CN103428881A

CN103428881A - PDCCH (packet data control channel) signaling transmitting and receiving method, base station, UE (user's equipment) and system

Info

Publication number: CN103428881A
Application number: CN2013103625185A
Authority: CN
Inventors: 曲秉玉; 官磊; 薛丽霞
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2010-02-11
Filing date: 2010-04-30
Publication date: 2013-12-04
Anticipated expiration: 2030-04-30
Also published as: CN103476126A; CN103428881B; CN103476126B; CN103442444B; CN102158979A; CN103442444A

Abstract

The invention provides a PDCCH (packet data control channel) signaling transmitting and receiving method, a base station, a UE (user's equipment) and a system. The transmitting method includes allowing the base station to determine positions of a first search space and a second search space; if the length of the PDCCH signaling without a CIF (carrier indicate field) in the first search space is equal to that with the CIF in the second search space, and a physical overlapped region exists in the first search space and the second search space, then the base station transmits the PDCCH signaling without the CIF to the UE in the physical overlapped region. According to the embodiment of the method, the base station, the UE and the system, scheduling ambiguity of the base station can be avoided, and the problem of analytical errors of the UE can be avoided accordingly.

Description

PDCCH signaling method of sending and receiving, base station, UE and system

Technical field

The embodiment of the present invention relates to communication technical field, relate in particular to a kind of Physical Downlink Control Channel (Physical Downlink Control Channel, abbreviation PDCCH) signaling method of sending and receiving, base station, subscriber equipment (User Equipment is called for short UE) and system.

Background technology

At the LTE of evolution system (LTE-Advanced, be called for short LTE-A) in, introduced carrier aggregation (Carrier Aggregation, be called for short CA) technology, be about to a plurality of member carriers (Component Carrier, abbreviation CC) resource is dispatched to a subscriber equipment (User Equipment is called for short UE) simultaneously and is used, to meet higher peak rate and business demand.

In the system that does not adopt the CA technology, a Physical Downlink Control Channel (Physical Downlink Control Channel is called for short PDCCH) signaling is only to dispatch the resource of a carrier wave.In the system that has adopted the CA technology, if a UE polymerization a plurality of carrier waves transmit data, UE needs corresponding a plurality of PDCCH signalings.

In the LTE-A system, there are two kinds of modes can scheduling resource.A kind of mode is same carrier dispatching (Same-CC Scheduling, be called for short SCS), and the PDCCH signaling on certain carrier wave is only to dispatch the resource of this carrier wave or the up-link carrier corresponding with this carrier wave.Another kind of mode is across carrier dispatching (Cross-CC Scheduling is called for short CCS), the resource that the PDCCH signaling on certain carrier wave can be dispatched this carrier wave or other carrier waves.In across carrier scheduling mode, need in the specific PDCCH signaling of UE, add carrier wave directive territory (Carrier Indicator Field, be called for short CIF) to indicate the PDCCH signaling is for dispatching resource on which carrier wave.Especially, in the public PDCCH signaling of multi-user, can not add CIF, so that the coexisting of the UE in the UE in the LTE-A system and LTE system.

(Radio Resource Control is called for short RRC) signaling UE, any source scheduling mode of current concrete employing are controlled in base station by sending semi-static Radio Resource.Notifying UE current is to adopt CCS mode or SCS mode.When UE adopts SCS mode scheduling resource under the RRC idle condition or under the RRC connection status, the PDCCH signaling does not comprise CIF.When UE adopts CCS mode scheduling resource under connection status, the PDCCH signaling comprises CIF.Base station sends semi-static RRC signaling to after UE, if UE has received this semi-static RRC signaling, UE can detect and resolve the PDCCH signaling according to the source scheduling mode of indicating in semi-static RRC signaling.But, after base station issues semi-static RRC signaling, the RRC that need to receive UE feedback connects after having reshuffled signaling (RRC Connection Reconfiguration Complete) could determine that UE has correctly received semi-static RRC signaling, base station issue semi-static RRC signaling receives UE feedback RRC to base station connect reshuffled signaling during this period of time in, there is the fuzzy problem of scheduling in base station.

Have following problem in prior art: base station issue semi-static RRC signaling receives UE feedback RRC to base station connect reshuffled signaling during this period of time in, there is the fuzzy problem of scheduling in base station, thus the problem of the UE parse error caused.

Summary of the invention

The embodiment of the present invention provides a kind of PDCCH signaling method of sending and receiving, base station, UE and system, in order to solve in prior art due to the PDCCH signaling length that does not comprise CIF in the CSS of current carrier wave, comprise PDCCH signaling equal in length of CIF, the problem of the UE parse error caused with the UESS that is less than another carrier wave of current carrier wave on current carrier wave for dispatching other bandwidth.

The embodiment of the present invention provides a kind of PDCCH signaling method, comprising:

Determine the first search volume of UE and the position of the second search volume;

If do not comprise the length of the PDCCH signaling of carrier wave directive territory CIF in described the first search volume, comprise PDCCH signaling equal in length of CIF with described the second search volume, and there are the physics overlapping region in described the first search volume and the second search volume, in described physics overlapping region, only send and describedly do not comprise that the PDCCH signaling of CIF is to described UE.

The embodiment of the present invention also provides a kind of PDCCH signaling method, comprising:

If do not comprise the length of the PDCCH signaling of carrier wave directive territory CIF in described the first search volume, comprise PDCCH signaling equal in length of CIF with described the second search volume, and described the first search volume and the second search volume exist in the situation of physics overlapping region, in described physics overlapping region, after the radio resource control RRC connection reconfiguration that receives described UE transmission completes signaling, only to described UE, send the described PDCCH signaling that comprises CIF.

If the length of the PDCCH signaling in described the first search volume, equal in length with the 2nd PDCCH signaling in described the second search volume, a described PDCCH signaling is not for comprising the PDCCH signaling of carrier wave directive territory CIF, described the 2nd PDCCH signaling is the PDCCH signaling that comprises CIF, and there are the physics overlapping region in described the first search volume and the second search volume, in described physics overlapping region, connecting and reshuffling in the time interval of signaling to the RRC that receives described UE feedback to described UE transmission radio resource control RRC signaling, send the 3rd PDCCH signaling or the 4th PDCCH signaling to described UE, described the 3rd PDCCH signaling is not for comprising the PDCCH signaling of CIF, described the 4th PDCCH signaling is the PDCCH signaling that comprises CIF, and the signaling length of the signaling length of described the 3rd PDCCH signaling and described the 4th PDCCH signaling is unequal, the length of described the 3rd PDCCH signaling is different from the length of a described PDCCH signaling, the length of described the 4th PDCCH signaling is different from the length of a described PDCCH signaling.

The embodiment of the present invention also provides a kind of PDCCH signaling method of reseptance, comprising:

The length that does not comprise the PDCCH signaling of carrier wave directive territory CIF in the first search volume of user equipment (UE), comprise PDCCH signaling equal in length of CIF with the second search volume of described UE, and there are the physics overlapping region in described the first search volume and described the second search volume, in described physics overlapping region, receive the PDCCH signaling do not comprise CIF, and only according to the resolution rules to the PDCCH signaling that do not comprise CIF arranged, resolve the described PDCCH signaling that does not comprise CIF.

The length that does not comprise the PDCCH signaling of carrier wave directive territory CIF in the first search volume of user equipment (UE), comprise PDCCH signaling equal in length of CIF with the second search volume of described UE, and there are the physics overlapping region in described the first search volume and described the second search volume, in described physics overlapping region, after correctly having resolved at described UE the radio resource control RRC signaling that comes from base station, reception comprises the PDCCH signaling of CIF, and only according to the resolution rules to the PDCCH signaling that comprises CIF arranged, resolve the PDCCH signaling of the described CIF of comprising.

The embodiment of the present invention also provides a kind of base station, comprising:

The first determination module, for the first search volume of definite UE and the position of the second search volume;

The first sending module, after at described the first determination module, determining the position of the first search volume of UE and the second search volume, the PDCCH signaling length that does not comprise CIF in described the first search volume, the PDCCH signaling that comprises CIF with described the second search volume is equal in length, and described the first search volume and the second search volume exist in the situation of physics overlapping region, in described physics overlapping region, only send and do not comprise that the PDCCH signaling of CIF is to described UE.

The second determination module, for the first search volume of definite user equipment (UE) and the position of the second search volume;

The second sending module, after at described the first determination module, determining the position of the first search volume of described UE and the second search volume, if the length of the PDCCH signaling in described the first search volume, equal in length with the 2nd PDCCH signaling in described the second search volume, a described PDCCH signaling is not for comprising the PDCCH signaling of carrier wave directive territory CIF, described the 2nd PDCCH signaling is the PDCCH signaling that comprises CIF, and there are the physics overlapping region in described the first search volume and the second search volume, in described physics overlapping region, connecting and reshuffling in the time interval of signaling to the RRC that receives described UE feedback to described UE transmission radio resource control RRC signaling, send the 3rd PDCCH signaling or the 4th PDCCH signaling to described UE, described the 3rd PDCCH signaling is not for comprising the PDCCH signaling of CIF, described the 4th PDCCH signaling is the PDCCH signaling that comprises CIF, and the signaling length of the signaling length of described the 3rd PDCCH signaling and described the 4th PDCCH signaling is unequal, the length of described the 3rd PDCCH signaling is different from the length of a described PDCCH signaling, the length of described the 4th PDCCH signaling is different from the length of a described PDCCH signaling.

The 3rd determination module, for the first search volume of definite user equipment (UE) and the position of the second search volume;

The 3rd sending module, after at described the 3rd determination module, determining the position of the first search volume of user equipment (UE) and the second search volume, if do not comprise the length of the PDCCH signaling of carrier wave directive territory CIF in described the first search volume, comprise PDCCH signaling equal in length of CIF with described the second search volume, and described the first search volume and the second search volume exist in the situation of physics overlapping region, in described physics overlapping region, after the radio resource control RRC connection reconfiguration that receives described UE transmission completes signaling, only to described UE, send the described PDCCH signaling that comprises CIF.

The embodiment of the present invention also provides a kind of UE, comprising:

Receiver module, for do not comprise the PDCCH signaling length of CIF in the first search volume, the PDCCH signaling that comprises CIF with the second search volume is equal in length, and described the first search volume and the second search volume exist in the situation of physics overlapping region, in described physics overlapping region, receive the PDCCH signaling that does not comprise CIF that base station sends;

Parsing module, for only resolving according to the resolution rules to the PDCCH signaling that do not comprise CIF arranged the PDCCH signaling that described receiver module receives.

The embodiment of the present invention also provides a kind of UE, comprising:

The second receiver module, for do not comprise the length of the PDCCH signaling of carrier wave directive territory CIF in the first search volume of described UE, comprise PDCCH signaling equal in length of CIF with the second search volume of described UE, and described the first search volume and the second search volume exist in the situation of physics overlapping region, in described physics overlapping region, after correctly having resolved at described UE the radio resource control RRC configuration signal that comes from base station, receive the PDCCH signaling of the described CIF of comprising;

The second parsing module, for only resolving the PDCCH signaling of the described CIF of comprising that described receiver module receives according to the resolution rules to the PDCCH signaling that comprises CIF arranged.

The embodiment of the present invention also provides a kind of communication system, comprises foregoing base station and the foregoing UE that comprises receiver module and parsing module that comprises the first determination module and the first sending module.

The embodiment of the present invention also provides a kind of communication system, comprises UE and the foregoing base station that comprises the second determination module and the second sending module.

The PDCCH signaling method of sending and receiving, base station, UE and the system that by the embodiment of the present invention, provide, can avoid the scheduling of base station fuzzy, and UE is after receiving the PDCCH signaling, just can determine in the PDCCH signaling and comprise CIF or do not comprise CIF, thereby can avoid the parse error of UE.

The accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Figure 1 shows that the flow chart of an embodiment of PDCCH signaling method of the present invention;

Figure 2 shows that the flow chart of another embodiment of PDCCH signaling method of the present invention;

Figure 3 shows that the flow chart of another embodiment of PDCCH signaling method of the present invention;

Figure 4 shows that the flow chart of another embodiment of PDCCH signaling method of the present invention;

Figure 5 shows that the flow chart of an embodiment of PDCCH signaling method of reseptance of the present invention;

Figure 6 shows that the flow chart of another embodiment of PDCCH signaling method of reseptance of the present invention;

Figure 7 shows that the flow chart of another embodiment of PDCCH signaling method of reseptance of the present invention;

Figure 8 shows that the structural representation of an embodiment of base station of the present invention;

Figure 9 shows that the structural representation of another embodiment of base station of the present invention;

Figure 10 shows that the structural representation of UE embodiment of the present invention.

Embodiment

For the purpose, technical scheme and the advantage that make the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making under the creative work prerequisite the every other embodiment obtained, belong to the scope of protection of the invention.

In Long Term Evolution (Long Term Evolution is called for short LTE) system, base station (eNB) and UE carry out scheduling of resource on a carrier wave.The minimum time unit of base station scheduling resource is a subframe, length is 1 millisecond, the UE be scheduled in the search volume of PDCCH according to the signaling length of PDCCH and the control channel unit of search volume (Control Channel Element, abbreviation CCE) after rank is carried out the demodulation code to the PDCCH signaling, with Radio Network Temporary Identifier (the Radio Network Temporary Identifier of self, be called for short RNTI) descrambling cyclic redundancy check (CRC) (Cyclic Redundancy Check, be called for short CRC) carry out verification and determine current detection to the PDCCH signaling whether be the PDCCH signaling of oneself, after determining and being the PDCCH signaling of oneself, further do follow-up processing.Carried the time-frequency resource allocating information of indication physical data channel (physical data channel can be upstream or downstream) in the PDCCH signaling.

A search volume is a string set of continuous CCE in logic, and CCE is the minimum unit that forms the PDCCH signaling.The PDCCH signaling of UE can adopt four kinds of CCE grades to transmit, and is respectively 1,2,4 and 8, and different CCE grades have different code rates.The PDCCH signaling of different CCE grades has different search volumes, but physically, the search volume of different PDCCH signalings can be overlapping, in different search volumes, can comprise the CCE of part or all of same numeral.

Search volume can be divided into CSS and UESS, and CSS and UESS are different search volumes, but physically can be overlapping, in different search volumes, can comprise the CCE of part or all of same numeral.CSS is that all UE need the space of detecting, and CSS comprises 16 CCE, the PDCCH signaling that can only to transmit the CCE grade be 4 or 8, the searching times in the CSS corresponding with these two kinds of CCE grades be respectively 4 and 2(4*4=8*2=16).Each UE has a specific UESS, and each UESS determines by specific RNTI and subframe numbers, and the CCE grade that UESS can comprise is 1,2,4 and 8, and the searching times in the UESS corresponding with these four kinds of CCE grades is respectively 6,6,2 and 2.

The PDCCH signaling is according to the difference of the transmission means of data dispatching, resource distribution mode etc., have different DCI forms, for example comprise Downlink Control Information (Downlink Control Information, abbreviation DCI) form 0, DCI form 1A, DCI form 1B, DCI form 1C, DCI form 1D, DCI form 1, DCI form 2, DCI form 2A, DCI form 2, DCI form 3A etc., the length of the PDCCH signaling of different DCI forms is normally different, and on the PDCCH signaling, the RNTI of scrambling also can be different.

The PDCCH signaling of dispatching the public information of some multi-users can be placed in CSS to be transmitted, the RNTI of scrambling can be also the public RNTI of some multi-users, can be for example paging RNTI(Paging RNTI), system information RNTI(System Information RNTI), random access replys RNTI(RACH Response RNTI) and the relevant RNTI of transmission power control (Transmission Power Control is called for short TPC).

The PDCCH signaling of the specific RNTI scrambling of UE generally is placed in UESS and transmits, for example use semi-continuous scheduling-community-RNTI(Semi-Persistent Scheduling-Cell-RNTI, be called for short SPS-C-RNTI) or community RNTI(Cell-RNTI, be called for short C-RNTI) the PDCCH signaling of scrambling.

The PDCCH signaling of DCI form 1A can be transmitted in CSS, uses paging RNTI, system information RNTI or random access to reply the RNTI scrambling.The PDCCH signaling of DCI form 1A also can be transmitted in UESS, uses community RNTI or SPS-C-RNTI scrambling.

The length of the PDCCH signaling of DCI form 1A is identical with the length of the PDCCH signaling of DCI form 3, DCI form 3A and DCI form 0, and the Head Section of the PDCCH signaling of DCI form 1A and the PDCCH signaling of DCI form 0 divides bit to be used for distinguishing this two signalings.The PDCCH signaling of DCI form 1A and the PDCCH signaling of DCI form 0, with the PDCCH signaling of DCI form 3 and the PDCCH signaling of DCI form 3A, adopt different RNTI scramblings to show difference.

By the PDCCH signaling of the DCI form 1A of community RNTI scrambling and SPS-C-RNTI scrambling, can in UESS, transmit, also can in CSS, transmit, can't cause like this PDCCH signaling to detect number of times increases.The number of times that UE detects the PDCCH signaling is relevant with signaling length, and many a kind of signaling length, will how a series of detection number of times.Because the PDCCH signaling of the DCI form 3 transmitted in CSS or DCI form 3A always needs to be detected, and these two kinds of PDCCH signalings equal in length with the PDCCH signaling of DCI form 0 and DCI form 1A all, so the number of times that can't cause UE to detect the PDCCH signaling increases.

Base station can be according to the difference of data transfer mode, resource distribution mode etc., by semi-static RRC signaling, is a kind of in 7 kinds of transmission modes of UE configuration.Under every kind of transmission mode, UE needs to detect the PDCCH signaling of two kinds of DCI forms, a kind of PDCCH signaling of DCI form is relevant with the transmission mode for the current distribution of UE, the PDCCH signaling of another kind of DCI form is to follow as the irrelevant DCI form 1A of the transmission mode of the current distribution of UE and the PDCCH signaling of DCI form 0, that is to say, no matter what the transmission mode of distributing for UE is, UE needs to detect the PDCCH signaling of DCI form 1A and DCI form 0.For example, if being UE, base station distributed transmission mode 3, open loop multiple-input and multiple-output (Multiple Input Multiple Output is called for short MIMO) transmission mode, UE need to detect the PDCCH signaling of DCI form 2A, and UE also needs to detect the PDCCH signaling of DCI form 0 and DCI form 1A.Wherein, the PDCCH signaling of DCI form 2A is relevant to transmission mode 3.If being UE, base station distributed transmission mode 4, the closed-loop MIMO transmission mode, and UE need to detect the PDCCH signaling of DCI form 2, and UE also needs to detect the PDCCH signaling of DCI form 0 and DCI form 1A.Wherein, the PDCCH signaling of DCI form 2 is relevant to transmission mode 4.

Suppose a kind of scenario A: receive to base station that after base station sends the semi-static RRC signaling for notifying the current source scheduling mode of UE the RRC connection that UE returns reshuffled signaling during this period of time, and after base station receives RRC that UE returns and connects and reshuffled signaling, the length that does not comprise the PDCCH signaling of the DCI form 0 of CIF or DCI form 1A in the CSS of current carrier wave, likely with current carrier wave on be less than another carrier wave of current carrier wave for dispatching other bandwidth UESS comprise PDCCH signaling equal in length of the another kind of form of CIF, if there are the physics overlapping region in CSS and UESS, the PDCCH signaling that will cause UE to resolve mistakenly searching at the physics overlapping region is for dispatching the resource on current carrier wave, or be less than the resource of other carrier waves of current carrier wave for scheduling bandwidth.

For example, article one, signaling is not comprise in the CSS of current carrier wave CC1 that the PDCCH signaling of DCI form 0 or the 1A of CIF, another signaling are the PDCCH signalings that the upper UESS that is less than the carrier wave CC2 of carrier wave CC1 for dispatching other bandwidth of current carrier wave CC1 comprises the another kind of form of CIF.Because the bandwidth of the carrier wave CC2 be scheduled is less than the bandwidth of carrier wave CC1, resource allocation bit number required in the PDCCH signaling is just few, so, the length that does not comprise the PDCCH signaling of the DCI form 0 of CIF or 1A in the CSS of current carrier wave CC1, may comprise that the PDCCH signaling of another kind of form of CIF is equal in length with the upper UESS that is less than the carrier wave CC2 of carrier wave CC1 for dispatching other bandwidth of current carrier wave CC1.When there are the physics overlapping region in CSS and UESS, it is for the resource of scheduling carrier wave CC1 that UE may resolve the PDCCH signaling searched at the physics overlapping region mistakenly, or for the resource of scheduling carrier wave CC2.

Take downlink data as example, once UE resolves the PDCCH signaling mistakenly, will be on wrong carrier wave downlink data receiving, follow-up UE may not confirm (NACK) information to one of base station feedback, base station can resend original data, but UE is the uncertain PDCCH signaling of how correctly resolving still, UE still can not correctly receive data, retaining misdata in the buffer area of UE always, until base station reaches maximum retransmission, mixed automatic retransfer request (the Hybrid Automatic Repeat-reQuest that has so just caused UE, be called for short HARQ) the buffer memory pollution.

Below introduce in detail how solving the above problems of the embodiment of the present invention.In various embodiments of the present invention, can suppose, under this data resource scheduling mode of CCS, do not comprise CIF in the DCI form 1A transmitted or the PDCCH signaling of DCI form 0 in CSS, and the PDCCH signaling of this DCI form 1A or DCI form 0 is only to dispatch the resource on this PDCCH signaling current place carrier wave or the up-link carrier corresponding with this carrier wave.

Perhaps, also can suppose, under this source scheduling mode of CCS, in the PDCCH signaling of transmitting, not comprise CIF in certain UESS, and this PDCCH signaling is only to dispatch the resource on this signaling current place carrier wave or the up-link carrier corresponding with this carrier wave.

Be illustrated in figure 1 the flow chart of an embodiment of PDCCH signaling method of the present invention, comprise:

The position of the first search volume and the second search volume is determined in step 101, base station.The PDCCH signaling of transmitting in the first search volume can not comprise CIF, the first search volume can be CSS and or UESS, the signaling of transmitting in the second search volume can comprise CIF, the second search volume can be UESS.

If do not comprise the length of the PDCCH signaling of CIF in step 102 the first search volume, the PDCCH signaling that comprises CIF with the second search volume is equal in length, there are the physics overlapping region in the first search volume and the second search volume,, in the physics overlapping region, base station sends and does not comprise that the PDCCH signaling of CIF is to UE.

Can comprise resource allocation information and other control information in the PDCCH signaling that base station sends, for example, can comprise carrier activation or deexcitation information, can comprise for triggering the information of physical accidental access procedure.

Embodiment as shown in Figure 1 limits the overlapping region of two search volumes for transmitting one of them search volume PDCCH signaling, a kind of orthogonalized method in search volume in fact, can also adopt the method for a kind of search volume quadrature, make two search volumes not overlapping, thereby solve the scheduling fuzzy problem of the PDCCH signaling base station caused equal in length that length and the second search volume due to the PDCCH signaling that does not comprise CIF in the first search volume comprise CIF, if it is overlapping that for example physics occurs in CSS and UESS, can also not change the CCE size of CSS and UESS, and fixation of C SS invariant position, by a configuration parameter, make UESS and CSS not overlapping, particularly, can make UESS and CSS place continuously.

Be illustrated in figure 5 the flow chart of an embodiment of PDCCH signaling method of reseptance of the present invention, comprise:

If do not comprise the length of the PDCCH signaling of CIF in step 501 the first search volume, the PDCCH signaling that comprises CIF with the second search volume is equal in length, and there are the physics overlapping region in the first search volume and the second search volume,, in the physics overlapping region, UE receives the PDCCH signaling that does not comprise CIF that base station sends.

Step 502, according to the rule parsing PDCCH signaling arranged.The rule of this setting can the regulation base station and UE according to the implication according to making an appointment of each field in the PDCCH signaling, resolve.

If do not comprise CIF in the PDCCH signaling that base station sends, after UE receives the PDCCH signaling so, can resolve according to the resolution rules that does not comprise CIF in the PDCCH signaling.Which type of resolution rules UE specifically adopts, can be good by UE and base station as offered.

In the above embodiments, the length that does not comprise the PDCCH signaling of CIF in the first search volume, the PDCCH signaling that comprises CIF with the second search volume is equal in length, and the first search volume and the second search volume exist in the situation of physics overlapping region, require base station to send and do not comprise that the PDCCH signaling of CIF is to UE, like this, what send to UE is the PDCCH signaling that does not comprise CIF all the time, UE just can determine that the PDCCH signaling received at the physics overlapping region must be not comprise CIF, it is the resource on the carrier wave for carrying this PDCCH signaling that the resource of distributing in the PDCCH signaling is also determined, just can not cause the UE parse error yet.

For example, after sending the semi-static RRC signaling for notifying the current source scheduling mode of UE, base station receives that to base station the configure-ack that UE returns completes signaling during this period of time, and after the base station configure-ack that receives UE feedback completes signaling, if do not comprise the length of the PDCCH signaling of the DCI form 0 of CIF or DCI form 1A in UE for the CSS of the current carrier wave that carries the PDCCH signaling, with comprise PDCCH signaling equal in length of the another kind of form of CIF on current carrier wave for the UESS of this UE of dispatching another carrier wave that other bandwidth are less than current carrier wave, and there are the physics overlapping region in CSS and UESS, so, base station sends the PDCCH signaling that does not comprise CIF at the physics overlapping region, and carry the resource allocation information for UE in this signaling.In one embodiment, UE can be good with the base station as offered, all do not comprise CIF in the PDCCH signaling sent in the physics overlapping region.So, UE just can determine that this PDCCH signaling must be not comprise CIF after receiving the PDCCH signaling, and it is the resource on the carrier wave for carrying this PDCCH signaling that the resource of distributing in this PDCCH signaling is also determined, also just can not cause the UE parse error.

In embodiment as shown in Figure 1 and Figure 5, the first search volume can be CSS, and the second search volume is the particular UE SS of UE, and the CCE grade of the first search volume and the second search volume can be 4 or 8.Perhaps, the first search volume and the second search volume comprise two UESS of the different members carrier wave for dispatching UE.

In embodiment as shown in Figure 1, if the first search volume is CSS, the second search volume is UESS, to the second search volume restriction, not very large, because in the second search volume, even 4 or the PDCCH signaling length of 8CCE grade and the PDCCH signaling that does not add CIF in CSS equal in length and cause and can't dispatch this PDCCH signaling at the physics overlapping region, but this PDCCH signaling that base station can also be 1 or 2 in physics overlapping region transmission CCE grade.Even equal in length the causing at the physics overlapping region of the PDCCH signaling that does not add CIF in the PDCCH signaling length that the CCE grade is 4 and CSS can't be dispatched this PDCCH, if, but the search volume that the CCE grade is 8 is not overlapping with CSS, this PDCCH signaling that the CCE grade is 8 is also likely dispatched in base station.

In the above embodiments, base station issue the RRC signaling receives UE feedback RRC to base station connect reshuffled signaling during this period of time in, base station can know clearly user terminal according to which kind of mode is received, thereby has solved the control signal that the causes base station emission problem at UE side parse error.

In addition, retained whole scheduling degrees of freedom of the first search volume fully, the first search volume has not been produced to any scheduling restriction, therefore the maximized fuzzy problem of scheduling that has solved base station during RRC reshuffles.

Be illustrated in figure 2 the flow chart of another embodiment of PDCCH signaling method of the present invention, comprise:

The position of the first search volume and the second search volume is determined in step 201, base station.

Step 202, if the length of the PDCCH signaling in described the first search volume, equal in length with the 2nd PDCCH signaling in described the second search volume, a described PDCCH signaling is not for comprising the PDCCH signaling of carrier wave directive territory CIF, described the 2nd PDCCH signaling is the PDCCH signaling that comprises CIF, and there are the physics overlapping region in described the first search volume and the second search volume, in described physics overlapping region, connecting and reshuffling in the time interval of signaling to the RRC that receives described UE feedback to described UE transmission radio resource control RRC signaling, send the 3rd PDCCH signaling or the 4th PDCCH signaling to described UE, described the 3rd PDCCH signaling is not for comprising the PDCCH signaling of CIF, described the 4th PDCCH signaling is the PDCCH signaling that comprises CIF, and the signaling length of the signaling length of described the 3rd PDCCH signaling and described the 4th PDCCH signaling is unequal, the length of described the 3rd PDCCH signaling is different from the length of a described PDCCH signaling, the length of described the 4th PDCCH signaling is different from the length of a described PDCCH signaling.After base station receives RRC that UE returns and connects and reshuffled signaling, base station sends described the 2nd PDCCH signaling, comprises that the PDCCH signaling of CIF is to UE.Above-mentioned the 3rd PDCCH signaling or the 4th PDCCH signaling can be the PDCCH signaling of other kinds except a PDCCH signaling and the 2nd PDCCH signaling, the PDCCH signaling of other kinds except a PDCCH signaling and the 2nd PDCCH signaling that base station described above sends is that base station knows the PDCCH signaling that can not resolved mistakenly by UE.For example, the PDCCH signaling that two kinds of forms are arranged under current every kind of transmission mode, two kinds of PDCCH signalings (adding CIF) for the carrier wave by across carrier dispatching under corresponding certain transmission mode, the PDCCH signaling of certain form of supposing not add in the CSS of wherein a kind of and PDCCH place carrier wave CIF is equal in length, eNB can send another the PDCCH signaling under present mode, its signaling length is not equal to the PDCCH signaling length that does not add certain form of CIF in the CSS of PDCCH place carrier wave, this PDCCH signaling of parsing that now UE can be wrong.Perhaps, may also have two kinds of specific PDCCH signalings of UE that do not add CIF in the CSS of PDCCH place carrier wave, wherein a kind of may be by the parsing of UE mistake, base station can send and another kind ofly not add the PDCCH signaling of CIF to UE.

Be illustrated in figure 6 the flow chart of another embodiment of PDCCH signaling method of reseptance of the present invention, comprise:

If do not comprise the length of the PDCCH signaling of CIF in step 601 the first search volume, the PDCCH signaling that comprises CIF with the second search volume is equal in length, and there are the physics overlapping region in the first search volume and the second search volume, in the physics overlapping region, after UE correctly resolves the RRC signaling, UE receives the PDCCH signaling that comprises CIF that base station sends.

Step 602, UE are only resolved the PDCCH signaling of the described CIF of comprising according to the resolution rules to the PDCCH signaling that comprises CIF arranged.

If the PDCCH signaling that base station sends comprises CIF, after UE receives the PDCCH signaling so, can comprise that the resolution rules of CIF resolves according to the PDCCH signaling.Which type of resolution rules UE specifically adopts, can be good by UE and base station as offered.

In the above embodiments, the length that does not comprise the PDCCH signaling of CIF in the first search volume, the PDCCH signaling that comprises CIF with the second search volume is equal in length, and the first search volume and the second search volume exist in the situation of physics overlapping region, send the RRC signaling within the time interval of the confirmation signaling that receives the UE feedback in base station, base station cannot send the PDCCH signaling of the above-mentioned CIF of comprising, because UE may not receive correct RRC configuration signal, UE can think that the PDCCH signaling received does not comprise CIF so, thereby causes parse error.So base station receives configure-ack that UE returns complete signaling after, can send the PDCCH signaling of the above-mentioned CIF of comprising to UE; But send the RRC signaling within the time interval of the confirmation signaling that receives the UE feedback in base station, base station only with transmission the PDCCH signaling of other kinds except a PDCCH signaling and the 2nd PDCCH signaling to UE.And, for the UE side, after UE correctly resolves the RRC configuration signal, UE receives only the PDCCH signaling that comprises CIF that above-mentioned base station sends.

In embodiment as shown in Figure 2, the first search volume can be CSS, and the second search volume is the particular UE SS of UE, and the CCE grade of the first search volume and the second search volume is 4 or 8.Perhaps, the first search volume and the second search volume comprise two UESS of the different members carrier wave for dispatching UE.

If the first search volume is CSS, the second search volume is UESS, adopts the method in embodiment as shown in Figure 2, can not increase the detection number of times of the PDCCH signaling of the first search volume.In addition, large (because the second search volume can be realized across carrier dispatching due to the scheduling degree of freedom of the second search volume than the first search volume, and the first search volume only allows same carrier dispatching), therefore this programme has retained whole scheduling degrees of freedom of the second search volume fully, the second search volume is not produced to any scheduling restriction.

Be illustrated in figure 3 the flow chart of another embodiment of PDCCH signaling method of the present invention, comprise:

The position of the first search volume and the second search volume is determined in step 301, base station.

Step 302, if the length of the PDCCH signaling in the first search volume, equal in length with the 2nd PDCCH signaling in the second search volume, a described PDCCH signaling is not for comprising the PDCCH signaling of carrier wave directive territory CIF, described the 2nd PDCCH signaling is the PDCCH signaling that comprises CIF, there are the physics overlapping region in the first search volume and the second search volume, in described physics overlapping region, send the RRC signaling within the time interval of the confirmation signaling that receives the UE feedback in base station, base station sends the PDCCH signaling of other kinds except a PDCCH signaling and the 2nd PDCCH signaling to UE.

The PDCCH signaling of above-mentioned other kinds except a PDCCH signaling and the 2nd PDCCH signaling can be the 3rd PDCCH signaling or the 4th PDCCH signaling, described the 3rd PDCCH signaling is not for comprising the PDCCH signaling of CIF, described the 4th PDCCH signaling is the PDCCH signaling that comprises CIF, and the signaling length of the signaling length of described the 3rd PDCCH signaling and described the 4th PDCCH signaling is unequal.

Embodiment as shown in Figure 3, can solve the problem existed in following scenario B.

For example, a scenario B: if dispatch the PDCCH signaling of two carrier waves, on a carrier wave, independently UESS is arranged separately, and when these two UESS have the physical overlap zone, after base station sends the semi-static RRC signaling for notifying the current source scheduling mode of UE, to base station, receive configure-ack that UE returns complete signaling during this period of time in, also can have the problem that base station scheduling is fuzzy.For example, before sending, the source scheduling mode of UE is SCS, in the PDCCH signaling of base-station transmission to UE, does not comprise CIF.After UE receives the semi-static RRC signaling for notifying the current source scheduling mode of UE, the source scheduling mode of UE becomes CCS.And base station do not receive the configure-ack of UE feedback complete signaling during this period of time in, whether need to comprise CIF in the PDCCH signaling of the uncertain UE of sending in base station, so just caused the scheduling of base station fuzzy.And the RRC configuration signal that has correctly received base station as UE has been switched to the CCS pattern, the PDCCH dispatched in above-mentioned two UESS can add CIF, can automatic distinguishing the PDCCH signaling of scheduling different carrier, even the signaling of two PDCCH that CIF arranged is equal in length, can not produce the problems referred to above yet.

For this situation of scenario B, can not send semi-static RRC signaling within the time interval that receives the confirmation signaling that UE returns by the restriction base station, only a transmission comprises the PDCCH signaling of CIF or does not comprise that the PDCCH signaling of CIF solves.If the restriction base station completes in the time interval of confirmation letter order to the configuration that receives the UE feedback in the semi-static RRC signaling of transmission, only send the PDCCH signaling that does not comprise CIF, and UE has correctly resolved semi-static RRC signaling, UE can think that the PDCCH signaling received comprises CIF, thereby causes the UE parse error.If the restriction base station connects and has reshuffled in the time interval of signaling to the RRC that receives the UE feedback in the semi-static RRC signaling of transmission, only send the PDCCH signaling that comprises CIF, and UE does not correctly resolve semi-static RRC signaling, UE can think that the PDCCH signaling received does not comprise CIF so, thereby causes the UE parse error.

If adopt embodiment as shown in Figure 3, base station sends the PDCCH signaling of other kinds except a PDCCH signaling and the 2nd PDCCH signaling at the physics overlapping region, so just can avoid the scheduling of base station fuzzy, also can avoid the parse error of UE.

After the RRC that receives UE feedback in base station connects and has reshuffled signaling, the source scheduling mode of UE becomes CCS, even there is the physics overlapping region in two UESS of UE, owing in the PDCCH signaling under the CCS pattern, all comprising CIF, can there be the fuzzy problem of scheduling in base station yet, and UE parse error can not occur yet.

In embodiment as shown in Figure 3, the first search volume and described the second search volume comprise two UESS of the different members carrier wave for dispatching UE.

Adopt the method in embodiment as shown in Figure 3, the method realized by base station self has solved the problem of UE error resolution PDCCH, and without any behavior of regulation UE, that is to say that operation on UE is without any impact, and method is simple, easy and simple to handle.

In one embodiment, two member carrier CC1 of a UE and CC2, the PDCCH signaling is placed on the upper transmission of CC1, CC1 comprises search volume CSS, search volume UESS1 and search volume UESS2, PDCCH signaling in CSS on CC1 is for dispatching this member carrier CC1, and this PDCCH signaling does not comprise CIF, PDCCH signaling in the upper UESS1 of CC1 is for dispatching this member carrier CC1, and this PDCCH signaling does not comprise CIF, PDCCH signaling in UESS2 on CC1 is used for across carrier dispatching CC2, and this PDCCH signaling comprises CIF.

In one case, the length that does not comprise the PDCCH signaling of CIF in UESS1, comprise PDCCH signaling equal in length of CIF with UESS2, and UESS1 and UESS2 are while existing the physics overlapping region, in this physics overlapping region, base station sends and does not comprise that the PDCCH signaling of CIF is to UE; And the length that does not comprise the PDCCH signaling of CIF in CSS, comprise PDCCH signaling equal in length of CIF with UESS2, and when there are the physics overlapping region in CSS and UESS2, in this physics overlapping region, base station sends and comprises that the PDCCH signaling of CIF is to UE, in UESS1, do not comprise the length of the PDCCH signaling of CIF, UESS2 comprises the length of the PDCCH signaling of CIF, with the length three of the PDCCH signaling that does not comprise CIF in UESS1, equate, in common overlapping region, there is the fuzzy problem of scheduling the three.

Perhaps,

The length that does not comprise the PDCCH signaling of CIF in UESS1, comprise PDCCH signaling equal in length of CIF with UESS2, and UESS1 and UESS2 be while existing the physics overlapping region, and in the physics overlapping region, base station sends and comprises that the PDCCH signaling of CIF is to UE; And the length that does not comprise the PDCCH signaling of CIF in CSS, comprise PDCCH signaling equal in length of CIF with UESS2, and when there are the physics overlapping region in CSS and UESS2, in the physics overlapping region, base station sends and does not comprise that the PDCCH signaling of CIF is to UE, in UESS1, do not comprise the length of the PDCCH signaling of CIF, UESS2 comprises the length of the PDCCH signaling of CIF, with the length three of the PDCCH signaling that does not comprise CIF in UESS1, equate, in common overlapping region, there is the fuzzy problem of scheduling the three.

Based on above-mentioned situation, in one embodiment, at above-mentioned three's overlapping region, base station only send do not comprise CIF the PDCCH signaling to UE; Perhaps base station only send comprise CIF the PDCCH signaling to UE.

If in three's overlapping region, base station only send do not comprise CIF the PDCCH signaling to UE, data can priority scheduling on the carrier wave CC1 that places the PDCCH channel, guaranteed the dispatching priority of this carrier wave, guaranteed RRC reshuffle during the seamlessly transitting of scheduling;

If in three's overlapping region, base station only send comprise CIF the PDCCH signaling to UE, guaranteed by the scheduling degree of freedom of the UESS of the carrier wave CC2 across carrier dispatching.

A kind of physical downlink control channel PDCCH signaling method comprises:

Determine the position of the first search volume, the second search volume and the 3rd search volume of user equipment (UE);

If do not comprise the PDCCH signaling length of carrier wave directive territory CIF in described the first search volume, comprise that with the PDCCH signaling length that does not comprise CIF in the 3rd search volume and described the second search volume the PDCCH signaling of CIF is equal in length, and there are the physics overlapping region in described the first search volume, the second search volume and the 3rd search volume,, in described physics overlapping region, only send and comprise the PDCCH signaling of CIF or only send and do not comprise that the PDCCH signaling of CIF is to described UE.

A kind of physical downlink control channel PDCCH signaling method of reseptance comprises:

If do not comprise the PDCCH signaling length of carrier wave directive territory CIF in described the first search volume, comprise that with the PDCCH signaling length that does not comprise CIF in the 3rd search volume and described the second search volume the PDCCH signaling of CIF is equal in length, and there are the physics overlapping region in described the first search volume, the second search volume and the 3rd search volume, in described physics overlapping region, receive the PDCCH signaling that comprises CIF that base station sends or the PDCCH signaling that does not comprise CIF;

Described UE is according to the described PDCCH signaling of rule parsing arranged.

A kind of base station comprises:

The 6th determination module, for the position of the first search volume, the second search volume and the 3rd search volume of determining user equipment (UE);

The 6th sending module, if do not comprise the PDCCH signaling length of carrier wave directive territory CIF for described the first search volume, comprise that with the PDCCH signaling length that does not comprise CIF in the 3rd search volume and described the second search volume the PDCCH signaling of CIF is equal in length, and there are the physics overlapping region in described the first search volume, the second search volume and the 3rd search volume,, in described physics overlapping region, only send and comprise the PDCCH signaling of CIF or only send and do not comprise that the PDCCH signaling of CIF is to described UE.

A kind of user equipment (UE) comprises:

The 7th receiver module, if do not comprise the PDCCH signaling length of carrier wave directive territory CIF for described the first search volume, comprise that with the PDCCH signaling length that does not comprise CIF in the 3rd search volume and described the second search volume the PDCCH signaling of CIF is equal in length, and there are the physics overlapping region in described the first search volume, the second search volume and the 3rd search volume, in described physics overlapping region, receive the PDCCH signaling that comprises CIF that base station sends or the PDCCH signaling that does not comprise CIF;

The 7th parsing module, the described PDCCH signaling of rule parsing for described UE according to setting.

Be illustrated in figure 4 the flow chart of another embodiment of PDCCH signaling method of the present invention, comprise:

The position of the first search volume and the second search volume is determined in step 401, base station.

If do not comprise the length of the PDCCH signaling of CIF in step 402 the first search volume, comprise PDCCH signaling equal in length of CIF with the second search volume, there are the physics overlapping region in the first search volume and the second search volume, in the physics overlapping region, base station sends the PDCCH signaling that comprises CIF after having increased a bit to UE at the physics overlapping region.

In this embodiment, the length that does not comprise the PDCCH signaling of CIF in the first search volume, the PDCCH signaling that comprises CIF with the second search volume is equal in length, and the first search volume and the second search volume exist in the situation of physics overlapping region, require base station to send the PDCCH signaling that comprises CIF after having increased a bit at the physics overlapping region.The PDCCH signaling that comprises CIF received due to UE than the length of the PDCCH signaling that does not comprise CIF many a bit, UE just can determine, the PDCCH signaling that signaling length is longer comprises CIF, also just can avoid the parse error of UE.

For example, after sending the semi-static RRC signaling for notifying the current source scheduling mode of UE, base station receives to base station that the RRC connection of UE feedback reshuffled signaling during this period of time, and after the base station RRC that receives UE feedback connects and reshuffled signaling, if do not comprise the length of the PDCCH signaling of the DCI form 0 of CIF or DCI form 1A in UE for the CSS of the current carrier wave that carries the PDCCH signaling, with comprise PDCCH signaling equal in length of the another kind of form of CIF on current carrier wave for the UESS of this UE of dispatching another carrier wave that other bandwidth are less than current carrier wave, and there are physics overlapping region (only limiting to 4 or 8 these two kinds of CCE ranks) in CSS and UESS, so, base station sends PDCCH signaling under the CSS pattern that comprises CIF after having increased a bit to UE at the physics overlapping region.UE just can determine that the PDCCH signaling received comprises CIF, has avoided the parse error of UE like this.

Suppose that the first search volume is CSS, the second search volume is UESS, adopt the method in embodiment as shown in Figure 4, bit padding only can occur in the length of the PDCCH signaling that does not comprise CIF in CSS, the PDCCH signaling that comprises CIF with UESS is equal in length, there are the physics overlapping region in CSS and UESS, and for the CCE grade, be only 4 or 8 o'clock, and expense is little, can not affect the length of the PDCCH signaling that does not comprise CIF in CSS yet, can guarantee not comprise in CSS CIF the PDCCH signaling can with the LTE system in the form of PDCCH signaling compatible mutually.

Because the search volume of different CCE grades is can physics overlapping, different CCE grades are corresponding the different rates coupling of chnnel coding again, so when the PDCCH signaling length after filling bit equals some length-specific, can cause the PDCCH signaling of different CCE grades all to pass through the verification of the C-RNTI of UE, all can be resolved to by UE the PDCCH signaling of oneself, but the PDCCH signaling that base station sends can only be one of them CCE grade, therefore the situation of the parsing PDCCH signaling of UE mistake can occur.Therefore, if filled PDCCH signaling length after a bit in the embodiment of the present invention when equaling the above-mentioned PDCCH signaling that causes different CCE grades and all passing through the signaling length of C-RNTI verification of UE, also to recharge a bit and avoid this situation.

Be illustrated in figure 7 the flow chart of another embodiment of PDCCH signaling method of reseptance of the present invention, comprise:

If do not comprise the PDCCH signaling length of CIF in step 701 the first search volume, the PDCCH signaling that comprises CIF with the second search volume is equal in length, and there are the physics overlapping region in the first search volume and the second search volume, in the physics overlapping region, the PDCCH signaling that comprises CIF after UE has received increase that base station sends bit.

Step 702, according to this PDCCH signaling of rule parsing arranged.

If PDCCH signaling that base station sends is the PDCCH signaling that comprises CIF increased after a bit, after UE receives the PDCCH signaling so, the resolution rules that can comprise CIF and increase a bit according to the PDCCH signaling is resolved.Which type of resolution rules UE specifically adopts, can be good by UE and base station as offered.

In one embodiment, the first search volume of user equipment (UE) and the position of the second search volume can be determined in base station, if do not comprise the length of the PDCCH signaling of carrier wave directive territory CIF in described the first search volume, comprise PDCCH signaling equal in length of CIF with described the second search volume, and described the first search volume and the second search volume exist in the situation of overlapping region, in described overlapping region, after the radio resource control RRC connection reconfiguration that receives described UE transmission completes signaling, only to described UE, send the described PDCCH signaling that comprises CIF,

Described the first search volume is public search space CSS, the specific search volume UESS of the subscriber equipment that described the second search volume is described UE.

In one embodiment, if do not comprise the length of the PDCCH signaling of CIF in the first search volume, comprise PDCCH signaling equal in length of CIF with the second search volume, and there are the physics overlapping region in the first search volume and the second search volume, the PDCCH signaling that does not comprise CIF in above-mentioned the first search volume is the first signaling, above-mentioned the second search volume comprises that the PDCCH signaling of CIF is the second signaling, in the physics overlapping region, existing or bit or state redundancy or filling that can be fixing by absolute position in the PDCCH of described the first signaling and the second signaling be distinguished described the first signaling and the second signaling.Described absolute position is fixed, and refers to that this field is the definite field of precedence in this PDCCH, such as being last bit except the CRC bit.

Specifically with in the FDD system, the up-downgoing carrier bandwidths equates that DCI form 0 and the 1A under scene is example, last bit except the CRC bit of DCI form 1A is a bit of power command field, last bit except the CRC bit of DCI form 0 is a filling bit, is defaulted as filling " 0 ".In the time of can stipulating described last bit for " 0 ", represent that this PDCCH is described the first signaling, during for " 1 ", represent that this PDCCH is described the second signaling.And if described last bit had certain indication implication originally, this bit is nonredundancy or filling bit or state, can limit the parsing of this field, perhaps by other field in PDCCH, mean the implication of this bit, such as can with the PDCCH of dispatching downlink data in the power control field exchange implication.

In one embodiment, support in the system of carrier aggregation, upstream control signaling (comprises uplink ACK/NACK, up channel state information etc.) all on the specific up-link carrier of UE, feed back, this up-link carrier is called up main carrier, the descending carrier paired with it is called downlink main carrier to carry, and other descending carrier of this UE is called descending non-main carrier.A kind of method that the power of ascending control channel is controlled is to control by the power control command word section of two bits of the PDCCH for the dispatching downlink data, because the ascending control channel of all descending carriers of corresponding certain UE all only feeds back on up main carrier, therefore the power that only needs power control command word section in the PDCCH of dispatching downlink main carrier to do ascending control channel is controlled and is got final product, power control command word section in the PDCCH of the non-main carrier of dispatching downlink is with regard to redundancy, can be so that this redundant field means the implication that the fixing field itself in absolute position of described the first signaling of above-mentioned differentiation and the second signaling has, UE can be fixing by this absolute position field distinguish above-mentioned the first signaling and the second signaling, and can obtain the implication that the fixing field in this absolute position will mean by resolving this redundant field.

Be illustrated in figure 8 the structural representation of an embodiment of base station of the present invention, this base station 1 comprises: the first determination module 11 and the first sending module 12.Wherein, the first determination module 11 is for determining the position of the first search volume and the second search volume.The first sending module 12, for do not comprise the PDCCH signaling length of CIF in the first search volume, the PDCCH signaling that comprises CIF with the second search volume is equal in length, and the first search volume and the second search volume exist in the situation of physics overlapping region, in the physics overlapping region, only send and describedly do not comprise that the PDCCH signaling of CIF is to UE, perhaps, if a PDCCH signaling is the PDCCH signaling that does not comprise CIF in the first search volume, the 2nd PDCCH signaling is the PDCCH signaling that the second search volume comprises CIF, send and increased the bit PDCCH signaling that comprises CIF afterwards to UE.Perhaps, in base station, send the RRC signaling within the time interval of the confirmation signaling that receives the UE feedback, base station sends the PDCCH signaling of other kinds except a PDCCH signaling and the 2nd PDCCH signaling to UE; After base station receives configure-ack that UE returns and completes signaling, base station only send comprise CIF the PDCCH signaling to UE.

In one embodiment, a kind of base station can comprise:

Above-mentioned the first search volume is public search space CSS, the specific search volume UESS of the subscriber equipment that described the second search volume is described UE.

Be illustrated in figure 9 the structural representation of another embodiment of base station of the present invention, this base station 1 comprises: the second determination module 13 and the second sending module 14.Wherein, the second determination module 13 is for determining the position of the first search volume and the second search volume.The second sending module 14, determine the position of the first search volume of described UE and the second search volume at described the second determination module after, if the length of the PDCCH signaling in described the first search volume, equal in length with the 2nd PDCCH signaling in described the second search volume, a described PDCCH signaling is not for comprising the PDCCH signaling of carrier wave directive territory CIF, described the 2nd PDCCH signaling is the PDCCH signaling that comprises CIF, and there are the physics overlapping region in described the first search volume and the second search volume, in described physics overlapping region, connecting and reshuffling in the time interval of signaling to the RRC that receives described UE feedback to described UE transmission radio resource control RRC signaling, send the 3rd PDCCH signaling or the 4th PDCCH signaling to described UE, described the 3rd PDCCH signaling is not for comprising the PDCCH signaling of CIF, described the 4th PDCCH signaling is the PDCCH signaling that comprises CIF, and the signaling length of the signaling length of described the 3rd PDCCH signaling and described the 4th PDCCH signaling is unequal, the length of described the 3rd PDCCH signaling is different from the length of a described PDCCH signaling, the length of described the 4th PDCCH signaling is different from the length of a described PDCCH signaling.

In embodiment shown in Fig. 9, the first search volume and the second search volume comprise two UESS of the different members carrier wave for dispatching UE.

Be the structural representation of UE embodiment of the present invention as shown in figure 10, this UE2 comprises receiver module 21 and parsing module 22.Receiver module 21, for do not comprise the PDCCH signaling length of CIF in the first search volume, the PDCCH signaling that comprises CIF with the second search volume is equal in length, and the first search volume and the second search volume exist in the situation of physics overlapping region, in the physics overlapping region, receive the PDCCH signaling that does not comprise CIF that base station sends, or, the PDCCH signaling that comprises CIF after received increase that base station sends bit.Parsing module 22 is for only resolving according to the resolution rules to the PDCCH signaling that do not comprise CIF arranged the PDCCH signaling that receiver module 21 receives.Perhaps, after UE correctly resolves the RRC signaling, UE receives only the PDCCH signaling that comprises CIF that above-mentioned base station sends.

In one embodiment, user equipment (UE) can also comprise:

The second receiver module, for do not comprise the length of the PDCCH signaling of carrier wave directive territory CIF in the first search volume of described UE, comprise PDCCH signaling equal in length of CIF with the second search volume of described UE, and described the first search volume and the second search volume exist in the situation of physics overlapping region, in described physics overlapping region, after correctly having resolved at described UE the radio resource control RRC signaling that comes from base station, receive the PDCCH signaling of the described CIF of comprising;

The embodiment of the present invention also provides a kind of communication system, can comprise base station as shown in Figure 8 and UE as shown in figure 10, base station adopts the method described in preceding method embodiment to send the PDCCH signaling to UE, and UE adopts the method described in preceding method embodiment to receive the PDCCH signaling that base station sends.

The present invention also provides a kind of communication system, can comprise UE and UE as shown in Figure 9, and base station adopts the method described in preceding method embodiment to send the PDCCH signaling to UE, and UE can receive the PDCCH signaling that base station sends according to existing method.

The base station that the embodiment of the present invention provides and UE, if do not comprise the length of the PDCCH signaling of CIF in the first search volume, the PDCCH signaling that comprises CIF with the second search volume is equal in length, there are the physics overlapping region in the first search volume and the second search volume, limit base station and send and do not comprise that the PDCCH signaling of CIF is to UE at the physics overlapping region.

Perhaps, in base station, send the RRC signaling within the time interval of the confirmation signaling that receives the UE feedback, base station sends the PDCCH signaling of other kinds except a PDCCH signaling and the 2nd PDCCH signaling to UE; After base station receives configure-ack that UE returns and completes signaling, base station sends and comprises that the PDCCH signaling of CIF is to UE.

Perhaps, if do not comprise the length of signaling of the PDCCH signaling of CIF in the first search volume, comprise signaling equal in length of the 2nd PDCCH signaling of CIF with the second search volume, and there are the physics overlapping region in the first search volume and the second search volume, in the physics overlapping region, send semi-static RRC signaling connects and has reshuffled in the time interval of signaling to the RRC that receives the UE feedback in base station, base station sends the PDCCH signaling of other kinds except a PDCCH signaling and the 2nd PDCCH signaling to UE, so just can avoid the scheduling of base station fuzzy, thereby avoid the parse error of UE.

In one embodiment, the position of the first search volume and the second search volume is determined in base station, if do not comprise the length of the PDCCH signaling of CIF in the first search volume, the PDCCH signaling that comprises CIF with the second search volume is equal in length, there are the physics overlapping region in the first search volume and the second search volume,, in the physics overlapping region, base station sends and comprises that the PDCCH signaling of CIF is to UE.

If do not comprise the length of the PDCCH signaling of CIF in the first search volume, the PDCCH signaling that comprises CIF with the second search volume is equal in length, and there are the physics overlapping region in the first search volume and the second search volume, in the physics overlapping region, UE receives the PDCCH signaling that comprises CIF that base station sends, according to the rule parsing PDCCH signaling arranged.

In the above embodiments, the length that does not comprise the PDCCH signaling of CIF in the first search volume, the PDCCH signaling that comprises CIF with the second search volume is equal in length, and the first search volume and the second search volume exist in the situation of physics overlapping region, require base station to send and comprise that the PDCCH signaling of CIF is to UE, like this, what send to UE is the PDCCH signaling that comprises CIF all the time, UE just can determine that the PDCCH signaling received at overlapping region must comprise CIF, it is the resource on the carrier wave for carrying this PDCCH signaling that the resource of distributing in the PDCCH signaling is also determined, just can not cause the UE parse error yet.

For example, after sending the semi-static RRC signaling for notifying the current source scheduling mode of UE, base station receives that to base station the configure-ack that UE returns completes signaling during this period of time, and after base station receives configure-ack that UE returns and completes signaling, if do not comprise the length of the PDCCH signaling of the DCI form 0 of CIF or DCI form 1A in UE for the CSS of the current carrier wave that carries the PDCCH signaling, with comprise PDCCH signaling equal in length of the another kind of form of CIF on current carrier wave for the UESS of this UE of dispatching another carrier wave that other bandwidth are less than current carrier wave, and there are the physics overlapping region in CSS and UESS, so, base station sends the PDCCH signaling that comprises CIF at the physics overlapping region, and carry the resource allocation information for UE in this signaling.In one embodiment, UE can be good with the base station as offered, in the PDCCH signaling sent in the physics overlapping region, includes CIF.So, UE just can determine that this PDCCH signaling must comprise CIF after receiving the PDCCH signaling, according to the CIF in this PDCCH signaling, can determine that the resource of distribution is the resource on which carrier wave, also just can not cause the UE parse error.

The first search volume can be CSS, and the second search volume is the particular UE SS of UE, and the CCE grade of the first search volume and the second search volume is 4 or 8.Perhaps, the first search volume and the second search volume comprise two UESS of the different members carrier wave for dispatching UE.

In one embodiment, provide ，Gai base station, a kind of base station to comprise:

The 4th determination module, for the first search volume of definite user equipment (UE) and the position of the second search volume;

The 4th sending module, after at described the first determination module, determining the position of the first search volume of UE and the second search volume, the PDCCH signaling length that does not comprise carrier wave directive territory CIF in described the first search volume, the PDCCH signaling that comprises CIF with described the second search volume is equal in length, and described the first search volume and the second search volume exist in the situation of physics overlapping region, in described physics overlapping region, send the PDCCH signaling that comprises CIF and do not comprise that to described UE or transmission the PDCCH signaling of CIF is to described UE.

In one embodiment, provide a kind of user equipment (UE), comprising:

The 4th receiver module, for do not comprise the PDCCH signaling length of carrier wave directive territory CIF in the first search volume, the PDCCH signaling that comprises CIF with the second search volume is equal in length, and described the first search volume and the second search volume exist in the situation of physics overlapping region, in described physics overlapping region, receive the PDCCH signaling that comprises CIF of base station transmission or receive the PDCCH signaling that does not comprise CIF that base station sends;

The 4th parsing module, the PDCCH signaling received for the described receiver module of rule parsing according to arranging.

One of ordinary skill in the art will appreciate that: realize that the hardware that all or part of step of said method embodiment can be relevant by program command completes, aforesaid program can be stored in a computer read/write memory medium, this program, when carrying out, is carried out the step that comprises said method embodiment; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CDs.

Finally it should be noted that: above embodiment only, in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment, the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: its technical scheme that still can put down in writing aforementioned each embodiment is modified, or part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.

Claims

1. a physical downlink control channel PDCCH signaling method, is characterized in that, comprising:

The first search volume of user equipment (UE) and the position of the second search volume are determined in base station;

If do not comprise the length of the PDCCH signaling of carrier wave directive territory CIF in described the first search volume, comprise PDCCH signaling equal in length of CIF with described the second search volume, and there are the physics overlapping region in described the first search volume and the second search volume,, in described physics overlapping region, the base station transmission is described does not comprise that the PDCCH signaling of CIF is to described UE;

2. method according to claim 1, is characterized in that, the control channel unit CCE grade of the PDCCH signaling of transmitting in described the first search volume and described the second search volume is 4 or 8.

3. method according to claim 1, is characterized in that, described the first search volume and described the second search volume comprise two UESS of the different members carrier wave for dispatching described UE.

4. method according to claim 1, is characterized in that, there are the physics overlapping region in described the first search volume and the second search volume, comprising:

Described the first search volume and the second search volume comprise the CCE of at least one same numeral, and the CCE of described at least one same numeral is described physics overlapping region.

5. a device, is characterized in that, comprising:

Module for the position of the first search volume of determining user equipment (UE) and the second search volume;

If do not comprise the length of the PDCCH signaling of carrier wave directive territory CIF for described the first search volume, comprise PDCCH signaling equal in length of CIF with described the second search volume, and there are the physics overlapping region in described the first search volume and the second search volume, in described physics overlapping region, send the described module of the PDCCH signaling of CIF to described UE that do not comprise;

6. device according to claim 5, is characterized in that, the control channel unit CCE grade of the PDCCH signaling of transmitting in described the first search volume and described the second search volume is 4 or 8.

7. device according to claim 5, is characterized in that, described the first search volume and described the second search volume comprise two UESS of the different members carrier wave for dispatching described UE.

8. device according to claim 5, is characterized in that, there are the physics overlapping region in described the first search volume and the second search volume, comprising:

9. a physical downlink control channel PDCCH signaling method, is characterized in that, comprising:

Determine the first search volume of user equipment (UE) and the position of the second search volume;

Behind the position of the first search volume of determining described UE and the second search volume, the PDCCH signaling length that does not comprise carrier wave directive territory CIF in described the first search volume, the PDCCH signaling that comprises CIF with described the second search volume is equal in length, and described the first search volume and the second search volume exist in the situation of physics overlapping region, in described physics overlapping region, send and comprise that the PDCCH signaling of CIF is to described UE;

10. method according to claim 9, is characterized in that, there are the physics overlapping region in described the first search volume and the second search volume, comprising:

Described the first search volume and the second search volume comprise the control channel unit CCE of at least one same numeral, and the CCE of described at least one same numeral is described physics overlapping region.

11. a physical downlink control channel PDCCH signaling method of reseptance, is characterized in that, comprising:

If do not comprise the length of the PDCCH signaling of carrier wave directive territory CIF in the first search volume, the PDCCH signaling that comprises CIF with the second search volume is equal in length, and there are the physics overlapping region in described the first search volume and described the second search volume,, in described physics overlapping region, user equipment (UE) receives the PDCCH signaling that does not comprise CIF that base station sends;

Described UE is according to the described PDCCH signaling that does not comprise CIF of rule parsing arranged;

12. method according to claim 11, is characterized in that, the control channel unit CCE grade of the PDCCH signaling of transmitting in described the first search volume and described the second search volume is 4 or 8.

13. method according to claim 11, is characterized in that, described the first search volume and described the second search volume comprise two UESS of the different members carrier wave for dispatching described UE.

14. method according to claim 11, is characterized in that, there are the physics overlapping region in described the first search volume and the second search volume, comprising:

15. a device, is characterized in that, comprising:

If do not comprise the length of the physical downlink control channel PDCCH signaling of carrier wave directive territory CIF for the first search volume, the PDCCH signaling that comprises CIF with the second search volume is equal in length, and there are the physics overlapping region in described the first search volume and described the second search volume,, in described physics overlapping region, receive the module of the PDCCH signaling that does not comprise CIF of base station transmission;

For the described module that does not comprise the PDCCH signaling of CIF of rule parsing according to arranging;

16. device according to claim 15, is characterized in that, the control channel unit CCE grade of the PDCCH signaling of transmitting in described the first search volume and described the second search volume is 4 or 8.

17. device according to claim 15, is characterized in that, described the first search volume and described the second search volume comprise two UESS of the different members carrier wave for dispatching described UE.

18. device according to claim 15, is characterized in that, there are the physics overlapping region in described the first search volume and the second search volume, comprising:

19. a physical downlink control channel PDCCH signaling method of reseptance, is characterized in that, comprising:

If do not comprise the length of the PDCCH signaling of carrier wave directive territory CIF in the first search volume, the PDCCH signaling that comprises CIF with the second search volume is equal in length, and there are the physics overlapping region in described the first search volume and described the second search volume,, in described physics overlapping region, user equipment (UE) receives the PDCCH signaling that comprises CIF that base station sends;

According to the described PDCCH signaling that comprises CIF of rule parsing arranged;

20. method according to claim 19, is characterized in that, the control channel unit CCE grade of the PDCCH signaling of transmitting in described the first search volume and described the second search volume is 4 or 8.

21. method according to claim 19, is characterized in that, described the first search volume and described the second search volume comprise two UESS of the different members carrier wave for dispatching described UE.

22. method according to claim 19, is characterized in that, there are the physics overlapping region in described the first search volume and the second search volume, comprising:

23. a device, is characterized in that, comprising:

If do not comprise the length of the physical downlink control channel PDCCH signaling of carrier wave directive territory CIF for the first search volume, the PDCCH signaling that comprises CIF with the second search volume is equal in length, and there are the physics overlapping region in described the first search volume and described the second search volume, in described physics overlapping region, receive the module of the PDCCH signaling that comprises CIF of base station transmission;

Module for the described PDCCH signaling of rule parsing according to arranging;

24. device according to claim 23, is characterized in that, the control channel unit CCE grade of the PDCCH signaling of transmitting in described the first search volume and described the second search volume is 4 or 8.

25. device according to claim 23, is characterized in that, described the first search volume and described the second search volume comprise two UESS of the different members carrier wave for dispatching described UE.

26. device according to claim 23, is characterized in that, there are the physics overlapping region in described the first search volume and the second search volume, comprising: