subframe scheduling interval is fixed/indicated, and indicates the sub-frame number of identical C subcarriers, and the sub-frame number of different C subcarriers can be with hidden Containing calculating (R_pdsch+R_pdcch+k).

Below in conjunction with specific embodiment, the present invention will be described in detail；

Embodiment 1

This alternative embodiment continuously takes subframe or subframe mode set for search space.

Now, the Candidate Set of different numbers of repetition correspondence starting subframe in time domain is identical in search space.Now base station Side configuration repetition set { R1, R2, R3, R4 } or only configuration R4 remaining obtain according to factor k multiplications, such as k=1/2,1/4,1/8 Deng.Polymerization grade can be fixed, or determine different aggregation level sets according to different cover types.For example, now base station leads to The USS starting subframes for crossing RRC configurating terminals are located at first subframe of cycle C=640ms, and positioned at 10*SFN+subframe The subframe position of index mod 640=0.Now cover type is medium cover type, configures Rmax=R4=32, is now led to Cross factor k=1/2,1/4,1/8 and determine that remaining R3~R1 is respectively 16,8,4.Now corresponding polymerization grade AL=1,2,4, 8MCCE。

Gathered using different AL during different covering grades, the R determined using different Rmax is gathered, starting of different R Frame is identical, and total Candidate Set quantity is not more than Legacy LTE single sub-frame blind Detecting number of times.

When wherein search space is determined with continuously taking subframe pattern, search space and Candidate Set as shown in table 1-1, wherein The continuous subframe that takes is physical sub-frame or can use subframe.

Table 1-1

Wherein, when search space is determined with continuously taking subframe mode set, search space and Candidate Set as shown in table 1-2, It is wherein continuous to take subframe and subframe concentration subframe all for physical sub-frame or subframe be used.Now base station also needs to configure subframe The number of subframes and subframe collection time-domain position of collection, preferably subframe collection time-domain position continuously take phase since initial subframe in the cycle Answer the subframe of number.

Table 1-2

By using the present embodiment method, search for empty by configuring the continuous arrowband control channel for taking subframe or subframe collection Between, it is possible to achieve time division multiplex between down control channel and downlink traffic channel, and realized and LTE within the cycle of configuration The blind Detecting of identical complexity in system single sub-frame.

Embodiment 2

Now the Candidate Set of different numbers of repetition correspondence starting subframe in time domain is not all the same in search space, non-maximum There are multiple starting subframes in search space in the Candidate Set corresponding to number of repetition.Now base station side configuration repetition set R1, R2, R3, R4 } or remaining is obtained according to factor k multiplications only to configure R4, such as k=1/2,1/4,1/8.Polymerization grade can be consolidated It is fixed, or determine different aggregation level sets according to different cover types.For example, the USS that now base station passes through RRC configurating terminals Initial subframe is located at first subframe of cycle C=640ms, and positioned at 10*SFN+subframe index mod 640=0's Subframe position.Now cover type be medium cover type, configure Rmax=R4=32, now by factor k=1/2,1/4, 1/8 determines that remaining R3~R1 is respectively 16,8,4.Now polymerization grade is from the maximum polymerization grade supported in subframe.

When wherein search space is determined with continuously taking subframe pattern, search space and Candidate Set as shown in table 2-1, wherein The continuous subframe that takes is physical sub-frame or can use subframe.Now polymerization grade is from the maximum polymerization grade supported in 1 subframe AL=4ECCE.

Table 2-1

When wherein search space is determined with continuously taking subframe mode set, search space and Candidate Set as shown in table 2-2, its In continuous take subframe and subframe concentrates subframe all for physical sub-frame or can use subframe.Now base station also needs to configure subframe collection Number of subframes and subframe collection time-domain position, preferably subframe collection time-domain position since initial subframe in the cycle it is continuous take it is corresponding The subframe of number.Now polymerization grade concentrates the maximum polymerization grade supported from subframe.

Table 2-2

By using the present embodiment method, search for empty by configuring the continuous arrowband control channel for taking subframe or subframe collection Between, it is possible to achieve multiple time domain Candidate Set positions are optional in search space, realize down control channel and downlink traffic channel it Between time division multiplex, and realized and the blind Detecting of identical complexity in LTE system single sub-frame within the cycle of configuration.

Embodiment 3

This alternative embodiment continuously takes subframe or subframe mode set for search space.And in different scenes configuration Search space is different.

Wherein Inband scenes when unavailable RE it is more (Legacy PDCCH, CRS etc.), support larger AL, The polymerization grade comprising AL=1 is supported during standalone/guardband scenes.Such as：Inband scenes support AL=2, 4th, 8,16, standalone/guardband scenes support AL=1,2,4,8.

Configuration mode is with implementation 1 or 2.

Wherein, when search space is determined with continuously taking subframe pattern, for inband scene search space and Candidate Set As shown in table 3-1, standalone/guardband scene search space and Candidate Set are as shown in table 3-2, wherein continuous take Subframe is physical sub-frame or can use subframe.

Table 3-1

Table 3-2

When wherein search space is determined with continuously taking subframe mode set, for inband scene search space and Candidate Set As shown in table 3-3, standalone/guardband scene search space and Candidate Set are as shown in table 3-4, wherein continuous take Subframe and subframe concentrate subframe all for physical sub-frame or can use subframe.Now base station also needs to configure the number of subframes of subframe collection With subframe collection time-domain position, preferably subframe collection time-domain position continuously takes the son of respective number since initial subframe in the cycle Frame.

Table 3-3

Table 3-4

By using the present embodiment method, by the way that different scenes are respectively configured with the continuous arrowband for taking subframe or subframe collection Control channel search space, to adapt to different scenes demand.When can realize between down control channel and downlink traffic channel Divide multiplexing, and the blind Detecting with identical complexity in LTE system single sub-frame is realized within the cycle of configuration.

Embodiment 4

The present embodiment takes subframe collection for the search space of time sharing transmissions in continuous scheduling window or detection window.Subframe collection Do not repeated in window.Transmission is repeated to be repeated only between window.

Now the Candidate Set of different numbers of repetition correspondence starting subframe in time domain is identical in search space.Now base station side Configuration repetition set { R1, R2, R3, R4 } or only configuration R4 remaining obtain according to factor k multiplications, such as k=1/2,1/4,1/8 Deng.Polymerization grade can be fixed, or determine different aggregation level sets according to different cover types.For example, now base station leads to The USS starting subframes for crossing RRC configurating terminals (are located in first scheduling window or detection window of cycle C=640ms Detection_window_index mod C/W=0), window W=20ms long, configuration subframe collection subframe set=N, such as N =8.N number of subframe continuously or discontinuously can configure in time domain, or be fixed as N number of son that first subframe in window starts Frame, now initial subframe be located at first subframe that subframe is concentrated in first detection window in cycle C.During now cover type is Deng cover type, configure Rmax=R4=16, now by factor k=1/2,1/4,1/8 determine remaining R3~R1 be respectively 8, 4、2.Repeat R detection window of transmission.Now polymerization grade is corresponding respectively with subframe collection, as shown in table 4-1.

Gathered using different AL during different covering grades, and/or the R determined using different Rmax is gathered, different R's rises Beginning subframe is identical, and total Candidate Set quantity is not more than Legacy LTE single sub-frame blind Detecting number of times.

Only dispatch window or detection window between repeat transmit when search space and Candidate Set as shown in table 4-1, wherein taking The subframe that subframe is concentrated is for physical sub-frame or can use subframe.Non-covered enhanced scene is represented if Rmax=1 or without repeating to pass Defeated scene, and do not exist other R values in search space in Rmax=1.

Table 4-1

By using the present embodiment method, by configuring arrowband control channel search space during time sharing transmissions, Ke Yishi Time division multiplex between down control channel and downlink traffic channel now is carried out in units of dispatching window or detection window, different letters are reduced Blocking rate during road difference covering scene.And realized and identical complexity in LTE system single sub-frame within the cycle of configuration Blind Detecting.

Embodiment 5

This alternative embodiment takes subframe collection for the search space of time sharing transmissions in continuous scheduling window or detection window.Son Frame collection is repeated in window.Transmission is repeated to repeat to be repeated and between window in window simultaneously.

Now the Candidate Set of different numbers of repetition correspondence starting subframe in time domain is identical in search space.Situation 1, in window Number of repetition fix or window between number of repetition fix, now base station side configuration repeats set and { R1, R2, R3, R4 } or only configures Remaining is obtained R4 according to factor k multiplications, such as k=1/2,1/4,1/8.Polymerization grade can be fixed, or according to different covering classes Type determines different aggregation level sets.For example, now base station is located at cycle C=by the USS starting subframes of RRC configurating terminals (i.e. positioned at detection_window_index mod C/W=0), window W long in first scheduling window or detection window of 640ms =20ms, configuration subframe collection subframe set=N, such as N=8.N number of subframe continuously or discontinuously can match somebody with somebody in time domain Put, or be fixed as N number of subframe that first subframe in window starts, now initial subframe is located at first detection window in cycle C First subframe that middle subframe is concentrated.Now cover type be medium cover type, configure Rmax=R4=16, now by because Sub- k=1/2,1/4,1/8 determine that remaining R3~R1 is respectively 8,4,2, and according in window, number of repetition is fixed between number of repetition or window Another is calculated, such as Rout=R/Rin or Rin=R/Rout.Repeat Rout detection window of transmission.Now polymerization grade with son Frame collection is corresponded to respectively, as shown in Table 5-1.The fixed value can be configured by base station by SIB or RRC, or according to covering grade It is implicit to determine.

Situation 1, in window number of repetition fix or window between number of repetition search space and Candidate Set such as table 5-1 institutes when fixing Show, wherein taking the subframe of subframe concentration for physical sub-frame or subframe can be used.Represented if Rmax=1 non-covered enhanced scene or Without repeating transmitting scene, now Rin=1, Rout=1, and in Rmax=1 in search space in the absence of other R, Rin, Rout value.

Table 5-1

Similar, situation 2, number of repetition has value set between number of repetition and window in window, and now Rin and Rout are deposited In value set, total number of repetition is determined by Rin × Rout, and value set can be fixed or base station is configured by SIB or RRC. Repeated Rout time between window, repeatedly Rin times in window, the search space of preferred embodiment and Candidate Set as shown in table 5-2, now blind check Survey number of times and be not more than blind Detecting number of times in single sub-frame.

Table 5-2

By using the present embodiment method, by configuring arrowband control channel search space during time sharing transmissions, Ke Yishi Time division multiplex between down control channel and downlink traffic channel now is carried out in units of dispatching window or detection window, different letters are reduced Blocking rate during road difference covering scene.Time delay reduction and resource profit can also be realized by increasing number of repetition in window simultaneously Lifted with rate.

Embodiment 6

The present embodiment takes subframe collection for the search space of time sharing transmissions in continuous scheduling window or detection window.Now search The Candidate Set of different numbers of repetition correspondence starting subframe in time domain is not all the same in rope space.I.e. non-Rmax numbers of repetition institute is right The Candidate Set answered has multiple starting subframes in search space in time domain.

Now base station side configuration repeat set { R1, R2, R3, R4 } or only configuration R4 remaining according to factor k be multiplied obtain, Such as k=1/2,1/4,1/8.Polymerization grade can be fixed, or determine different aggregation level sets according to different cover types. For example, now base station is located at first scheduling window or the detection of cycle C=640ms by the USS starting subframes of RRC configurating terminals (i.e. positioned at detection_window_index mod C/W=0) in window, window W=20ms long, configuration subframe collection subframe Set=N, such as N=8.N number of subframe continuously or discontinuously can configure in time domain, or be fixed as first subframe in window The N number of subframe for starting, now initial subframe be located at first subframe that subframe is concentrated in first detection window in cycle C.Now Cover type is medium cover type, configures Rmax=R4=16, now determines remaining R3 by factor k=1/2,1/4,1/8 ~R1 is respectively 8,4,2.

Different AL are used during different covering grades, and/or the R determined using different Rmax is gathered, starting of different R Frame is not all the same, and total Candidate Set quantity is not more than Legacy LTE single sub-frame blind Detecting number of times.

Only dispatching search space when repeating to transmit between window or detection window and Candidate Set as shown in Table 6-1, now R= Rout, wherein taking the subframe of subframe concentration for physical sub-frame or subframe can be used.Non-covered enhanced scene is represented if Rmax=1 Or without repeating transmitting scene, and do not exist other R values in search space in Rmax=1.

Table 6-1

Similar, when there is also number of repetition in window, such as one of number of repetition is between number of repetition and window in window During one fixed value, the fixed value can be configured by base station by SIB or RRC.Now there is value collection in one of Rin and Rout Close, total number of repetition R=Rin × Rout, value set can be fixed or base station is configured by SIB or RRC.

For number of repetition in window fix or window between number of repetition fix scene, when Rout is fixed, Rin time domain candidates Collection position relative position in window is identical, and Figure 14 is the Rin time domain Candidate Sets position according to alternative embodiment of the present invention in window Relative position identical schematic diagram, as shown in figure 14, search space Rout=4, Rin=1,2,4,8, Rin=2 one of them when Illustrate domain Candidate Set position.

Repeated Rout time between window, repeatedly Rin times in window, the search space of preferred embodiment and Candidate Set as shown in table 6-2, Now blind Detecting number of times is not more than blind Detecting number of times in single sub-frame.

Table 6-2

Similar, when there is also number of repetition in window, number of repetition has value set between number of repetition and window in window, this When Rin and Rout there is value set, total number of repetition is determined by Rin × Rout, and value set can be fixed or base station is logical Cross SIB or RRC configurations.Repeated Rout times between window, repetition Rin times, the search space of preferred embodiment and Candidate Set such as table in window Shown in 6-3, blind Detecting number of times to the quantity of polymerization grade quantity or R, it is necessary to have during now blind Detecting number of times is not more than single sub-frame Limited.

Table 6-3

By using this alternative embodiment method, by configuring arrowband control channel search space during time sharing transmissions, can To realize carrying out time division multiplex between down control channel and downlink traffic channel in units of dispatching window or detection window, and Increase corresponding candidate collection quantity in time domain to improve resource utilization.

Embodiment 7

The present embodiment takes subframe collection for the search space of time sharing transmissions in continuous scheduling window or detection window.Repeat secondary Number is uniquely determined with covering grade.

Number of repetition and covering grade uniquely determine including：Do not support to repeat in mode one, window, between number of repetition only refers to window Repeat, now R values in search space are uniquely determined.Mode two, there is number of repetition in window, now R=Rin × Rout and it is unique really It is fixed.

For mode one, covering grade is now distinguished, number of repetition is fixed, Candidate Set composition is { polymerization grade, Candidate Set Quantity }.When covering grade determines, R is uniquely determined, there is no R value set.Search space and Candidate Set are as shown in table 7-1.

Table 7-1

For mode two, three kinds of situations can be further divided into.Situation 1, number of repetition is equal between number of repetition and window in window It is fixed, it is identical with mode one.Situation 2, number of repetition product is fixed between number of repetition and window in window, Rout Candidate Sets starting subframe It is identical.Situation 3, number of repetition product is fixed between number of repetition and window in window, and non-Rout_max Candidate Sets starting subframe has multiple.

Candidate Set for number of repetition Rout between different window in situation 2 now search space is corresponding initial sub in time domain Frame is identical.Candidate Set for number of repetition Rout between different window in situation 3 now search space is corresponding initial sub in time domain Frame is not all the same.Now base station side configuration window in or window between number of repetition set and according to fixed R values imply obtain another Individual number of repetition set；Or only configuration window in or window between number of repetition maximum remaining according to factor k be multiplied obtain, such as k =1/2,1/4,1/8 etc., and another number of repetition set is obtained according to fixed R values are implicit.Polymerization grade can be fixed, Or determine different aggregation level sets according to different cover types.For example, now base station is risen by the USS of RRC configurating terminals Beginning subframe is in first scheduling window or detection window of cycle C=640ms (i.e. positioned at detection_window_index Mod C/W=0), window W=20ms long, configuration subframe collection subframe set=N, such as N=2.N number of subframe connects in time domain It is continuous or it is discontinuous can configure, or be fixed as N number of subframe that first subframe in window starts, now initial subframe is located at the cycle First subframe that subframe is concentrated in first detection window in C.Now configure Rout_max=8, now by factor k=1/2, 1/4th, 1/8 determines that remaining Rout3~Rout1 is respectively 4,2,1.R=8, i.e. Rin is now fixed to be obtained by the way that R/Rout is implicit. Now polymerization grade is corresponding respectively with subframe collection.Different AL are used during different covering grades, the initial subframe of different Rout is identical, Total Candidate Set quantity is not more than Legacy LTE single sub-frame blind Detecting number of times.Now search space and Candidate Set be as shown in table 7-2, The subframe of subframe concentration is wherein taken for physical sub-frame or subframe can be used.Non-covered enhanced scene or nothing are represented if Rmax=1 Transmitting scene, Rout=1, Rin=1 need to be repeated, and does not exist other R, Rout, Rin in search space in Rmax=1 Value.

Table 7-2

With the type of situation 2, for situation 3, difference is the time of now difference Rout numbers of repetition in search space Selected works correspondence starting subframe in time domain is not all the same.Candidate Set corresponding to i.e. non-Rout_max numbers of repetition is in search space There are multiple starting subframes in inherent time domain.Now search space and Candidate Set are as shown in table 7-3.

Table 7-3

By using the present embodiment method, by configuring arrowband control channel search space during time sharing transmissions, Ke Yishi Time division multiplex between down control channel and downlink traffic channel now is carried out in units of dispatching window or detection window, in covering grade Increase the frequency domain resource granularity of Candidate Set when being uniquely determined with number of repetition and reduce maximum blind check number of times.

Embodiments of the invention additionally provide a kind of storage medium.Alternatively, in the present embodiment, above-mentioned storage medium can To be arranged to storage for performing the program code of following steps：

S1：Terminal determines arrowband search space position；

S2：Terminal it is determined that arrowband search space in detect arrowband down control channel, wherein, search space is in time domain On in units of R subframe or subframe collection, search space on frequency domain in units of M subcarrier in whole arrowband or arrowband, Wherein R, M value collection are combined into positive integer, and subframe concentrates the X subframe for including, X values are fixed or base station is configurable.

Alternatively, the specific example in the present embodiment may be referred to described in above-described embodiment and optional embodiment Example, the present embodiment will not be repeated here.

Obviously, those skilled in the art should be understood that above-mentioned of the invention each module or each step can be with general Computing device realize that they can be concentrated on single computing device, or be distributed in multiple computing devices and constituted Network on, alternatively, the program code that they can be can perform with computing device be realized, it is thus possible to they are stored Performed by computing device in the storage device, and in some cases, can be with different from shown in order execution herein The step of going out or describe, or they are fabricated to each integrated circuit modules respectively, or by the multiple modules in them or Step is fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific hardware and software combination.

The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for the skill of this area For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair Change, equivalent, improvement etc., should be included within the scope of the present invention.

Claims

1. in a kind of narrowband systems search space determination method, it is characterised in that including：

Search space where terminal detection arrowband down control channel, wherein, the search space is in time domain with R subframe Or it is unit that subframe integrates, the search space on frequency domain in units of M subcarrier in whole arrowband or arrowband, wherein R, M Value collection is combined into positive integer, and the subframe is concentrated includes X subframe, and X values are fixed value or are configured by base station.

2. method according to claim 1, it is characterised in that

The search space is continuous or discrete in time domain, wherein, the cover type that the search space is supported include it is a kind of or Various, every kind of cover type corresponds to unique R values or a set for including multiple R values, and R represents the weight of down control channel Again count.

3. method according to claim 2, it is characterised in that

The search space continuously includes in time domain：The search space is continuous in units of subframe collection and/or the search Space is continuous in units of subframe.

4. method according to claim 3, it is characterised in that

The search space is determined by least one of following parameter：Initial subframe, subframe collection size, number of repetition or subframe Quantity, detection cycle, sub-band or sub-carrier positions, wherein it is determined that the parameter of the search space for predefined or fixed or Base station configures.

5. method according to claim 4, it is characterised in that

The initial subframe determines according at least one of following parameter：It is maximum number of repetitions Rmax, deviant offset, wireless Frame number SFN, cycle M；Wherein it is determined that mode include at least one of：

Initial subframe number is index index k, and meets the subframe of (10*SFN+k) mod Rmax=0；

Initial subframe number is index k, and meets the subframe of (10*SFN+k) mod N*Rmax=0, and N is just whole more than 0 Number；

Initial subframe number is index k, and meets the subframe of (10*SFN+k) mod M=0, and M is more than or equal to Rmax just Integer；

Initial subframe number is index k, and meets the subframe of (10*SFN+k+offset) mod M=0, M be more than or equal to The positive integer of Rmax；

Initial subframe number is index k, and meets the subframe of (10*SFN+k+X*offset) mod M=0, M be more than or equal to The positive integer of Rmax, X is the positive integer more than 0.

6. method according to claim 5, it is characterised in that

The value set in the initial subframe corresponding cycle determines according to cover type, the initial subframe corresponding cycle Value is configured or fixed by base station；And/or,

The value set of deviant offset or value determine according to cover type and/or cycle；Or, the deviant offset Value configured by base station or fixed or determined according to the cycle.

7. method according to claim 5, it is characterised in that

Carry the value set in the initial subframe corresponding cycle of search space where the down control channel of UL grant according to At least one of determines：Cover type, reverse link traffic channel PUSCH forms, the descending control letter of the carrying UL grant The value in the initial subframe corresponding cycle of search space where road is configured or fixed by base station；And/or,

The value set of deviant offset or value determine according at least one of：Cover type, cycle, uplink service letter Road PUSCH forms；Or, the value of the deviant offset is configured by base station or fixed or implied according to the cycle determining.

8. method according to claim 7, it is characterised in that

In big cover type, cycle M and/or deviant offset is more than value during small cover type.

9. method according to claim 4, it is characterised in that the subframe collection size configures true by fixed or base station It is fixed.

10. method according to claim 9, it is characterised in that the consecutive hours in time domain, the initial subframe is subframe collection First subframe.

11. methods according to claim 3, it is characterised in that

In the search space in time domain consecutive hours, repeatedly transmit in the subframe and subframe for using polymerization grade AL include it is following One of mode：

When in the absence of the subframe collection, in a sub- frame in the weight of AL=1,2, at least one of 4 since initial subframe R subframe is transmitted again；

When there is the subframe collection, since initial subframe the subframe concentrate with AL=1,2,4,8,16,32 to It is one of few to repeat to transmit R subframe collection；

Wherein, when the R subframe of transmission or the subframe collection are repeated initial subframe, the subframe for being used is available son Frame.

12. methods according to claim 1 and 2, it is characterised in that

The search space at least includes：The upload control search space of uplink authorization UL grant and downstream grants DL grant Descending command deployment space.

13. methods according to claim 12, it is characterised in that

The upload control search space is entirely different resource or each with the resource that the descending command deployment space uses From the resource of separate configurations.

14. methods according to claim 3, it is characterised in that

The composition form of Candidate Set includes one of in the following manner in the search space：

The Candidate Set is made up of one or more polymerization grade and various numbers of repetition, and different number of repetition Candidate Set institute Corresponding initial subframe is identical；

The Candidate Set is made up of one or more polymerization grade and various numbers of repetition, and different number of repetition Candidate Set institute Corresponding initial subframe is different, and the Candidate Set corresponding to non-maximum number of repetitions has multiple in the search space；

The Candidate Set is made up of various polymerization grades and a kind of number of repetition；

The Candidate Set is made up of a kind of polymerization grade, wherein, the Candidate Set takes all control channels in the search space Unit；

Polymerization grade corresponding to the Candidate Set determines according to different application scene, wherein, the application scenarios at least include： With interior Inband scenes, independent service band standalone, protection band guardband scenes.

15. methods according to claim 2, it is characterised in that when the search space is discrete in time domain, to detect Window or scheduling window are that unit uses part or all of resource in window；Or, discrete and descending in time domain in the search space When control channel repeats to transmit, using part or all of resource and carried out in window in window in units of detecting window or scheduling window And/or time domain is repeated between window.

16. methods according to claim 15, it is characterised in that it is described detection window or the scheduling window in, it is described under Row control channel and downlink traffic channel time division multiplex, or the down control channel the resource that is used of different cover types Time division multiplex.

17. methods according to claim 15, it is characterised in that when repeating to transmit, the search space is in the inspection The subframe collection surveyed in window is not repeated or number of repetition can be pre-configured with.

18. methods according to claim 15, it is characterised in that the search space is true by least one following parameter It is fixed：Initial subframe, subframe collection, number of repetition, scheduling window or number of repetition, repetition window long, detection cycle, sub-band in detection window Or sub-carrier positions, wherein it is determined that the mode of the search space is predefined or fixed or base station configuration.

19. methods according to claim 15, it is characterised in that

The terminal detects that the mode of initial control channel unit includes in the search space：The configuration of fixed or base station or root According to hash functions are in subframe or subframe collection or radio frames or detect iteration between window or search space, wherein, when repeating to transmit, Each subframe/subframe for repeating transmission is concentrated use in identical control channel unit, and the mode of the base station configuration includes：User Equipment UE proprietary radio resource control RRC configuration starting index and/or deviant offset, all UE startings are identical.

20. methods according to claim 15, it is characterised in that the composition form of Candidate Set includes in the search space One of in the following manner：

The Candidate Set is made up of one or more polymerization grade and various numbers of repetition, and different number of repetition Candidate Set institute Corresponding initial subframe is different, and the Candidate Set corresponding to non-maximum number of repetitions has multiple in search space；

Polymerization grade corresponding to the Candidate Set determines according to different application scene, wherein, the application scenarios at least include： With interior Inband scenes, independent service band standalone, protection band guardband scenes；

Wherein, the number of repetition is determined by number of repetition between window, or by window, number of repetition is true between number of repetition and window simultaneously It is fixed.

21. methods according to claim 1, it is characterised in that the search space with different type, different messages or Different user/user's group carries out time division multiplex.

22. methods according to claim 1, it is characterised in that the search space is by portion subcarriers on frequency domain During unit, frequency division multiplexing mode includes at least one of：Frequency division multiplex FDM, different type letter between same type channel FDM between FDM, different messages type between FDM between road, different cover types, to strengthen control channel unit ECCE for singly Bit multiplex different types of channels.

23. methods according to claim 22, it is characterised in that down control channel scheduling is indicated in the frequency division multiplexing The mode of downlink traffic channel includes at least one of：

Indicate subsequently to take subframe position and across sub-band or subcarrier instruction in same sub-band or sub-carrier positions simultaneously Subframe position is taken in different sub-bands.

24. methods according to claim 1, it is characterised in that

In the down control channel dispatching downlink Traffic Channel, the initial subframe of the downlink traffic channel is descending with described Control channel terminates interval between subframe in units of subframe or scheduling window, wherein, starting of the downlink traffic channel The value that frame and the down control channel terminate to be spaced between subframe is fixed value or variable value；

Wherein, the span of the variable value determines according at least one of following parameter：Detection cycle, scheduling window, covering Type, Physical Uplink Shared Channel PUSCH forms.

25. methods according to claim 1, it is characterised in that

Carry uplink authorization UL grant down control channel schedule upstream traffic channels when, the reverse link traffic channel rise Beginning subframe and the down control channel terminate interval between subframe in units of subframe or scheduling window, wherein, it is described up The value that the initial subframe and the down control channel of Traffic Channel terminate to be spaced between subframe is fixed value or variable value.

26. methods according to claim 25, it is characterised in that when definition relation is determined in units of window to dispatch, adjust Degree window is long identical in the uplink single-carrier single tone transmission channels at different sub-carrier interval or is independently determined.

27. methods according to claim 25, it is characterised in that the uplink authorization UL grant indicate the upper industry Initial subframe position of the business channel in window.

28. methods according to claim 25, it is characterised in that the uplink authorization UL grant indicate different sub-carrier The uplink single-carrier transmission of gap size.

29. methods according to claim 25, it is characterised in that the uplink authorization UL grant are between different sub-carrier Identical resource distribution instruction bit field is used every the uplink single-carrier transmission of size.

30. methods according to claim 1, it is characterised in that where the terminal detection arrowband down control channel Search space is configured to one or more by high-level signaling, including at least one of：

Individual process is only supported, base station is that terminal configures a search space by high-level signaling；

Multiple processes are supported, base station is that terminal configures a search space by high-level signaling；

Support multiple processes, base station is that terminal configures multiple search spaces by high-level signaling, wherein at least one process and its He is located in different search spaces process.

31. methods according to claim 30, it is characterised in that the support multiple process, base station passes through high-level signaling When configuring a search space for terminal, down control channel dispatching downlink Traffic Channel or upper industry in the search space The scheduling timing of business channel determines that method includes at least one of：

Value in the first timing value set that the Downlink Control Information carried by down control channel is indicated determines；

Value in the second timing value set that the Downlink Control Information carried by first down control channel is indicated is true It is fixed, and being carried relative to the i-th -1 down control channel of passing through that the downlink information that i-th down control channel carry indicates Downlink Control Information scheduling Traffic Channel terminate subframe deviant determine, i is the positive integer more than 1；

Value in the second timing value set that the Downlink Control Information carried by first down control channel is indicated is true It is fixed, and the value determination in the first timing value set of the downlink information instruction for passing through i-th down control channel carrying, I is the positive integer more than 1.

The determining device of search space in a kind of 32. narrowband systems, it is characterised in that including：

Detection module, the search space where for detecting arrowband down control channel, wherein, the search space is in time domain In units of R subframe or subframe collection, the search space is on frequency domain with M subcarrier in whole arrowband or arrowband as single Position, wherein R, M value collection are combined into positive integer, and the subframe is concentrated includes X subframe, and X values are fixed value or are configured by base station.