CN101646244B

CN101646244B - Method, device and user equipment for reducing control channel conflicts

Info

Publication number: CN101646244B
Application number: CN 200810134972
Authority: CN
Inventors: 曲秉玉; 刘德平
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2008-08-07
Filing date: 2008-08-07
Publication date: 2013-03-27
Anticipated expiration: 2028-08-07
Also published as: WO2010015179A1; CN101646244A

Abstract

The invention relates to the technical field of communication, and discloses a method, a device and user equipment for reducing control channel conflicts. Through the technical scheme provided by the embodiment of the invention, the user equipment has different iterative initial values on at least two carrier waves, and correspondingly, the user equipment has different starting positions of search spaces of control channels on the at least two carrier waves; and thus, by using the technical scheme provided by the embodiment of the invention, when two or more control channels of the user equipment conflict with each other, the two or more control channels of the user equipment do not conflict with each other on at least one other carrier wave.

Description

Reduce method, device and the subscriber equipment of control channel conflict

Technical field

The present invention relates to communication technical field, be specifically related to reduce method, device and the subscriber equipment of control channel conflict.

Background technology

Following senior Long Term Evolution project (the LTE-A:Long Terminal Evolution Advanced) system can support wider bandwidth, a kind of possible support more mode of wide bandwidth is: carrier aggregation also is about to a plurality of carrier waves and dispatches simultaneously to user's use.Each carrier wave is also referred to as the carrier wave that branch's carrier wave can be a Long Term Evolution project (LTE:Long Terminal Evolution), at this moment supports the terminal of LTE to access.Certainly, partial carrier wave right and wrong LTE carrier wave can be arranged also, at this moment the LTE terminal can not access this carrier wave.Which kind of situation no matter adopts the design of carrier aggregation, and each branch's carrier wave can keep the major part design of existing LTE, can reduce the change to system side and end side.

Adopt the mode of carrier aggregation to support wider bandwidth, the resource of a plurality of carrier waves is dispatched simultaneously to a subscriber equipment (UE:User Equipment) use, and the LTE-A system is the follow-up evolution system of existing Long Term Evolution project (LTE:Long Terminal Evolution) system.

Existing LTE system control channel takies front 1 or 2 or 3 symbol in the subframe (subframe) in time domain, and all running time-frequency resources (subcarrier subcarrier* symbol symbol) of giving control channel in certain subframe are divided into a plurality of base units: control channel unit (CCE:ControlChannel Element).Article one, control channel can comprise 1,2,4,8 CCE, and subscriber equipment detects the control channel of this frame at several symbols (maximum 3) of the beginning of each subframe.Because certain subscriber equipment does not know in advance whether this frame has the control channel of scheduling oneself; Do not know specifically to be placed on which time-frequency position if when corresponding control channel is arranged yet, can specifically take what CCE, so need to carry out blind Detecting to above-mentioned multiple possibility.Carry out the number of times of blind Detecting in order to reduce subscriber equipment, planned the search volume, the CCE of some forms a search volume; The control channel that is comprised of 4 kinds of CCE quantity has search volume separately.

In the prior art, give user equipment allocation customer equipment identification (UEID:USERSEquipment Identification) afterwards, the start position of the search volume of the control channel of a subscriber equipment in each subframe (subframe) k of a radio frames (radio frame) is determined by following two formula:

Y _k＝(A*Y _k-1)modD

Wherein, A=39827; D=65537;

Representative rounds downwards, for example Iterative value Y _kCan be regarded as the iterative value that changes with subframe numbers k, wherein Y-1 is iterative initial value, generally speaking iterative initial value be system assignment to the UEID of subscriber equipment or be called C-RNTI, equal n _RNTI, iterative initial value is not 0; L is polymerization level (aggregation level), N _{CCE, k}It is the total quantity that system is used for the CCE of control channel transmission in k the subframe; The iterative value Y of current subframe _kThe iterative value Y by previous subframe _K-1Behind the multiplication by constants A D delivery is obtained; So iterative value Y of current subframe _kThe iterative value that is a front K-1 subframe is carried out the result that interative computation draws; Wherein mod computing represents delivery, and the remainder of A/B is asked in Amod B representative; Z _k(L) representative is n if system is customer equipment identification in k subframe _RNTIUser equipment allocation polymerization level be the control channel of L, the start position of the search volume of described control channel.

Can draw according to above-mentioned formula, in the radio frames with 10 subframes, be respectively from the iterative value of 9 subframes of the 0th subframe to the: Y ₀=(A*Y _-1) mod D, Y ₁=(A*Y ₀) mod D ..., Y ₉=(A*Y ₈) mod D; In each subframe symbol quantity and the system bandwidth shared according to this frame control channel, can be identified for the quantity N of the CCE of control channel simultaneously _{CCE, k}, and then according to formula

Subscriber equipment can be determined the starting point of separately search volume of the control channel of 4 kinds of polymerization levels (aggregation level L) that this frame need to detect, according to pre-specified, the search volume size that the control channel of various polymerization levels is corresponding is searched for and is detected.Network side arranges the control channel of the subscriber equipment that this subframe scheduling arrives according to above-mentioned rule and formula.

If system is at the subscriber equipment of this frame scheduling to more polymerization level higher (the L value is larger), article one, control channel takies more running time-frequency resource, may all take or partly take the search volume of other oligomerization level (the L value is less), if at this moment identical according to the control channel search volume start position that calculates two or more subscriber equipmenies, if and the size of search volume can not be held lower so multi-control channel fully, the situation that subscriber equipment conflicts at this frame control channel may occur: have some these frames of subscriber equipment not to be scheduled, because do not have time-frequency position arrangement control channel, can only be deferred to follow-up subframe scheduling.

In addition, there is certain size the search volume, can hold two or many control channels, and the search volume of a plurality of subscriber equipmenies has allowed coincidence.Even the search volume start position of subscriber equipment is different, still may partially overlap.Such as: the polymerization level is 8 o'clock, and the search volume of each subscriber equipment can hold two control channels, if the search volume of subscriber equipment 1 is control channel 1,2; The search volume of subscriber equipment 2 and subscriber equipment 3 is control channel 2,3, although subscriber equipment 1 is different with 2 search volume starting points, but partially overlap, if the control channel of subscriber equipment 1 is placed on the position of control channel 2, subscriber equipment 2 and 3 control channel just must be placed on the position of channel 3 so.At this moment the control channel of subscriber equipment 2 and subscriber equipment 3 has clashed.Because the control channel in each subframe emission is the combination of 4 kinds of possibility polymerization levels, situation will be more complicated, and conflict situations also can be aggravated.

In realizing process of the present invention, the inventor finds that there is following defective at least in technique scheme: if the iterative initial value (Y of subscriber equipment on the carrier wave of a plurality of equal bandwidth _-1) identical; And the control channel symbol quantity of the carrier wave of a plurality of equal bandwidth in this subframe is also identical, i.e. N _{CCE, k}Identical, the start position of the search volume of the control channel of the various polymerization levels of this subscriber equipment on each carrier wave also is identical respectively so; If the subscriber equipment that two or more iterative initial values are different, after above-mentioned rule calculating, the starting point Z of the search volume of control channel _k(L) identical or close, this moment, the above-mentioned two or more control channel of subscriber equipment on each carrier wave was with identical or close, greatly increased the as mentioned above possibility of various control channel conflicts, if the control channel of two or more subscriber equipmenies clashes at a plurality of carrier waves, only can dispatch a subscriber equipment in the above-mentioned two or more subscriber equipment, sacrifice the possible high data rate of a part of subscriber equipment.

Summary of the invention

The embodiment of the invention provides method, device and the subscriber equipment that reduces the control channel conflict, the technical scheme of using the embodiment of the invention to provide, can be at the control channel of two or more subscriber equipmenies when a carrier wave clash, the control channel of described two or more subscriber equipment does not clash at least one other carrier wave.

The purpose of the embodiment of the invention is achieved through the following technical solutions:

The embodiment of the invention provides a kind of method that reduces the control channel conflict, comprising:

Start position determines that device determines at least two iterative initial values of subscriber equipment at least two carrier waves according to customer equipment identification, described subscriber equipment is corresponding with described customer equipment identification, described at least two carrier waves comprise first carrier and the second carrier wave, described at least two iterative initial values comprise the first iterative initial value and secondary iteration initial value, described first carrier is corresponding with described the first iterative initial value, described the second carrier wave is corresponding with described secondary iteration initial value, and described the first iterative initial value is different from described secondary iteration initial value;

Described start position determines that device determines the start position of the search volume of the control channel of described subscriber equipment on described first carrier according to described the first iterative initial value, determines the start position of the search volume of the control channel of described subscriber equipment on described the second carrier wave according to described secondary iteration initial value.

The embodiment of the invention also provides a kind of device that reduces the control channel conflict, comprising:

The iterative initial value determining unit, be used for determining at least two iterative initial values of subscriber equipment at least two carrier waves according to customer equipment identification, described subscriber equipment is corresponding with described customer equipment identification, described at least two carrier waves comprise first carrier and the second carrier wave, described at least two iterative initial values comprise the first iterative initial value and secondary iteration initial value, described first carrier is corresponding with described the first iterative initial value, described the second carrier wave is corresponding with described secondary iteration initial value, and described the first iterative initial value is different from described secondary iteration initial value;

The start position determining unit, be used for determining according to described the first iterative initial value the start position of the search volume of the control channel of described subscriber equipment on described first carrier, determine the start position of the search volume of the control channel of described subscriber equipment on described the second carrier wave according to described secondary iteration initial value.

The embodiment of the invention also provides a kind of network equipment, this network equipment comprises device and the transmitter unit of the minimizing control channel conflict that the embodiment of the invention provides, this transmitter unit is used for the search volume of the control channel on described first carrier and launches the control channel of described subscriber equipment on first carrier, and the control channel of described subscriber equipment on the second carrier wave launched in the search volume of the control channel on described the second carrier wave.

The embodiment of the invention also provides subscriber equipment, this network equipment comprises device and the detecting unit of the minimizing control channel conflict that the embodiment of the invention provides, this detecting unit is used for the start position according to the search volume of the control channel of described subscriber equipment on described first carrier, detects the control channel of described subscriber equipment on described first carrier in the search volume of the control channel on the described first carrier; Start position according to the search volume of the control channel of described subscriber equipment on described the second carrier wave detects the control channel of described subscriber equipment on described the second carrier wave in the search volume of the control channel on described the second carrier wave.

Can find out from the above technical scheme that the embodiment of the invention provides, because subscriber equipment is different with the secondary iteration initial value that distributes at the second carrier wave at the first iterative initial value that first carrier distributes in the present embodiment, even thereby this subscriber equipment and other the control channel of one or more subscriber equipmenies on first carrier clash, because the secondary iteration initial value of this subscriber equipment on the second carrier wave is different from the first iterative initial value, make the start position of the search volume of the control channel of this subscriber equipment on the second carrier wave can be different from the start position of the search volume of the control channel of this subscriber equipment on first carrier, thereby avoided clashing with other the control channel of one or more subscriber equipmenies on the second carrier wave, thereby can on the second carrier wave, dispatch simultaneously this subscriber equipment and above-mentioned one or more other subscriber equipmenies, guaranteed the high data rate of this subscriber equipment and above-mentioned one or more other subscriber equipmenies, therefore can be at the control channel of two or more subscriber equipmenies when first carrier clash, the control channel of above-mentioned two or more subscriber equipment does not clash on the second carrier wave.

Description of drawings

In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only 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.

Fig. 1 is the flow chart that reduces the embodiment of the method one of control channel conflict in the embodiment of the invention;

Fig. 2 is the flow chart that reduces the embodiment of the method two of control channel conflict in the embodiment of the invention;

Fig. 3 is the flow chart that reduces the embodiment of the method three of control channel conflict in the embodiment of the invention;

Fig. 4 is the structure chart that reduces the device embodiment of control channel conflict in the embodiment of the invention;

Fig. 5 is the structure chart of network equipment embodiment in the embodiment of the invention;

Fig. 6 is the structure chart of subscriber equipment embodiment in the embodiment of the invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.

Introduce first two technical schemes that the embodiment of the invention provides:

The first string:

(1) network side is that subscriber equipment distributes different customer equipment identifications at least two carrier waves.

Network side is that subscriber equipment is determined different customer equipment identifications at least two carrier waves, and sends at least a described customer equipment identification to the user;

Wherein, at least two carrier waves comprise first carrier and the second carrier wave, different customer equipment identifications comprises first user device identification and the second customer equipment identification, and first carrier is corresponding with the first user device identification, and the second carrier wave is corresponding with the second customer equipment identification;

Different customer equipment identification described in the embodiment of the invention can be between first user device identification and the second customer equipment identification without any relation, at this moment network side need to send to subscriber equipment to described first user device identification and the second customer equipment identification; Also can be to satisfy default relation between first user device identification and the second customer equipment identification.For example, first user device identification and the second customer equipment identification can differ a constant in the embodiment of the invention, this constant can be from the set of the value that presets value.

When first user device identification and the second customer equipment identification differ a constant, this constant and one of them customer equipment identification (first user device identification or the second customer equipment identification) multiply each other and are amassed, should be long-pending equal another customer equipment identification (the second customer equipment identification or first user device identification) to presetting the remainder that the fixed value delivery obtains, namely first user device identification this moment and the second customer equipment identification satisfy the corresponding relation that presets, and the customer equipment identification corresponding relation that presets that the embodiment of the invention provides can be shown below:

(C _i，j*n _RNTIi)mod?D＝n _RNTIj

Wherein, i, j represents carrier number, constant C _{I, j}Can be from the set of the value that presets value, the value set that the embodiment of the invention provides be 1,2 ..., 65536}; Network side is for the customer equipment identification on any two carrier waves of any one user equipment allocation all satisfies above-mentioned relation, i.e. C _{I, j}All identical to all subscriber equipmenies, be a constant; C _{I, j}Value value is different with the carrier wave difference, i.e. C _{I, j}Along with the value of i and j is different and different.

C wherein _{I, j}The set of value 1,2 ..., 65536} is equivalent to by element (A ⁿModD) set that consists of, wherein the span of n 1,2 ..., 65536}, i.e. C _{I, j}The set of value is equivalent to { A ¹Mod D, A ²Mod D ..., A ⁶⁵⁵³⁶Mod D}, wherein A is fixed value, the value of A can for 39827, D for presetting fixed value, the value of D can be 65537; Because Y _-1=n _RNT1And Y _k=(A*Y _K-1) modD, next radio frames of ordinary circumstance comprises 10 time tranfer unit, and therefore in order to make a subscriber equipment in a radio frames, the iterative value of each time tranfer unit on above-mentioned each carrier wave is all different, reduce greatly the conflict of subscriber equipment control channel, constant C _{I, j}Need to be from n at least more than or equal to 10 (A ⁿModD) choose in the element.

Suppose that the customer equipment identification of subscriber equipment on the 0th carrier wave is n _RNTI0, the customer equipment identification on the 1st carrier wave is n _RNTI1, the customer equipment identification on the 2nd carrier wave is n _RNTI2, then according to above-mentioned preset relation n _RNTI0, n _RNTI1, n _RNTI2... wait each other and can be expressed as follows:

n _RNTI1＝(C _0，1*n _RNTI0)mod?D

＝[(A ^mmod?D)*n _RNTI0]mod?D

＝(A ^m*n _RNTI0)mod?D

n _RNTI2＝(C _0，2*n _RNTI0)mod?D

＝[(A ⁿmod?D)*n _RNTI0]mod?D

＝(A ⁿ*n _RNTI0)mod?D

If m＜n,

n _RNTI2＝(C _1，2*n _RNTI1)mod?D

＝{[(A ^|m-n|)mod?D]*n _RNTI1}mod?D

＝(A ^|m-n|*n _RNTI1)mod?D

Wherein, | the absolute value of x is got in the x.| representative;

If m＞n,

n _RNTI1＝(C ₁₂*n _RNTI2)mod?D

＝{[(A ^|n-m|)mod?D]*n _RNTI2}mod?D

＝(A ^|m-n|*n _RNTI2)mod?D

Preset relation according to above-mentioned definition requires m, n, | m-n| ... waiting all will be at least more than or equal to 10.

Followingly differ at least A with the customer equipment identification of subscriber equipment on each carrier wave ¹⁰Mod D, C _{I, j}=(A ¹⁰) ^{| i-j|}Mod D is that example describes.

n _RNTI1＝(C _0，1*n _RNTI0)mod?D

＝[(A ¹⁰mod?D)*n _RNTI0]mod?D

＝(A ¹⁰*n _RNTI0)mod?D

n _RNTI2＝(C _0，2*n _RNTI0)mod?D

＝[(A ²⁰mod?D)*n _RNTI0]mod?D

＝(A ²⁰*n _RNTI0)mod?D

n _RNTI2＝(C _1，2*n _RNTI1)mod?D

＝{[(A ^|20-10|)mod?D]*n _RNTI1}mod?D

＝(A ¹⁰*n _RNTI1)mod?D

The customer equipment identification n of subscriber equipment on the 0th carrier wave _RNTI0With the customer equipment identification n on the 1st carrier wave _RNTI1Between differ a constant C _0,1=A ¹⁰Mod D; The customer equipment identification n of subscriber equipment on the 1st carrier wave _RNTI1With the customer equipment identification n on the 2nd carrier wave _RNTI2Between differ a constant C _1,2=A ¹⁰Mod D; The customer equipment identification n of subscriber equipment on the 0th carrier wave _RNTI0With the customer equipment identification n on the 2nd carrier wave _RNTI2Between differ a constant C _0,2=A ²⁰Mod D; ..., the customer equipment identification on any two carrier waves all differs at least A ¹⁰Mod D.

The Changing Pattern of the iterative value of different time transmission unit satisfies the existing design of LTE system, follow-up Y on the same carrier wave _kAt Y before _K-1..., Y _-1Iteration.So satisfy constant C _{I, j}From n at least more than or equal to 10 (A ⁿMod D) choose in the element, the iterative value in any one time tranfer unit of any one carrier wave of subscriber equipment is not identical.

If satisfy above-mentioned preset relation between the user's that network side is determined the different customer equipment identification, network side can send at least one customer equipment identification to the user;

(2) network side and subscriber equipment can be determined the iterative initial value of this subscriber equipment on corresponding carriers at the customer equipment identification on the corresponding carriers according to subscriber equipment.

Particularly, directly user's device identification is as the iterative initial value of subscriber equipment on this carrier wave, for example, the first iterative initial value can be the first user device identification (UEID) that distributes at first carrier for this subscriber equipment, correspondingly, the secondary iteration initial value also can be the second customer equipment identification that distributes at the second carrier wave for this subscriber equipment.Certainly, the iterative initial value that the embodiment of the invention is not defined as user equipment allocation must equate with the customer equipment identification of subscriber equipment, for the iterative initial value of user equipment allocation also can have certain relation with customer equipment identification.

(3) if the current time transmission unit is dispatched to certain subscriber equipment, network side is determined the start position of the search volume of the control channel of subscriber equipment on first carrier according to the first iterative initial value, determines the start position of the search volume of the control channel of subscriber equipment on the second carrier wave according to the secondary iteration initial value.

If the current time transmission unit is the time of reception unit of certain subscriber equipment, the start position of the search volume of the control channel on the first carrier that subscriber equipment is determined by the first iterative initial value begins to detect, and the start position of the search volume of the control channel on the second carrier wave of being determined by the secondary iteration initial value begins to detect.

After having determined the first iterative initial value and secondary iteration initial value, can use following formula to determine:

Y _k＝(A*Y _k-1)mod?D；

Wherein, the value of A can be 39827; The value of D can be 65537; Iterative value Y _kCan be regarded as the iterative value of in time transmission unit k variation, wherein Y _-1Be iterative initial value, iterative initial value is not 0; L is polymerization level (aggregation level), N _{CCE, k}It is the total quantity that system is used for the CCE of control channel transmission in k the time tranfer unit; The iterative value Y of current time transmission unit _kThe iterative value Y by previous time tranfer unit _K-1Behind the multiplication by constants A D delivery is obtained; So iterative value Y of current time transmission unit _kThe iterative value that is front K-1 time tranfer unit is carried out the result that interative computation draws; Wherein mod computing represents delivery, and the remainder of A/B is asked in A mod B representative; Z _k(L) start position of representative search volume of control channel in k time tranfer unit.Because the size of search volume can be predicted, therefore behind the start position of the search volume of having determined control channel, select any one control channel the search volume that can begin from the start position of the search volume of control channel, thereby determine the particular location of control channel.

From the above, subscriber equipment is different with the second customer equipment identification that distributes at the second carrier wave in the first user device identification that first carrier distributes in the present embodiment, even thereby this subscriber equipment and other the control channel of one or more subscriber equipmenies on first carrier clash, because second customer equipment identification of this subscriber equipment on the second carrier wave is different from the first user device identification, make the start position of the search volume of the control channel of this subscriber equipment on the second carrier wave can be different from the start position of the search volume of the control channel of this subscriber equipment on first carrier, thereby avoided clashing with described other the control channel of one or more subscriber equipmenies on the second carrier wave, thereby can on the second carrier wave, dispatch simultaneously this subscriber equipment and above-mentioned one or more other subscriber equipmenies, guaranteed the high data rate of this subscriber equipment and above-mentioned one or more other subscriber equipmenies, therefore can be at the control channel of two or more subscriber equipmenies when first carrier clash, the control channel of above-mentioned two or more subscriber equipment does not clash on the second carrier wave.

In the method for the minimizing control channel conflict that the embodiment of the invention provides, if the quantity of system carrier or user can supported data the number of carriers of transmission or the number of carriers that can be used for transmitting control channel be at least three, can be different at the customer equipment identification that above-mentioned at least three carrier waves distribute for subscriber equipment; For subscriber equipment different at the customer equipment identification that above-mentioned at least three carrier waves distribute, can be at the control channel of two or more subscriber equipmenies when a carrier wave clashes, the control channel of above-mentioned two or more subscriber equipmenies does not clash on other carrier waves, thereby can further guarantee the high data rate of above-mentioned two or more subscriber equipmenies.

Although be the different customer equipment identification of each user equipment allocation at each carrier wave in this programme, for each carrier wave, subscriber equipment has all only taken a customer equipment identification, can not cause the waste of customer equipment identification.

Second scheme:

(1) network side is customer equipment identification of user equipment allocation.

(2) network side is determined the different iterative initial value of this subscriber equipment at least two carrier waves with subscriber equipment according to customer equipment identification and certain preset relation between iterative initial value.

Wherein, at least two carrier waves comprise first carrier and the second carrier wave, and different iterative initial values comprises the first iterative initial value and secondary iteration initial value, and first carrier is corresponding with the first iterative initial value, and the second carrier wave is corresponding with the secondary iteration initial value;

Particularly, determine iterative initial value on certain carrier wave by the customer equipment identification of this subscriber equipment, directly user's device identification is as the iterative initial value of subscriber equipment on a certain carrier wave, and for example, the customer equipment identification of this subscriber equipment equals the first iterative initial value on the first carrier; And this subscriber equipment secondary iteration initial value and first iterative initial value on the second carrier wave have certain preset relation, can determine subscriber equipment secondary iteration initial value on the second carrier wave according to this preset relation.Certainly, the iterative initial value that the embodiment of the invention is not defined as user equipment allocation must equate with the customer equipment identification of subscriber equipment, for the iterative initial value of user equipment allocation also can have certain relation with customer equipment identification.

Default relation described in the embodiment of the invention between iterative initial value can be, for example: the first iterative initial value and secondary iteration initial value can differ a constant, this constant can be from the value that presets be gathered value.

When the first iterative initial value and secondary iteration initial value differ a constant, this constant and one of them iterative initial value (the first iterative initial value or secondary iteration initial value) multiply each other and are amassed, should be long-pending equal another iterative initial value (secondary iteration initial value or the first iterative initial value) to presetting the remainder that the fixed value delivery obtains, namely this moment, the first iterative initial value and secondary iteration initial value satisfied the corresponding relation that presets, and the iterative initial value corresponding relation that presets that the embodiment of the invention provides can be shown below:

(C _i，j*Y _i，-1)mod?D＝Y _j，-1

I wherein, j represents carrier number, constant C _{I, j}Can be from the set of the value that presets value, the value set that the embodiment of the invention provides be 1,2 ..., 65536}; Iterative initial value on any two carrier waves of any one subscriber equipment all satisfies above-mentioned relation, i.e. C _{I, j}All identical to all subscriber equipmenies, be a constant; C _{I, j}Value value is different with the carrier wave difference, i.e. C _{I, j}Along with the value of i and j is different and different.

Iteration on described each carrier wave is disposed and is satisfied the preset relation described in the scheme one.

(3) if the current time transmission unit is dispatched to certain subscriber equipment, network side is determined the start position of the search volume of the control channel of subscriber equipment on first carrier according to the first iterative initial value, determines the start position of the search volume of the control channel of subscriber equipment on the second carrier wave according to the secondary iteration initial value.Because the size of search volume can be predicted, therefore behind the start position of the search volume of having determined control channel, select any one control channel the search volume that can begin from the start position of the search volume of control channel, thereby determine the particular location of control channel.

Y _k＝(A*Y _k-1)mod?D；

Wherein, the value of A can be 39827; The value of D can be 65537; Iterative value Y _kCan be regarded as the iterative value of in time transmission unit k variation, wherein Y _-1Be iterative initial value, iterative initial value is not 0; L is polymerization level (aggregation level), N _{CCE, k}It is the total quantity that system is used for the CCE of control channel transmission in k the time tranfer unit; The iterative value Y of current time transmission unit _kThe iterative value Y by previous time tranfer unit _K-1Behind the multiplication by constants A D delivery is obtained; So iterative value Y of current time transmission unit _kThe iterative value that is front K-1 time tranfer unit is carried out the result that interative computation draws; Wherein mod computing represents delivery, and the remainder of A/B is asked in A mod B representative; Z _k(L) start position of representative search volume of control channel in k time tranfer unit.

From the above, subscriber equipment is different with the secondary iteration initial value on the second carrier wave at the first iterative initial value on the first carrier in the present embodiment, even thereby this subscriber equipment and other the control channel of one or more subscriber equipmenies on first carrier clash, because the secondary iteration initial value of this subscriber equipment on the second carrier wave is different from the first iterative initial value, make the start position of the search volume of the control channel of this subscriber equipment on the second carrier wave can be different from the start position of the search volume of the control channel of this subscriber equipment on first carrier, thereby avoided clashing with described other the control channel of one or more subscriber equipmenies on the second carrier wave, thereby can on the second carrier wave, dispatch simultaneously this subscriber equipment and above-mentioned one or more other subscriber equipmenies, guaranteed the high data rate of this subscriber equipment and above-mentioned one or more other subscriber equipmenies, therefore can be at the control channel of two or more subscriber equipmenies when first carrier clash, the control channel of above-mentioned two or more subscriber equipment does not clash on the second carrier wave.

In the method for the minimizing control channel conflict that the embodiment of the invention provides, if the quantity of system carrier or user can supported data the number of carriers of transmission or the number of carriers that can be used for transmitting control channel be at least three, can be different for the iterative initial value of subscriber equipment on above-mentioned at least three carrier waves; For the iterative initial value of subscriber equipment on above-mentioned at least three carrier waves different, can be at the control channel of two or more subscriber equipmenies when a carrier wave clashes, the control channel of above-mentioned two or more subscriber equipmenies does not clash on other carrier waves, thereby can further guarantee the high data rate of above-mentioned two or more subscriber equipmenies.

Second scheme compared with the first string: because customer equipment identification has a lot of purposes, be the initialized parameter of scrambling code generator of up-downgoing data scrambling such as customer equipment identification; Also to cover the customer equipment identification of respective user equipment on the added cyclic redundancy check (CRC) code of the control channel of each subscriber equipment so that subscriber equipment can detect the control channel of oneself accordingly, so it is mutual exclusion that customer equipment identification distributes between the user, when being that a subscriber equipment has distributed a customer equipment identification at a carrier wave, just necessarily can not be for the identical customer equipment identification of other user equipment allocation.

When being customer equipment identification of a user equipment allocation, when this subscriber equipment all uses identical customer equipment identification on each carrier wave, can not be that other users distribute this customer equipment identification at any carrier wave again; Although only taken a customer equipment identification according to subscriber equipment of second scheme, on all carrier waves, all will use this customer equipment identification, for ensure compatibility: Y _-1=n _RNTISo that iterative initial value corresponding with this customer equipment identification on any one carrier wave just can not be used by other subscriber equipmenies, and this subscriber equipment has the iterative initial value that does not wait on all carrier waves, in like manner for ensure compatibility, because Y _-1=n _RNTISo the customer equipment identification corresponding with this iterative initial value on any one carrier wave can not be used by other users, otherwise can cause the control channel conflict.So all being equal to, the customer equipment identification that equates with the iterative initial value of this subscriber equipment on each carrier wave distributed to this user, because a user will take and the proportional customer equipment identification of number of carriers, therefore second scheme customer equipment identification that need to take is more than the customer equipment identification that the first string need to take.

Fig. 1 has described the flow process of the embodiment of the method one of the minimizing control channel conflict that the embodiment of the invention provides, and comprising:

101, start position determines that device determines at least two iterative initial values of subscriber equipment at least two carrier waves according to customer equipment identification; Wherein, subscriber equipment is corresponding with customer equipment identification, at least two carrier waves comprise first carrier and the second carrier wave, at least two iterative initial values comprise the first iterative initial value and secondary iteration initial value, first carrier is corresponding with the first iterative initial value, the second carrier wave is corresponding with the secondary iteration initial value, and the first iterative initial value is different from the secondary iteration initial value;

Start position in the embodiment of the invention determines that device can be network equipment, also can be subscriber equipment; Particularly, network equipment can be the base station; Customer equipment identification is user equipment allocation by network side, so network equipment and subscriber equipment can be retrieved as the customer equipment identification of user equipment allocation.

Network side is that the customer equipment identification of user equipment allocation can be all identical on each carrier wave, and this moment, start position determined that device determines at least two iterative initial values of subscriber equipment at least two carrier waves according to a customer equipment identification; Particularly, start position determines that device is obtaining subscriber equipment behind the identical customer equipment identification at least two carrier waves, determines at least two iterative initial values according to the corresponding relation of customer equipment identification and iterative initial value; Wherein, the corresponding relation of customer equipment identification and iterative initial value can set in advance, the embodiment of the invention does not need to limit the concrete corresponding relation of customer equipment identification and iterative initial value, as long as the customer equipment identification that arranges can make the different realizations that can not affect the embodiment of the invention with the secondary iteration initial value of the first iterative initial value from the corresponding relation of iterative initial value.

Network side is that the customer equipment identification of user equipment allocation can be not identical on each carrier wave yet, and this moment, start position determined that device determines the iterative initial value of this subscriber equipment on corresponding carrier wave according to the customer equipment identification on each carrier wave; Particularly, start position determines that device is obtaining subscriber equipment behind at least two customer equipment identifications at least two carrier waves, use the customer equipment identification corresponding with carrier wave to determine at least two iterative initial values of subscriber equipment on carrier wave, wherein, customer equipment identification is corresponding one by one with carrier wave.This moment directly user's device identification as the iterative initial value of subscriber equipment on carrier wave, for example, the first iterative initial value can be the first user device identification (UEID) that distributes at first carrier for this subscriber equipment, correspondingly, the secondary iteration initial value also can be the second customer equipment identification that distributes at the second carrier wave for this subscriber equipment; Certainly, the iterative initial value that the embodiment of the invention is not defined as user equipment allocation must be the customer equipment identification for user equipment allocation, for the iterative initial value of user equipment allocation also can be other signs different from customer equipment identification.

Wherein, in the embodiment of the invention the first iterative initial value different from the secondary iteration initial value can be between the first iterative initial value and the secondary iteration initial value without any relation, also can be to satisfy default relation between the first iterative initial value and the secondary iteration initial value; For example, the first iterative initial value and secondary iteration initial value can differ a constant in the embodiment of the invention, this constant can be from the set of the value that presets value; The embodiment of the invention is when the first iterative initial value and secondary iteration initial value differ a constant, the product of this constant and the first iterative initial value equals the secondary iteration initial value to the remainder that presets the fixed value delivery and obtain, namely this moment, the first iterative initial value and secondary iteration initial value satisfied the iterative initial value corresponding relation that presets, and the iterative initial value corresponding relation that presets that the embodiment of the invention provides can be shown below:

(C _i，j*Y _i，-1)mod?D＝Y _j，-1

Constant C wherein _{I, j}Can be from the set of the value that presets value, i, j are carrier number, the value set that the embodiment of the invention provides be 1,2 ..., 65536};

The quantity of at least two carrier waves in embodiments of the present invention is three or three when above, and first carrier and the second carrier wave are any two in three or three the above carrier waves; When the quantity of at least two carrier waves was two, first carrier can be any one in two carrier waves.

102, start position determines that device determines the start position of the search volume of the control channel of subscriber equipment on first carrier according to the first iterative initial value, determines the start position of the search volume of the control channel of subscriber equipment on the second carrier wave according to the secondary iteration initial value.

Wherein, Y _k=(A*Y _K-1) mod D;

Wherein, the value of A can be 39827; The value of D can be 65537; Iterative value Y _kCan be regarded as the iterative value of in time transmission unit k variation, wherein Y _-1Iterative initial value, generally speaking iterative initial value be system assignment to the UEID of subscriber equipment or be called C-RNTI, equal n _RNTI, iterative initial value is not 0; L is polymerization level (aggregation level), N _{Cce, k}It is the total quantity that system is used for the CCE of control channel transmission in k the time tranfer unit; The iterative value Y of current time transmission unit _kThe iterative value Y by previous time tranfer unit _K-1Behind the multiplication by constants A D delivery is obtained; So iterative value Y of current time transmission unit _kThe iterative value that is front K-1 time tranfer unit is carried out the result that interative computation draws; Wherein mod computing represents delivery, and the remainder of A/B is asked in A mod B representative; Z _k(L) start position of representative search volume of control channel in k time tranfer unit.

From the above, subscriber equipment is different with the secondary iteration initial value that distributes at the second carrier wave at the first iterative initial value that first carrier distributes in the present embodiment, even thereby this subscriber equipment and other the control channel of one or more subscriber equipmenies on first carrier clash, because the secondary iteration initial value of this subscriber equipment on the second carrier wave is different from the first iterative initial value, make the start position of the search volume of the control channel of this subscriber equipment on the second carrier wave can be different from the start position of the search volume of the control channel of this subscriber equipment on first carrier, thereby avoided clashing with other the control channel of one or more subscriber equipmenies on the second carrier wave, thereby can on the second carrier wave, dispatch simultaneously this subscriber equipment and above-mentioned one or more other subscriber equipmenies, guaranteed the high data rate of this subscriber equipment and above-mentioned one or more other subscriber equipmenies, therefore can be at the control channel of two or more subscriber equipmenies when first carrier clash, the control channel of above-mentioned two or more subscriber equipment does not clash on the second carrier wave.

In the method for the minimizing control channel conflict that the embodiment of the invention provides, if the quantity of carrier wave is at least three, can be different at the iterative initial value that above-mentioned at least three carrier waves distribute for subscriber equipment; For subscriber equipment different at the iterative initial value that above-mentioned at least three carrier waves distribute, all differ a constant between any two at least three iterative initial values that for example distribute at least three carrier waves, can be at the control channel of two or more subscriber equipmenies when a carrier wave clashes, the control channel of above-mentioned two or more subscriber equipmenies does not clash on other carrier waves, thereby can further guarantee the high data rate of above-mentioned two or more subscriber equipmenies.

Fig. 2 described the flow process of the embodiment of the method two of the minimizing control channel conflict that the embodiment of the invention provides, and the disposition when having described start position and determining that device is network equipment comprises:

201, network equipment is determined at least two iterative initial values of subscriber equipment at least two carrier waves according to customer equipment identification; Wherein, subscriber equipment is corresponding with customer equipment identification, at least two carrier waves comprise first carrier and the second carrier wave, at least two iterative initial values comprise the first iterative initial value and secondary iteration initial value, first carrier is corresponding with the first iterative initial value, the second carrier wave is corresponding with the secondary iteration initial value, and the first iterative initial value is different from the secondary iteration initial value;

Network side is that the customer equipment identification of user equipment allocation can be all identical on each carrier wave, and this moment, network equipment was determined at least two iterative initial values of subscriber equipment at least two carrier waves according to a customer equipment identification; Particularly, network equipment is obtaining subscriber equipment behind the identical customer equipment identification at least two carrier waves, determines at least two iterative initial values according to the corresponding relation of customer equipment identification and iterative initial value; Wherein, the corresponding relation of customer equipment identification and iterative initial value can set in advance, the embodiment of the invention does not need to limit the concrete corresponding relation of customer equipment identification and iterative initial value, as long as the customer equipment identification that arranges can make the different realizations that can not affect the embodiment of the invention with the secondary iteration initial value of the first iterative initial value from the corresponding relation of iterative initial value.

Network side is that the customer equipment identification of user equipment allocation can be not identical on each carrier wave yet, and this moment, network equipment was determined the iterative initial value of this subscriber equipment on corresponding carrier wave according to the customer equipment identification on each carrier wave; Particularly, network equipment is obtaining subscriber equipment behind at least two customer equipment identifications at least two carrier waves, use the customer equipment identification corresponding with carrier wave to determine at least two iterative initial values of subscriber equipment on carrier wave, wherein, customer equipment identification is corresponding one by one with carrier wave.This moment directly user's device identification as the iterative initial value of subscriber equipment on carrier wave, for example, the first iterative initial value can be the first user device identification (UEID) that distributes at first carrier for this subscriber equipment, correspondingly, the secondary iteration initial value also can be the second customer equipment identification that distributes at the second carrier wave for this subscriber equipment; Certainly, the iterative initial value that the embodiment of the invention is not defined as user equipment allocation must be the customer equipment identification for user equipment allocation, for the iterative initial value of user equipment allocation also can be other signs different from customer equipment identification.

(C _i，j*Y _i，-1)mod?D＝Y _j，-1

Constant C wherein _{I, j}Can be from the set of the value that presets value, the value set that the embodiment of the invention provides be 1,2 ..., 65536};

202, network equipment is determined the start position of the search volume of the control channel of subscriber equipment on first carrier according to the first iterative initial value, determines the start position of the search volume of the control channel of subscriber equipment on the second carrier wave according to the secondary iteration initial value;

Wherein, 202 when the current time of carrier wave, transmission unit was dispatched to this subscriber equipment, just carry out; Because the size of search volume can be predicted, therefore behind the start position of the search volume of having determined control channel, select any one control channel the search volume that can begin from the start position of the search volume of control channel, thereby determine the particular location of control channel;

202 specifically can carry out with reference to 102;

203, network equipment is at the control channel of the search volume of the control channel on first carrier emission subscriber equipment on first carrier, at the control channel of the search volume of the control channel on the second carrier wave emission subscriber equipment on the second carrier wave.

Particularly, at the particular location emission control channel of 202 control channels of determining.

From the above, because subscriber equipment is different with the secondary iteration initial value that distributes at the second carrier wave at the first iterative initial value that first carrier distributes in the present embodiment, make the network equipment can be according to the first iterative initial value emission control channel on first carrier, according to secondary iteration initial value emission control channel on the second carrier wave, even thereby this subscriber equipment and other the control channel of one or more subscriber equipmenies on first carrier clash, because the secondary iteration initial value of this subscriber equipment on the second carrier wave is different from the first iterative initial value, make the start position of the search volume of the control channel of this subscriber equipment on the second carrier wave can be different from the start position of the search volume of the control channel of this subscriber equipment on first carrier, the position of the control channel that to make network side be this subscriber equipment launches at the second carrier wave and network side are different for the position of the control channel that other one or more subscriber equipmenies are launched at the second carrier wave, thereby avoided clashing with other the control channel of one or more subscriber equipmenies on the second carrier wave, thereby can on the second carrier wave, dispatch simultaneously this subscriber equipment and above-mentioned one or more other subscriber equipmenies, guaranteed the high data rate of this subscriber equipment and above-mentioned one or more other subscriber equipmenies, therefore can be at the control channel of two or more subscriber equipmenies when first carrier clash, the control channel of above-mentioned two or more subscriber equipment does not clash on the second carrier wave.

Fig. 3 described the flow process of the embodiment of the method three of the minimizing control channel conflict that the embodiment of the invention provides, and the disposition when having described start position and determining that device is subscriber equipment comprises:

301, subscriber equipment is determined at least two iterative initial values of subscriber equipment at least two carrier waves according to customer equipment identification; Wherein, subscriber equipment is corresponding with customer equipment identification, at least two carrier waves comprise first carrier and the second carrier wave, at least two iterative initial values comprise the first iterative initial value and secondary iteration initial value, first carrier is corresponding with the first iterative initial value, the second carrier wave is corresponding with the secondary iteration initial value, and the first iterative initial value is different from the secondary iteration initial value;

Network side is that the customer equipment identification of user equipment allocation can be all identical on each carrier wave, and this moment, subscriber equipment was determined at least two iterative initial values of subscriber equipment at least two carrier waves according to a customer equipment identification; Particularly, subscriber equipment is obtaining subscriber equipment behind the identical customer equipment identification at least two carrier waves, determines at least two iterative initial values according to the corresponding relation of customer equipment identification and iterative initial value; Wherein, the corresponding relation of customer equipment identification and iterative initial value can set in advance, the embodiment of the invention does not need to limit the concrete corresponding relation of customer equipment identification and iterative initial value, as long as the customer equipment identification that arranges can make the different realizations that can not affect the embodiment of the invention with the secondary iteration initial value of the first iterative initial value from the corresponding relation of iterative initial value.

Network side is that the customer equipment identification of user equipment allocation can be not identical on each carrier wave yet, and this moment, subscriber equipment was determined the iterative initial value of this subscriber equipment on corresponding carrier wave according to the customer equipment identification on each carrier wave; Particularly, subscriber equipment is obtaining subscriber equipment behind at least two customer equipment identifications at least two carrier waves, use the customer equipment identification corresponding with carrier wave to determine at least two iterative initial values of subscriber equipment on carrier wave, wherein, customer equipment identification is corresponding one by one with carrier wave.This moment directly user's device identification as the iterative initial value of subscriber equipment on carrier wave, for example, the first iterative initial value can be the first user device identification (UEID) that distributes at first carrier for this subscriber equipment, correspondingly, the secondary iteration initial value also can be the second customer equipment identification that distributes at the second carrier wave for this subscriber equipment; Certainly, the iterative initial value that the embodiment of the invention is not defined as user equipment allocation must be the customer equipment identification for user equipment allocation, for the iterative initial value of user equipment allocation also can be other signs different from customer equipment identification.

(C _i，j*Y _i，-1)mod?D＝Y _j，-1

302, subscriber equipment is determined the start position of the search volume of the control channel of subscriber equipment on first carrier according to the first iterative initial value, determines the start position of the search volume of the control channel of subscriber equipment on the second carrier wave according to the secondary iteration initial value;

302 specifically can carry out with reference to 102;

303, subscriber equipment detects the control channel of subscriber equipment on first carrier according to the start position of the search volume of the control channel of subscriber equipment on first carrier in the search volume of the control channel on the first carrier; Subscriber equipment detects the control channel of subscriber equipment on the second carrier wave according to the start position of the search volume of the control channel of subscriber equipment on the second carrier wave in the search volume of the control channel on the second carrier wave.

From the above, although subscriber equipment is different with the secondary iteration initial value on the second carrier wave at the first iterative initial value on the first carrier in the present embodiment, but subscriber equipment can detect control channel at first carrier according to the first iterative initial value, detect channel according to the secondary iteration initial value at the second carrier wave, even thereby subscriber equipment is different from the secondary iteration initial value on the second carrier wave at the first iterative initial value on the first carrier, can not affect subscriber equipment to the detection of control channel yet; Therefore network side is when the emission control channel, even this subscriber equipment of emission and other the control channel of one or more subscriber equipmenies on first carrier clash, because this subscriber equipment is different from the first iterative initial value at the secondary iteration initial value that the second carrier wave distributes, the control channel that control channel that network side launches at the second carrier wave and other one or more subscriber equipmenies are launched at the second carrier wave is different, thereby avoided clashing with other the control channel of one or more subscriber equipmenies on the second carrier wave, thereby can on the second carrier wave, dispatch simultaneously this subscriber equipment and above-mentioned one or more other subscriber equipmenies, guaranteed the high data rate of this subscriber equipment and above-mentioned one or more other subscriber equipmenies, therefore can be at the control channel of two or more subscriber equipmenies when first carrier clash, the control channel of above-mentioned two or more subscriber equipment does not clash on the second carrier wave.

The embodiment of the method that the minimizing control channel that the concrete example of following act is described the embodiment of the invention to be provided conflicts, the embodiment of the method four of the minimizing control channel conflict that the embodiment of the invention provides is as described below:

The iterative initial value of subscriber equipment on different carrier is different; The iterative initial value of this subscriber equipment on different carrier has following relation:

(1) iterative initial value on any two carrier waves differs a constant, suppose that any two carrier waves are first carrier and the second carrier wave, then the first iterative initial value on the first carrier and the secondary iteration initial value on the second carrier wave satisfy following relation: the product of constant and the first iterative initial value equals the secondary iteration initial value to the remainder that presets the fixed value delivery and obtain, preset fixed value and set in advance, such as being arranged to 65537 etc.;

Suppose first carrier for scheduling to i carrier wave of subscriber equipment, the iterative initial value Y on i carrier wave _{I ,-1}Expression; The second carrier wave for scheduling to j carrier wave of subscriber equipment, the iterative initial value Y on j carrier wave _{J ,-1}Expression, the constant that the first iterative initial value and secondary iteration initial value differ is C _{I, j}, presetting fixed value is D, then Y _{I ,-1}And Y _{J ,-1}Relation can represent by following formula:

(C _i，j*Y _i，-1)mod?D＝Y _j，-1

(2) network side be for the iterative initial value on any two carrier waves of any one user equipment allocation can satisfy the relation described in (1), i.e. C _{I, j}All identical to all subscriber equipmenies, be a constant, C _{I, j}Value value is different with the carrier wave difference, i.e. C _{I, j}Along with the value of i and j is different and different, C _{I, j}Span can for the set 1,2 ..., 65536}.

C wherein _{I, j}The set of value 1,2 ..., 65536} is equivalent to the set that is made of element (A^n mod D), wherein A^n represents the n power of A, the set of the value of n for 1,2 ..., N}, N are the quantity of customer equipment identification, or satisfy fixed relationship with the quantity of customer equipment identification; Be C _{I, j}The set of value be equivalent to A^1mod D, A^2mod D ..., A^65536mod D}; Next radio frames of ordinary circumstance comprises 10 time tranfer unit, therefore different for the iterative initial value that makes each time tranfer unit of each carrier wave in the radio frames, constant C can be chosen from the element of n more than or equal to M (A^n mod D), wherein the value of A can be 39827, the value of D can be 65537, wherein M is the quantity of the time tranfer unit in the time tranfer cycle, wherein the time tranfer cycle can be a radio frames, and the time tranfer unit can be the subframe of radio frames.

Suppose Y _{0 ,-1}With Y _{1 ,-1}The constant C that differs ₀₁Be A^I mod D; Y _{0 ,-1}With Y _{2 ,-1}The constant C that differs ₀₂Be A^II mod D; Y _{1 ,-1}With Y _{2 ,-1}The constant C that differs ₁₂Be (A^II/A^I) mod D=A^ (II-I) mod D.At this moment, the iterative value Y of subscriber equipment on the 0th carrier wave _0,0To Y _0,9Can be expressed as follows:

Y _0，0＝(A*Y _0，-1)mod?D

Y _0，1＝(A*Y _0，0)mod?D＝(A^2*Y _0，-1)mod?D

Y _0，9＝(A*Y _0，8)mod?D＝(A^10*Y _0，-1)mod?D

Correspondingly, the iterative value Y of subscriber equipment on the 1st carrier wave _1,0To Y _1,9Can be expressed as follows:

Y _1,0=(A*Y _{1 ,-1}) mod D={A*[(A^I mod D) * Y _{0 ,-1}] mod D, wherein I be from set 1,2 ..., and choose among the 65536} more than or equal to 10 number;

Y _1，1＝(A*Y _1，0)mod?D

Y _1，9＝(A*Y _1，8)mod?D

Correspondingly, the iterative value Y of subscriber equipment on the 2nd carrier wave _2,0To Y _2,9Can be expressed as follows:

Y _2,0=(A*Y _{2 ,-1}) mod D={A*[(A^II mod D) * Y _{0 ,-1}] mod D, wherein II be from set 1,2 ..., and choose among the 65536} more than or equal to 10 number;

Y _2，1＝(A*Y _2，0)mod?D

Y2，9＝(A*Y2，8)mod?D

Followingly differ at least A^10modD, C with the iterative initial value of subscriber equipment on each carrier wave _{I, j}=(A^10) ^ (j-i) modD is that example describes:

Suppose 1 C of carrier wave 0 and carrier wave ₀₁And carrier wave 1 and 2 C of carrier wave ₁₂All equal A^10mod D, this moment, n got 10; 2 C of carrier wave 0 and carrier wave ₀₂=A^20mod D, this moment, n got 20.

Iterative initial value on these three carrier waves of the 0th carrier wave, the 1st carrier wave and the 2nd carrier wave is respectively Y _{0 ,-1}, Y _{1 ,-1}=(A^10mod D) * Y _{0 ,-1}, Y _{2 ,-1}=(A^10mod D) * Y _{1 ,-1}=(A^20mod D) * Y _{0 ,-1}, Y _{0 ,-1}With Y _{1 ,-1}There is fixed relationship C _{I, j}Be (A^10mod D), Y _1,1With Y _{2 ,-1}There is fixed relationship C _{I, j}Be (A^10mod D), Y _{0 ,-1}With Y _{2 ,-1}There is fixed relationship C _{I, j}Be (A^20mod D); The start position Changing Pattern of the search volume of the control channel of different time tranfer unit satisfies the existing design of LTE system, follow-up Y on the same carrier wave _kAt Y before _K-1..., Y _-1Iteration.So the start position of the search volume of the control channel on the different carrier of subscriber equipment in any one time tranfer unit is not identical.When iterative initial value was customer equipment identification, network side can be customer equipment identification of user equipment allocation at each carrier wave respectively.

Suppose Y _{0 ,-1}With Y _{1 ,-1}The constant C that differs ₀₁Be A^10mod D; Y _{0 ,-1}With Y _{2 ,-1}The constant C that differs ₀₂Be A^20mod D; Y _{1 ,-1}With Y _{2 ,-1}The constant C that differs ₁₂Be A^10mod D.At this moment, the iterative value Y of subscriber equipment on the 0th carrier wave _0,0To Y _0,9Can be expressed as follows:

Y _0，0＝(A*Y _0，-1)mod?D

Y _0，1＝(A*Y _0，0)mod?D

Y _0，9＝(A*Y _0，8)mod?D

Y _1，0＝(A*Y _1，-1)mod?D＝[A*(A^10mod?D)*Y _0，-1)]mod?D

Y _1，1＝(A*Y _1，0)mod?D

Y _1，9＝(A*Y _1，8)mod?D

Y _2，0＝(A*Y _2，-1)mod?D＝[A*(A^20mod?D)*Y _0，-1)]mod?D

Y _2，1＝(A*Y _2，0)mod?D

Y _2，9＝(A*Y _2，8)mod?D

Fig. 4 has described the structure of the device embodiment of the minimizing control channel conflict that the embodiment of the invention provides, comprising:

Iterative initial value determining unit 401, be used for determining at least two iterative initial values of subscriber equipment at least two carrier waves according to customer equipment identification, subscriber equipment is corresponding with customer equipment identification, at least two carrier waves comprise first carrier and the second carrier wave, at least two iterative initial values comprise the first iterative initial value and secondary iteration initial value, first carrier is corresponding with the first iterative initial value, and the second carrier wave is corresponding with the secondary iteration initial value, and the first iterative initial value is different from the secondary iteration initial value;

Particularly, iterative initial value determining unit 401 can comprise acquiring unit 4011 and determining unit 4012, wherein:

Acquiring unit 4011 is used for obtaining at least two customer equipment identifications of subscriber equipment at least two carrier waves, and customer equipment identification is corresponding one by one with carrier wave, and subscriber equipment is corresponding with customer equipment identification, and at least two carrier waves comprise first carrier and the second carrier wave;

Determining unit 4012, be used for using the customer equipment identification corresponding with carrier wave to determine at least two iterative initial values of subscriber equipment on carrier wave, at least two iterative initial values comprise the first iterative initial value and secondary iteration initial value, first carrier is corresponding with the first iterative initial value, the second carrier wave is corresponding with the secondary iteration initial value, and the first iterative initial value is different from the secondary iteration initial value.

Or

Acquiring unit 4011 is used for obtaining the identical customer equipment identification of subscriber equipment at least two carrier waves, and subscriber equipment is corresponding with customer equipment identification, and at least two carrier waves comprise first carrier and the second carrier wave;

Determining unit 4012, be used for determining at least two iterative initial values according to the corresponding relation of customer equipment identification and iterative initial value, at least two iterative initial values comprise the first iterative initial value and secondary iteration initial value, first carrier is corresponding with the first iterative initial value, the second carrier wave is corresponding with the secondary iteration initial value, and the first iterative initial value is different from the secondary iteration initial value.

Start position determining unit 402, be used for determining according to the first iterative initial value the start position of the search volume of the control channel of subscriber equipment on first carrier, determine the start position of the search volume of the control channel of subscriber equipment on the second carrier wave according to the secondary iteration initial value.

The device of the minimizing control channel conflict that the embodiment of the invention provides can be used as network equipment and uses, and also can be used as subscriber equipment and uses.

Fig. 5 has described the structure of the network equipment embodiment that the embodiment of the invention provides, comprising:

Iterative initial value determining unit 501, be used for determining at least two iterative initial values of subscriber equipment at least two carrier waves according to customer equipment identification, subscriber equipment is corresponding with customer equipment identification, at least two carrier waves comprise first carrier and the second carrier wave, at least two iterative initial values comprise the first iterative initial value and secondary iteration initial value, first carrier is corresponding with the first iterative initial value, and the second carrier wave is corresponding with the secondary iteration initial value, and the first iterative initial value is different from the secondary iteration initial value;

Start position determining unit 502, be used for determining according to the first iterative initial value the start position of the search volume of the control channel of subscriber equipment on first carrier, determine the start position of the search volume of the control channel of subscriber equipment on the second carrier wave according to the secondary iteration initial value;

Transmitter unit 503 is used at the control channel of the search volume of the control channel on first carrier emission subscriber equipment on first carrier, at the control channel of the search volume of the control channel on the second carrier wave emission subscriber equipment on the second carrier wave.

From the above, because subscriber equipment is different with the secondary iteration initial value that distributes at the second carrier wave at the first iterative initial value that first carrier distributes, make the present embodiment of network equipment can be according to the first iterative initial value emission control channel on first carrier, according to secondary iteration initial value emission control channel on the second carrier wave, even thereby this subscriber equipment and other the control channel of one or more subscriber equipmenies on first carrier clash, because the secondary iteration initial value of this subscriber equipment on the second carrier wave is different from the first iterative initial value, make the start position of the search volume of the control channel of this subscriber equipment on the second carrier wave can be different from the start position of the search volume of the control channel of this subscriber equipment on first carrier, the position of the control channel that to make network side be this subscriber equipment launches at the second carrier wave and network side are different for the position of the control channel that other one or more subscriber equipmenies are launched at the second carrier wave, thereby avoided clashing with other the control channel of one or more subscriber equipmenies on the second carrier wave, thereby can on the second carrier wave, dispatch simultaneously this subscriber equipment and above-mentioned one or more other subscriber equipmenies, guaranteed the high data rate of this subscriber equipment and above-mentioned one or more other subscriber equipmenies, therefore can be at the control channel of two or more subscriber equipmenies when first carrier clash, the control channel of above-mentioned two or more subscriber equipment does not clash on the second carrier wave.

Fig. 6 has described the structure of the subscriber equipment embodiment that the embodiment of the invention provides, comprising:

Iterative initial value determining unit 601, be used for determining at least two iterative initial values of subscriber equipment at least two carrier waves according to customer equipment identification, subscriber equipment is corresponding with customer equipment identification, at least two carrier waves comprise first carrier and the second carrier wave, at least two iterative initial values comprise the first iterative initial value and secondary iteration initial value, first carrier is corresponding with the first iterative initial value, and the second carrier wave is corresponding with the secondary iteration initial value, and the first iterative initial value is different from the secondary iteration initial value;

Start position determining unit 602, be used for determining according to the first iterative initial value the start position of the search volume of the control channel of subscriber equipment on first carrier, determine the start position of the search volume of the control channel of subscriber equipment on the second carrier wave according to the secondary iteration initial value;

Detecting unit 603 is used for the start position according to the search volume of the control channel of subscriber equipment on first carrier, detects the control channel of subscriber equipment on first carrier in the search volume of the control channel on the first carrier; According to the start position of the search volume of the control channel of subscriber equipment on the second carrier wave, detect the control channel of subscriber equipment on the second carrier wave in the search volume of the control channel on the second carrier wave.

One of ordinary skill in the art will appreciate that all or part of step that realizes in above-described embodiment method is to come the relevant hardware of instruction to finish by program, described program can be stored in a kind of computer-readable recording medium, this program is carried out the part or all of step of the said method embodiment that the embodiment of the invention provides when carrying out.

The above-mentioned storage medium of mentioning can be read-only memory, disk or CD etc.

More than method, device and the subscriber equipment of minimizing control channel conflict that the embodiment of the invention is provided be described in detail, the explanation of above embodiment just is used for helping to understand method of the present invention and thought thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.

Claims

1. a method that reduces the control channel conflict is characterized in that, comprising:

2. the method for minimizing control channel as claimed in claim 1 conflict is characterized in that, described start position determines that device determines that according to customer equipment identification the step of at least two iterative initial values of subscriber equipment at least two carrier waves is specially:

Described start position determines that device obtains at least two customer equipment identifications of described subscriber equipment on described at least two carrier waves, and described customer equipment identification is corresponding one by one with described carrier wave;

Described start position determines that device uses the described customer equipment identification corresponding with described carrier wave to determine described at least two iterative initial values of described subscriber equipment on described carrier wave.

3. the method for minimizing control channel as claimed in claim 1 conflict is characterized in that, described start position determines that device determines that according to customer equipment identification the step of at least two iterative initial values of subscriber equipment at least two carrier waves is specially:

Described start position determines that device obtains the identical customer equipment identification of described subscriber equipment on described at least two carrier waves;

Described start position determines that device determines described at least two iterative initial values according to the corresponding relation of described customer equipment identification and described iterative initial value.

4. the method for conflicting such as the arbitrary described minimizing control channel of claims 1 to 3, it is characterized in that, described start position determines that device is network equipment, described network equipment is determined the start position of the search volume of the control channel of described subscriber equipment on described first carrier according to described the first iterative initial value, determines that according to described secondary iteration initial value described subscriber equipment further comprises behind the start position of the search volume of the control channel on described the second carrier wave:

The control channel of described subscriber equipment on first carrier launched in the search volume of the control channel of described network equipment on described first carrier, and the control channel of described subscriber equipment on the second carrier wave launched in the search volume of the control channel on described the second carrier wave.

5. such as the method for the arbitrary described minimizing control channel conflict of claims 1 to 3, it is characterized in that described start position determines that device is subscriber equipment;

Described subscriber equipment is determined the start position of the search volume of the control channel of described subscriber equipment on described first carrier according to described the first iterative initial value, determines that according to described secondary iteration initial value described subscriber equipment further comprises behind the start position of the search volume of the control channel on described the second carrier wave:

Described subscriber equipment detects the control channel of described subscriber equipment on described first carrier according to the start position of the search volume of the control channel of described subscriber equipment on described first carrier in the search volume of the control channel on the described first carrier; Described subscriber equipment detects the control channel of described subscriber equipment on described the second carrier wave according to the start position of the search volume of the control channel of described subscriber equipment on described the second carrier wave in the search volume of the control channel on described the second carrier wave.

6. such as the method for the arbitrary described minimizing control channel conflict of claims 1 to 3, it is characterized in that described the first iterative initial value and different being specially of described secondary iteration initial value:

Described the first iterative initial value and described secondary iteration initial value differ a constant.

7. the method for minimizing control channel as claimed in claim 6 conflict is characterized in that described constant, described the first iterative initial value and described secondary iteration initial value satisfy following relation:

The product of described constant and described the first iterative initial value equals described secondary iteration initial value to the remainder that presets the fixed value delivery and obtain.

8. the method for minimizing control channel conflict as claimed in claim 7 is characterized in that, described constant is value from the value set of presetting.

9. the method for minimizing control channel as claimed in claim 8 conflict, it is characterized in that, the described set of value set for being consisted of by element (A^n mod D) of presetting, wherein the set of the value of n is for { 1,2, ..., N}, D are the described fixed value that presets, and A is fixed value, N is the quantity of customer equipment identification, and A^n represents the n power of A.

10. the method for minimizing control channel conflict as claimed in claim 9 is characterized in that described constant is chosen from the element (A^n mod D) of n more than or equal to M, and described M is the quantity of the time tranfer unit in the time tranfer cycle.

11. the method such as the arbitrary described minimizing control channel conflict of claims 1 to 3 is characterized in that, differs a constant between any two iterative initial values in described at least two iterative initial values.

12. the method such as the arbitrary described minimizing control channel conflict of claims 1 to 3 is characterized in that the quantity of described at least two carrier waves is more than three or three;

Described first carrier and described the second carrier wave are any two in described three or three the above carrier waves.

13. a device that reduces the control channel conflict is characterized in that, comprising:

14. the device of minimizing control channel conflict as claimed in claim 13 is characterized in that described iterative initial value determining unit comprises:

Acquiring unit, be used for obtaining at least two customer equipment identifications of described subscriber equipment on described at least two carrier waves, described customer equipment identification is corresponding one by one with described carrier wave, described subscriber equipment is corresponding with described customer equipment identification, and described at least two carrier waves comprise first carrier and the second carrier wave;

Determining unit, be used for using the described customer equipment identification corresponding with described carrier wave to determine described at least two iterative initial values of described subscriber equipment on described carrier wave, described at least two iterative initial values comprise the first iterative initial value and secondary iteration initial value, described first carrier is corresponding with described the first iterative initial value, described the second carrier wave is corresponding with described secondary iteration initial value, and described the first iterative initial value is different from described secondary iteration initial value.

15. the device of minimizing control channel conflict as claimed in claim 13 is characterized in that described iterative initial value determining unit comprises:

Acquiring unit is used for obtaining the identical customer equipment identification of described subscriber equipment on described at least two carrier waves, and described subscriber equipment is corresponding with described customer equipment identification, and described at least two carrier waves comprise first carrier and the second carrier wave;

Determining unit, be used for determining described at least two iterative initial values according to the corresponding relation of described customer equipment identification and described iterative initial value, described at least two iterative initial values comprise the first iterative initial value and secondary iteration initial value, described first carrier is corresponding with described the first iterative initial value, described the second carrier wave is corresponding with described secondary iteration initial value, and described the first iterative initial value is different from described secondary iteration initial value.

16. one kind comprises such as the network equipment of the device of the arbitrary described minimizing control channel conflict of claim 13 to 15, it is characterized in that, also comprises:

Transmitter unit, the control channel of described subscriber equipment on first carrier launched in the search volume that is used for the control channel on described first carrier, and the control channel of described subscriber equipment on the second carrier wave launched in the search volume of the control channel on described the second carrier wave.

17. one kind comprises such as the subscriber equipment of the device of the arbitrary described minimizing control channel conflict of claim 13 to 15, it is characterized in that, also comprises:

Detecting unit is used for the start position according to the search volume of the control channel of described subscriber equipment on described first carrier, detects the control channel of described subscriber equipment on described first carrier in the search volume of the control channel on the described first carrier; Start position according to the search volume of the control channel of described subscriber equipment on described the second carrier wave detects the control channel of described subscriber equipment on described the second carrier wave in the search volume of the control channel on described the second carrier wave.