CN103460770B - The transmission method of a kind of descending control signaling, searching method and device - Google Patents

Abstract

Embodiments provide the transmission method of a kind of descending control signaling, searching method and device, described transmission method includes: send Downlink Control Information DCI, described DCI in the public search space of the control area of wireless communication system for indicating the search volume of the PDCCH of the data area being positioned at described wireless communication system；Described Downlink Control Information DCI also includes predetermined mark, and described predetermined mark is used for identifying described DCI.By the method and apparatus of the embodiment of the present invention, it is dynamically adapted PDCCH search space, saves signaling consumption, and avoid base station inconsistent with the search volume of user terminal.

Description

The transmission method of a kind of descending control signaling, searching method and device

Technical field

The present invention relates to the transmission technology in wireless communication system, particularly relate to the transmission side of a kind of descending control signaling Method, searching method and device.

Background technology

In LTE (Long Term Evolution, Long Term Evolution) system, various DCI (Downlink Control Information, Downlink Control Information) by base station with PDCCH (Physical Downlink Control Channel, Physical Downlink Control Channel) form send, data then by base station with PDSCH (Physical Downlink Shared Channel, Physical Downlink Shared Channel) form transmission.PDCCH Yu PDSCH with the form of time-division at every height Frame occurs, as it is shown in figure 1, the 1st～N number of OFDM (Orthogonal Frequency Division Multiplexing, OFDM) symbol is sending zone possible for PDCCH, N=1,2,3 or 4, high level configure, from The N+1 OFDM symbol starts the sending zone for PDSCH.

PDCCH supports sky based on CRS (Cell-specific Reference Signal, cell special reference) Between diversity multiple antennas send, maximum transmission antenna number is 4.PDCCH region is divided into again public search space and user Distinctive search volume.The public search space of all users is identical, and all users search for oneself in identical space PDCCH.The distinctive search volume of user then with RNTI (the Radio Network Temporary of user Identifier, wireless network identifies temporarily) relevant, user only searches for the PDCCH of oneself in the space of oneself.

For improving message transmission rate, improving spectrum efficiency, multiple antennas is used widely in a wireless communication system. In LTE-Advanced (the enhancing evolution of LTE) system, downlink can support up to 8 transmission antennas, To reach the transfer rate of 1Gbps.PDSCH composes row by precoding, wave beam, not only can improve transfer rate, Also can expand the coverage of signal.And PDCCH does not the most support that 8 antennas send, and only can support most 4 antennas Send diversity, therefore can not obtain the beam forming gain identical with PDSCH.

For improving the performance of Cell Edge User further, based on RRH (Remote separate on multiple geographical position Radio Header, far-end is without the end of a thread) the coordinated multipoint transmission technology of the network architecture will be in future broadband wireless communication systems In extensively apply.Under the network architecture of multiple RRH, by dispatching the user in each RRH coverage simultaneously PDSCH to obtain cell splitting gain, to improve cell capacity.Simultaneously, it is possible to by the PDSCH of multiple users The mode of spatial reuse improves cell capacity.And existing PDCCH based on CRS cannot obtain cell splitting and increase Benefit, therefore, people begin to focus on based on DM-RS (Demodulation Reference Signal, demodulation reference letter Number) the research of PDCCH, it is desirable to PDCCH is expanded to other districts from traditional top n OFDM symbol Territory, and how to notify the position of its new PDCCH search space of user, it is a urgently to be resolved hurrily problem.

It should be noted that introduction to technical background above be intended merely to convenient technical scheme is carried out clear, Complete explanation, and facilitate the understanding of those skilled in the art to illustrate.Can not be merely because these schemes be at this Bright background section is set forth and thinks that technique scheme is known to those skilled in the art.

Summary of the invention

The purpose of the embodiment of the present invention is to provide transmission method and the device of a kind of descending control signaling, by tradition PDCCH region in public search space in send the DCI of new definition, with the dynamic instruction new PDCCH of user Search volume information.

An aspect according to embodiments of the present invention, it is provided that the transmission method of a kind of descending control signaling, described method Including:

Base station sends Downlink Control Information DCI in the public search space of the control area of wireless communication system, described The special Physical Downlink Control Channel of user of the data area that DCI is positioned at described wireless communication system for instruction The search volume of PDCCH；

Described Downlink Control Information DCI also includes predetermined mark, and described predetermined mark is used for identifying described DCI.

Another one aspect according to embodiments of the present invention, it is provided that the searching method of a kind of descending control signaling, described Method includes:

Subscriber equipment determines that the search volume of the special physical downlink control channel PDCCH of user is at wireless communication system Control area send or the data area of wireless communication system send；

If the search volume of the special PDCCH of user is to send in the data area of wireless communication system, then user sets Standby searching downlink control information DCI in the public search space of the control area of described wireless communication system, and decode Described DCI；

The search of the PDCCH of the data area being positioned at wireless communication system that subscriber equipment indicates according to described DCI is empty Between, search comprises descending PDSCH scheduling or the special PDCCH of user of up PUSCH scheduling.

Another one aspect according to embodiments of the present invention, it is provided that a kind of base station, described base station includes:

Transmitting element, it sends Downlink Control Information in the public search space of the control area of wireless communication system The special PDCCH of user of the data area that DCI, described DCI are positioned at described wireless communication system for instruction searches Rope space；

Described Downlink Control Information DCI also includes predetermined mark, and described predetermined mark is used for identifying described DCI.

Another one aspect according to embodiments of the present invention, it is provided that a kind of subscriber equipment, wherein, described subscriber equipment Including:

Determining unit, it determines that the search volume of the special physical downlink control channel PDCCH of user is in radio communication The control area of system sends or sends in the data area of wireless communication system；

Decoding unit, described, it determines that unit determines that the search volume of the special PDCCH of user is in radio communication system When the data area of system sends, searching downlink control in the public search space of the control area of described wireless communication system Information DCI processed, and decode described DCI；

Read unit, the number being positioned at wireless communication system of its DCI instruction obtained according to the decoding of described decoding unit According to the search volume of the PDCCH in region, search comprises descending PDSCH scheduling or the use of up PUSCH scheduling The special PDCCH in family.

Another one aspect according to embodiments of the present invention, it is provided that a kind of computer-readable program, wherein when in base station During this program of middle execution, this program makes computer perform the transmission side of aforesaid descending control signaling in described base station Method.

Another one aspect according to embodiments of the present invention, it is provided that a kind of storage has the storage of computer-readable program to be situated between Matter, wherein this computer-readable program makes computer perform the transmission side of aforesaid descending control signaling in a base station Method.

Another one aspect according to embodiments of the present invention, it is provided that a kind of computer-readable program, wherein when user When performing this program in equipment, this program makes computer perform aforesaid descending control signaling in described subscriber equipment Searching method.

Another one aspect according to embodiments of the present invention, it is provided that a kind of storage has the storage of computer-readable program to be situated between Matter, wherein this computer-readable program makes computer perform the search of aforesaid descending control signaling in a user device Method.

Having the beneficial effects that of the embodiment of the present invention: by sending out in the public search space in tradition PDCCH region Send the DCI of new definition, user's new PDCCH search space information can be indicated dynamically.By the program, movably State adjusts PDCCH search space, saves signaling consumption, and avoids base station inconsistent with the search volume of user terminal.

With reference to explanation hereinafter and accompanying drawing, disclose in detail only certain exemplary embodiments of this invention, specify the former of the present invention Reason can be in adopted mode.It should be understood that embodiments of the present invention are not so limited in scope.? In the range of the spirit and terms of claims, embodiments of the present invention include many changes, revise and be equal to.

The feature described for a kind of embodiment and/or illustrate can be in same or similar mode one or more Other embodiment individual uses, combined with the feature in other embodiment, or substitute in other embodiment Feature.

It should be emphasized that term " includes/comprises " existence referring to feature, one integral piece, step or assembly herein when using, But it is not precluded from the existence of one or more further feature, one integral piece, step or assembly or additional.

Accompanying drawing explanation

The a lot of aspects of the present invention be may be better understood with reference to following accompanying drawing.Parts in accompanying drawing are not proportional painting System, and it is intended merely to illustrate the principle of the present invention.For the ease of illustrating and describe the some parts of the present invention, accompanying drawing Middle corresponding part may be exaggerated or minimized.Element described in the accompanying drawing of the present invention or a kind of embodiment and Feature can combine with the element shown in one or more other accompanying drawing or embodiment and feature.Additionally, In accompanying drawing, similar label represents parts corresponding in several accompanying drawing, and may be used to indicate in more than one embodiment The corresponding component used.In the accompanying drawings:

Fig. 1 is LTE system PDCCH/PDSCH sending zone schematic diagram；

Fig. 2 is the PDCCH/PDSCH sending zone schematic diagram of the embodiment of the present invention；

Fig. 3 is the flow chart of the transmission method of the descending control signaling of the embodiment of the present invention；

Fig. 4 be the DCI flag that newly defines of the embodiment of the present invention schematic diagram is set；

Fig. 5 is the flow chart of the searching method of a kind of descending control signaling that the embodiment of the present invention provides；

Fig. 6 a is that DCI only includes that the DCI of the offset information of search volume loads schematic diagram；

Fig. 6 b is that DCI includes that the DCI of the offset information of time-frequency resource allocating information and search volume loads schematic diagram；

Fig. 7 is the composition schematic diagram of a kind of base station that the embodiment of the present invention provides；

Fig. 8 is the composition schematic diagram of a kind of subscriber equipment that the embodiment of the present invention provides.

Detailed description of the invention

Referring to the drawings, by description below, the aforementioned and further feature of the embodiment of the present invention will be apparent from. These embodiments are exemplary, are not limitations of the present invention.In order to enable those skilled in the art to hold Change places and understand principle and the embodiment of the present invention, descending with in LTE/LTE-A system of embodiments of the present invention Illustrate as a example by controlling the transmission method of signaling, searching method and device, it is to be understood that, the embodiment of the present invention is also Being not limited to said system, other wireless communication systems of transmission and search for relating to descending control signaling are the most applicable.

Fig. 2 is the PDCCH/PDSCH sending zone schematic diagram of the embodiment of the present invention, as in figure 2 it is shown, at this In bright embodiment, by the search volume of PDCCH from tradition PDCCH region, namely traditional top n OFDM Sign extended is to the PDSCH region from N+1 sign-on, new PDCCH region as shown in Figure 2.Logical The method crossing the present embodiment, user need to obtain the particular location of new PDCCH region, the son load i.e. taken on frequency domain Ripple resource and/or the information of OFDM symbol taken in time domain, user then can carry out blind Detecting in the region, Respective PDCCH is demodulated with correct.

Embodiment 1

Fig. 3 is the flow chart of the transmission method of the descending control signaling of the embodiment of the present invention, refer to Fig. 3, the method Including:

Step 301: send Downlink Control Information DCI in the public search space of the control area of wireless communication system, The described Downlink Control Information DCI user for the data area that instruction is positioned at described wireless communication system is special The search volume of PDCCH.

In step 301, wireless communication system can be LTE system, such as LTE R8 system；Can also be LTE-A System, such as LTE-AR-10 system；Can also is that other send various Downlink Control Information DCI by PDCCH System, the present embodiment is not in this, as restriction.

In step 301, Downlink Control Information DCI also includes predetermined mark, and this predetermined mark is used for identifying this DCI. According to this predetermined mark, user may determine that the DCI sent in the control area of wireless communication system is that the present invention is real Execute the DCI that example newly defines, or existing DCI.

Wherein, Downlink Control Information DCI can be by the redundant bit in existing DCI as predetermined mark, with existing DCI distinguishes, namely in new DCI, utilizes the pre-definite proportion on the position of the redundant bit in corresponding existing DCI Special as this predetermined mark；Also can distinguish by the RNTI of new definition as predetermined mark with existing DCI.Preferably , the RNTI length of new definition is identical with the CRC length of PDCCH, carries out binary system with CRC and is added, can With a length of 8 or 16, it is possible to be simultaneously allocated to multiple user, report to corresponding multiple use by high-level signaling Family.Preferably, the redundant bit in existing DCI, available RIV (Resource Indication Value, resource Indicated value) in untapped code-point (code point) as mark, such as, if the front M position in RIV is Complete 1, then it represents that this DCI is the DCI of new definition, otherwise then represents that this DCI is existing DCI 0/1A.Such as figure Shown in 4, if ' xxxx...xx '=' 11xx...xx ', then ' 11 ' as mark, represents that this DCI is new definition DCI；If ' xxxx...xx '=' 01xx...xx ', or ' xxxx...xx '=' 00xx...xx ', or ' xxxx...xx '=' 10xx...xx ', then owing to ' xxxx...xx ' is the rational RA (Resource in DCI 0/1A Allocation, resource distribution) information, represent that this DCI is existing DCI 0/1A.

Wherein, existing DCI refers to DCI defined in each standard of existing wireless communications system, is different from this The DCI of the new definition that bright embodiment provides.

In the present embodiment, the control area of wireless communication system refers to, in current wireless communication system, be used for sending The region of Downlink Control Information, PDCCH region as shown in Figure 1, or the traditional PDCCH district shown in Fig. 2 Territory.The data area of wireless communication system refers in current wireless communication system, for sending the region of data, as PDSCH region shown in Fig. 1, or the PDSCH region shown in Fig. 2.In the present embodiment, existing DCI Refer to the various Downlink Control Information in current wireless communication system, such as, send out in the PDCCH region shown in Fig. 1 The DCI sent, relative to this existing DCI, the method for the embodiment of the present invention also can be in PDCCH region shown in this Fig. 1 Send the DCI, this DCI of a search volume for indicating the special PDCCH of user sent in data area It is the DCI that the embodiment of the present invention newly defines.In the following description, identical definition has identical implication.

The present embodiment indicates the search volume of the PDCCH being positioned at data area by a kind of DCI of new definition, according to The DCI of new definition, user may determine that the particular location of this PDCCH region.Below by by different embodiments It is illustrated.

In one embodiment, the Downlink Control Information DCI of new definition includes being positioned at the searching of PDCCH of data area The time-frequency resource allocating information in rope space.Time-frequency resource allocating information included in DCI by this new definition, UE May determine that the particular location of the search volume of the special PDCCH of its user.

Wherein, the distribution method of this running time-frequency resource is set in advance, and it can be fixing, it is also possible to is optional And have high-level signaling to notify, to ensure that base station end is consistent with the understanding of user terminal.Preferably, time-frequency resource allocating Method can use the type 0 (type 0) in LTE system, type 1 (Class1) or type2 (type 2), also Can be the time-frequency resource allocating mode of new definition, the present embodiment be in this, as restriction.

Wherein, this time-frequency resource allocating information can be cell-specific (cell-specific) public information, i.e. institute in community User is had to share identical search space regions；It is alternatively sending point special (TP-specific) public information, i.e. same The user of one sending point service shares identical search space regions；It is alternatively cooperation sending point and gathers special (CoMP Set-specific) public information, the user of the most same cooperation collection service shares identical search space regions.

In another embodiment, the Downlink Control Information DCI of this new definition is except including being positioned at data area The time-frequency resource allocating information of the search volume of the special PDCCH of user, also includes the offset information of search volume.Example As: preferably, the DCI of described new definition, except comprising cell-specific search volume information, also includes TP-specific Search volume offset information.Preferably, the DCI of described new definition except comprising TP-specific search volume information, Also include UE-specific search volume offset information.Preferably, the DCI of described new definition is except comprising Cell-specific search volume information, also includes CoMP set-specific search volume offset information.Preferably, institute State the DCI of new definition except comprising CoMP set-specific search volume information, also include UE-specific space Offset information.Time-frequency resource allocating information included in DCI by this new definition and the offset information of search volume, UE may determine that the particular location of the search volume of the special PDCCH of its user.

In another embodiment, the Downlink Control Information DCI of this new definition can only include the inclined of search volume Shifting information.Wherein, it is preferred that this offset information is UE-specific search volume offset information, or be CoMP Set-specific search volume offset information, or be TP-specific search volume offset information.By this new definition The offset information of the search volume included in DCI, UE may determine that the search volume of the special PDCCH of its user Particular location.

In the present embodiment, the length of the DCI of new definition can be identical with existing DCI 0/1A length, or with Existing DCI 1C length is identical, and by aforesaid predetermined mark distinguish DCI that this DCI is new definition or Existing DCI.But the present embodiment is not in this, as restriction, in other examples, the DCI's newly defined Length can also be different from the length of existing DCI, have the most both been different from the length of existing DCI 0/1A, the most not It is same as the length of existing DCI 1C.If the length of the DCI of new definition and existing DCI 0/1A or DCI 1C Length be different from, the present embodiment still can continue to use aforementioned predetermined mark to distinguish other information, such as, utilize new The RNTI of definition represents and distributes to multiple users etc..

The transmission method of the descending control signaling that the embodiment of the present invention proposes, is positioned at number by the DCI instruction of new definition According to the search volume of the special Physical Downlink Control Channel of the user in region (PDCCH), and the public affairs in data area The DCI of this new definition is sent altogether, with dynamic instruction user's special PDCCH search space information in search volume. Thus, user can obtain the particular location of the special PDCCH search space of user, the son load i.e. taken on frequency domain Ripple resource and/or the information of OFDM symbol taken in time domain, user then can carry out blind Detecting in the region, Respective PDCCH is demodulated with correct.By the program, it is dynamically adapted PDCCH search space, saves signaling Expense, and avoid base station inconsistent with the search volume of user terminal.

The embodiment of the present invention additionally provides the searching method of a kind of descending control signaling being applied to subscriber equipment, as following Embodiment 2 described in.It is the respective handling of the user side of the method for corresponding above-described embodiment 1 due to the method, therefore The enforcement of the method repeats no more in place of the repetition of the enforcement of the method for embodiment 1.

Embodiment 2

Fig. 5 is the flow chart of the searching method of a kind of descending control signaling that the embodiment of the present invention provides, and refer to Fig. 5, The method includes:

Step 501: subscriber equipment, according to the high-rise instruction information received from base station side, determines the special PDCCH of user Search volume be the control area of wireless communication system send or the data area of wireless communication system send；

Step 502: if the search volume of the special PDCCH of user is to send in the data area of wireless communication system, Then subscriber equipment searching downlink in the public search space of the control area of wireless communication system controls information DCI, and Decode this Downlink Control Information DCI；

Wherein, subscriber equipment can be according to the predetermined mark in this DCI, it is judged that whether the DCI searched is new fixed The DCI of justice, if the DCI of new definition, then subscriber equipment is by decoding the DCI of this new definition, can be somebody's turn to do The search volume of the special PDCCH of user of the DCI instruction of the new definition particular location in data area.If it is determined that Result be that the DCI searched is not the DCI of new definition but tradition DCI, then subscriber equipment is conventionally, Carry out descending PDSCH reception according to this DCI or up PUSCH sends or power adjusts.

Step 503: according to the special PDCCH of the user being positioned at data area of described Downlink Control Information DCI instruction Search volume, search comprise descending PDSCH scheduling or up PUSCH (Physical Uplink Shared Channel, Physical Uplink Shared Channel) user special (UE-specific) PDCCH that dispatches.

Wherein, decode the Downlink Control Information DCI of the public search space being positioned at control area according to step 502 after, The search volume of the special PDCCH of user being positioned at data area can be obtained, according to the special PDCCH's of this user Search volume, subscriber equipment by searching for and can demodulate this PDCCH, it is thus achieved that the descending control signaling of oneself.

In the present embodiment, same as in Example 1, the Downlink Control Information DCI of this new definition can only include being positioned at The time-frequency resource allocating information of the search volume of the special PDCCH of user of data area, it is also possible to only include search sky Between offset information, it is also possible to both include being positioned at the time-frequency resource allocating letter of the search volume of the PDCCH of data area Breath, includes again the offset information of search volume.Wherein this time-frequency resource allocating information can be cell-specific public information, Or the special public information in sending point, or the special public information of cooperation sending point set.Wherein this search volume is inclined Shifting information can be sending point dedicated search spatial deviation information；Or user's dedicated search spatial deviation information；Or Cooperation sending point set dedicated search spatial deviation information.Therefore, the DCI of this new definition of the present embodiment can be by Multiple users read simultaneously.Preferably, the plurality of user can be all users or the certain customers of same community, also Can be all users of same TP (Transmission Point, sending point), or be same CoMP set All users of (set of cooperation sending point).

In order to the method making the present embodiment is more clear understandable, only include being positioned at data with the DCI of new definition individually below The time-frequency resource allocating information of the search volume of the special PDCCH of user in region, only includes the skew letter of search volume Breath, and both include the time-frequency resource allocating information being positioned at the search volume of the PDCCH of data area, include again searching As a example by the offset information in rope space, the searching method of the descending control signaling of the subscriber equipment of the present embodiment is said Bright.

The new DCI defined is only included to the time-frequency money of the search volume of the special PDCCH of user being positioned at data area The situation of source distribution information.After user decodes this DCI, can be according to this time-frequency resource allocating information and existing Searching method, determine the PDCCH of their own, such as according to the RNTI of their own according to Hash (Hash) letter Number determines its user's dedicated search space.

When the DCI of new definition only includes the offset information of search volume.After user decodes this DCI, can To combine the information of the search volume of the special PDCCH of the user being positioned at data area of high-level signaling instruction, determine it The PDCCH of oneself.Such as, refer to Fig. 6 a, if the special PDCCH of user of the data area of high-level signaling instruction Search volume information be cell public information, it is empty that the DCI of the new definition that decoding obtains only comprises user's dedicated search Between offset information, every user distribute X bit instruction user's dedicated search spatial deviation information, comprise L user altogether Offset information.Then user is according to the order being pre-configured with, and can be successively read respective offset information.

DCI for new definition both includes that the time-frequency being positioned at the search volume of the special PDCCH of user of data area provides Source distribution information, includes again the situation of the offset information of search volume.Such as, refer to Fig. 6 b, the DCI of new definition Partial bit for indicating the running time-frequency resource of the special PDCCH search space of user of total data area, sending point Distribution information, partial bit each has the skew of search volume for indicating L user relative to this sending point.Then use Family, according to the order being pre-configured with, can be successively read respective offset information.

By the searching method of the descending control signaling that the embodiment of the present invention proposes, user can obtain new PDCCH and search The particular location in rope space, the sub-carrier resources i.e. taken on frequency domain and/or the OFDM symbol taken in time domain Information, user then can carry out blind Detecting in the region, demodulates respective PDCCH with correct.By the program, It is dynamically adapted PDCCH search space, saves signaling consumption, and avoid the search volume of base station and user terminal not Unanimously.

The embodiment of the present invention additionally provides a kind of base station, as described in example 3 below.Owing to this base station solves problem Principle similar to the method for above-described embodiment 1, therefore the enforcement of this base station may refer to the reality of method of embodiment 1 Execute, repeat no more in place of repetition.

Embodiment 3

Fig. 7 is the composition schematic diagram of a kind of base station that the embodiment of the present invention provides, and refer to Fig. 7, and this base station includes:

Transmitting element 71, it sends descending control in the public search space of the control area of wireless communication system and believes Breath DCI, described Downlink Control Information DCI are positioned at the user of the data area of described wireless communication system for instruction The search volume of special PDCCH.Wherein, described Downlink Control Information DCI also includes predetermined mark, described predetermined Mark is used for identifying described DCI, to distinguish with existing DCI.

In one embodiment, the Downlink Control Information DCI that transmitting element 71 sends only includes being positioned at data area The time-frequency resource allocating information of the search volume of the special PDCCH of user.

In another embodiment, the Downlink Control Information DCI that transmitting element 71 sends only includes search volume Offset information.

In another embodiment, the Downlink Control Information DCI that transmitting element 71 sends both had included being positioned at data field The time-frequency resource allocating information of the search volume of the special PDCCH of user in territory, includes again the offset information of search volume.

Wherein, time-frequency resource allocating information can be: cell-specific public information, or the special public information in sending point, Or special public information is gathered in cooperation sending point.

Wherein, the offset information of search volume can be: sending point dedicated search spatial deviation information；Or, user Dedicated search spatial deviation information；Or, cooperation sending point set dedicated search spatial deviation information.

In another embodiment, the pre-calibration included in Downlink Control Information DCI that transmitting element 71 sends Knowledge can be the predetermined bit in described DCI, the corresponding existing DCI in described predetermined bit position in described DCI In the position of redundant bit.The predetermined mark included in Downlink Control Information DCI that transmitting element 71 sends is also Can be that described making a reservation for is designated Radio Network Temporary Identifier RNTI.

The base station that the embodiment of the present invention proposes, is positioned at the data field of wireless communication system by the DCI instruction of new definition The search volume of the special Physical Downlink Control Channel of the user (PDCCH) in territory, and in the control of this wireless communication system The DCI of this new definition is sent, with dynamic instruction user new PDCCH search in public search space in region processed Spatial information.Thus, user can obtain the particular location of new PDCCH search space, i.e. takies on frequency domain Sub-carrier resources and/or the information of OFDM symbol taken in time domain, user then can carry out blind check in the region Survey, demodulate respective PDCCH with correct.By the program, it is dynamically adapted PDCCH search space, saves Signaling consumption, and avoid base station inconsistent with the search volume of user terminal.

The embodiment of the present invention additionally provides a kind of subscriber equipment, as described in example 4 below.Due to this subscriber equipment The principle of solution problem is similar to the method for above-described embodiment 2, and therefore the enforcement of this subscriber equipment may refer to embodiment The enforcement of the method for 2, repeats no more in place of repetition.

Embodiment 4

Fig. 8 is the composition schematic diagram of a kind of subscriber equipment that the embodiment of the present invention provides, and refer to Fig. 8, and this user sets For including:

Determining unit 81, it, according to the high-rise instruction information received from base station side, determines the special PDCCH's of user Search volume is to send in the control area of wireless communication system or send in the data area of wireless communication system；

Decoding unit 82, described, it determines that unit 81 determines that the search volume of the special PDCCH of user is wireless When the data area of communication system sends, in the public search space of control area, searching downlink controls information DCI, And decode described Downlink Control Information DCI；

Read unit 83, being positioned at of its Downlink Control Information DCI instruction obtained according to the decoding of described decoding unit 82 The search volume of the special PDCCH of user of data area, search comprises descending PDSCH scheduling or up PUSCH The special PDCCH of user of scheduling.

In the present embodiment, decoding unit 82 can be according to the predetermined mark in described DCI, it is judged that searched DCI is the DCI of new definition, by decoding the DCI of this new definition, can obtain the search of the special PDCCH of user Space is at the particular location of data area.

In the present embodiment, the predetermined mark in described Downlink Control Information DCI can be: pre-in described DCI Definite proportion is special, the position of the redundant bit in the corresponding existing DCI in described predetermined bit position in described DCI.Institute State the predetermined mark in Downlink Control Information DCI and can also be designated Radio Network Temporary Identifier for described making a reservation for RNTI。

The subscriber equipment proposed by the embodiment of the present invention, user can obtain the concrete position of new PDCCH search space Putting, the sub-carrier resources i.e. taken on frequency domain and/or the information of the OFDM symbol taken in time domain, user is then Blind Detecting can be carried out in the region, demodulate respective PDCCH with correct.By the program, it is dynamically adapted PDCCH search space, saves signaling consumption, and avoids base station inconsistent with the search volume of user terminal.

The embodiment of the present invention additionally provides a kind of computer-readable program, wherein when performing this program in a base station, and should Program makes computer perform the transmission method of the descending control signaling described in embodiment 1 in described base station.

The embodiment of the present invention additionally provides a kind of storage the storage medium of computer-readable program, and wherein this computer can Reader makes computer perform the transmission method of the descending control signaling described in embodiment 1 in a base station.

The embodiment of the present invention additionally provides a kind of computer-readable program, wherein when performing this program in terminal unit Time, this program makes computer perform the searcher of the descending control signaling described in embodiment 3 in described terminal unit Method.

The embodiment of the present invention additionally provides a kind of storage the storage medium of computer-readable program, and wherein this computer can Reader makes computer perform the searching method of the descending control signaling described in embodiment 3 in terminal unit.

The apparatus and method more than present invention can be realized by hardware, it is also possible to is realized by combination of hardware software.The present invention Relate to such computer-readable program, when this program is by time performed by logical block, it is possible to make this logical block realize Devices described above or component parts, or make this logical block realize various methods mentioned above or step.Logic The processor etc. used in parts such as field programmable logic parts, microprocessor, computer.The invention still further relates to For storing the storage medium of procedure above, such as hard disk, disk, CD, DVD, flash memory etc..

Above in association with specific embodiment, invention has been described, it will be appreciated by those skilled in the art that this A little descriptions are all exemplary, are not limiting the scope of the invention.Those skilled in the art can be according to this The present invention is made various variants and modifications by spirit and the principle of invention, and these variants and modifications are also in the scope of the present invention In.

Claims (13)

1. a transmission method for descending control signaling, wherein, described method includes:

Base station sends Downlink Control Information DCI in the public search space of the control area of wireless communication system, described The special Physical Downlink Control Channel of user of the data area that DCI is positioned at described wireless communication system for instruction The search volume of PDCCH；

Described DCI includes predetermined mark, and described predetermined mark is used for identifying described DCI,

Wherein, described DCI also includes the time-frequency resource allocating being positioned at the search volume of the PDCCH of described data area Information, and/or the offset information of search volume.

Method the most according to claim 1, wherein, described time-frequency resource allocating information includes:

Cell-specific public information；Or,

The special public information in sending point；Or,

Special public information is gathered in cooperation sending point.

Method the most according to claim 1, wherein, the offset information of described search volume includes:

Sending point dedicated search spatial deviation information；Or,

User's dedicated search spatial deviation information；Or,

Cooperation sending point set dedicated search spatial deviation information.

Method the most according to claim 1, wherein, described making a reservation for is designated the predetermined bit in described DCI； Or described making a reservation for is designated Radio Network Temporary Identifier RNTI.

5. a searching method for descending control signaling, wherein, described method includes:

Subscriber equipment determines that the search volume of physical downlink control channel PDCCH is the control zone at wireless communication system Territory sends or sends in the data area of wireless communication system；

If the search volume of described PDCCH is to send in the data area of wireless communication system, then subscriber equipment exists In the public search space of the control area of described wireless communication system, searching downlink controls information DCI, and decodes described DCI；

The search volume of the PDCCH being positioned at data area that subscriber equipment indicates according to described DCI, searches for inclusion Reason DSCH Downlink Shared Channel PDSCH scheduling or the special PDCCH of user of Physical Uplink Shared Channel PUSCH scheduling.

Method the most according to claim 5, wherein, before the described DCI of described decoding, described method is also wrapped Include:

According to the predetermined mark of described DCI, determine whether described DCI is to be positioned at described radio communication system for instruction The DCI of the search volume of the special PDCCH of user of the data area of system, if it is, determine according to described DCI The PDCCH of data area searches element space.

Method the most according to claim 6, wherein:

Described making a reservation for is designated the predetermined bit in described DCI；Or described making a reservation for is designated Radio Network Temporary Identifier RNTI。

8. a base station, wherein, described base station includes:

Transmitting element, it sends Downlink Control Information in the public search space of the control area of wireless communication system DCI, described DCI are positioned at the search volume of the PDCCH of the data area of described wireless communication system for instruction；

Described DCI includes predetermined mark, and described predetermined mark is used for identifying described DCI,

Wherein, the DCI that described transmitting element sends also include being positioned at the search volume of the PDCCH of data area time Frequently resource allocation information, and/or the offset information of search volume.

Base station the most according to claim 8, wherein,

Described time-frequency resource allocating information includes: cell-specific public information, or the special public information in sending point, or Person cooperate sending point gather special public information；

The offset information of described search volume includes: sending point dedicated search spatial deviation information；Or user is special to be searched Rope spatial deviation information；Or cooperation sending point set dedicated search spatial deviation information.

Base station the most according to claim 8, wherein, described transmitting element send DCI included in pre- Surely the predetermined bit in described DCI it is designated；Or described making a reservation for is designated Radio Network Temporary Identifier RNTI.

11. 1 kinds of subscriber equipmenies, wherein, described subscriber equipment includes:

Determining unit, it determines that the search volume of the special physical downlink control channel PDCCH of user is in radio communication The control area of system sends or sends in the data area of wireless communication system；

Decoding unit, described, it determines that unit determines that the search volume of the special PDCCH of user is in radio communication system When the data area of system sends, searching downlink control in the public search space of the control area of described wireless communication system Information DCI processed, and decode described DCI；

Read unit, the PDCCH being positioned at data area of its DCI instruction obtained according to the decoding of described decoding unit Search volume, search comprise Physical Downlink Shared Channel PDSCH scheduling or Physical Uplink Shared Channel PUSCH The special PDCCH of user of scheduling.

12. subscriber equipmenies according to claim 11, wherein, described decoding unit is specifically for according to described The predetermined mark of DCI, determines whether described DCI is the data area being positioned at described wireless communication system for instruction The DCI of search volume of the special PDCCH of user, if it is, decode described DCI.

13. subscriber equipmenies according to claim 12, wherein, the predetermined of described DCI is designated described DCI In predetermined bit；Or the predetermined of described DCI is designated Radio Network Temporary Identifier RNTI.