CN103621030A - Method of scrambling signals, transmission point device and user equipment using the method - Google Patents

Abstract

Method of scrambling signals, transmission point device and user equipment using the method are provided. The method is for scrambling signals assigned on predetermined radio resources of at least one layer of resource blocks with the same time and frequency resources, and comprises the steps of: sending an ID table to a user equipment through higher layer signaling, the ID table being a subset of the whole ID space and containing available IDs for the user equipment; notifying the user equipment an ID in the ID table to be used through physical layer signaling or UE specific higher layer signaling; generating a random seed based on the notified ID; initializing a scrambling sequence by the random seed; and scrambling the signals with the initialized scrambling sequence. The method of the disclosure, by combining physical layer signaling and higher layer signaling, may notify the used group ID and the blind detection space to a UE, the blind detection for the UE is enabled and the signaling overhead is reduced.

Description

Sending point device and the subscriber equipment of signal scrambling method, use the method

Technical field

The present invention relates to method of signal multiplexing and reference signal design field in communication system.

Background technology

DMRS (Demodulation Reference Signal, solution is called reference signal) or UE (User Equipment, subscriber equipment) DRS (Dedicated Reference Signal) is senior LTE (Long-Term Evolution-Advanced, Long Term Evolution) one of RS (Reference Signal, reference signal) using in (version 10, version 11 etc.).Data division in DMRS and senior LTE system carries out same precoding, therefore can be provided for the channel estimating of demodulation.

Fig. 1 means that an example carried out the schematic diagram of multiplexing DMRS.Fig. 1 represents structure and the DMRS of RB (Resource Block, Resource Block).A RB shown in Fig. 1.The transverse axis of RB (T) the expression time (OFDM code element), the longitudinal axis (F) represents the width of frequency band (subcarrier).For RB, transverse axis is divided into 14 parts, and each several part forms OFDM code element on y direction.The longitudinal axis is divided into 12 parts, and each several part forms subcarrier in X direction.Each little box indicating RE (resource element, resource element) in RB, whole 12 * 14 RE of RB form subframe, and subframe comprises time slot 1 and time slot 2 along X direction.Shown in Fig. 1, first three code element that RB rises in left side is as control area.The remainder of RB is used for sending data division, and wherein the DMRS of predetermined quantity is included in RB, and is assigned to a plurality of different precalculated position of RB.

Shown in Fig. 1, DMRS multiplies each other with OCC (orthogonal cover code, orthogonal covering codes) and scramble sequence respectively.Fig. 1 illustrates the example of the DMRS in two kinds of situations of order 1 and order 2.The in the situation that of order 1, DMRS can be used OCC[1,1 to its only one deck] or OCC[1 ,-1], the in the situation that of order 2, DMRS had both been used OCC[1,1] also use OCC[1 ,-1], they are respectively used to arbitrary layer of DMRS.Because two OCC are mutually orthogonal, so the in the situation that of order 2, although two layers of DMRS take the RE of same frequency/time, the orthogonality between two OCC has still guaranteed that two layers of DMRS are mutually orthogonal.The different layers that it should be noted that DMRS can be called different DMRS ports.For example, in Fig. 1, use OCC[1,1] DMRS can be called port 7, use OCC[1 ,-1] DMRS can be called port 8.When only using port 7 or port 8, be the situation of order 1, when both using port 7 also to use port 8, be the situation of order 2.

On the basis of OCC, have by the initialized scramble sequence of random seed [a1, a2, a3 ..., b1, b2, b3 ... ].In Fig. 1, in a RE, port 7 is used identical scramble sequence with 8." identical scramble sequence " refers to that scramble sequence is by identical random seed initialization herein.As everyone knows, the random seed in version 10 is by equation (1) calculating below.

Random seed

Wherein, ns represents timeslot number (two time slots in Fig. 1 form a subframe), and cell_id represents sending point ID (cell ID， community ID), and SCID is binary value.From equation (1), can find out, in version 10, DMRS random seed is determined by timeslot number, sending point ID and binary value SCID.In a sending point, port 7 and 8 can be set with the different value of SCID.In the case, port 7 and port 8 are for example used different scramble sequence [a1, a2, a3 ... ] and [b1, b2, b3 ... ].This is mainly used in multi-user (MU) operation, and it is narrated in the back.

Because DMRS is the basis that receiving terminal carries out demodulation, so how to set DMRS random seed, under different scenes (scenarios), be all very important, below this is elaborated.

CoMP scene

JT (Joint Transmission combines transmission) is a kind of technology of CoMP (Coordinate Multiple Point, cooperative multipoint transmission).Fig. 2 means the schematic diagram of a routine JT scene.As shown in Figure 2, have two sending points (or community) 1 and 2, these two sending points send to a UE (such as mobile phone etc.) wave beam consisting of a plurality of examples RB as shown in Figure 1.Two reduced representations that RB is the RB in Fig. 1 in Fig. 2.

The principle of the operation of JT shown in Fig. 2.In JT operation, different sending points send identical data and DMRS to a UE, synthetic by wireless mode (Over The Air, OTA) from identical data and the DMRS of different sending points.Like this, UE can obtain the diversity gain from a plurality of sending points.Therefore, for JT operation, for the synthetic signal from different sending points correctly, need to be from the identical DMRS of different sending points, otherwise, cannot be correctly synthetic by wireless mode from the DMRS of different sending points.In this meaning, JT action need is for carrying out initialized identical random seed to scramble sequence.

But adjacent sending point (community) likely has different sending point ID.For example, in version 10, adjacent sending point (community) may have different sending point (community) ID.As shown in above-mentioned equation (1), random seed has comprised parameter " cell_id " in calculating, if therefore the sending point ID of different sending points is different, their DMRS or DMRS scramble sequence are also different.Therefore,, for JT operation, key is how to guarantee that the different sending points with different sending point ID have identical DMRS random seed.

Non-CoMP scene

Fig. 3 means the schematic diagram of a routine non-CoMP scene.Different from the situation of Fig. 2, in Fig. 3, the signals that send from two adjacent sending points 1 and 2 are respectively used to different UE, i.e. UE1 and UE2, and UE1 1 receives signal from sending point, and UE2 2 receives signals from sending point.In non-CoMP operation, DMRS fixes the position in RB, therefore may the phase mutual interference due to their overlapping in frequency and time resource from the DMRS of adjacent sending point.For example, as shown in Figure 3, from sending point 1, mail to the signal of UE1 overlapped frequency and time resource with the signal that mails to UE2 from sending point 2, thereby their DMRS phase mutual interference (as shown in the dotted arrow in Fig. 3).Therefore, in the case, adjacent sending point needs different DMRS scramble sequence to come this ICI (inter-cell interference, presence of intercell interference) to carry out randomization.

But adjacent sending point (community) likely has identical sending point ID.For example, in version 11, adjacent sending point may have identical sending point ID.As shown in above-mentioned equation (1), DMRS random seed has comprised parameter " cell_id " in calculating, if therefore adjacent sending point has identical cell_id, DMRS scramble sequence can be by identical random seed initialization, and ICI can occur the DMRS of adjacent sending point.Therefore,, for non-CoMP operation, key is how to guarantee that the adjacent sending point with identical sending point ID has different DMRS random seeds.

Fig. 4 means the schematic diagram that JT scene and non-CoMP scene are compared.The left side of Fig. 4 illustrates JT scene, and wherein adjacent sending point has different sending point ID.In the case, the DMRS random seed for the DMRS of initialization sending point 1 and sending point 2 is respectively

with they all use default SCID=0 to obtain by above-mentioned equation (1).Here, parameter c ell_id1 represents the sending point ID of sending point 1, and parameter c ell_id2 represents the sending point ID of sending point 2, and cell_id1 is not equal to cell_id2.In order correctly to synthesize the DMRS from two sending points 1 and 2 by wireless mode, require their DMRS random seed necessary identical, especially in the situation that their sending point ID is different.In a word, for JT scene, owing to synthesizing DMRS by wireless mode, require JT sending point to there is identical DMRS, so need to there be identical DMRS seed.

The right side of Fig. 4 illustrates non-CoMP scene, and wherein adjacent sending point has identical sending point ID, i.e. cellid1.In the case, for initialization, for the sending point 1 of UE1 with for the DMRS random seed of the DMRS of the sending point 2 of UE2, be

they use default SCID=0 to obtain by above-mentioned equation (1).For the ICI between two sending points 1 and 2 DMRS (as shown in the dotted arrow in Fig. 4) carries out randomization, require their DMRS scramble sequence necessary different, especially in the situation that their sending point ID is identical.In a word, for non-CoMP, the ICI producing for the DMRS to by overlapping carries out randomization, need to have different DMRS seeds.

For above-mentioned JT and non-CoMP scene, can reach a conclusion, these two scenes have conflicting requirement for DMRS random seed: the DMRS random seed that JT operation requirements is identical, but not the different DMRS random seed of CoMP operation requirements.

MU-MIMO scene

Except above-mentioned two kinds of scenes, also need to consider MU-MIMO (Multi-user Multiple Input-Multiple Output, multi-user's multiple-input and multiple-output) scene.Fig. 5 means the schematic diagram of a routine MU-MIMO scene.The principle of the operation of MU-MIMO shown in Fig. 5.For MU-MIMO operation, two or more UE are assigned to shared frequency/time Radio Resource.As shown in Figure 5, there are a sending point and two UE, i.e. UE1 and UE2, these two UE share identical frequency/time resource.Location overlap due to DMRS, for example, if for example, for example, so a UE (UE1) can estimate to produce according to DMRS the channel of the UE (UE2) disturbing, this UE (UE1) can eliminate MU in self side and disturb (as shown in the dotted arrow in Fig. 5).

The interference of this UE side is eliminated and is depended on that can UE carry out blind Detecting to producing the DMRS of the UE disturbing.Fig. 6 means the schematic diagram of a routine blind Detecting.The principle of blind Detecting shown in Fig. 6.The degree of freedom of DMRS in a sending point (community) is from two aspects: be from DMRS random seed on the one hand, by setting SCID=0 or 1; From OCC on the other hand, by OCC being set as to [1,1] or [1 ,-1] (or being equivalent to selection DMRS port 7 or 8).Particularly, as shown in Figure 6, the sending point ID that supposes sending point is cell_id1, at SCID, is 0 or 1 o'clock, by above-mentioned equation (1), can obtain

with

by combining two different DMRS random seeds and two OCC, can access four different DMRS: seed 0, OCC[1,1]; Seed 0, OCC[1 ,-1]; Seed 1, OCC[1,1]; And seed 1, OCC[1 ,-1].Each DMRS in four different DMRS is respectively used to a UE.For example, as shown in Figure 6, there is seed 0 and OCC[1,1] DMRS for UE0; There is seed 0 and OCC[1 ,-1] DMRS for UE1; There is seed 1 and OCC[1,1] DMRS for UE2; There is seed 1 and OCC[1 ,-1] DMRS for UE3.Therefore DMRS has 4 dimensions (dimension) altogether, and whether UE can to there being the one or more blind Detecting of carrying out in the DMRS of other three UE in common source.Why feasible this blind Detecting is, is due to detection space, to be limited to the DMRS of 4 dimensions.Be not difficult to find out, the DMRS random seed design that the design of DMRS random seed has a significant impact version 10 to this blind Detecting tool makes this blind Detecting become possibility, and this should be considered as for an aspect in the further improved design of DMRS random seed.

Summary of the invention

One aspect of the present invention is for signal being carried out to the method for scrambling, this signal is assigned to the predetermined Radio Resource of at least one deck Resource Block with identical time resource and frequency resource, the method comprises the steps: to generate based on following equation the step of random seed, and this equation is

by described random seed, scramble sequence is carried out to initialized step; And described in using, carried out initialized scramble sequence and described signal has been carried out to the step of scrambling, in described equation, Max=Maxim_value (cell_id), Max represents the maximum of sending point ID, c _initrepresent described random seed, n _srepresent timeslot number, n_RNTI represents user equipment specific ID.

In another aspect of the present invention, it is sending point device, the signal that is assigned to the predetermined Radio Resource of at least one deck Resource Block with identical time resource and frequency resource is sent to subscriber equipment, this sending point device comprises: random seed generation unit, and based on equation

generate random seed; Initialization unit, carries out initialization by described random seed to scramble sequence; Scrambling unit, has carried out initialized scramble sequence described in use described signal has been carried out to scrambling; And sending and receiving unit, the described Resource Block that has carried out the signal of scrambling described in transmission is had sends to subscriber equipment, in described equation, and Max=Maxim_value (cell_id), Max represents the maximum of sending point ID, c _initrepresent described random seed, n _srepresent timeslot number, n_RNTI represents user equipment specific ID.

Another aspect of the present invention is subscriber equipment, from sending point, receive the signal that sends the predetermined Radio Resource that is assigned at least one deck Resource Block with identical time resource and frequency resource, this subscriber equipment comprises: sending and receiving unit, receives described Resource Block from described sending point; And demodulating unit, in time domain and/or frequency domain, detect described Resource Block and obtain described signal, described signal is used and has carried out initialized scramble sequence by scrambling by random seed, and described random seed generates based on following equation:

in described equation, Max=Maxim_value (cell_id), Max represents the maximum of sending point ID, c _initrepresent described random seed, n _srepresent timeslot number, n_RNTI represents user equipment specific ID.

Another aspect of the present invention is for signal being carried out to the method for scrambling, this signal is assigned to the predetermined Radio Resource of at least one deck Resource Block with identical time resource and frequency resource, the method comprises the steps:, from the second random seed and the first random seed based on sending point ID generation, to select the step of random seed; Random seed by described selection carries out initialized step to scramble sequence; And described in using, carried out initialized scramble sequence and described signal has been carried out to the step of scrambling.

Another aspect of the present invention is sending point device, the signal that is assigned to the predetermined Radio Resource of at least one deck Resource Block with identical time resource and frequency resource is sent to subscriber equipment, this sending point device comprises: selected cell, from the second random seed and the first random seed based on sending point ID generation, select random seed; Initialization unit, the random seed by described selection carries out initialization to scramble sequence; Scrambling unit, has carried out initialized scramble sequence described in use described signal has been carried out to scrambling; And sending and receiving unit, the described Resource Block that has carried out the signal of scrambling described in having is sent to described subscriber equipment.

Another aspect of the present invention is subscriber equipment, from sending point, receive the signal that sends the predetermined Radio Resource that is assigned at least one deck Resource Block with identical time resource and frequency resource, this subscriber equipment comprises: sending and receiving unit, one deck Resource Block at least described in receiving from described sending point; And demodulating unit, in time domain and/or frequency domain, detect described Resource Block and obtain described signal, described signal is used and has carried out initialized scramble sequence by scrambling by random seed, and described random seed is selected from the second random seed and the first random seed based on sending point ID generation.

Of the present disclosure be for signal being carried out to the method for scrambling aspect another, this signal is assigned to the predetermined Radio Resource of at least one deck Resource Block with identical time resource and frequency resource, the method comprises the steps: to send to subscriber equipment by high-level signaling the step of ID table, described ID table is the subset in all ID space, comprises the ID that described subscriber equipment can be used; The step to the ID that will use in ID table described in described notification of user equipment by physical layer signaling or user equipment specific high-level signaling; ID based on described notice generates the step of random seed; By described random seed, scramble sequence is carried out to initialized step; And described in using, carried out initialized scramble sequence and described signal has been carried out to the step of scrambling.

Another aspect of the present invention is sending point device, the signal that is assigned to the predetermined Radio Resource of at least one deck Resource Block with identical time resource and frequency resource is sent to subscriber equipment, this sending point device comprises: notification unit, the ID that will use in described notification of user equipment ID being shown by physical layer signaling or user equipment specific high-level signaling, described ID table sends to described subscriber equipment by high-level signaling, described ID table is the subset in all ID space, comprises the ID that described subscriber equipment can be used; Random seed generation unit, the ID based on described notice generates random seed; Initialization unit, carries out initialization by described random seed to scramble sequence; Scrambling unit, has carried out initialized scramble sequence described in use described signal has been carried out to scrambling; And sending and receiving unit, the described Resource Block that has carried out the signal of scrambling described in having is sent to described subscriber equipment.

Another aspect of the present invention is subscriber equipment, from sending point, receive the signal that sends the predetermined Radio Resource that is assigned at least one deck Resource Block with identical time resource and frequency resource, this subscriber equipment comprises: sending and receiving unit, from described sending point device, receive described Resource Block, and physical layer signaling or user equipment specific high-level signaling, described physical layer signaling or described user equipment specific high-level signaling are to the ID that will use in described notification of user equipment ID table, described ID table sends to described subscriber equipment by high-level signaling, described ID table is the subset in all ID space, comprise the ID that described subscriber equipment can be used, and demodulating unit, in time domain and/or frequency domain, detect described Resource Block and obtain described signal, described signal is used and has carried out initialized scramble sequence by scrambling by random seed, and the ID of described random seed based on described notice is generated.

In the present invention, by generating for the scramble sequence of DMRS is carried out to initialized random seed based on UE special I D or group ID, under JT scene, guaranteed the identical DMRS from a plurality of sending points, and guaranteed the different DMRS from adjacent sending point under non-CoMP scene.And, by switching between the DMRS random seed at version 10 and the special-purpose DMRS random seed of UE, when operating, MU can carry out blind Detecting, and can maintain the orthogonality between UE, on the other hand, when non-MU operation, the problem that the contradiction in the time of also can solving JT and non-CoMP operation requires.And group ID and the blind Detecting space of UE notice being used by combination physical layer signaling and high-level signaling, can carry out the blind Detecting of UE, and reduce signaling consumption.

Above-mentioned is summary, so must comprise the omission of simplification, vague generalization and details; Therefore, it will be understood to those of skill in the art that above-mentioned summary is only for illustrative is limited absolutely not.This device of explanation and/or other side, feature and the advantage of process and/or other theme will be more distinct in aftermentioned explanation herein.Above-mentioned summary, for introducing key concept in concise and to the point mode, will be described in further detail in embodiment below this.This summary is not intended to confirm key feature or the substantive characteristics of claim, is also not intended to for assisting to determine the scope of claim.

Accompanying drawing explanation

Above-mentioned and further feature of the present invention becomes more distinct by the following explanation by based on accompanying drawing and appended claims.Accompanying drawing is only described several execution modes in the disclosure, thus be not restriction on its scope, by using accompanying drawing to be explained supplementary features of the present invention and details.

Fig. 1 means that an example carried out the schematic diagram of multiplexing DMRS.

Fig. 2 means the schematic diagram of a routine JT scene.

Fig. 3 means the schematic diagram of a routine non-CoMP scene.

Fig. 4 means the schematic diagram that JT scene and non-CoMP scene are compared.

Fig. 5 means the schematic diagram of a routine MU-MIMO scene.

Fig. 6 means the schematic diagram of a routine blind Detecting.

Fig. 7 means the block diagram of the sending point device of first embodiment of the invention.

Fig. 8 means the block diagram of the UE of first embodiment of the invention.

Fig. 9 means that an example carried out the schematic diagram of multiplexing MU-MIMO DMRS.

Figure 10 means according to the block diagram of the sending point device of the 3rd execution mode of the present disclosure.

That Figure 11 represents to define in TS36.212, for the table of the DMRS port to UE notification version 10 and DMRS random seed.

Figure 12 illustrates the table to the selection of UE notification version 10 random seeds and the special-purpose random seed of UE according to the 3rd execution mode of the present disclosure.

Figure 13 illustrates another table to the selection of UE notification version 10 random seeds and the special-purpose random seed of UE according to the 3rd execution mode of the present disclosure.

Figure 14 means according to the figure of the flow process of the method for the scrambled signals of fifth embodiment of the invention.

Figure 15 means according to the figure of the flow process of the method for the scrambled signals of sixth embodiment of the invention.

Figure 16 means the schematic diagram of setting according to the group ID of seventh embodiment of the invention.

Figure 17 illustrates an example and the structuring group ID of UE setting is shown by high-level signaling according to ninth embodiment of the invention.

Figure 18 represents according to the table of the part I for physical layer signaling of tenth embodiment of the invention.

Figure 19 represents according to the table of the part III for physical layer signaling of eleventh embodiment of the invention.

Figure 20 A and 20B mean that UE moves to Shi， sending point, edge and uses the schematic diagram of the complete example the situation that high-level signaling and physical layer signaling set UE defined as execution mode 9 and execution mode 10 from the center of sending point.

Figure 21 means according to the schematic diagram of situation eleventh embodiment of the invention, that physical layer signaling is lost because of PDCCH failure.

Figure 22 mean according to eleventh embodiment of the invention, by and Ack/Nck mechanism combine to avoid the schematic diagram of the nonsynchronous situation between eNB and UE.

Figure 23 illustrates structuring " x " the ID table that an example is set UE by high-level signaling according to twelveth embodiment of the invention.

Figure 24 means according to the figure of the flow process of the method for the scrambled signals of thirteenth embodiment of the invention.

Embodiment

Following embodiment is with reference to the accompanying drawing of the part as execution mode.If not context is otherwise noted in accompanying drawing, similarly label represents similar key element conventionally.Easily understand, each aspect of the present invention can arrange, replaces, combines and be designed to various different structures, and all can obviously be expected, and belongs to a part of the present invention.

(the first execution mode)

Fig. 7 means according to the block diagram of the sending point device of first embodiment of the invention.

According to the sending point device 700 of first embodiment of the invention for communicating with UE in communication system.Device 700 couples of UE in sending point send RS signal, and above-mentioned RS signal is assigned to the precalculated position (Radio Resource, i.e. subcarrier, subframe equal time and/or frequency resource) of at least one deck Resource Block with identical time resource and frequency resource.As shown in Figure 7, sending point device 700 can comprise random seed generation unit 701, initialization unit 702, scrambling unit 703 and sending and receiving unit 704.Random seed generation unit 701 generates random seed based on UE special I D.The random seed that initialization unit 702 generates by random seed generation unit 701 carries out initialization to scramble sequence.Scrambling unit 702 is used in and in initialization unit 702, has carried out initialized scramble sequence signal is carried out to scrambling.704 pairs of sending and receiving unit UE sends Resource Block, and this Resource Block has the signal that has carried out scrambling in scrambling unit 703.It is noted that the RS signal here can be the RS signal such as any kind such as DMRS.For brevity, below explanation in as an example using DMRS as object.

According to sending point of the present invention device 700, can also comprise: CPU (Central Processing Unit, central processing unit) 710, it carries out relative program to process various data, and controls the operation of each unit of sending point device 700; ROM (Read Only Memory, read-only memory) 713, its storage CPU710 carries out various processing and controls required various programs; RAM (Random Access Memory, random access memory) 715, its storage CPU710 interim intermediate data producing in the process of processing and controlling; And/or I/O (Input/Output, I/O) unit 717, it inputs or outputs various programs, data etc.Above-mentioned random seed generation unit 701, initialization unit 702, scrambling unit 703, sending and receiving unit 704, CPU710, ROM713, RAM715 and/or I/O unit 717 etc. can interconnect and at signal transmission each other via data and/or command line 720.

Each unit as above does not limit the scope of the invention.According to an embodiment of the present invention, in above-mentioned random seed generation unit 701, initialization unit 702, scrambling unit 703 and sending and receiving unit 704, the function of any one also can be implemented by functional software in conjunction with above-mentioned CPU710, ROM713, RAM715 and/or I/O unit 717 etc.

The action of the initialization unit 702 in sending point device 700, scrambling unit 703 and sending and receiving unit 704 is well known to those skilled in the art, and therefore for fear of obscuring mutually with original creation part of the present invention, description is omitted herein.Below the operation of the random seed generation unit 701 to sending point device 700 is elaborated.

Above-mentioned random seed generation unit 701, when generating the random seed of the scramble sequence that is used for initialization RS signal, is not to use sending point ID as shown in equation (1), but based on UE special I D.Here, this UE special I D can be IMSI(International Mobile Subscriber Identification Number, international mobile subscriber identification number) etc. global UE specific identity number.Or, in the time of can being also the UE such as c-RNTI (Cell_Radio Network Temporary Identifier, Cell Radio Network Temporary Identifier/Identity, Cell-RNTI) access LTE network, distribute to the UE special I D of UE.

As an example, equation (2) generates the scramble sequence of RS signal is carried out to initialized random seed based on c-RNTI for as follows.

Wherein, c _initrepresent the random seed generating, n _srepresent timeslot number, n_RNTI is the parameter defining in 3GPP TS36.213, represents UE special I D.It should be noted that parameter " c_RNTI " means the subset of a plurality of different RNTI " n_RNTI ", in most cases " n_RNTI " is " c_RNTI ".Like this, random seed generation unit 701 can pass through equation (2) generation random seed.

Known for generating the above-mentioned equation (1) of DMRS random seed in the equation (2) of contrast in present embodiment and version 10, the parameter c ell_id in equation (1) is not included in equation (2).Like this, under the JT scene shown in Fig. 4 and non-CoMP scene, the conflicting requirement about DMRS random seed is resolved by use equation (2).Particularly, under JT scene, adjacent sending point (community) all use UE special I D generate DMRS random seed and and then generate scramble sequence, even thereby they when thering is different sending point ID, also there is identical DMRS.Under non-CoMP scene, different UEs has different UE special I D, these different UE special I D are used for generating DMRS random seed also and then generate scramble sequence, even if thereby also there is different DMRS when thering is identical sending point ID, like this, the overlapping DMRS of adjacent sending point has different scramble sequence, with the ICI to potential, carries out randomization.

Fig. 8 means according to the block diagram of the UE of first embodiment of the invention.The UE800 of first embodiment of the invention is for communicating at communication system and sending point device.UE800 receives RS signal from sending point device, and above-mentioned RS signal is assigned to the precalculated position (Radio Resource, i.e. subcarrier, subframe equal time and/or frequency resource) of at least one deck Resource Block with identical time resource and frequency resource.As shown in Figure 8, UE800 can comprise sending and receiving unit 801 and demodulating unit 802.801Cong sending point, sending and receiving unit device receives Resource Block.Demodulating unit 802 detects Resource Block to obtain RS signal in time domain and/or frequency domain, and these signals are by scramble sequence scrambling, and above-mentioned scramble sequence is carried out initialization by the random seed generating based on UE special I D.

As above, about as described in sending point device 700, can for example generate, for the scramble sequence of RS signal (DMRS) is carried out to initialized random seed by the UE special I D such as c-RNTI based on shown in equation (2).That is,, according to present embodiment, can generate random seed according to equation (2).It should be noted that equation (2) is only example, UE special I D is not limited to c-RNTI, can also be other UE special I D unlisted in IMSI or the present invention.

UE800 of the present invention can also comprise: CPU (Central Processing Unit, central processing unit) 810, and it carries out the operation of relative program to process various data and to control each unit of UE800; ROM (Read Only Memory, read-only memory) 813, its storage CPU810 carries out various processing and controls required various programs; RAM (Random Access Memory, random access memory) 815, its storage CPU810 interim intermediate data producing in the process of processing and controlling; And/or I/O unit 817, it inputs or outputs various programs, data etc.Above-mentioned sending and receiving unit 801, demodulating unit 802, CPU810, ROM813, RAM815 and/or I/O unit 817 etc. can interconnect and at signal transmission each other via data and/or command line 820.

Each unit as above does not limit the scope of the invention.According to an embodiment of the present invention, in above-mentioned sending and receiving unit 801 and demodulating unit 802, the function of any one also can be implemented by functional software in conjunction with above-mentioned CPU810, ROM813, RAM815 and/or I/O unit 817 etc.

According to present embodiment, by generating for the scramble sequence of RS signal is carried out to initialized random seed based on UE special I D, the problem requiring about the contradiction of DMRS random seed under JT scene shown in Fig. 4 and non-CoMP scene is resolved,, under JT scene, guarantee the identical DMRS from a plurality of sending points, and under non-CoMP scene, guaranteed the different DMRS from adjacent sending point.

(the second execution mode)

Contrast the equation (1) generating for DMRS random seed in the equation (2) that proposes in the first execution mode and version 10 known, the random seed generating according to equation (2) likely clashes with the random seed generating according to equation (1), because the scope of the parameter n_RNTI in equation (2) is 0～216-1.The UE of version 10 is distributed to the random seed generating according to equation (1) in consideration, and will according to the random seed of equation (2) generation, distribute to the situation of the UE of version 11, if distributed the UE of the version 10 of the random seed generating according to equation (1) to coexist with having distributed the UE of the version 11 of the random seed generating according to equation (2), this conflict can cause problem.

In order to solve above-mentioned collision problem, equation (3) provides an example to the improvement of the equation in the first execution mode (2) as follows.

Wherein, Max=Maxim_value (cell_id), Max represents the maximum of sending point ID, identical with equation (2) of parameter c init, ns and n_RNTI.

This equation (3) and equation (1) are easily found, due to the maximum of the parameter Max in equation (3) corresponding to cell_id, thus Max>=cell_id, therefore, 2*Max+1>=2cell_id+1, like this,

and then the parameter S CID in equation (1) is generally set as 0 or 1, so SCID<2.Thereby,

therefore, certainly, the random seed generating according to equation (3) is greater than the DMRS random seed of the version 10 generating according to equation (1) all the time.By using random seed to generate equation (3), above-mentioned random seed collision problem can be resolved.It should be noted that equation (3) is only an example to the improvement of equation (2), the solution of above-mentioned random seed collision problem is not limited to this.For example, the constant " 2 " in equation (3) is critical value, can be replaced into the Arbitrary Digit that is greater than 2.Therefore,, according to present embodiment, for example, for example, for sending point device (700) or UE (800), can generate random seed according to equation (3).

According to present embodiment, by the special-purpose random seed of the UE to the second execution mode, generating equation (2) improves, can avoid conflicting between the special-purpose random seed of UE and version 10 random seeds, under the JT scene shown in Fig. 4 and non-CoMP scene, the problem about the contradiction requirement of DMRS random seed is also resolved simultaneously.

(the 3rd execution mode)

As mentioned above, receiving terminal can help UE to estimate to disturb in MU-MIMO operation to the blind Detecting of DMRS.But if use equation (2) or (3) to generate DMRS random seed, UE possibly cannot carry out blind Detecting, because the candidate of the random seed of UE special use is too much in this case, or blind Detecting space is excessive.For example, because the value of n_RNTI in above-mentioned equation (2) and equation (3) has 216 kinds of candidates, so have 216 kinds of candidates according to the random seed of equation (2) or (3) generation, consequently, the dimension of DMRS generates the situation of Fig. 6 of equation (1) far away more than the DMRS random seed that uses version 10.In the situation that the dimension of DMRS is too much, be difficult to carry out the blind Detecting of DMRS.

Another problem of equation (2) and equation (3) is the orthogonality between the DMRS port of MU-MIMO.As shown in Figure 5, the in the situation that of MU-MIMO, having two UE is UE1 and UE2.Suppose UE1 to distribute DMRS port 7 (OCC[1,1]), UE2 is distributed to DMRS port 8 (OCC[1 ,-1]), and UE1 and UE2 set by the special-purpose random seed of UE generating according to equation (2) or (3).Therefore, as shown in Figure 9, two different sequences are become respectively the DMRS port (port 7 and 8) of two quadratures by scrambling.Fig. 9 means that an example carried out the schematic diagram of multiplexing MU-MIMO DMRS.In Fig. 9, corresponding to OCC[1,1] port 7 is by scramble sequence [A1, B1 ... ] scrambling, and corresponding to OCC[1 ,-1] port 8 by scramble sequence [C1, D1 ... ] scrambling.Two scramble sequence are carried out initialization by two different random seeds respectively, and these two different random seeds generate according to above-mentioned equation (2) or (3) based on each UE special I D.Here, if (A1*) C1+ (B1*) D1=0 or [A1, B1] ⊥ [C1, D1], the orthogonality between two DMRS ports is destroyed.Therefore, the in the situation that of this MU-MIMO, in order to maintain the DMRS orthogonality between MU UE, for example, if the DMRS port (port 7 and port 8) that two MU UE have been distributed to quadrature needs them to use identical scramble sequence.

Above with reference to Fig. 5 and Fig. 6, illustrated under the design of the DMRS of version 10 random seed and can carry out blind Detecting, under the circumstances, the basic thought of present embodiment is to switch at the DMRS random seed of the version 10 generating according to equation (1) and between according to the special-purpose DMRS random seed of the UE of equation (3) generation, thereby solves the above-mentioned two problems running into while generating DMRS random seed based on UE special I D.Particularly, when UE carries out MU-MIMO operation, system is used according to the random seed generation equation (1) of version 10 DMRS random seed that generate, version 10 and is set UE, otherwise, use the special-purpose random seed of the UE generating according to equation (3) to set UE.

The advantage of carrying out this switching is: when UE carries out MU operation, by using the random seed of version 10, can carry out blind Detecting, and maintain the orthogonality between UE; When UE does not carry out MU operation, conflicting requirement when the special-purpose random seed of UE can meet JT and non-CoMP operation.

Figure 10 means according to the block diagram of the sending point device of third embodiment of the invention.The sending point device 1000 of third embodiment of the invention is for communicating with UE in communication system.Same with the sending point device 700 of the first execution mode, device 1000 couples of UE in sending point send RS signal, above-mentioned RS signal is assigned to the precalculated position (Radio Resource, i.e. subcarrier, subframe equal time and/or frequency resource) of at least one deck Resource Block with identical time resource and frequency resource.As shown in figure 10, sending point device 1000 can comprise selected cell 1001, initialization unit 1002, scrambling unit 1003 and sending and receiving unit 1004.Selected cell 1001 is selected random seed from the first random seed generating based on sending point ID and the second random seed generating based on UE special I D.The random seed that initialization unit 1002 is selected by selected cell 1001 carries out initialization to scramble sequence.Scrambling unit 1003 uses have been carried out initialized scramble sequence signal have been carried out to scrambling in initialization unit 1002.1004 pairs of sending and receiving unit UE sends Resource Block, and this Resource Block has the signal that has carried out scrambling in scrambling unit 1003.It is noted that the RS signal here can be the RS signal such as any kind of DMRS etc.

According to sending point of the present invention device 1000, can also comprise CPU1010, ROM1013, RAM1015 and/or I/O unit 1017, the sending point device 700 of these key elements and the first execution mode identical.For brevity, omit the explanation of the function of these key elements here.In addition, above-mentioned selected cell 1001, initialization unit 1002, scrambling unit 1003, sending and receiving unit 1004, CPU1010, ROM1013, RAM1015 and/or I/O unit 1017 etc. also can interconnect and at signal transmission each other via data and/or command line 1020.

Each unit as above does not limit the scope of the invention.According to an embodiment of the present invention, in above-mentioned selected cell 1001, initialization unit 1002, scrambling unit 1003 and sending and receiving unit 1004, the function of any one also can be implemented by functional software in conjunction with above-mentioned CPU1010, ROM1013, RAM1015 and/or I/O unit 1017 etc.

According to present embodiment, UE shown in Fig. 8 also can receive Resource Block and obtain signal from sending point device 1000, this signal carries out scrambling by having carried out initialized scramble sequence by random seed, and this random seed is selected to obtain from the first random seed generating based on sending point ID and the second random seed generating based on UE special I D.

In order to realize the DMRS random seed of version 10 and the switching between the special-purpose DMRS random seed of UE, should be useful on the signaling of UE being notified to this switching.A simple method is in existing PHY (physics) signaling, to increase by 1 bit signalling mark for switching.It should be noted that and notify the method for this switching to be not limited to said method to UE.

According to present embodiment, although not shown in Figure 10, sending point device 1000 can also comprise notification unit, by increasing by 1 bit signalling as switch flag, and the switching (selection) between notifying user equipment the first random seed and the second random seed.The first random seed can generate according to equation (1).The second random seed is different from the first random seed.The second random seed can generate according to equation (3).

According to present embodiment, although not shown in Fig. 8, the all right receipt message in sending and receiving unit 802 in subscriber equipment 800, this message is used as 1 bit signalling of switch flag, indicate the selection of the first random seed and the second random seed, wherein, the first random seed can generate according to equation (1), the second random seed is different from the first random seed, and the second random seed can generate according to equation (3).

According to present embodiment, by switching between the DMRS random seed at version 10 and the special-purpose DMRS random seed of UE, when operating, MU can carry out blind Detecting, and can maintain the orthogonality between UE, on the other hand, when non-MU operation, the problem that the contradiction in the time of also can solving JT and non-CoMP operation requires.

Stress the how selection to the DMRS random seed of UE notification version 10 and the special-purpose DMRS random seed of UE below.

That Figure 11 represents to define in TS36.212, for the table of the DMRS port to UE notification version 10 and DMRS random seed.As shown in figure 11, this table is divided into two parts, and left part is corresponding to the situation of 1 code word, and right side part is corresponding to the situation of 2 code words.In left part (situation of 1 code word), left hurdle provides 8 values 0～7 in 1 code word, and right hurdle represents the message of these value representations.Except be worth 7 be retained, other 7 values 0～6 represent respectively the various combination of DMRS port and DMRS random seed.Particularly, be worth 1 layer of transmission that port 7 is used in 0 expression, and SCID=0; Value 1 represents to use 1 layer of transmission of port 7, and SCID=1; Value 2 represents to use 1 layer of transmission of port 8, and SCID=0; Value 3 represents to use 1 layer of transmission of port 8, and SCID=1; Value 4 represents to use 2 layers of transmission of port 7～8, and SCID=0; Value 5 represents to use 3 layers of transmission of port 7～9, and SCID=0; Value 6 represents to use 4 layers of transmission of port 7～10, and SCID=0.

The right side part of the table in Figure 11 (situations of 2 code words) is similar with left part.That is, 8 values 0～7 in 2 code words represent respectively 8 kinds of various combinations of DMRS port and DMRS random seed.Particularly, be worth 2 layers of transmission that port 7～8 is used in 0 expression, and SCID=0; Value 1 represents to use 2 layers of transmission of port 7～8, and SCID=1; Value 2 represents to use 3 layers of transmission of port 7～9, and SCID=0; Value 3 represents to use 4 layers of transmission of port 7～10, and SCID=0; Value 4 represents to use 5 layers of transmission of port 7～11, and SCID=0; Value 5 represents to use 6 layers of transmission of port 7～12, and SCID=0; Value 6 represents to use 7 layers of transmission of port 7～13, and SCID=0; Value 7 represents to use 8 layers of transmission of port 7～14, and SCID=0.

In PHY signaling, by wave point, send different values.UE receives different values, and according to the table of Figure 11, explains the implication of these values.

Known according to Figure 11, in most of the cases SCID equals 0, corresponding to the situation of the value 0,2 in the left part of 1 code word and 4～6 with corresponding to the value 0 in the right side part of 2 code words and 2～7 situation, expect accordingly the hint signaling that SCID can select UE notice random seed with work.Figure 12 illustrates the table to the selection of UE notification version 10 random seeds and the special-purpose random seed of UE according to present embodiment.In Figure 12, in two kinds of situations of 1 code word and 2 code words, all use the message of 8 value representation versions 11.

Known by the contrast table of Figure 12 and the table of Figure 11, " SCID=0 " in Figure 11 is replaced by " the special-purpose seed of UE " (the special-purpose random seed of UE) in the message of version 11 in Figure 12, and " SCID=1 " in Figure 11 is replaced by " version 10 seeds (SCID=0) " (version 10 random seeds) in Figure 12.Here, " version 10 seeds (SCID=0) " represent following equation (4), and this equation obtains by SCID being set as to 0 in equation (1).

Wherein, parameter

be equivalent to the parameter c ell_id in equation (1), represent the value of sending point ID." the special-purpose seed of UE " in Figure 12 refers to the random seed generating according to equation (3) based on UE special I D." SCID " in the table of table use Figure 11 shown in table 12 is as hint signaling, with the selection to the random seed of UE notification version 10 and the special-purpose random seed of UE.That is, when the SCID in Figure 11 is 0, represent to select the special-purpose random seed of UE, when the SCID in Figure 11 is 1, represent version 10 random seeds that selective basis equation (4) generates.

Like this, according to present embodiment, by using SCID as switch flag, can be in the situation that do not increase the signaling mark of 1 bit, the switching (selection) by existing PHY signaling to UE notification version 10 random seeds and the special-purpose random seed of UE.

It should be noted that the table shown in Figure 12 is only an example.Easily understand, after " value " in the table of Figure 12 and the relation between " message " are rearranged, can obtain and former identical effect.But after rearranging, " SCID " cannot be interpreted as switch flag.

The DMRS random seed that it should be noted that version 10 has two kinds of candidates, i.e. SCID=0 (equation (4)) and SCID=1.But in the table of Figure 12, when being switched to the DMRS random seed of version 10 (version 10 seeds), only maintained the situation of SCID=0.Known with reference to figure 6, if now can carry out blind Detecting,, according to the only situation of SCID=0 and the combination of two OCC ([1,1] and [1 ,-1]), the dimension of blind Detecting only has 2.Yet in fact version 10 supports the blind Detecting of 4 dimensions.

In the present embodiment, in order to overcome the above-mentioned restriction of the blind Detecting dimension in the table of Figure 12, can revise the table (table of Figure 11) defining in TS36.212, rather than introduce the new bit of the switch flag for UE notice RS random seed is switched.

Present embodiment starts from the analysis of the table to Figure 12.First can find that the value 7 in 1 code word situation is retentions.Secondly, port 7 (OCC[1,1]) and port 8 (OCC[1 ,-1]) all can be supported UE special use random seed.In addition, in non-MU operation, the in the situation that of (comprising JT operation and non-CoMP operation), described in execution mode 1 and 2, use the special-purpose random seed of UE can obtain required effect, and in the situation that MU operates, DMRS random seed is switched to version 10 random seeds.Therefore can reach a conclusion, use the special-purpose random seed of UE to set and can obtain required effect the one in port 7 and 8.

Based on above-mentioned analysis, the basic thought of present embodiment is as follows.1) the DMRS random seed of 1 layer of transmission is identical with the DMRS random seed in version 10 under MU scene; 2) utilize the retention 7 in the table of existing signaling of Figure 11; 3), under non-MU scene, use the special-purpose random seed of UE to set the one in port 7 or port 8 (but not to port 7 and port 8 both sides).Figure 13 illustrates another table to the switching (selection) of UE notification version 10 random seeds and the special-purpose random seed of UE according to present embodiment.Table shown in Figure 13 is the improvement to the table shown in Figure 12.In the present embodiment, the only left part of the table in Figure 12 (situation of 1 code word) is modified, and right side part (situations of 2 code words) remains unchanged, and therefore for brevity, amended left part is only shown in Figure 13.

In Figure 13, in the situation that MU operates, version 10 random seeds are common version 10 random seeds that generate according to equation (1).That is, identical corresponding to the message corresponding to value 0～3 in the message of value 0～3 and the table of Figure 11.Like this, guaranteed the blind Detecting of 4 dimensions.Identical corresponding to the message corresponding to value 4～6 in the message of value 4～6 and the table of Figure 12 in Figure 13, wherein the special-purpose random seed of UE is the random seed generating according to equation (3).The value 7 being retained in Figure 11 and Figure 12 represents to use 1 layer of transmission of port 7 and the situation of the special-purpose seed of UE in Figure 12.Owing to having used retention, and in sending, order 1 use the special-purpose random seed of UE only to set a port (for example port 7), so can maintain common version 10 random seeds in the table shown in Figure 13.Here, the value of it is noted that 7 also can represent to use 1 layer of transmission of port 8 and the situation of the special-purpose seed of UE.

According to present embodiment, MU blind Detecting space is identical with the MU blind Detecting space in version 10, meanwhile, need not introduce new signaling bit and come UE notice DMRS random seed to switch.

The table that it is noted that Figure 13 is only an example, after " value " in this table and the relation between " message " are rearranged, can obtain the effect identical with above-mentioned effect.In addition, those skilled in the art are to be understood that, in the order 1 of MU scene sends, use the special-purpose random seed of UE to set a port (port 7 or port 8) and can obtain required effect, in this meaning, can only maintain value " 0 " in the table of Figure 12 or the one in " 2 ".Particularly, the in the situation that of the value of maintaining 0, by use value 1～3 and 7, can represent respectively 4 kinds of combinations of 1 layer of different port in transmission and different version 10 random seeds.Similarly, the in the situation that of the value of maintaining 2, by use value 0,1,3 and 7, can represent respectively 4 kinds of combinations of 1 layer of different port in transmission and different version 10 random seeds.

Above-mentioned example is all paid close attention to the situation of the DMRS of downgoing line.In fact, in the situation of the DMRS of uplink, also produce similar problem.For example, in UL (uplink, the uplink) DMRS in PUSCH (Physical Uplink Shared Channel, physical uplink Line sharing channel) situation, scramble sequence is carried out initialization by the random seed based on sending point ID.If adjacent sending point has identical sending point ID, between adjacent sending point, the DMRS of PUSCH may phase mutual interference.In the case, use the special-purpose random seed of UE based on UE special I D such as n_RNTI, be better than using the special-purpose random seed in sending point based on for example sending point ID.

According to present embodiment, uplink RS signal can carry out initialized scramble sequence by the random seed by generating based on UE special I D and carry out scrambling.

According to present embodiment, uplink RS signal also can carry out scrambling by having carried out initialized scramble sequence by random seed, and this random seed is selected to obtain from the first random seed generating based on sending point special I D and the second random seed generating based on UE special I D.

RS (for example DMRS) design is all paid close attention in above-mentioned explanation.In fact, scrambling is also applicable to data channel and control channel, data channel is PDSCH (Physical Downlink Shared Channel for example, physical down Line sharing channel) or PUSCH, control channel is PDCCH (Physical Downlink Control Channel for example, physical down circuit control channel) or PUCCH (Physical Uplink Control Channel, physical uplink circuit control channel).Use has been carried out by random seed the potential ICI that initialized scramble sequence carries out between scrambling ，Yi Dui community or sending point data or control channel and has been carried out randomization.Random seed also includes sending point ID in generating.Thereby if neighbor cell or sending point have different sending point ID, JT operation will run into problem as above.In the case, using the special-purpose random seed of UE based on UE special I D to carry out initialization to scramble sequence is also a solution.

According to present embodiment, for example, for example, for sending point device (700,1000) or UE (800), signal can be the one in the control signal of RS, control channel and the data-signal of data channel., according to present embodiment, signal (any one in the control signal of control channel or the data-signal of data channel) can carry out scrambling by having carried out initialized scramble sequence by random seed, this random seed generates based on UE special I D, or according to present embodiment, signal (any one in the control signal of control channel or the data-signal of data channel) can also carry out scrambling by having carried out initialized scramble sequence by random seed, this random seed is selected to obtain from the first random seed generating based on sending point special I D and the second random seed generating based on UE special I D.

In LTE (version 8,9) and senior LTE (version 10), CRS (the Control Reference Signal of the RS of downgoing line control channel (PDCCH) based on for demodulation, control reference signal), and CRS is not by precoding, is sending point special use.Yet at version 11 or more in highest version, by utilizing DMRS to call reference signal as solution, PDCCH is enhanced to E-PDCCH (Enhanced PDCCH strengthens PDCCH).In the case, above-mentioned idea also can be applicable to the DMRS based on E-PDCCH as follows.1) can generate DMRS random seed based on UE special I D; 2) can for example, between the special-purpose random seed of UE and the special-purpose random seed in sending point (version 10 random seeds), switch DMRS random seed.

Except above-mentioned reason, another advantage of the DMRS random seed based on UE special I D generation E-PDCCH is as follows.When UE detects E-PDCCH, because E-PDCCH is control channel, so the unclear possible DMRS of UE sets.Like this, if E-PDCCH is used the DMRS random seed of version 10, which in " supposition " its use SCID=0 or SCID=1 UE at least need.Yet if E-PDCCH is used the special-purpose DMRS random seed of UE, UE knows DMRS random seed when detecting E-PDCCH, because the UE special I D such as c-RNTI have distributed to UE when this stage.

(the 4th execution mode)

The above-mentioned first to the 3rd execution mode all uses the random seed generating based on UE special I D to carry out initialization to the scramble sequence for scrambled signals.Yet, it is noted that the ID that generates random seed is not limited to UE special I D.Can also generate random seed based on group ID (also can be called general ID).Group ID refers to that the group of UE can share an ID, and these are different as the situation of random seed with use UE special I D.As an example, equation (5) generates the scramble sequence of signal is carried out to initialized random seed based on group ID for as follows.

Wherein, cinit represents random seed, and ns represents timeslot number, and group_id represents to organize ID.

Contrast equation (5) and equation (1) are known, and the difference of two equatioies is that the cell_id in equation (1) is replaced by the group_id in equation (5), and does not comprise SCID in equation (5).Equation (1) in the situation that, UE for example, learns cell_id by the mode (broadcast channel) of sending point special use.Similarly, equation (5) in the situation that, can distribute group_id by sending point device, and the signaling that passes through UE special use is to UE.

By using group_id, by sending point, UE is distributed respectively to identical or different group_id, can meet the requirement of random seed, different random seed when the identical random seed while operating comprising the JT shown in Fig. 4 and non-CoMP operation.

But in MU operation, the UE of the UE of version 11 and version 10 can coexist sometimes.In the case, if the UE of version 11 is used the random seed generating by equation (5), the UE of version 10 cannot carry out blind Detecting under the MU of the UE of version 11 disturbs.In order to address this problem, the thought of above-mentioned the 3rd execution mode also can be for present embodiment.That is,, in the situation that MU operates, use version 10 random seeds that generate by equation (1) based on sending point ID to carry out initialization to the scramble sequence for scrambled signals.In other cases, for example, when JT operation and non-CoMP operate, use the random seed generating by equation (5).

According to present embodiment, sending point device (for example 1000) can also comprise notification unit, this notification unit by UE dedicated signaling to UE group of notifications ID.The second random seed is according to comprising equation (5) generation of organizing ID.

According to present embodiment, for example, in UE (800), sending and receiving unit can also receive from sending point the UE dedicated signaling that indicate group ID.According to comprising the equation (5) of organizing ID, generate the second random seed.

(the 5th execution mode)

Figure 14 means according to the figure of the flow process of the method for the scrambled signals of fifth embodiment of the invention.

As shown in figure 14, according to the method 1400 of fifth embodiment of the invention, for signal is carried out to scrambling, this signal is assigned to the predetermined Radio Resource of at least one deck Resource Block with identical time resource and frequency resource.In step S1401, based on UE special I D, generate random seed.In step S1402, by this random seed, scramble sequence is carried out to initialization.In step S1403, use has been carried out initialized scramble sequence signal has been carried out to scrambling.

According to present embodiment, can carry out above-mentioned steps S1401 by random seed generation unit 701, can carry out above-mentioned steps S1402 by initialization unit 702, can carry out above-mentioned steps S1403 by scrambling unit 703.

According to present embodiment, user equipment specific ID can be global user equipment specific identification number.

According to present embodiment, user equipment specific ID can be international mobile subscriber identification number (International Mobile Subscriber Identification Number, IMSI).

According to present embodiment, user equipment specific ID distributes to the user equipment specific ID of this subscriber equipment when user equipment access LTE network.

According to present embodiment, user equipment specific ID can be c-RNTI.

According to present embodiment, although not shown in Figure 14, method 1400 can also comprise the step that generates random seed based on equation (2).

According to present embodiment, although not shown in Figure 14, method 1400 can also comprise the step that generates random seed based on equation (3).

According to present embodiment, signal can be that the control signal of reference signal, control channel is, the one in the data-signal of data channel.

According to present embodiment, signal can be that solution is called reference signal (Demodulatioin Reference Signal).

According to present embodiment, although not shown in Figure 14, method 1400 can also comprise the Resource Block with the signal after scrambling is sent to subscriber equipment from sending point, or the step sending from subscriber equipment to sending point.This step can be carried out by the sending and receiving unit 704 of sending point device 700 and the sending and receiving unit of UE800 801.

According to present embodiment, by generating for the scramble sequence of signal is carried out to initialized random seed based on UE special I D, can solve the problem of the contradiction requirement of random seed under JT scene and non-CoMP scene.

(the 6th execution mode)

Figure 15 means according to the figure of the flow process of the method for the scrambled signals of sixth embodiment of the invention.

As shown in figure 15, according to the method 1500 of present embodiment, for signal is carried out to scrambling, this signal is assigned to the predetermined Radio Resource of at least one deck Resource Block with identical time resource and frequency resource.In step S1501, from the second random seed and the first random seed based on sending point ID generation, select random seed.In step S1502, the random seed by this selection carries out initialization to scramble sequence.In step S1503, use has been carried out initialized scramble sequence signal has been carried out to scrambling.

According to present embodiment, can carry out above-mentioned steps S1501 by selected cell 1001, can carry out above-mentioned steps S1502 by initialization unit 1002, can carry out above-mentioned steps S1503 by scrambling unit 1003.

According to present embodiment, the second random seed can generate by the group ID based on being distributed by sending point.

According to present embodiment, although not shown in Figure 15, method 1500 can also comprise the step to notification of user equipment group ID by user equipment specific signaling.Can carry out this step by the notification unit (not shown in Figure 10) of sending point device 1000.

According to present embodiment, can generate the second random seed according to equation (5).

According to present embodiment, can generate the second random seed based on user equipment specific ID.

According to present embodiment, method 1500 can also comprise that signaling by increasing by 1 bit, as switch flag, notifies the step of the selection of the first random seed and the second random seed to receiving terminal.Can carry out this step by the notification unit (not shown in Figure 10) of sending point device 1000.

According to present embodiment, method 1500 can also comprise the signaling of being set by 1 code word by using, and receiving terminal is notified to the step of the selection of the first random seed and the second random seed, and wherein, 7 values in this 1 code word are expressed as follows respectively 7 kinds of situations.That is, use 1 layer signal of the first ports-settings, and the second random seed; Use 1 layer signal of the first ports-settings, and the first random seed; Use 1 layer signal of the second ports-settings, and the second random seed; Use 1 layer signal of the second ports-settings, and the first random seed; Use 2 layer signals of the first and second ports-settings, and the second random seed; Use 3 layer signals of first, second and third ports-settings, and the second random seed; And 4 layer signals that use the first to the 3rd port and the 4th ports-settings, and the second random seed.Can carry out this step by the notification unit (not shown in Figure 10) of sending point device 1000.

According to present embodiment, method 1500 can also comprise the signaling of being set by 2 code words by using, and receiving terminal is notified to the step of the selection of the first random seed and the second random seed, and wherein, 8 values in these 2 code words are expressed as follows respectively 8 kinds of situations.That is, use 2 layer signals of the first and second ports-settings, and the second random seed; Use 2 layer signals of the first and second ports-settings, and the first random seed; Use 3 layer signals of first, second and third ports-settings, and the second random seed; Use 4 layer signals of first to fourth ports-settings, and the second random seed; 5 layer signals that use first to fourth port and five-port to set, and the second random seed; Use the first 6 layer signals to five-port and the 6th ports-settings, and the second random seed; Use 7 layer signals of the first to the 6th port and the 7th ports-settings, and the second random seed; And 8 layer signals that use the first to the 7th port and the 8th ports-settings, and the second random seed.Can carry out this step by the notification unit (not shown in Figure 10) of sending point device 1000.

According to present embodiment, according to equation (1), generate the first random seed.

According to present embodiment, method 1500 can also comprise the signaling of being set by 1 code word by using, and receiving terminal is notified to the step of the selection of the first random seed and the second random seed, and wherein, 8 values in this 1 code word are expressed as follows respectively 8 kinds of situations.That is, use 1 layer signal of the first ports-settings, and the first random seed of SCID=0; Use 1 layer signal of the first ports-settings, and the first random seed of SCID=1; Use 1 layer signal of the second ports-settings, and the first random seed of SCID=0; Use 1 layer signal of the second ports-settings, and the first random seed of SCID=1; Use 2 layer signals of the first and second ports-settings, and the second random seed; Use 3 layer signals of first, second and third ports-settings, and the second random seed; Use 4 layer signals of the first to the 3rd port and the 4th ports-settings, and the second random seed; And 1 layer signal that uses the first port or the second ports-settings, and the second random seed.Can carry out this step by the notification unit (not shown in Figure 10) of sending point device 1000.

According to present embodiment, the second random seed is different from the first random seed.

According to present embodiment, according to equation (3), generate the second random seed.

According to present embodiment, signal is that the control signal of reference signal, control channel is, the one in the data-signal of data channel.

According to present embodiment, method 1500 can also comprise the Resource Block with the signal after scrambling is sent to subscriber equipment from sending point, or the step sending from subscriber equipment to sending point.Can carry out this step by the sending and receiving unit 1000 of sending point device 1004 and the sending and receiving unit of UE800 801.

According to present embodiment, by the special-purpose random seed in sending point, with the random seed of the special-purpose random seed of UE or the group ID generation that distributes based on sending point between switch, when operating, MU can carry out blind Detecting, and can maintain the orthogonality between UE, on the other hand, when non-MU operation, the problem that the contradiction in the time of also can solving JT and non-CoMP operation requires.

(the 7th execution mode)

Described in the 4th above execution mode, by use group ID, generate random seed, the random seed in the JT operation shown in Fig. 4 and non-CoMP operation requires also can be met.But, with situation (in the case, D is known to UE for the UE special I) difference that generates DMRS seed with UE special I D, with group ID generate the DMRS kind period of the day from 11 p.m. to 1 a.m need to be to UE side group of notifications ID.Present embodiment focuses on how to UE group of notifications ID.

When use group ID generates DMRS random seed, need to determine following two problems.

1), in order to tackle the different scenes (CoMP, non-CoMP, MU scene) that illustrate in background technology part, need how many group ID; And

2) how UE notice will be used to which group ID, that is, be to use high-level signaling or use physical layer signaling.

For problem 1), solution because of different scenes different.Particularly, if under CoMP or non-CoMP scene use group ID, organize on a large scale ID and help avoid the ICI being caused by DMRS.On the other hand, if in MU operation use group ID, group ID among a small circle contributes to carry out MU blind Detecting.

For problem 2), solution is also because the scene of use group ID is different.Particularly, if UE is positioned at the border of sending point (community) and switching fast between CoMP and non-CoMP state, needs fast setting group ID (high-level signaling cannot be followed the tracks of this switching), thereby need physical layer signaling.When being positioned at the center of sending point (community) and switching fast, UE can there is same situation between MU and non-MU state.But if UE is from sending point, the center of (community) moves to edge and need to reset DMRS random seed, uses high-level signaling can obtain required effect.

As can be seen here, different according to the concrete condition of use group ID, no matter be to organize on a large scale ID or group ID among a small circle, high-level signaling or physical layer signaling, can both meet the demand of some scene.If use all the time group ID and physical layer signaling on a large scale, mean a large amount of wastes.Therefore, key is the group ID of How to choose OK range and the method that is set UE.

In present embodiment, propose to solve this problem by combination high-level signaling and physical layer signaling.What propose comprises following two steps for UE being set to the method for (transmission) group ID.

1) by high-level signaling, UE is set to (transmission) group ID table.Wherein, this table comprises the operable available set ID of UE.All scopes of group ID can be larger, but the subset in all groups ID space can set and send UE to network side.

2) after UE is set to (transmission) group ID table, use physical layer signaling will use which the group ID in this group ID table to UE notice.

The basic thought of present embodiment shown in Figure 16.Figure 16 means the schematic diagram of setting according to the group ID of present embodiment.Three macrocells (grand sending point) 1～3 shown in Figure 16.In macrocell 1, carry out MU operation, and to have 1 and 4 UE of eNB (base station) be UE1～4.In macrocell 2, carry out JT (CoMP) operation, and having eNB2,2 LPN (Low Power Node, low power nodes) is LPN1～2 and UE5, and wherein eNB2, LPN1 and LPN2 have different sending point (community) ID respectively.In macrocell 3, carry out non-CoMP operation, and to have eNB3,4 LPN be that LPN1～4 and 3 UE are UE6～8, wherein eNB3, LPN1, LPN2, LPN3 and LPN4 all have identical sending point (community) ID.Here, eNB or LPN also can be called sending point (device).

For these three macrocells of carrying out three kinds of different types of operations, network side distributes (transmission) different group ID table by high-level signaling to the UE in different macrocells respectively.As shown in figure 16, each group ID table comprises two parts, i.e. " index " and " information ", represents respectively the group ID that index and the UE corresponding with index can use.

Particularly, as shown in figure 16, UE1～4 in macrocell 1 are set the group ID table in this figure left side, comprise two index 0,1 and the group ID corresponding with them and organize ID1 and group ID2 in this table.As described above with reference to Figure 6,2 random seeds of UE1～4 that MU operation is lower can meet the requirement of MU blind Detecting, so 2 available group ID can obtain required effect in the situation that of macrocell 1.

The in the situation that of macrocell 2, eNB2, LPN1, LPN2 have different sending point (community) ID respectively, and the different DMRS random seeds that therefore the different sending point ID based on them generate cannot meet the random seed requirement of the JT operation illustrating in background technology part.Therefore, the ID of use group here generates DMRS random seed to meet this requirement.Particularly, UE5 is set the group ID table of these figure central authorities, comprises three index 0,1,2 and the group ID corresponding with them and organize ID3, group ID4 and group ID5 in this table.It is noted that owing to there are three sending points in macrocell 2, i.e. eNB2 and LPN1～2, so provide three available group ID.

The in the situation that of macrocell 3, eNB3, LPN1, LPN2, LPN3 and LPN4 all have identical sending point (community) ID, and the identical DMRS random seed that therefore the identical sending point ID based on them generates cannot meet the random seed requirement of the non-CoMP operation illustrating in background technology part.Therefore, the ID of use group here generates DMRS random seed to meet this requirement.Particularly, UE6～8 are set the group ID table on this figure right side, comprise five index 0～4 and group ID6～10 corresponding with them in this table.Here, owing to there are five sending points in macrocell 3, i.e. eNB3 and LPN1～4, so provide five available group ID.

As mentioned above, the group ID table that UE is set can comprise the group ID of the maximum quantity that UE likely uses, and these groups ID is the subset of all organizing ID space.As shown in figure 16, all organize ID space and can comprise a large amount of groups of ID, for example, organize ID1 to organizing ID N.But, the limited amount of the group ID in the group ID table that UE is set.Like this, for each UE, only there is index among a small circle to meet the demands.

When UE having been set to group ID table from network side by high-level signaling, sending point device (eNB) is used physical layer signaling to use which the group ID in this group ID table to UE notice, or notifies " index " that be used in this group ID table to UE.Particularly, for example, the in the situation that of macrocell 1, by the notice of eNB1, the DMRS of UE1 and UE3 carries out scrambling by having carried out initialized scramble sequence by random seed, this random seed is organized ID1 based on index 0 and is generated, the DMRS of UE2 and UE4 carries out scrambling by having carried out initialized scramble sequence by random seed, and this random seed is organized ID2 based on index 1 and generated.

The in the situation that of macrocell 2, although comprise three available group ID in the group ID that UE5 is set table, organize ID3～5, in fact these three available group ID may not can be all used.For example, in the situation that carry out JT operation by different sending points, as described above with reference to Figure 4, one of available group ID in the group ID table based on setting generates identical random seed.Therefore, for example, as shown in figure 16, by physical layer signaling, from eNB2 and LPN2, UE5 is notified, based on index 0, organize the identical random seed that ID3 generates eNB2 and LPN2.

Macrocell 3 is then described.As described in reference to Fig. 4, the in the situation that of carrying out non-CoMP operation in adjacent sending point, for fear of the ICI being caused by DMRS, require the different DMRS random seeds based on ID does not generate on the same group.Therefore, as shown in figure 16, in respectively to the operation of the adjacent sending point eNB3 of two phase mutual interference of UE7 and UE6 transmitted signal and LPN2, from eNB3, by physical layer signaling, UE7 is notified, the random seed of eNB3 is organized ID8 based on index 2 and is generated, from LPN2, by physical layer signaling, UE6 is notified, the random seed of LPN2 is organized ID6 based on index 0 and is generated.Similarly, in respectively to the operation of the adjacent sending point eNB3 of two phase mutual interference of UE7 and UE8 transmitted signal and LPN4, also from LPN4, by physical layer signaling, UE8 is notified, the random seed of LPN4 is organized ID10 based on index 4 and is generated.

It is noted that and in a macrocell, likely have different types of operation simultaneously.For example, as shown in the macrocell 3 of Figure 16, two sending point LPN2 and LPN1 are UE6 transmitted signal to identical UE, and this is the situation of JT operation.Therefore, the DMRS of LPN1 should be identical with the DMRS of LPN2, thereby UE6 is notified by physical layer signaling from LPN1, and the random seed of LPN1 is organized ID6 (identical with LPN2) based on index 0 and generated.

In Figure 16, each macrocell has been assigned with the different subsets of group ID, and this is a kind of plain mode to sending point (community) assign group ID.But the invention is not restricted to this, the group ID that distributes to different sending points (community) also can repeat.

According to present embodiment, sending point device (for example 700) can also comprise notification unit (not shown), this notification unit is notified UE by physical layer signaling, which by high-level signaling, to the group ID in the group ID table of UE setting (transmission), will be used, wherein organizing ID table is the subset of all organizing ID space, comprises the group ID that UE can use.Correspondingly, the group ID of the random seed generation unit of sending point device (for example 701) based on notified generates random seed.

According to present embodiment, UE (for example 800) can also utilize its sending and receiving unit (for example 801) to receive physical layer signaling from sending point device, this physical layer signaling is notified UE, which by high-level signaling, to the group ID in the group ID table of UE setting (transmission), will be used, wherein organizing ID table is the subset of all organizing ID space, comprises the group ID that UE can use.

By using the group ID illustrating in present embodiment to show, system has the flexibility of reply different situations.In some cases, for example, when UE need to switch fast between different DMRS random seeds, can use physical layer signaling; In some other situation, for example, when UE is when from sending point, the center of (community) moves to edge, system can be that UE resets group ID and shows by high-level signaling.Owing to can group ID table being reset, so each group ID table can comprise the group ID of limited quantity, this means that while using physical layer signaling to which the group ID in UE group of notifications ID table will be used, signaling consumption is not too large.

(the 8th execution mode)

By combining high-level signaling and physical layer signaling with to UE setting group ID, can provide flexibility to meet the different requirements about DMRS random seed, however, how to determine that the problem in the blind Detecting space of UE is not resolved yet.A kind of simple method is that UE regards the group ID table of setting by high-level signaling as blind Detecting space (UE supposes that all groups of ID in this table likely produce and disturb it).But the quantity of the group ID comprising in group ID table likely changes, for example, as shown in figure 16, the group ID table that macrocell 1～3 is set comprises respectively 2,3 and 5 available group ID.And when design blind tester, UE need to tackle maximum blind Detecting space, and the random seed of the maximum quantity of interference likely occurs.Therefore, regard whole group of ID table as the method in blind Detecting space will reduce performance or the reliability of blind Detecting.As in background technology part with reference to as described in Fig. 6, in version 10, blind Detecting space is limited to only 2 random seeds.

Therefore, the solution of present embodiment is that the physical layer signaling described in the 7th execution mode comprises following two parts.

Part I: will be for this UE to which the group ID in UE group of notifications ID table;

Part II: which the group ID during UE group of notifications ID is shown is by other UE for this UE generation is disturbed.

In the case, the blind Detecting space of UE consists of the group ID notifying by part I and the group ID that notifies by part II.Therefore, in the blind Detecting space of the part I by physical layer signaling and part II notice, carry out the blind Detecting of UE side.

By using physical layer signaling to UE notice blind Detecting space, can limit the blind Detecting space of UE, and be not whole group of ID table.

(the 9th execution mode)

In the 8th execution mode, from by high-level signaling, UE being set the group ID table of (transmission), the group ID for this UE notifying by part I and the group ID for other UE notifying by part II have been selected.In other words, part I is identical with the candidate set ID of part II, is all the group ID in the group ID table setting.

But, in fact, for part II, other UE are arranged in the UE (situation of MU) of identical sending point (community) with this UE, or be arranged in the UE of different sending points (community) from this UE, that is, according to circumstances different, the candidate set ID of part I and part II may be identical, also may be different.For example, in the situation that a plurality of UE are MU near being positioned at the center of sending point (community), these UE can switch fast between MU and SU state, thereby part I is identical with the candidate set ID of part II, are all to the group ID in the group ID table of UE setting (transmission) by high-level signaling.On the other hand, when UE moves to the edge of sending point (community), other UE are probably arranged in adjacent sending point (community), thereby the candidate set ID of part II is likely the group ID in the group ID table that adjacent sending point (community) set.In the case, part I is different with the candidate set ID of part II.

Based on above-mentioned analysis, in present embodiment, propose, by RRC (Radio Resource Control, Radio Resource is controlled) contour level signaling, UE is set to (transmission) structuring group ID table.Particularly, the structuring group ID table of UE being set by high-level signaling can comprise two set, for example, gather 1 and set 2.Wherein, for the group ID of the DMRS random seed of UE, from gathering 1, select, the part I of above-mentioned physical layer signaling is included in set 1; And select with set 2 from gathering 1 for this UE being produced to the group ID of the DMRS random seed of other UE that disturb, the part II of physical layer signaling is included in set 1 and gathers in 2.

Figure 17 illustrates an example and the structuring group ID of UE setting is shown by high-level signaling according to present embodiment.A specific example shown in Figure 17.In this structuring group ID table, for example, gather 1 and comprise respectively two group ID with set 2.Particularly, gathering the 1 group ID that comprises two index 0,1 and correspondence is id0 and id1, and gathering the 2 group ID that comprise two index 2,3 and correspondence is id2 and id3.As an example, gather 1 for local sending point (community), gather 2 for generation of the sending point (community) of disturbing.That is, the id0 and the id1 that gather in 1 are two group ID that the UE in local sending point can use, and the id2 and the id3 that gather in 2 produce two group ID that the UE in the sending point of disturbing can use.

Therefore, the in the situation that of MU (for example, be positioned near the center of local sending point), by the part I of physical layer signaling and the group ID of part II notice, all from the set 1 of structuring group ID table, select, because the UE that UE self and generation are disturbed (other UE that disturb occurring with UE) is arranged in local sending point.On the other hand, when UE moves to the edge of local sending point, the group ID notifying by part I still selects from gathering 1, but the group ID notifying by part II selects from gathering 2, because produce the UE disturbing, be probably arranged in the sending point (for example sending point adjacent with the local sending point at UE self place) that produces interference.

As mentioned above, from the set 1 of structuring group ID table that UE is set, select by the group ID of the part I notice of physical layer signaling all the time, and from gathering 1 or gather the group ID that in the one 2, selection is notified by part II.Therefore, in this case, in physical layer signaling, part I and part II only need respectively 1 bit.Other expenses are indications for the group ID that selects to notify by part II, gather 1 and gather 1 bit signalling of the switching between 2, generally when UE moves, produce this signaling, therefore can frequently not send.

When not using this structuring group ID table, in the situation that there is altogether 4 candidate set ID, part I and part II need respectively 2 bits.Therefore, use the structuring group ID table of UE being set to (transmission) by high-level signaling, can reduce by 50% physical layer signaling expense.

Although each set of the structuring group ID by high-level signaling, UE being set in present embodiment table comprises two available group ID, but the invention is not restricted to this, and method of the present invention can expand to carries out multiplexing situation to the signal of multilayer, that is each set of the structuring group ID table of, by high-level signaling, UE being set can comprise a plurality of available group ID of multilayer signal.

In next execution mode, the example with detailed is further illustrated to how to design the corresponding physical layer signaling with structuring group ID table.

(the tenth execution mode)

In the above-described 3rd embodiment, show and how to re-use the table shown in the Figure 11 defining in TS36.212, to UE notice DMRS port and DMRS random seed.In present embodiment, can redesign similar method, to process the above-mentioned structuring group ID table of (transmission) of UE being set by high-level signaling.Particularly, physical layer signaling can comprise following three parts.

Part I: to UE notice from gathering which group ID of selecting 1 by the DMRS for this UE;

Part II: to UE notice from gathering 1 or gather which group ID of selecting 2 by for this UE being produced to other UE that disturb; And

Part III: UE notice, as disturbing the set 1 in random seed space (interference group ID space) and gathering the switching between 2, is selected to the group ID being notified by part II from this interference random seed space.

Figure 18 represents according to the table of the part I for physical layer signaling of present embodiment.For part I, the table shown in Figure 11 can redesign as the table shown in Figure 18.For brevity, the situation with 1 code word of 1 layer after multiplexing is only shown in Figure 18, but the invention is not restricted to this.As shown in figure 18, for 0～4, two row of identical value " message, version 10 " and " message, version 11 ", represent respectively the corresponding combination of DMRS port in version 10 and version 11 and random seed.Particularly, in version 11, be worth identical in corresponding DMRS port and version 10 with these, for the group ID (being index) of DMRS random seed, can be represented by the SCID of version 10.Therefore, without the new bit for to UE notice DMRS random seed.Here, " index " in the structuring group ID table of the expression of " index " in the table of Figure 18 Figure 17.

For part II, need to newly append 1 bit, with UE is notified in structuring group ID shown in Figure 17 table with for disturbing the accurate index that the group ID of UE (other UE of interference occurring with UE) is corresponding.

Figure 19 represents according to the table of the part III for physical layer signaling of present embodiment.For part III, the table shown in Figure 11 can be redesigned for the table shown in Figure 19.Particularly, the value of the former reservation in version 10 " 7 " now again as the switching signal that represents the switching in interference random seed space (interference group ID space), for example, represents the set 1 in the structuring group ID table shown in Figure 17 and gathers the switching between 1.

Easily understand, part I and part III all for example, notify UE by existing L1 signaling (, existing DCI form 2C), therefore, when UE is sent to physical layer signaling, only can be to the one in UE notification section I and part III by existing L1 signaling.Ensuing problem is, when the sending point devices such as eNB send retention (" 7 ") to UE, UE to be used to which DMRS random seed and which DMRS port.In order to address this problem, can be set as follows rule in the case.

1) now use the bit newly append in UE indication set 1 (i.e. part II not, but part I), for the group ID of the DMRS random seed of UE;

2) determine that UE is used port 7 (OCC[1,1]) or port 8 (OCC[1 ,-1]); And

3) now the blind Detecting space of UE set 1 in.

Figure 20 A and 20B mean UE from the center of sending point, move to Shi， sending point, edge as the 9th execution mode and the tenth execution mode defined, use the schematic diagram of the complete example of the situation that high-level signaling and physical layer signaling set UE.

，You Liangge community (sending point) 1～2 (eNB1 and eNB2) as shown in FIG. 20 A.In sending point 1, while supposing moment T1, UE1 and UE2 are in MU operation, and therefore, now UE2 is the interference UE of UE1.Then, constantly during T2 UE1 from sending point, 1 center moves to edge.Subsequently, during moment T3, UE1 arrives the edge of sending point 1, and now the UE3 in sending point 2 becomes the UE that produces interference with UE1.

In this embodiment, by RRC contour level signaling, UE1 being set to the structuring group ID shown in this figure left side shows.The structuring group ID table of UE1 comprises " ”He“ interfered cell, Serving cell " two set, and the title of these two set has suitably showed their content, and they equal in fact above-mentioned set 1 and set 2.Particularly, set " Serving cell " comprises two available group ID of UE1, and this set is the subset of all organizing ID space, is assigned to the UE in sending point 1, works as the Serving cell (sending point) of UE1 in this sending point 1.Set " interfered cell " comprises two the available group ID of for example, UE in the interfered cell (sending point) (being sending point 2 in this example) to UE1, and this set is also the subset of all organizing ID space.Easily find out in this example, the id0 in " Serving cell " and id1 are the group ID that UE1 and UE2 can use, and id2 and id3 are the group ID that UE3 can use.

Similarly, also by RRC contour level signaling, UE3 being set to the structuring group ID shown in this figure right side shows.Different from UE1, for UE3, its Serving cell (sending point) is sending point 2, its interfered cell (sending point) is sending point 1, thereby " Serving cell " comprise the group ID that id2 and id3 can use as UE3, " interfered cell " comprises the group ID that id0 and id1 can use as for example, UE in the interfered cell of UE3 (being sending point 1 in this example).

As mentioned above, Figure 20 A illustrates in this example and by high-level signaling, the structuring group ID of UE setting (transmission) is shown.Referring to Figure 20 B describe in detail UE1 from the center of sending point 1 move to edge during, the notice of UE1 being carried out by physical layer signaling (L1 signaling).

On the top of Figure 20 B, L1 signaling when moment T1 is shown, UE1 being sent.Particularly, by the table shown in above-mentioned Figure 11 is redesigned, by value " 0 " notice, UE1 is used port 7 and id0.In addition, use 1 bit newly appending UE1 notice to be disturbed to the group ID of UE use, for example " 1 " represents id1.Its reason is, UE1 and UE2 are in MU operation during T1 constantly, and UE2 is considered to the interference UE to UE1.In the case, disturbing random seed space is only the scope of " Serving cell " in the structuring group ID table that UE1 is set, and therefore, the blind Detecting definition space of UE1 is for being arranged in " Serving cell ".

At the middle part of Figure 20 B, L1 signaling when moment T2 is shown, UE1 being sent.Particularly, by redesigning, utilize the value " 7 " retaining in the table shown in Figure 11, UE1 notice disturbed to the switching in random seed space, that is, disturb Cong“ Serving cell, random seed space " change to " interfered cell ".Then, different during from T1, during T2, use 1 bit newly appending to notify the group ID for the DMRS random seed of UE1 to UE1, for example " 0 " represents id0.According to above-mentioned rule, in the case, UE1 is fixed to port 7 or port 8, does not therefore need for UE1 notice being used to the appended bits of which DMRS port.In addition, during due to T2, UE1 moves, so without UE1 being notified to its interference UE, so do not need other new bits.In the case, according to above-mentioned rule, blind Detecting space remains unchanged, and is arranged in " Serving cell " of the structuring group ID table of UE1.

In the bottom of Figure 20 B, L1 signaling when moment T3 is shown, UE1 being sent.Therefore now UE1 has arrived the edge of sending point 1, and L1 signaling when L1 signaling now and T1 is similar.Particularly, by the table shown in above-mentioned Figure 11 is redesigned, UE1 is still to be used port 7 and id0 for utilization value " 0 " notice.In addition the group ID that, also uses the 1 bit notice UE1 newly appending in L1 signaling to disturb UE to use.Owing to now disturbing UE, be the UE3 in sending point 2, and be not the UE1 in sending point 1, and to UE1, notified the switching of disturbing random seed space during T2, " interfered cell " during so the structuring group ID that interference random seed space is now UE1 shows, and the group ID that now disturbs UE to use selects from " interfered cell ", for example, now " 1 " represents id3.In the case, the blind Detecting definition space of UE1 is the scope (being id0 and id3) that is positioned at the DMRS random seed of UE1 and disturbs random seed (disturbing the random seed of UE).

By making full use of the redundancy in existing L1 signaling, to the blind Detecting space in the UE indication situation of MU or presence of intercell interference (ICI) situation of UE side, thereby the blind Detecting space of UE limited, reduced the expense of signaling.

(the 11 execution mode)

A problem of the tenth execution mode is that physical layer signaling is likely because PDCCH detects unsuccessfully and loses.Figure 21 means according to the schematic diagram of situation present embodiment, that physical layer signaling is lost because of PDCCH failure.As shown in figure 21, if eNB sends a retention (part III) to notify the switching between UE set 1 and set 2 to UE as mentioned above, but UE does not receive this retention, between eNB and UE, will there will be asynchronous.That is, eNB will disturb random seed space (interference group ID space) for example from gathering 1, to switch to set 2, but UE still keeps disturbing random seed space invariance.Solution is that combination Ack/Nck (Acknowledge/Non-acknowledge, positive response/negative response) process detects unsuccessfully to overcome this PDCCH.

Following as an example, simply introduce DL (Downlink, downgoing line) Ack/Nck process.In LTE or senior LTE, in order to prevent physical layer message loss, between UE and eNB, there is an Ack/Nck mechanism.Particularly, the in the situation that of DL, in subframe n (SF n), if UE receipt message it is successfully decoded, UE sends Ack signal to eNB in subframe n+4 (SF n+4); If UE receipt message and making a mistake when it is decoded, UE sends Nck signal to eNB in SF n+4.Whether Ack from UE or the Nck signal of eNB based in SF n+4, be identified in the message sending in SF n and by UE, successfully received and decode.If eNB does not receive any signal in SF n+4, the message sending in eNB hypothesis SF n is lost in transmission.

By combining with this Ack/Nck process, can avoid that eNB and UE's is asynchronous.Figure 22 mean according to present embodiment, by and Ack/Nck mechanism combine to avoid the schematic diagram of the nonsynchronous situation between eNB and UE.As shown in figure 22, if UE receives retention " 7 " or switching command in SF n, UE and eNB do not change immediately or switch and disturb random seed space.On the contrary, UE and eNB will be used the interference random seed space of not switching before SF n+4, and UE sends Ack/Nck signal to eNB in SF n+4.In SF n+5, if eNB receives the Ack/Nck signal sending from UE, eNB and UE both sides are synchronously switched interference random seed space; If eNB does not receive any signal from UE, eNB and UE all do not switch interference random seed space.Although this process sends switching command at SF n to UE for eNB, UE in fact (may be because channel conditions is poor) does not receive the exception of any signal.

For the switching of disturbing random seed space (or blind Detecting space), by with the combination of Ack/Nck mechanism, can avoid asynchronous between eNB and UE.

In the 7th to the tenth execution mode, use physical layer signaling notify the group ID of this UE use and with this UE, the group ID of other UE uses of interference occur UE, but the invention is not restricted to this.It should be noted that, also can to UE, set group ID table or the structuring group ID table of (transmission) by the high-level signaling based on by above, use the index (group ID) of the high-level signaling of the UE special uses such as RRC signaling to UE notice (this UE's) DMRS random seed and (disturbing UE's) interference DMRS random seed.In the case, because RRC has the signaling protection mechanism of himself, so need not worry the signaling loss in transmission.

According to present embodiment, the notification unit (not shown) of sending point device (for example 700) can be notified UE by physical layer signaling or the special-purpose high-level signaling of UE, which by high-level signaling, to the group ID in the group ID table of UE setting (transmission), will be used, wherein organizing ID table is the subset of all organizing ID space, comprises the group ID that UE can use.

According to present embodiment, UE (for example 800) can also utilize its sending and receiving unit (for example 801) to receive physical layer signaling or the special-purpose high-level signaling of UE from sending point device, the special-purpose high-level signaling of this physical layer signaling or UE is notified UE, which by high-level signaling, to the group ID in the group ID table of UE setting (transmission), will be used, wherein organizing ID table is the subset of all organizing ID space, comprises the group ID that UE can use.

(the 12 execution mode)

In the present invention, in DMRS and blind Detecting, can use any in three kinds of ID (being above-mentioned community ID, UE special I D and group ID).Although above-mentioned the 7th emphasis to the 11 execution mode is all the table to UE setting group ID, the invention is not restricted to this.The group ID table illustrating in (shown in Figure 16) the 7th execution mode or (shown in Figure 17) the 9th execution mode can expand to more generally situation, can be " x " ID table.This " x " ID can be a kind of ID, can be also two or more ID.The the 7th to the 11 execution mode is that " x " ID is specially the example while organizing ID.

Figure 23 illustrates structuring " x " the ID table that an example is set UE by high-level signaling according to present embodiment.In the example of Figure 23, " x " ID is two ZhongID，Ji community ID and UE special I D.Particularly, the structure of the structure of the table of " x " ID in Figure 23 and the table of the group ID in Figure 17 is similar.Their difference is, in Figure 23, gathers 1 and comprises Serving cell ID1 and UE special I D1 as the available ID of UE, gathers 2 and comprises Serving cell ID2 and UE special I D2 as the available ID of the interference UE to this UE.That is, in the case, all available with interference UE， community ID and UE special I D for UE.

In the 3rd execution mode about MU operation, in order to carry out blind Detecting, UE switches back the situation of community ID.But, if use structuring " x " the ID table of Figure 23, UE side also can be used UE special I D to carry out blind Detecting, because the blind Detecting space of UE is arranged in structuring " x " ID table, can be by combination physical layer Signalling Designing, be further restricted to ID more among a small circle.

Here, should show similar with the structuring group ID in the 9th execution mode by " x " ID table, by gathering 1, carry out structuring with set 2, therefore in the case, corresponding physical layer signaling design in the tenth and the 11 execution mode also can utilize, but for fear of redundancy, detailed herein.

It is noted that three kinds of ID that " x " ID is not limited to illustrate in the present invention.Those skilled in the art can easily be expanded to the ID of other kinds arbitrarily.

(the 13 execution mode)

Figure 24 means according to the figure of the flow process of the method for the scrambled signals of present embodiment.

As shown in figure 24, according to the method 2400 of thirteenth embodiment of the invention, for signal is carried out to scrambling, this signal is assigned to the predetermined Radio Resource of at least one deck Resource Block with identical time resource and frequency resource.In step S2401, by high-level signaling, UE is sent to ID and show, this ID table is the subset in all ID space, comprises the ID that this UE can use.In step S2402, by physical layer signaling or the special-purpose high-level signaling of UE, to this UE, notify the ID that will use in this ID table.In step S2403, the ID based on notified generates random seed.In step S2404, by this random seed, scramble sequence is carried out to initialization.In step S2404, use has been carried out initialized scramble sequence signal has been carried out to scrambling.

According to present embodiment, by random seed generation unit 701, carry out above-mentioned steps S2403, by initialization unit 702, carry out above-mentioned steps S2404, by scrambling unit 703, carry out above-mentioned steps S2405.In addition, by the notification unit (not shown) of sending point device 700, carry out above-mentioned steps S2402.

According to present embodiment, physical layer signaling can comprise following part.First, will be for this UE to which ID in UE notice ID table; And second portion, which ID during UE notice ID is shown is by other UE for this UE generation interference.

According to present embodiment, ID table can be structured to and comprise the first set and the second set, and wherein the ID for this UE selects from the first set, for the ID that other UE of disturbing occurs with this UE, from the first set or the second set, selects.

According to present embodiment, first can be used the signaling of being set by 1 code word to notify UE, and wherein 4 values in 1 code word represent respectively following 4 kinds of settings of 1 layer signal, that is: the first port and an ID; The first port and the 2nd ID; The second port and an ID; And second port and the 2nd ID.Second portion can be used new bit to notify UE.

According to present embodiment, physical layer signaling can comprise following part.First, will be for this UE to which ID in the first set of UE notice ID table; And third part, UE notice, as first set in interference ID space and the switching between the second set, is disturbed to the ID that selects to be used for other UE ID space from this.

According to present embodiment, can use new bit to notify first to UE, can use the signaling of being set by 1 code word to notify third part to UE, the retention in this 1 code word represents the switching between the first set and the second set.Wherein, can make fixing the first port or the second port of using of UE, the blind Detecting space of UE can not changed.

According to present embodiment, when UE receives the third part sending from sending point device in subframe n, UE can, in subframe n+4, send positive response (Acknowledge) or negative response (Non-acknowledge) signal to sending point device.If sending point device receives positive response or the negative response signal sending from UE, sending point device and UE both sides carry out switching in subframe n+5; Otherwise, if both having received positive response signal from UE, sending point device do not receive negative response signal yet, sending point device and UE all do not carry out switching.

According to present embodiment, the ID in ID table is one or more in ZuID, community ID and UE special I D.

According to present embodiment, can generate the random seed based on group ID according to equation (5).

According to present embodiment, signal can be that the control signal of reference signal, control channel is, the one in the data-signal of data channel.

According to present embodiment, group ID and the blind Detecting space of UE notice being used by combination physical layer signaling and high-level signaling, can carry out the blind Detecting of UE, and reduce signaling consumption.

In above-mentioned detailed description, by user's block diagram, flow chart and/or example, the various execution modes of device and/or process are recorded.Those skilled in the art are to be understood that, in the situation that this block diagram, flow chart and/or example comprise one or more functions and/or operation, the various functions in this block diagram, flow chart or example and/or operation can by various hardware, software, firmware or its substantial combination in any be come separately and/or realization jointly.In one embodiment, some parts of theme described herein can be passed through application-specific integrated circuit (ASIC) (Application Specific Integrated Circuit, ASIC), field programmable gate array (Field Programmable Gate Array, FPGA), digital signal processor (DSP) or other integrated forms realize.Yet, those skilled in the art will recognize that, some aspects of execution mode disclosed herein can realize in integrated circuit on the whole or partly equally, (be for example embodied as one or more computer programs of moving on one or more computer, be embodied as one or more programs of moving in one or more computer system), (be for example embodied as one or more programs of moving on one or more processors, be embodied as one or more programs of moving on one or more microprocessors), be embodied as firmware, or be embodied as in fact the combination in any of aforesaid way, and those skilled in the art are according to the present invention, to possess design circuit and/or write software and/or the ability of firmware code.In addition, those skilled in the art will recognize that, the mechanism of theme of the present invention can be distributed as the program product of various ways, and regardless of the actual particular type that is used for carrying out the signal bearing medium of distributing, the illustrative embodiments of theme of the present invention is all applicable.The example of signal bearing medium includes but not limited to: recordable-type media, as floppy disk, hard disk drive, compact disk (CD), digital universal disc (DVD), digital magnetic tape, computer storage etc.; And transmission type media, for example, as numeral and/or analog communication medium (, optical fiber cable, waveguide, wire communication line, wireless communication line etc.).

As for any use about majority and/or singular references herein, those skilled in the art can be singulative from most formal transformations, and/or are converted to most forms from singulative, to be applicable to specific environment and/or application.For clarity sake, interchangeable in the various singulatives of this explicit state/most forms.

Although disclose many aspects and execution mode at this, it will be appreciated by those skilled in the art that other aspects and execution mode.Many aspects disclosed herein and execution mode are for illustrative object, rather than restrictive, and true scope of the present invention and spirit are characterized by claims.

Claims (39)

1. for signal being carried out to the method for scrambling, this signal is assigned to the predetermined Radio Resource of at least one deck Resource Block with identical time resource and frequency resource, and the method comprises the steps:

Based on following equation, generate the step of random seed, this equation is,

By described random seed, scramble sequence is carried out to initialized step; And

Described in use, carried out initialized scramble sequence described signal carried out to scrambling step,

In described equation, Max=Maxim_value (cell_id), Max represents the maximum of sending point ID, c _initrepresent described random seed, n _srepresent timeslot number, n_RNTI represents user equipment specific ID.

2. the method for claim 1,

Described signal is the one in the control signal of reference signal, control channel and the data-signal of data channel.

3. sending point device, sends to subscriber equipment by the signal that is assigned to the predetermined Radio Resource of at least one deck Resource Block with identical time resource and frequency resource, and this sending point device comprises:

Random seed generation unit, based on equation

generate random seed;

Initialization unit, carries out initialization by described random seed to scramble sequence;

Scrambling unit, has carried out initialized scramble sequence described in use described signal has been carried out to scrambling; And

Sending and receiving unit, sends to described subscriber equipment by the described Resource Block that has carried out the signal of scrambling described in having,

In described equation, Max=Maxim_value (cell_id), Max represents the maximum of sending point ID, c _initrepresent described random seed, n _srepresent timeslot number, n_RNTI represents user equipment specific ID.

4. subscriber equipment, receives the signal of the predetermined Radio Resource that is assigned at least one deck Resource Block with identical time resource and frequency resource from sending point, this subscriber equipment comprises:

Sending and receiving unit, receives described Resource Block from described sending point; And

Demodulating unit detects described Resource Block and obtains described signal in time domain and/or frequency domain,

Described signal is used and has carried out initialized scramble sequence by scrambling by random seed, and described random seed generates based on following equation:

In described equation, Max=Maxim_value (cell_id), Max represents the maximum of sending point ID, c _initrepresent described random seed, n _srepresent timeslot number, n_RNTI represents user equipment specific ID.

5. for signal being carried out to the method for scrambling, this signal is assigned to the predetermined Radio Resource of at least one deck Resource Block with identical time resource and frequency resource, and the method comprises the steps:

From the second random seed and the first random seed based on sending point ID generation, select the step of random seed;

Random seed by described selection carries out initialized step to scramble sequence; And

Described in use, carried out initialized scramble sequence and described signal has been carried out to the step of scrambling.

6. method as claimed in claim 5,

Based on user equipment specific ID or the group ID that distributed by sending point, generate described the second random seed.

7. method as claimed in claim 6,

According to equation

generate described the second random seed, in described equation, c _initrepresent described the second random seed, n _srepresent timeslot number, group_id represents to organize ID.

8. method as claimed in claim 5,

Also comprise: the signaling by increasing by 1 bit, as switch flag, is notified the step of the selection of described the first random seed and described the second random seed to receiving terminal.

9. method as claimed in claim 5,

Also comprise: by using the signaling of being set by 1 code word, receiving terminal is notified to the step of the selection of described the first random seed and described the second random seed,

7 values in described 1 code word are expressed as follows respectively 7 kinds of situations: use 1 layer signal of the first ports-settings, and the second random seed; Use 1 layer signal of the first ports-settings, and the first random seed; Use 1 layer signal of the second ports-settings, and the second random seed; Use 1 layer signal of the second ports-settings, and the first random seed; Use 2 layer signals of the first and second ports-settings, and the second random seed; Use 3 layer signals of first, second and third ports-settings, and the second random seed; And 4 layer signals that use the first to the 3rd port and the 4th ports-settings, and the second random seed.

10. method as claimed in claim 5,

Also comprise: by using the signaling of being set by 2 code words, receiving terminal is notified to the step of the selection of described the first random seed and described the second random seed,

8 values in described 2 code words are expressed as follows respectively 8 kinds of situations: use 2 layer signals of the first and second ports-settings, and the second random seed; Use 2 layer signals of the first and second ports-settings, and the first random seed; Use 3 layer signals of first, second and third ports-settings, and the second random seed; Use 4 layer signals of first to fourth ports-settings, and the second random seed; 5 layer signals that use first to fourth port and five-port to set, and the second random seed; Use the first 6 layer signals to five-port and the 6th ports-settings, and the second random seed; Use 7 layer signals of the first to the 6th port and the 7th ports-settings, and the second random seed; And 8 layer signals that use the first to the 7th port and the 8th ports-settings, and the second random seed.

11. methods as claimed in claim 5,

According to equation

generate described the first random seed, in described equation, c _initrepresent described the first random seed, n _srepresent timeslot number, cell_id represents sending point ID, and SCID is binary value.

12. methods as claimed in claim 11,

Also comprise: by using the signaling of being set by 1 code word, receiving terminal is notified to the step of the selection of described the first random seed and described the second random seed,

8 values in described 1 code word are expressed as follows respectively 8 kinds of situations: use 1 layer signal of the first ports-settings, and the first random seed of SCID=0; Use 1 layer signal of the first ports-settings, and the first random seed of SCID=1; Use 1 layer signal of the second ports-settings, and the first random seed of SCID=0; Use 1 layer signal of the second ports-settings, and the first random seed of SCID=1; Use 2 layer signals of the first and second ports-settings, and the second random seed; Use 3 layer signals of first, second and third ports-settings, and the second random seed; Use 4 layer signals of the first to the 3rd port and the 4th ports-settings, and the second random seed; And 1 layer signal that uses the first port or the second ports-settings, and the second random seed.

13. methods as claimed in claim 6,

Described the second random seed is different from described the first random seed.

14. methods as claimed in claim 13,

According to equation generate described the second random seed, in described equation, Max=Maxim_value (cell_id), Max represents the maximum of sending point ID, c _initrepresent described the second random seed, n _srepresent timeslot number, n_RNTI represents user equipment specific ID.

15. methods as claimed in claim 5,

Described signal is the one in the control signal of reference signal, control channel and the data-signal of data channel.

16. sending point devices, send to subscriber equipment by the signal that is assigned to the predetermined Radio Resource of at least one deck Resource Block with identical time resource and frequency resource, and this sending point device comprises:

Selected cell, from the second random seed and the first random seed based on sending point ID generation, selects random seed;

Initialization unit, the random seed by described selection carries out initialization to scramble sequence;

Scrambling unit, has carried out initialized scramble sequence described in use described signal has been carried out to scrambling; And

Sending and receiving unit, sends to described subscriber equipment by the described Resource Block that has carried out the signal of scrambling described in having.

17. sending point as claimed in claim 16 devices,

Described the second random seed is generated based on user equipment specific ID or the group ID that distributed by sending point.

18. subscriber equipmenies, receive the signal of the predetermined Radio Resource be assigned at least one deck Resource Block with identical time resource and frequency resource from sending point, this subscriber equipment comprises:

Sending and receiving unit, one deck Resource Block at least described in receiving from described sending point; And

Demodulating unit detects described Resource Block and obtains described signal in time domain and/or frequency domain,

Described signal is used and has carried out initialized scramble sequence by scrambling by random seed, and described random seed is selected from the second random seed and the first random seed based on sending point ID generation.

19. subscriber equipmenies as claimed in claim 18,

Described the second random seed is generated based on user equipment specific ID or the group ID that distributed by sending point.

20. for carrying out the method for scrambling to signal, this signal is assigned to the predetermined Radio Resource of at least one deck Resource Block with identical time resource and frequency resource, and the method comprises the steps:

By high-level signaling, to subscriber equipment, send the step of ID table, described ID table is the subset in all ID space, comprises the ID that described subscriber equipment can be used;

The step to the ID that will use in ID table described in described notification of user equipment by physical layer signaling or user equipment specific high-level signaling;

ID based on described notice generates the step of random seed;

By described random seed, scramble sequence is carried out to initialized step; And

Described in use, carried out initialized scramble sequence and described signal has been carried out to the step of scrambling.

21. methods as claimed in claim 20,

Described physical layer signaling comprises following part:

First, will be for described subscriber equipment to which ID in ID table described in described notification of user equipment; And

Second portion, which ID during ID described in described notification of user equipment is shown is by other subscriber equipmenies for described subscriber equipment generation interference.

22. methods as claimed in claim 20,

Described ID table is structured to and comprises the first set and the second set, from described the first set, select the ID for described subscriber equipment, and from described the first set or described the second set, select for there is the ID of other subscriber equipmenies of disturbing with described subscriber equipment.

23. methods as claimed in claim 21,

Described first notifies described subscriber equipment for using by the signaling of 1 code word setting,

4 values in described 1 code word represent respectively following 4 kinds of settings of 1 layer signal: the first port and an ID; The first port and the 2nd ID; The second port and an ID; And second port and the 2nd ID,

Described second portion is used for using new bit to notify described subscriber equipment.

24. methods as claimed in claim 22,

Described physical layer signaling comprises following part:

First, will be for described subscriber equipment to which ID in described first set of ID table described in described notification of user equipment; And

Third part, to the switching between the first set described in described notification of user equipment and described the second set, as the interference ID space of the alternative of the ID being used by described other subscriber equipmenies.

25. methods as claimed in claim 24,

Described first is used for using new bit to notify described subscriber equipment,

Described third part is for being used the signaling of being set by 1 code word to notify described subscriber equipment, and wherein retention represents the switching between described the first set and described the second set,

Make fixing the first port or the second port of using of described subscriber equipment, and

Does not change in the blind Detecting space of described subscriber equipment.

26. methods as claimed in claim 24,

When described subscriber equipment receives the described third part sending from sending point device in subframe n, described subscriber equipment sends to described sending point device by positive response or negative response signal in subframe n+4,

If described sending point device receives positive response or the negative response signal sending from described subscriber equipment, described sending point device and described subscriber equipment both sides all carry out described switching in subframe n+5,

If described sending point device had not both received positive response signal from described subscriber equipment and do not received negative response signal yet, described sending point device and described subscriber equipment are not all carried out described switching.

27. methods as claimed in claim 20,

ID in described ID table is one or more in ZuID, community ID and user equipment specific ID.

28. methods as claimed in claim 27,

According to following equation, generate the random seed based on described group of ID:

In described equation, c _initrepresent described random seed, n _srepresent timeslot number, group_id represents described group of ID.

29. methods as claimed in claim 20,

Described signal is the one in the control signal of reference signal, control channel and the data-signal of data channel.

30. sending point devices, send to subscriber equipment by the signal that is assigned to the predetermined Radio Resource of at least one deck Resource Block with identical time resource and frequency resource, and this sending point device comprises:

Notification unit, the ID that will use in described notification of user equipment ID being shown by physical layer signaling or user equipment specific high-level signaling, described ID table sends to described subscriber equipment by high-level signaling, and described ID table is the subset in all ID space, comprises the ID that described subscriber equipment can be used;

Random seed generation unit, the ID based on described notice generates random seed;

Initialization unit, carries out initialization by described random seed to scramble sequence;

Scrambling unit, has carried out initialized scramble sequence described in use described signal has been carried out to scrambling; And

Sending and receiving unit, sends to described subscriber equipment by the described Resource Block that has carried out the signal of scrambling described in having.

31. sending point as claimed in claim 30 devices,

Described physical layer signaling comprises following part:

First, will be for described subscriber equipment to which ID in ID table described in described notification of user equipment; And

Second portion, which ID during ID described in described notification of user equipment is shown is by other subscriber equipmenies for described subscriber equipment generation interference.

32. sending point as claimed in claim 30 devices,

Described ID table is structured to and comprises the first set and the second set, ID for described subscriber equipment is selected from described the first set, selected from described the first set or described the second set for the ID of other subscriber equipmenies with described subscriber equipment generation interference.

33. sending point as claimed in claim 31 devices,

Described first is for being used the signaling of being set by 1 code word to notify described subscriber equipment, and 4 values in described 1 code word represent respectively following 4 kinds of settings of 1 layer signal: the first port and an ID; The first port and the 2nd ID; The second port and an ID; And second port and the 2nd ID,

Described second portion is used for using new bit to notify described subscriber equipment.

34. sending point as claimed in claim 32 devices,

Described physical layer signaling comprises following part:

First, is used the new bit will be for described subscriber equipment to which ID in described first set of ID table described in described notification of user equipment; And

Third part, by using the retention of the signaling of being set by 1 code word, to the switching between the first set described in described notification of user equipment and described the second set, as the interference ID space of the alternative of the ID being used by described other subscriber equipmenies.

35. subscriber equipmenies, receive the signal of the predetermined Radio Resource be assigned at least one deck Resource Block with identical time resource and frequency resource from sending point device, this subscriber equipment comprises:

Sending and receiving unit, from described sending point device, receive described Resource Block and physical layer signaling or user equipment specific high-level signaling, described physical layer signaling or described user equipment specific high-level signaling are to the ID that will use in described notification of user equipment ID table, described ID table is sent to described subscriber equipment by high-level signaling, described ID table is the subset in all ID space, comprises the ID that described subscriber equipment can be used; And

Demodulating unit detects described Resource Block and obtains described signal in time domain and/or frequency domain,

Described signal is used and has carried out initialized scramble sequence by scrambling by random seed, and the ID of described random seed based on described notice is generated.

36. subscriber equipmenies as claimed in claim 35,

Described physical layer signaling comprises following part:

First, will be for described subscriber equipment to which ID in ID table described in described notification of user equipment; And

Second portion, which ID during ID described in described notification of user equipment is shown is by other subscriber equipmenies for described subscriber equipment generation interference.

37. subscriber equipmenies as claimed in claim 35,

Described ID table is structured to and comprises the first set and the second set, ID for described subscriber equipment is selected from described the first set, selected from described the first set or described the second set for the ID of other subscriber equipmenies with described subscriber equipment generation interference.

38. subscriber equipmenies as claimed in claim 36,

Described first is for being used the signaling of being set by 1 code word to notify described subscriber equipment, and 4 values in described 1 code word represent respectively following 4 kinds of settings of 1 layer signal: the first port and an ID; The first port and the 2nd ID; The second port and an ID; And second port and the 2nd ID,

Described second portion is used for using new bit to notify described subscriber equipment.

39. subscriber equipmenies as claimed in claim 37,

Described physical layer signaling comprises following part:

First, is used the new bit will be for described subscriber equipment to which ID in described first set of ID table described in described notification of user equipment; And

Third part, by using the retention of the signaling of being set by 1 code word, to the switching between the first set described in described notification of user equipment and described the second set, as the interference ID space of the alternative of the ID being used by described other subscriber equipmenies.

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