CN102595596B - CSI transmission method and apparatuses - Google Patents

Abstract

The embodiment of the invention, which relates to the communication technology field, provides a channel state information (CSI) transmission method and apparatuses, so that resources in a frequency domain can be effectively utilized. The CSI transmission method comprises: a base station sends transmission configuration information of CSI to user equipment, wherein the transmission configuration information includes transmission mode information that is used for indicating user equipment to report the CSI through a physical uplink shared channel (PUSCH) and report time information that is used for indicating the time for reporting the CSI by the user equipment; the base station sends CSI scheduling information to the user equipment by uplink grant (UL Grant) information; and the base station receives the CSI that is reported by the user equipment based on the transmission configuration information and the scheduling information. According to the invention, the CSI transmission method and the apparatuses can be applied to a wireless communication system.

Description

The transmission method of a kind of CSI and device

Technical field

The present invention relates to communication technical field, particularly relate to transmission method and the device of a kind of CSI.

Background technology

In Long Term Evolution LTE (Long Term Evolution) system, in order to support that descending self-adapting is dispatched, UE needs the channel condition information CSI (ChannelState Information) reporting descending carrier to base station.Wherein, CSI comprises channel quality indicator (CQI) (Channel QualityIndicator), pre-coding matrix instruction PMI (Precoding Matrix Indicator) and order instruction (RI, Rank Indicator) etc.The reporting of CSI comprise cycle CSI report (PeriodicReporting) and aperiodic CSI report (Aperiodic Reporting) two kinds, wherein, when not having upstream data to send, cycle CSI is sent by physical layer ascending control channel PUCCH (Physical Uplink Control channel), and when having upstream data to send, sent by Physical Uplink Shared Channel PUSCH (Physical Uplink Shared Channel); Aperiodic, CSI was sent by PUSCH.

In order to improve peak rate, meet the demand of future communication systems to data rate, strengthen Long Term Evolution LTE-A (Long Term Evolution Advanced) system and introduce carrier aggregation CA (Carrier Aggregation) technology, namely can receive simultaneously or launch multiple unit carrier wave CC (Component Carrier).Such as, LTE-A version 10 (Rel-10, Release10) has supported maximum 5 descending carriers polymerization, also may expand further in the future.In order to support the adaptive scheduling of each downlink member carrier, need the CSI feeding back each downstream units carrier wave.In addition, most scene of time division multiplexing TDD (Time Division Dual) system is all that descending sub frame is more than sub-frame of uplink, therefore, under carrier aggregation scene, under the carrier aggregation scene of particularly TDD, each need the CSI information bit of feedback comparatively LTE greatly increase, and a PUCCH in LTE system can only carry at most the cycle CSI of 11 bits, be difficult to satisfy the demands, so need cycle CSI to be configured on PUSCH to transmit, ensure transmission precision.Like this, how the transmission of CSI dispatching cycle on PUSCH is a problem needing to solve.But the method be configured by high-level signaling proposed in prior art belongs to semi-static configuration, cannot realize the schedule information of flexible configuration cycle CSI.

Summary of the invention

The main purpose of embodiments of the invention is, provides transmission method and the device of a kind of CSI, can the schedule information of flexible configuration CSI.

On the one hand, The embodiment provides the transmission method of a kind of CSI, comprising:

Base station is to the transmission of configuration information of subscriber equipment transmitting channel state information CSI, wherein, described transmission of configuration information comprises transmission mode information and reports time information, described transmission mode information is used to indicate subscriber equipment and reports CSI by physical layer Uplink Shared Channel PUSCH, described in report time information to be used to indicate the moment of user equipment to report CSI;

Described base station sends the schedule information of CSI to described subscriber equipment by uplink authorization information UL Grant (Uplink Grant);

Described base station receives the CSI of described subscriber equipment according to described transmission of configuration information and described reporting of scheduling information (SI).

On the other hand, The embodiment provides the transmission method of a kind of CSI, comprising:

Subscriber equipment receives the transmission of configuration information of the CSI that base station sends, wherein, described transmission of configuration information comprises transmission mode information and reports time information, described transmission mode information is used to indicate subscriber equipment and reports CSI by physical layer Uplink Shared Channel PUSCH, described in report time information to be used to indicate the moment of described user equipment to report CSI;

Described subscriber equipment receives the schedule information of the CSI that described base station is sent to described subscriber equipment by UL Grant;

Described subscriber equipment reports CSI by PUSCH to described base station according to described transmission of configuration information and described schedule information.

Another aspect, The embodiment provides a kind of base station, comprising:

Transmitting element, for the transmission of configuration information to subscriber equipment transmitting channel state information CSI, wherein, described transmission of configuration information comprises transmission mode information and reports time information, described transmission mode information is used to indicate subscriber equipment and reports CSI by physical layer Uplink Shared Channel PUSCH, described in report time information to be used to indicate the moment of user equipment to report CSI; Sent the schedule information of CSI to described subscriber equipment by uplink authorization information UL Grant;

First receiving element, for receiving the CSI of described transmission of configuration information that described subscriber equipment sends according to described transmitting element and described reporting of scheduling information (SI).

Again on the one hand, The embodiment provides a kind of subscriber equipment, comprising:

Second receiving element, for receiving the transmission of configuration information of the CSI that base station sends, wherein, described transmission of configuration information comprises transmission mode information and reports time information, described transmission mode information is used to indicate subscriber equipment and reports CSI by physical layer Uplink Shared Channel PUSCH, described in report time information to be used to indicate the moment of described user equipment to report CSI; Receive the schedule information of the CSI that described base station is sent to described subscriber equipment by UL Grant;

Report unit, for according to described second receiving element receive described transmission of configuration information and described schedule information report CSI by PUSCH to described base station.

After adopting technique scheme, the transmission method of the CSI that the embodiment of the present invention provides, base station and subscriber equipment, base station is prenoticed subscriber equipment and is used PUSCH to report CSI, the schedule information of CSI is sent afterwards by UL Grant, reporting of CSI is carried out with the schedule information making subscriber equipment specify according to UL Grant, therefore, the flexible configuration of CSI schedule information can be carried out in base station by UL Grant.

Accompanying drawing explanation

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

A kind of flow chart of the transmission method of the CSI that Fig. 1 provides for the embodiment of the present invention;

A kind of flow chart of the transmission method of the CSI that Fig. 2 provides for the embodiment of the present invention;

The another kind of flow chart of the transmission method of the CSI that Fig. 3 provides for the embodiment of the present invention;

Fig. 4 is the exemplary plot reporting the moment determined in method shown in Fig. 3.

Fig. 5 is the another kind of exemplary plot reporting the moment determined in method shown in Fig. 3.

A kind of flow chart of the transmission method of the CSI that Fig. 6 provides for the embodiment of the present invention;

The structured flowchart of the base station that Fig. 7 provides for the embodiment of the present invention;

The another kind of structured flowchart of the base station that Fig. 8 provides for the embodiment of the present invention;

The another kind of structured flowchart of the base station that Fig. 9 provides for the embodiment of the present invention;

The structured flowchart of the subscriber equipment that Figure 10 provides for the embodiment of the present invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.

Should be clear and definite, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.

It is pointed out that in the embodiment of the present invention, CSI can feed back at least one in following information: RI, broadband P MI, broadband CQI and subband CQI.In addition, unit carrier wave in the present invention also available cell (Cell) concept substitute, such master unit carrier wave is also referred to as main plot (PCell, Primary Cell), auxiliary unit carrier wave is also referred to as auxiliary community (SCell, Secondary Cell).

As shown in Figure 1, the transmission method of a kind of CSI that the embodiment of the present invention provides, based on base station, comprising:

Step 101, base station sends the transmission of configuration information of CSI to subscriber equipment.

Wherein, described transmission of configuration information comprises transmission mode information and reports time information, described transmission mode information is used to indicate subscriber equipment and reports CSI by physical layer Uplink Shared Channel PUSCH, described in report time information to be used to indicate the moment of user equipment to report CSI.

Step 102, base station sends the schedule information of CSI to described subscriber equipment by uplink authorization information UL Grant.

Wherein, the schedule information of described CSI is used to indicate the frequency domain resource of described user equipment to report CSI, and modulation coding mode MCS (Modulation and Coding Scheme) etc. some report to need during CSI according to relevant scheduling parameter.

Step 103, base station receives the CSI of described subscriber equipment according to described transmission of configuration information and described reporting of scheduling information (SI).

The transmission method of the CSI that the embodiment of the present invention provides, base station is prenoticed subscriber equipment and is used PUSCH to report CSI, the schedule information of CSI is sent afterwards by UL Grant, reporting of CSI is carried out with the schedule information making subscriber equipment specify according to UL Grant, therefore, the flexible configuration of CSI schedule information can be carried out in base station by UL Grant.And base station can be that subscriber equipment selects suitable frequency domain resource and MCS according to variations situation, more effectively can utilize frequency domain resource.

Corresponding with the method shown in Fig. 1, as shown in Figure 2, the transmission method of a kind of CSI that the embodiment of the present invention provides, based on the subscriber equipment that above-mentioned base station is served, comprising:

Step 201, subscriber equipment receive the transmission of configuration information of the CSI that base station sends.

Wherein, described transmission of configuration information comprises transmission mode information and reports time information, described transmission mode information is used to indicate subscriber equipment and reports CSI by physical layer Uplink Shared Channel PUSCH, described in report time information to be used to indicate the moment of described user equipment to report CSI;

Step 202, subscriber equipment receive the schedule information of the CSI that described base station is sent to described subscriber equipment by UL Grant.

Step 203, subscriber equipment report CSI by PUSCH to described base station according to described transmission of configuration information and schedule information.

Concrete, what subscriber equipment indicated at described transmission of configuration information reports the moment, in the frequency domain resource that described schedule information indicates, reports CSI by PUSCH to described base station.

The transmission method of the CSI that the embodiment of the present invention provides, subscriber equipment under the configuration of base station and scheduling, can use PUSCH, and carries out reporting of CSI according to the frequency domain resource that UL Grant specifies, therefore, the flexible configuration of CSI schedule information can be carried out in base station by UL Grant.Subscriber equipment can send CSI on the preferred channel that base station is its configuration, frequency domain resource can be made to utilize more effective.

Below by the transmission method of specific embodiment to CSI of the present invention, following specific embodiment is described for cycle CSI, is understandable that, the present invention is not limited thereto.

As shown in Figure 3, be a specific embodiment of the transmission method of CSI of the present invention.The present embodiment can certainly be applied to other scenes under being applied to the scene of multiple downstream units carrier aggregation, and described CSI is specially the CSI of downstream units carrier wave.In order to more effectively utilize frequency domain resource, in the present embodiment, the downstream units carrier wave in a CA system is divided into groups, downstream units carrier wave is divided at least one group, concrete packet mode can be that base station is configured by high-level signaling, also can be predefined.For example, can divide into groups according to by the frequency range (band) of downstream units carrier wave, such as: when the downstream units carrier wave of band 3 and band 7 does carrier aggregation, the downstream units carrier wave of all band 3 is one group, and the downstream units carrier wave of all band 7 is one group; Also can divide into groups according to the carrier type of downstream units carrier wave, such as: master unit carrier wave PCC (Primary Component Carrier) and auxiliary unit carrier wave SCC (Secondary Component Carrier) is divided into different groups.It should be noted that, preferably, divide into groups fewer, the scheduling of base station is simpler, namely for report the moment to plan and Resourse Distribute simpler effective.

As shown in Figure 3, the present embodiment comprises:

Step 301, what base station determined that downstream units carries CSI wave period reports time information.

Concrete, described in report time information to comprise the report cycle N of the CSI of described downstream units carrier wave _pwith a described N _pinterior start offset amount N _oFFSET, the N that basis receives by subscriber equipment _pand N _oFFSET, report the moment according to formula (1) the cycle CSI of calculating, the moment namely meeting formula (1) be cycle CSI report the moment.

Wherein, n _ffor System Frame Number (System frame number), n _sit is the timeslot number (Slot number) in a radio frames.

Preferably, the determined time information that reports makes the moment that reports that each downstream units carries CSI wave period maximizedly to collide, and namely reports, more effectively to utilize frequency domain resource as much as possible simultaneously.

Concrete, the CSI of the described downstream units carrier wave of determined identical group of base station reports in time information, N _pvalue and N _oFFSETbe worth identical, base station determined difference group described downstream units carrier wave CSI report in time information, N _pvalue is different, N _oFFSETbe worth identical, and its medium and small N _pvalue is large N _pthe factor of value, namely little N _pvalue is necessary can by large N _pvalue divides exactly.

Illustrate, as shown in Figure 4, have group 1 and group 2 liang group downstream units carrier wave, each lattice represents 1 millisecond (ms), the N of group 1 and group 2 _oFFSETidentical, the N of the cycle CSI of group 1 _pfor 5ms, the N of the cycle CSI of group 2 _pfor 10ms, the N of the cycle CSI of group 1 _pthe N of the cycle CSI of group 2 _pthe factor, like this, as shown in Figure 4, maximizedly to collide making the moment that reports of group 1 and group 2.

It should be noted that, standard only can define N _pthe relation of value, N _oFFSETvalue is realized by implementation algorithm by base station, and the principle of algorithm is that the moment that reports that each downstream units carries CSI wave period is maximizedly collided, and namely reports as much as possible simultaneously.

And effectively report in period at cycle CSI, when there is semi-continuous scheduling SPS (Semi-Persistent Scheduling) data service, in this step, base station determines that the time information that reports that downstream units carries CSI wave period is specially:

Report cycle according to the transmission cycle of described SPS data service and the CSI of each group of downstream units carrier wave determines that the CSI's of described downstream units carrier wave reports time information, wherein, described in report time information to comprise the N of the CSI of described downstream units carrier wave _pwith a described N _pinterior N _oFFSET.

Preferably, the determined time information that reports makes the moment that reports of the business datum of moment and SPS data service that reports that each downstream units carries CSI wave period maximizedly to collide, namely report, more effectively to utilize frequency domain resource as much as possible simultaneously.

Concrete, the N of the transmission cycle of described SPS data service and the CSI of at least one group of downstream units carrier wave _ptime identical, the CSI of base station this at least one group of downstream units carrier wave determined reports in time information, N _pbe worth identical with the transmission cycle value of described SPS data service, N _oFFSETbe worth identical with the start offset value of described SPS data service in a transmission cycle;

The transmission cycle of described SPS data service is greater than the N of the CSI of at least one group of downstream units carrier wave _ptime, the CSI of base station this at least one group of downstream units carrier wave determined reports in time information, N _oFFSETbe worth identical with the start offset value of described SPS data service in a transmission cycle, N _pvalue is the factor of the transmission cycle value of described SPS data service;

The transmission cycle of described SPS data service is less than the N of the CSI of at least one group of downstream units carrier wave _ptime, the CSI of base station this at least one group of downstream units carrier wave determined reports in time information, N _oFFSETbe worth identical with the start offset value of described SPS data service in a transmission cycle, N _pvalue is the multiple of the transmission cycle value of described SPS data service.

Illustrate as shown in Figure 5, have group 1 and group 2 liang group downstream units carrier wave, the N of the cycle CSI of group 1 _pfor 5ms, the N of the cycle CSI of group 2 _ptransmission cycle for 10ms, SPS data service is 20ms, the N of the cycle CSI of group 1 _pthe N of the cycle CSI of group 2 _pthe factor, the N of cycle CSI of group 1 and group 2 _pbe the factor of the transmission cycle of SPS data service, therefore, the transmission time of SPS data service, the moment that reports of the cycle CSI of group 1 and group 2 collides maximized.

In addition, it should be noted that, when there is fine setting in the business data transmission cycle of SPS data service, such as, some ascending-descending subframes for TDD system configures, Subframe Offset (sub-frame offset) can be configured to " 0 " or a certain particular value, when being configured to other value, can finely tune the cycle, such as delivery time is: 0,9,20,29,30......, the moment that reports that the determined each group of downstream units in base station carries CSI wave period needs to finely tune according to the business data transmission cycle of SPS data service.

It should be noted that, standard only can define N _pthe relation of value, N _oFFSETvalue is realized by implementation algorithm by base station, the principle of algorithm be make each downstream units carry CSI wave period report that the transmission time of the business datum of moment and SPS data service is maximized to collide.

Above-mentioned base station determines that downstream units carries the mode reporting time information of CSI wave period, and Resourse Distribute can be made more effective, and the availability of frequency spectrum is higher.Illustrate, when as shown in Figure 5, the independence supposing the cycle CSI of group 1 and group 2 is given the correct time each needs 0.5 Resource Block RB (Resource Block), and distribute in units of RB due to frequency domain resource, therefore, do not need during information transmission will distribute an integer RB during integer RB yet, if that is organize 1 and group 2 cycle CSI independent on give the correct time and respectively need 1RB, SPS data service data gives the correct time and needs 2RB, namely need 4 RB altogether; And in the embodiment of the present invention, owing to organizing 1, group 2 and SPS data service corresponding report/transmission time has the corresponding relation maximizing collision, therefore, cycle CSI and the SPS data service of group 1, group 2 there will be the moment reporting together/transmit, at this moment, only need 3RB, this improves the availability of frequency spectrum.And, above-mentioned base station determine downstream units carry CSI wave period report the mode of time information to reduce to report/transmission time, be beneficial to subscriber equipment economize on electricity.In addition, when the corresponding multiple semi-continuous scheduling bag such as business datum of cycle CSI and/or SPS data service needs to report/transmit, if report/transmission time do not plan, sometimes collide and transmit together, sometimes individual transmission is separated, scheduling meeting becomes very complicated, and particularly to the distribution of resource, aforesaid way effectively can simplify Resourse Distribute.

It is pointed out that when other scene exists multiple semi-continuous scheduling, above-mentioned base station also can be adopted to determine, and downstream units carries the mode reporting time information of CSI wave period.Such as, under heterogeneous network Hetnet (Heterogeneous Network) scene.

Step 302, base station sends the transmission of configuration information of cycle CSI to subscriber equipment by high-level signaling.

Wherein, described transmission of configuration information comprises transmission mode information and reports time information, described transmission mode information is used to indicate subscriber equipment and utilizes physical layer Uplink Shared Channel PUSCH report cycle CSI, described report time information be determine in step 301 report time information, be used to indicate the moment of user equipment to report cycle CSI, namely which moment report cycle CSI equipment for indicating user needs at.

Preferably, in this step, base station sends the transmission of configuration information of cycle CSI to subscriber equipment by high-rise radio resource control RRC (RadioResource Control) signaling, certainly, base station also sends the transmission of configuration information of cycle CSI by other high-level signaling, the present invention does not limit this.

When sending transmission mode information in base station by high-level signaling, bit field can be increased in described high-level signaling, utilize described bit field equipment for indicating user by PUSCH report cycle CSI; Or can carry specific transmission mode mark in described high-level signaling, this specific transmission mode mark is used to indicate subscriber equipment by PUSCH report cycle CSI.

Concrete, in this step, report time information to comprise report cycle N _pand the start offset amount N in a report cycle _oFFSETparameter, subscriber equipment can according to above-mentioned parameter, and that determines cycle CSI reports the moment.

It should be noted that, in CA system, comprise multiple downstream units carrier wave, in the present embodiment, optionally, different downstream units carries the transmission of configuration information separate configurations of CSI wave period, and namely each downstream units is carried the transmission mode information of CSI wave period and reported time information to need to carry out separate configurations.In addition, also can configure together by one group of downstream units transmission of configuration information of carrying CSI wave period.

Step 303, base station is configured for the ULGrant of the schedule information sending CSI to subscriber equipment.

Adopt UL Grant, can flexible configuration schedule information, such as: can optimal frequency domain resource be selected to report CSI according to the change of wireless channel in good time.

In up link, subscriber equipment may send data on PUSCH, also may send CSI, also may send data and CSI together.In this step, the schedule information of PUSCH is indicated by UL Grant, and how to distinguish the situation not having data, and namely UL Grant does not comprise the schedule information of data, and UL Grant needs to do further design, specific as follows.In addition, it should be noted that, data described in the present invention refer to Uplink Shared Channel (UL-SCH, Uplink Shared Channel) the upper transmission package (Transport Block) carried, can be dynamic dispatching (being called dynamic data in the present invention), also can be semi-continuous scheduling (being called semi-continuous scheduling data in the present invention).Wherein, UL-SCH belongs to the one of transmission channel (TransportChannel), i.e. a kind of information transfer service being provided to MAC (Medium AccessControl, multimedia access control) from physical layer.

In the present embodiment, adopt semi-persistent scheduling mechanism, it is semi-continuous scheduling information that base station configures to the schedule information of the cycle CSI of subscriber equipment, mean the schedule information (as: frequency domain resource is distributed, MCS etc.) of a UL Grant instruction, report the moment effectively to continue for some time at cycle CSI, until there is new UL Grant to occur, just change schedule information, then this schedule information periodically effectively continues for some time again, until new UL Grant occurs again.In this step, base station can be the frequency domain resource and MCS that user device configuration is suitable according to variations situation, therefore, it is possible to more effectively utilize frequency domain resource.

Wherein, described UL Grant can comprise the semi-continuous scheduling information of cycle CSI, or the semi-continuous scheduling information of semi-continuous scheduling SPS data, or comprises the semi-continuous scheduling information of cycle CSI and the semi-continuous scheduling information of semi-continuous scheduling SPS data simultaneously.The semi-continuous scheduling information of described cycle CSI is used to indicate the frequency domain resource of described user equipment to report cycle CSI, and need during some report cycles CSI such as MCS according to scheduling parameter.

Illustrate, well-known, base station carries out the scheduling such as Resourse Distribute by UL Grant to semi-continuous scheduling SPS data service, and in the embodiment of the present invention, sent the schedule information of CSI by UL Grant, therefore, described UL Grant can indicate the schedule information of CSI and the schedule information of SPS data simultaneously, certainly, the schedule information of CSI can also only be indicated.

Concrete, the UL Grant of the configurable three kinds of modes of this step, as follows:

Mode one: by the semi-continuous scheduling information of Downlink Control Information DCI (DownlinkControl Information) the configuration cycle CSI of SPS C-RNTI (SPS Cell Radio Network TemporaryIdentifiers, SPS Radio Network Temporary Identifier) scrambling.

When adopting the semi-continuous scheduling information of DCI configuration cycle CSI of SPS C-RNTI scrambling, when configuring even without SPS data service, base station also needs the DCI configuring SPS C-RNTI scrambling to use to cycle CSI.In addition, because the scheduling of SPS data service is also configured by the DCI of SPSC-RNTI scrambling, therefore, after RRC signaling opens SPS data service unlatching, need to distinguish the situation not having SPS data dispatch.If directly add 1 bit to indicate with or without data in DCI, the expense of DCI can be increased, increase the blind Detecting number of times of DCI.Therefore, optionally, the DCI of following form is adopted to indicate in the present embodiment:

A kind of configuration format is, the bit value in the new data instruction NDI territory of the DCI of described SPS C-RNTI scrambling is " 0 ", and the bit value in MCS and redundancy versions (RV, Redundancy version) territory is " 11101 " (i.e. I _mCS=29) or " 11110 " (i.e. I _mCS=30) or " 11111 " (i.e. I _mCS=31).The NDI territory of the DCI of SPS C-RNTI scrambling is set to " 0 " and represents newly/just pass, I _mCS=29/30/31 represents the different RV versions retransmitted, and NDI value is for representing time " 0 " that just passing is contradiction, and therefore these states are redundancies in existing system.Utilize redundant state to indicate, do not need to increase extra bit information expense.In order to reduce cyclic redundancy check (CRC) (Cyclic Redundancy Check) false alarm probability, MCS and the RV territory of 5 bits can be set to unique fixed value, such as only value " 11101 " (i.e. I _mCS=29).

In order to reduce CRC false alarm probability further, virtual cyclic redundancy check (CRC) (CRC, Cyclic Redundancy Check) position can be set, the bit value of each virtual CRC position is set for " 1 ".Here, preferably, the virtual CRC of bit, transmitting power control (the TPC of 2 bits can be comprised, Transmit Power Control) demodulated reference signal (DMRS of command field and 3 bits, Demodulation Reference Signal) at least one territory in cyclic shift (CS, CyclicShift) territory.As required, several in each territory can also only be selected.

Consider that MCS and RV territory has been fixed setting, loses the effect indicating current MCS, can pre-define order of modulation, such as: be defined previously as QPSK modulation (order of modulation is 2); Also current MCS can be configured by high-level signaling; Also new territory can be selected to indicate MCS, namely do original territory and heavily explain, such as: can select TPC command territory, DMRS cyclic shift territory etc. indicates MCS.It should be noted that, after selection is as instruction MCS territory, just can not be used as virtual CRC check position.Such as, after 2 bits in the TPC territory and DMRS cyclic shift territory of 2 bits are selected as the instructions field of MCS, the virtual CRC check position of 5 bits is just only left 1 originally.

Another kind of configuration format is that the bit value in the NDI territory of the DCI of described SPS C-RNTI scrambling is " 0 ", and the bit value of each virtual CRC position is " 1 ".Preferably, virtual CRC can comprise TPC command territory, at least one territory in DMRS cyclic shift territory and MCS and RV territory.As required, only can select several in each territory, such as, in MCS and RV territory, only select highest significant position (MSB, Most Significant Bit) as virtual CRC position.When in MCS and RV territory, when the highest significant position that only have selected MCS and the RV territory of 1 bit is as virtual CRC position, subscriber equipment is understanding I by MCS and RV territory _mCStime, only with reference to 4 least significant bits (LSB, Least Significant Bit) in MCS and RV territory, such as, current MCS and RV territory is " 11001 ", and 1 MSB position is " 1 ", 4 LSB are " 1001 ", so subscriber equipment solution reads out current I _mCS=9.When in MCS and RV territory, have selected N (N be more than or equal to 1 integer) highest significant position of bit as virtual CRC position time, remaining bit can do to weigh and first explain, need standard predefine, such as, remain 1 bit, " 0 " represents QPSK, " 1 " represents 16QAM, and subscriber equipment is understanding I by MCS and RV territory _mCStime, only judge current MCS according to described remaining bit.The method is adopted not need to increase extra DCI overhead bit.

Particularly, the DCI of SPS C-RNTI scrambling can be descending control information format 0 (DCIformat 0), also can be DCI format 4, or other form.When the UL Grant of SPS C-RNTI scrambling is DCI format 4, there are two transmission block (TB, TransportBlock), at this moment the NDI territory configuration that two TB blocks are corresponding and MCS and RV territory configure and all adopt mentioned above principle, such as, the bit value in the NDI territory of transmission block TB1 and TB2 of DCI format 4 is " 0 ".In addition, in DCI format 4, the DMRS cyclic shift territory of 3 bits is called DMRS cyclic shift and OCC instructions field.

Mode two: by the semi-continuous scheduling information of the UL Grant configuration cycle CSI of C-RNTI scrambling.

Because the scheduling of data service is also configured by the UL Grant of C-RNTI scrambling, so need to distinguish the situation not having data to send, namely the UL Grant of C-RNTI scrambling is only used for the semi-continuous scheduling information of configuration cycle CSI, and described UL Grant only indicates the semi-continuous scheduling information of cycle CSI.

Under which, optionally, the UL Grant of following form can be adopted to distinguish:

1, the UL Grant of C-RNTI scrambling is DCI format 0.

A kind of configuration format is that the bit value in MCS and RV territory is " 00000 " (i.e. I _mCS=0), and the number of Physical Resource Block (PRB, Physical Resource Block) be greater than 1 integer;

Another kind of configuration format is that the bit value in MCS and the RV territory of 5 bits is " 11100 " (i.e. I _mCS=28), the number of PRB is set to 1;

Another configuration format is, the bit value in MCS and the RV territory of 5 bits is " 11110 " (i.e. I _mCS=30) or " 11111 " (i.e. I _mCS=31), CQI request territory is set to 1.Preferably the bit value in MCS and RV territory is " 11110 " (i.e. I herein _mCS=30), because RV version is 2 (I _mCS=30), its utilization rate comparatively RV version be 3 (I _mCS=31) low.

2, the UL Grant of C-RNTI scrambling is DCI format 4.

A kind of configuration format is that the bit value in MCS and the RV territory of 5 bits of TB1 and TB2 is " 00000 " (i.e. I _mCS=0), the number of PRB is set to the integer being greater than 1;

Another kind of configuration format is that the bit value in MCS and the RV territory of 5 bits of TB1 and TB2 is " 11100 " (i.e. I _mCS=28), the number of PRB is set to 1;

Another configuration format is, the bit value in MCS and the RV territory of 5 bits of TB1 and TB2 is " 11110 " (i.e. I _mCS=30) or " 11111 " (i.e. I _mCS=31), CQI request territory is set to 1.Preferably the bit value in MCS and RV territory is " 11110 " (i.e. I herein _mCS=30).

It should be noted that, except existing Format 0 and 4, when introducing new form, this principle also can be adopted to represent that UL Grant is only used to indicate the schedule information of CSI later.

Consider that MCS and RV territory has been fixed setting, loses the effect indicating current MCS, can pre-define order of modulation, such as: be defined previously as QPSK modulation (order of modulation is 2); Also current MCS can be configured by high-level signaling; Also new territory can be selected to indicate MCS, namely original territory is done and heavily explain.

Mode three: by the UL Grant configuration cycle CSI semi-continuous scheduling information of new C-RNTI scrambling.

High-rise interpolation information element (IE, Information element) configures new C-RNTI and comes to use to cycle CSI.

When adopting semi-continuous scheduling machine-processed, can also introduce the UL Grant of deexcitation, namely when receiving the UL Grant of deexcitation, subscriber equipment can the reporting of dwelling period CSI.For the UL Grant of deexcitation, the bit in itself MCS and RV territory can be set to " 1 " or " 0 " entirely, and/or, RB distributes and the bit of frequency-hopping resource instructions field (Resource Block AssignmentAnd Hopping Resource Allocation) can be set to " 1 " or " 0 " entirely, and/or the bit in TPC territory and DMRS cyclic shift territory can be set to " 1 " or " 0 " entirely.

Optionally, in the present embodiment, base station sends the semi-continuous scheduling information of the cycle CSI reporting the moment corresponding of the different report cycle of scheduling to described subscriber equipment by different UL Grant.As shown in Figure 4, there are 2 kinds of cycles, the UL Grant reporting the moment corresponding different of different cycles.

In addition, it is pointed out that in this step, base station can also adopt the mechanism of dynamic dispatching, and namely base station is configured for the UL Grant of the dynamic scheduling information sending CSI to subscriber equipment.Specifically there are 3 kinds of collocation methods:

Method one: the UL Grant using the C-RNTI scrambling being used for dynamic dispatching, reporting of each cycle CSI is all dispatched by a UL Grant or is triggered, at this moment, if subscriber equipment reports the moment not receive corresponding UL Grant at certain, then not report cycle CSI.It is pointed out that the UL Grant for the C-RNTI scrambling of dynamic dispatching will be distinguished with the UL Grant of the C-RNTI scrambling of the scheduling for data service.Concrete differentiating method can adopt the method for mode two (the semi-continuous scheduling information with the UL Grant configuration cycle CSI of C-RNTI scrambling) in this step.

Method two: use the UL Grant of SPS C-RNTI scrambling (not do semi-continuous scheduling to use, just this SPS C-RNTI multiplexing, attribute changes dynamic dispatching into), reporting of each cycle CSI is all dispatched by a UL Grant or is triggered, at this moment, if subscriber equipment reports the moment not receive corresponding UL Grant at certain, then not report cycle CSI.It is pointed out that after SPS data service is opened, need to distinguish the situation of SPS data service of not sending, i.e. the UL Grant of SPSC-RNTI scrambling is only used for the dynamic scheduling information of configuration cycle CSI.Concrete differentiating method can adopt the method for mode one (the semi-continuous scheduling information with the UL Grant configuration cycle CSI of SPS C-RNTI scrambling) in this step 303.

Method three: with the dynamic scheduling information of the UL Grant configuration cycle CSI of new C-RNTI scrambling.

Step 304, configured UL Grant sends semi-continuous scheduling information from cycle CSI to subscriber equipment is passed through in base station.

Before subscriber equipment transmission PUSCH carries out reporting of cycle CSI, need to know that base station configures to the schedule information of this subscriber equipment, in the present embodiment, the schedule information of cycle CSI is sent to subscriber equipment by UL Grant information by base station.

When base station configures different UL Grant to the CSI with different report cycle, in this step, there is described in described base station to be sent respectively to described subscriber equipment by the different UL Grant of described configuration the schedule information of the CSI of different report cycle.The moment is reported arbitrary, if described subscriber equipment needs to report at least two CSI with different report cycle, the schedule information that then base station only configures a kind of UL Grant comes into force, the UL Grant of described UL Grant corresponding to report cycle maximum in described multiple different report cycle.

Step 305, base station receives the CSI of described subscriber equipment according to described transmission of configuration information and reporting of scheduling information (SI).

The transmission method of the cycle CSI that the present embodiment provides, base station is prenoticed subscriber equipment and is used PUSCH report cycle CSI, afterwards by the frequency domain resource of UL Grant configure user equipment report cycle CSI and MCS etc., the frequency domain resource that subscriber equipment is specified according to UL Grant and MCS carry out reporting of cycle CSI by PUSCH, therefore, the flexible configuration of CSI schedule information can be carried out in base station by UL Grant, and can be that subscriber equipment selects suitable frequency domain resource and MCS according to variations situation, thus frequency domain resource is more effectively utilized.In addition, base station is also optimized the moment that reports of cycle CSI, simplifies Resourse Distribute further, improves the availability of frequency spectrum.

Corresponding with the method shown in Fig. 3, as described in Figure 6, be a specific embodiment of the transmission method of CSI of the present invention, this specific embodiment is described for cycle CSI, is understandable that, the present invention is not limited thereto.Comprise:

Step 401, subscriber equipment receives the transmission of configuration information of the cycle CSI that base station is sent by high-level signaling.

Subscriber equipment can, according to described transmission of configuration information, be determined to carry out reporting of cycle CSI by PUSCH, and report cycle CSI report the moment.Wherein, described high-level signaling is preferably RRC signaling.Concrete, described in report time information to comprise the report cycle N of the CSI of described downstream units carrier wave _pwith a described N _pinterior start offset amount N _oFFSET, the N that basis receives by subscriber equipment _pand N _oFFSET, report the moment according to aforementioned formula (1) the cycle CSI of calculating.

Step 402, subscriber equipment receives described base station by the semi-continuous scheduling information of UL Grant to the cycle CSI that described subscriber equipment sends.

Wherein, described UL Grant can comprise the semi-continuous scheduling information of cycle CSI, or the semi-continuous scheduling information of semi-continuous scheduling SPS data, or comprises the semi-continuous scheduling information of cycle CSI and the semi-continuous scheduling information of semi-continuous scheduling SPS data simultaneously.

Subscriber equipment according to described semi-continuous scheduling information, can determine the frequency domain resource and MCS etc. of report cycle CSI.

Concrete, in this step, the configuration mode of the UL Grant that subscriber equipment receives refers to previous embodiment, repeats no more here.

In addition, it is pointed out that in this step, base station can also adopt the mechanism of dynamic dispatching, and namely subscriber equipment receives the UL Grant that base station sends, and sends cycle CSI, specifically have 3 kinds of methods according to this dynamic scheduling information:

Method one: the UL Grant using the C-RNTI scrambling being used for dynamic dispatching, reporting of each cycle CSI is all dispatched by a UL Grant or is triggered, at this moment, if subscriber equipment reports the moment not receive corresponding UL Grant at certain, then not report cycle CSI.It is pointed out that the UL Grant for the C-RNTI scrambling of dynamic dispatching will be distinguished with the UL Grant of the C-RNTI scrambling of the scheduling for data service.Concrete differentiating method can adopt the method for mode two (the semi-continuous scheduling information with the UL Grant configuration cycle CSI of C-RNTI scrambling) in this step 402.

Method two: use the UL Grant of SPS C-RNTI scrambling (not do semi-continuous scheduling to use, just this SPS C-RNTI multiplexing, attribute changes dynamic dispatching into), reporting of each cycle CSI is all dispatched by a UL Grant or is triggered, at this moment, if subscriber equipment reports the moment not receive corresponding UL Grant at certain, then not report cycle CSI.It is pointed out that after SPS data service is opened, need to distinguish the situation of SPS data service of not sending, i.e. the UL Grant of SPSC-RNTI scrambling is only used for the dynamic scheduling information of configuration cycle CSI.Concrete differentiating method can adopt the method for mode one (the semi-continuous scheduling information with the UL Grant configuration cycle CSI of SPS C-RNTI scrambling) in this step 402.

Method three: with the dynamic scheduling information of the UL Grant configuration cycle CSI of new C-RNTI scrambling.

Step 403, what subscriber equipment indicated at described transmission of configuration information reports the moment, in the frequency domain resource of described semi-continuous scheduling information instruction, by PUSCH report cycle CSI.

In the present embodiment, the schedule information inside UL Grant comprises frequency domain resource and distributes, i.e. the distribution of RB.When multiple semi-continuous scheduling needs to send, and delivery time is different again, and Resourse Distribute can become complicated.In order to simplify Resourse Distribute, base station side has carried out the optimization reporting the moment (described in step 301).For example, as shown in Figure 5, in this step, by the frequency domain resource size needing distribution 3 kinds different, meet group 1 cycle, CSI sent separately time, together with the cycle CSI of group 1 and group 2 when sending, 3 kinds of demands when sending together with cycle CSI and SPS of group 1 and group 2.And for different cycle CSI, different UL Grant be configured and carry out resource distribution.In this case, in this step, subscriber equipment can adopt following two kinds of mode process:

Mode one: report the moment arbitrary, if need to report at least two CSI with different report cycle, then only carry out reporting of CSI according to the schedule information of a kind of UL Grant, described UL Grant for described in UL Grant corresponding to report cycle maximum at least two different report cycles; Namely the moment is reported at the cycle CSI compared with large period, only can carry out Resourse Distribute according to the UL Grant corresponding compared with large period, the frequency domain resource engraved during certain periodic report that UL Grant indicates is to all cycle CSI information datas that will transmit engraved when should report.Particularly, as shown in Figure 4,2 kinds of cycles are had, the ULGrant reporting the moment corresponding different of different cycles.When group 1 and group 2 cycle, CSI occurred simultaneously time, the cycle CSI of transmission group 1 and group 2 in the frequency domain resource that the UL Grant that the group 2 (large period) that priority is high is corresponding indicates.

When there is SPS data service, the moment is reported arbitrary, if need report at least one CSI with different report cycle and transmit SPS data service, then only carry out the transmission with SPS data service that reports of CSI according to the schedule information of a kind of ULGrant, the UL Grant corresponding to the cycle maximum in the transmission cycle of the report cycle that described ULGrant is described CSI and described SPS data service.Particularly, as shown in Figure 5,3 kinds of cycles are had, the UL Grant reporting the moment corresponding different of different cycles.When group 1 and group 2 cycle, CSI occurred simultaneously time, the cycle CSI of transmission group 1 and group 2 in the frequency domain resource that the UL Grant that the group 2 (large period) that priority is high is corresponding indicates; When group 1 occurs with the cycle CSI and SPS data service that organize 2 simultaneously, transmission group 1 and cycle CSI and the SPS data service of organizing 2 in the frequency domain resource that the ULGrant that the SPS data service (large period) that priority is high is corresponding indicates.

Such transmission effectively can improve the availability of frequency spectrum, suppose when SPS data service, group 1 cycle CSI and group 2 cycle CSI separate configurations resource time need 3 RB respectively, 1RB and 1RB, but when reporting CSI according to this mode of mode one, the frequency domain resource engraved when SPS reports comprises 4 RB, for transmitting cycle CSI and the SPS data service of group 1 and group 2; Group 2 cycle, CSI reported time the frequency domain resource that engraves comprise 2 RB, for transmitting the cycle CSI of group 1 and group 2; Group 1 cycle, CSI reported time the frequency domain resource that engraves comprise 1 RB, for transmitting the cycle CSI of group 1.Only need 4 RB when transmitting together with i.e. SPS data service, group 1 and the cycle CSI organizing 2, save 1 RB.

Mode two: report the moment arbitrary, if need to report at least two CSI with different report cycle, carries out reporting of cycle CSI according to the determined frequency domain resource of frequency domain expansion signaling of predetermined frequency area extension rule or described base station notice;

When there is SPS data service, the moment is reported arbitrary, if need report at least one CSI with different report cycle and transmit SPS data service, the determined frequency domain resource of frequency domain expansion signaling notified according to predetermined frequency area extension rule or described base station carries out the transmission of reporting of cycle CSI and SPS data service.

The cycle CSI information of difference group indicates the frequency domain resource needed separately respectively with different UL Grant, the rule notified by pre-defined rule or high-level signaling when different information is run into time is carried out frequency domain resource and reshuffled.In addition, the MCS rule change when different information is run into time also can be pre-defined or be notified by high-level signaling.

Particularly, pre-defined rule can be: when different information is run into time, and frequency spectrum resource is the superposition of the frequency domain resource that UL Grant corresponding to different information indicates; When different information is run into time, frequency spectrum resource be the frequency domain resource that UL Grant corresponding to a certain information indicates M the RB of increase up or down (M be greater than 1 integer).

What high-level signaling can notify is specifically adopts for which kind of predefine rule, and what also can notify is M value in above-mentioned rule.

Illustrate, equally Figure 5 shows that example, give SPS respectively that the cycle CSI of group 1 and cycle CSI separate configurations 3 RB, 1RB and 1RB of group 2, when 3 kinds of information are transmitted together time, expand 2 RB downwards automatically according to the resource of SPS configuration; When group 1 cycle CSI and group 2 cycle, CSI ran into time, according to group 2 configure resource automatically downwards expand 1 RB.

It should be noted that, report the moment at arbitrary cycle CSI, when user equipment monitors is to the UL Grant of the C-RNTI scrambling for dynamic dispatching, this step is preferably carved at this moment and is configured according to the schedule information of this UL Grant.

In addition, when base station adopts machine-processed CSI dispatching cycle of dynamic dispatching, subscriber equipment is pressed dynamic scheduling information and is sent cycle CSI.Reporting of each cycle CSI is all dispatched by a UL Grant or is triggered, at this moment, if subscriber equipment reports the moment not receive corresponding ULGrant at certain, then and not report cycle CSI.

The transmission method of the cycle CSI that the present embodiment provides, subscriber equipment can under the configuration of base station and scheduling, use PUSCH, and carry out reporting of cycle CSI according to the frequency domain resource that UL Grant specifies, therefore, the flexible configuration of CSI schedule information can be carried out in base station by UL Grant, subscriber equipment can send cycle CSI on preferred channel, frequency domain resource can be made to utilize more effective.

Corresponding with preceding method, the embodiment of the present invention additionally provides a kind of base station, as shown in Figure 7, comprising:

Transmitting element 10, for the transmission of configuration information to subscriber equipment transmitting channel state information CSI, wherein, described transmission of configuration information comprises transmission mode information and reports time information, described transmission mode information is used to indicate subscriber equipment and reports CSI by physical layer Uplink Shared Channel PUSCH, described in report time information to be used to indicate the moment of user equipment to report CSI; Sent the schedule information of CSI to described subscriber equipment by uplink authorization information UL Grant;

First receiving element 11, for receiving the CSI of described transmission of configuration information that described subscriber equipment sends according to transmitting element 10 and reporting of scheduling information (SI).

The base station that the embodiment of the present invention provides, can prenotice subscriber equipment uses PUSCH to report CSI, the frequency domain resource and MCS etc. of CSI is reported afterwards by UL Grant notifying user equipment, the frequency domain resource of specifying according to UL Grant to make subscriber equipment and MCS carry out reporting of CSI, therefore, it is possible to carried out the flexible configuration of CSI schedule information by UL Grant.And, can also be that subscriber equipment selects suitable frequency domain resource and MCS according to variations situation, more effectively can utilize frequency domain resource.

Wherein, transmitting element 10 is specifically for sending the transmission of configuration information of CSI to subscriber equipment by high-level signaling, described high-level signaling is preferably radio resource control RRC signaling.

In one embodiment of the invention, as shown in Figure 8, described base station also comprises dispensing unit 12, for configuring described UL Grant for transmitting element 10, the UL Grant configured is the DCI of SPS C-RNTI scrambling, the DCI of the described SPS C-RNTI scrambling after configuration does not comprise the schedule information of data, and meets one of following two kinds of configurations:

First configuration comprises: the bit value in the new data instruction NDI territory of the DCI of described SPS C-RNTI scrambling is " 0 ", and the bit value in MCS and RV territory is " 11101 " or " 11110 " or " 11111 ";

Second configuration comprises: the bit value in the NDI territory of the DCI of described SPS C-RNTI scrambling is " 0 ", and the bit value of each virtual CRC position is " 1 ";

In another embodiment of the present invention, the UL Grant that dispensing unit 12 configures is the DCI of C-RNTI scrambling, and the DCI of the described SPS C-RNTI scrambling after configuration does not comprise the schedule information of data, and meets one of following three kinds of configurations:

3rd configuration comprises: the bit value in MCS and the RV territory of the DCI of described C-RNTI scrambling is " 00000 ", and the number of Physical Resource Block PRB be greater than 1 integer;

4th configuration comprises: the bit value in MCS and the RV territory of the DCI of described C-RNTI scrambling is " 11100 ", and the number of PRB is 1;

5th configuration comprises: the bit value in described MCS and RV territory is " 11110 " or " 11111 ", and the bit value in CQI request territory is " 1 ";

At this moment, the described ULGrant specifically for being configured by dispensing unit 12 is sent the schedule information of CSI by transmitting element 10 to described subscriber equipment.

Optionally, dispensing unit 12 also can be used for configuring different UL Grant to the CSI with different report cycle; Then, transmitting element 10 the different UL Grant specifically for being configured by dispensing unit 12 is sent respectively to subscriber equipment described in there is the schedule information of the CSI of different report cycle.

Under the base station that the embodiment of the present invention provides can be applicable to the scene of multiple downstream units carrier aggregation.In a CA system, there is multiple downstream units carrier wave, in order to more effectively utilize frequency spectrum resource, downstream units carrier wave in a CA system can be divided into groups, downstream units carrier wave is divided at least one group.At this moment, described CSI is specially the CSI of downstream units carrier wave, then, further, as described in Figure 9, the base station of the embodiment of the present invention also comprises determining unit 13, for determining that the CSI's of described downstream units carrier wave reports time information, described report time information to comprise the CSI of described downstream units carrier wave report cycle and a described report cycle in start offset amount, to make:

The CSI of the downstream units carrier wave of identical group reports in time information, described report cycle value is identical with start offset value, the CSI of the downstream units carrier wave of different group reports in time information, described report cycle value is different, described start offset value is identical, and its medium and small report cycle value is the factor of large report cycle value.

When there is SPS data service, determining unit 13 is further used for determining that the CSI's of described downstream units carrier wave reports time information according to the report cycle of the transmission cycle of described SPS data service and the CSI of each group of downstream units carrier wave, wherein, described report time information to comprise the CSI of described downstream units carrier wave report cycle and a described report cycle in start offset amount, to make:

When the transmission cycle of described SPS data service is identical with the report cycle of the CSI of at least one group of downstream units carrier wave, the CSI of described at least one group of downstream units carrier wave reports in time information, described report cycle is identical with the transmission cycle of described SPS data service, and described start offset amount is identical with the start offset amount of described SPS data service in a transmission cycle;

When the transmission cycle of described SPS data service is greater than the report cycle of the CSI of at least one group of downstream units carrier wave, the CSI of described at least one group of downstream units carrier wave reports in time information, described start offset value is identical with the start offset value of described SPS data service in a transmission cycle, and described report cycle value is the factor of the transmission cycle value of described SPS data service;

When the transmission cycle of described SPS data service is less than the report cycle of the CSI of at least one group of downstream units carrier wave, the CSI of described at least one group of downstream units carrier wave reports in time information, described start offset value is identical with the start offset value of described SPS data service in a transmission cycle, and described report cycle value is the multiple of the transmission cycle value of described SPS data service.

At this moment, transmitting element 10 is by specifically for sending the transmission of configuration information of CSI to subscriber equipment, and wherein, what described transmission of configuration information comprised that transmission mode information and determining unit 13 determine reports time information.

Corresponding with preceding method, the embodiment of the present invention additionally provides a kind of subscriber equipment, as shown in Figure 10, comprising:

Second receiving element 20, for receiving the transmission of configuration information of the CSI that base station sends, wherein, described transmission of configuration information comprises transmission mode information and reports time information, described transmission mode information is used to indicate subscriber equipment and reports CSI by physical layer Uplink Shared Channel PUSCH, described in report time information to be used to indicate the moment of described user equipment to report CSI; Receive the schedule information of the CSI that described base station is sent to described subscriber equipment by UL Grant;

Report unit 21, for according to second receiving element 20 receive transmission of configuration information and schedule information report CSI by PUSCH to described base station.

The subscriber equipment that the embodiment of the present invention provides, can under the configuration of base station and scheduling, and use PUSCH, and carry out reporting of CSI according to the frequency domain resource that UL Grant specifies, therefore, the flexible configuration of CSI schedule information can be carried out in base station by UL Grant.Subscriber equipment can send CSI on the preferred channel that base station is its configuration, frequency domain resource can be made to utilize more effective.

CSI can be sent on preferred channel, frequency domain resource can be made to utilize more effective.

Wherein, the described UL Grant that the second receiving element 20 receives specifically can be the DCI of SPS C-RNTI scrambling, and the DCI of described SPS C-RNTI scrambling does not comprise the schedule information of data, and meets one of following two kinds of configurations:

First configuration comprises: the bit value in the new data instruction NDI territory of the DCI of described SPS C-RNTI scrambling is " 0 ", and the bit value in MCS and RV territory is " 11101 " or " 11110 " or " 11111 ";

Second configuration comprises: the bit value in the NDI territory of the DCI of described SPS C-RNTI scrambling is " 0 ", and the bit value of each virtual CRC position is " 1 ".

The described UL Grant that second receiving element 20 receives can also be specially the DCI of C-RNTI scrambling, and the DCI of described C-RNTI scrambling does not comprise the schedule information of data, and meets one of following three kinds of configurations:

3rd configuration comprises: the bit value in MCS and the RV territory of the DCI of described C-RNTI scrambling is " 00000 ", and the number of Physical Resource Block PRB be greater than 1 integer;

4th configuration comprises: the bit value in MCS and the RV territory of the DCI of described C-RNTI scrambling is " 11100 ", and the number of PRB is 1;

5th configuration comprises: the bit value in described MCS and RV territory is " 11110 " or " 11111 ", and the bit value in CQI request territory is " 1 ".

Wherein, report unit 21 specifically for:

The moment is reported arbitrary, if need to report at least two CSI with different report cycle, the schedule information of a kind of UL Grant then only received according to the second receiving element 20 carries out reporting of CSI, described UL Grant for described in UL Grant corresponding to report cycle maximum at least two different report cycles;

The moment is reported arbitrary, if need report at least one CSI with different report cycle and transmit SPS data service, then only carry out the transmission with SPS data service that reports of CSI according to the schedule information of a kind of UL Grant of the second receiving element 20 reception, the UL Grant corresponding to the cycle maximum in the transmission cycle of the report cycle that described UL Grant is described CSI and described SPS data service.

In addition, reporting the moment at arbitrary CSI, reporting unit 21 also further specifically for when monitoring the UL Grant for the C-RNTI scrambling of dynamic dispatching, according to the reporting of scheduling information (SI) CSI of the described UL Grant for dynamic dispatching.

One of ordinary skill in the art will appreciate that: all or part of flow process realizing said method embodiment can have been come by the hardware that computer program instructions is relevant, aforesaid program can be stored in a computer read/write memory medium, this program, when performing, performs the step comprising said method embodiment; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.

The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of described claim.

Claims (12)

1. a transmission method of CSI, is characterized in that, comprising:

Base station is to the transmission of configuration information of subscriber equipment transmitting channel state information CSI, wherein, described transmission of configuration information comprises transmission mode information and reports time information, described transmission mode information is used to indicate subscriber equipment by physical layer Uplink Shared Channel PUSCH periodic report CSI, described in report time information to be used to indicate the moment of subscriber equipment periodic report CSI;

Described base station sends the schedule information of CSI to described subscriber equipment by uplink authorization information UL Grant; The schedule information of described CSI need when being used to indicate described user equipment to report CSI according to relevant scheduling parameter;

Described base station receives the CSI of described subscriber equipment according to described transmission of configuration information and described schedule information periodic report;

Described UL Grant is specially: the Downlink Control Information DCI of semi-continuous scheduling SPS Radio Network Temporary Identifier C-RNTI scrambling;

To be sent the schedule information of CSI to described subscriber equipment by uplink authorization information UL Grant in described base station before, described method also comprises:

Described base station configures the DCI of described SPS C-RNTI scrambling, makes the DCI of the SPS C-RNTI scrambling after described configuration not comprise the schedule information of data, and meets one of following two kinds of configurations:

First configuration comprises: the bit value in the new data instruction NDI territory of the DCI of described SPS C-RNTI scrambling is " 0 ", and the bit value in modulation coding mode MCS and redundancy versions RV territory is " 11101 " or " 11110 " or " 11111 ";

Second configuration comprises: the bit value in the NDI territory of the DCI of described SPS C-RNTI scrambling is " 0 ", and the bit value of each virtual cyclic redundancy check (CRC) position is " 1 ";

Or,

Described UL Grant is specially: the DCI of C-RNTI scrambling;

To be sent the schedule information of CSI to described subscriber equipment by uplink authorization information UL Grant in described base station before, described method also comprises:

Configure the DCI of described C-RNTI scrambling, make the DCI of the C-RNTI scrambling after described configuration not comprise the schedule information of data, and meet one of following three kinds of configurations:

3rd configuration comprises: the bit value in MCS and the RV territory of the DCI of described C-RNTI scrambling is " 00000 ", and the number of Physical Resource Block PRB be greater than 1 integer;

4th configuration comprises: the bit value in MCS and the RV territory of the DCI of described C-RNTI scrambling is " 11100 ", and the number of PRB is 1;

5th configuration comprises: the bit value in described MCS and RV territory is " 11110 " or " 11111 ", and the bit value in CQI request territory is " 1 ".

2. transmission method according to claim 1, is characterized in that, under described method is applied to the scene of multiple downstream units carrier aggregation, described CSI is specially the CSI of downstream units carrier wave, and described multiple downstream units carrier wave is divided at least one group;

Transmission of configuration information from described base station to subscriber equipment transmitting channel state information CSI before, described method also comprises:

Described base station determines that the CSI's of described downstream units carrier wave reports time information, described in report time information to comprise start offset amount in the report cycle of the CSI of described downstream units carrier wave and a described report cycle, to make:

The CSI of the downstream units carrier wave of identical group reports in time information, described report cycle value is identical with described start offset value, the CSI of the downstream units carrier wave of different group reports in time information, described report cycle value is different, described start offset value is identical, and its medium and small report cycle value is the factor of large report cycle value.

3. transmission method according to claim 2, is characterized in that, described base station determines that the time information that reports of the CSI of described downstream units carrier wave comprises:

When there is SPS data service, report cycle according to the transmission cycle of described SPS data service and the CSI of each group of downstream units carrier wave determines that the CSI's of described downstream units carrier wave reports time information, wherein, described report time information to comprise the CSI of described downstream units carrier wave report cycle and a described report cycle in start offset amount, to make:

When the transmission cycle of described SPS data service is identical with the report cycle of the CSI of at least one group of downstream units carrier wave, the CSI of described at least one group of downstream units carrier wave reports in time information, described report cycle is identical with the transmission cycle of described SPS data service, and described start offset amount is identical with the start offset amount of described SPS data service in a transmission cycle;

When the transmission cycle of described SPS data service is greater than the report cycle of the CSI of at least one group of downstream units carrier wave, the CSI of described at least one group of downstream units carrier wave reports in time information, described start offset value is identical with the start offset value of described SPS data service in a transmission cycle, and described report cycle value is the factor of the transmission cycle value of described SPS data service;

When the transmission cycle of described SPS data service is less than the report cycle of the CSI of at least one group of downstream units carrier wave, the CSI of described at least one group of downstream units carrier wave reports in time information, described start offset value is identical with the start offset value of described SPS data service in a transmission cycle, and described report cycle value is the multiple of the transmission cycle value of described SPS data service.

4. transmission method according to claim 1, is characterized in that, described base station is by uplink authorization information UL Grant before the schedule information of described subscriber equipment transmission CSI, and described method also comprises:

Described base station configures different UL Grant to the CSI with different report cycle;

The schedule information that described base station sends CSI by uplink authorization information UL Grant to described subscriber equipment comprises:

There is described in described base station to be sent respectively to described subscriber equipment by the different UL Grant of described configuration the schedule information of the CSI of different report cycle.

5. a transmission method of CSI, is characterized in that, comprising:

Subscriber equipment receives the transmission of configuration information of the CSI that base station sends, wherein, described transmission of configuration information comprises transmission mode information and reports time information, described transmission mode information is used to indicate subscriber equipment by physical layer Uplink Shared Channel PUSCH periodic report CSI, described in report time information to be used to indicate the moment of described subscriber equipment periodic report CSI;

Described subscriber equipment receives the schedule information of the CSI that described base station is sent to described subscriber equipment by UL Grant; The schedule information of described CSI need when being used to indicate described user equipment to report CSI according to relevant scheduling parameter;

Described subscriber equipment according to described transmission of configuration information and described schedule information by PUSCH to described base station periodic report CSI;

Described UL Grant is specially the Downlink Control Information DCI of SPS C-RNTI scrambling, and the DCI of described SPS C-RNTI scrambling does not comprise the schedule information of data, and meets one of following two kinds of configurations:

First configuration comprises: the bit value in the new data instruction NDI territory of the DCI of described SPS C-RNTI scrambling is " 0 ", and the bit value in MCS and RV territory is " 11101 " or " 11110 " or " 11111 ";

Second configuration comprises: the bit value in the NDI territory of the DCI of described SPS C-RNTI scrambling is " 0 ", and the bit value of each virtual CRC position is " 1 ";

Or,

Described UL Grant is specially: the DCI of C-RNTI scrambling, and the DCI of described C-RNTI scrambling does not comprise the schedule information of data, and meets one of following three kinds of configurations:

3rd configuration comprises: the bit value in MCS and the RV territory of the DCI of described C-RNTI scrambling is " 00000 ", and the number of Physical Resource Block PRB be greater than 1 integer;

4th configuration comprises: the bit value in MCS and the RV territory of the DCI of described C-RNTI scrambling is " 11100 ", and the number of PRB is 1;

5th configuration comprises: the bit value in described MCS and RV territory is " 11110 " or " 11111 ", and the bit value in CQI request territory is " 1 ".

6. transmission method according to claim 5, is characterized in that,

Describedly carry out reporting of CSI according to described transmission of configuration information and schedule information and comprise:

The moment is reported arbitrary, if need to report at least two CSI with different report cycle, then only carry out reporting of CSI according to the schedule information of a kind of UL Grant, described UL Grant for described in UL Grant corresponding to report cycle maximum at least two different report cycles;

Or

The moment is reported arbitrary, if need report at least one CSI with different report cycle and transmit SPS data service, then only carry out the transmission with SPS data service that reports of CSI according to the schedule information of a kind of UL Grant, the UL Grant corresponding to the cycle maximum in the transmission cycle of the report cycle that described UL Grant is described CSI and described SPS data service.

7. a base station, is characterized in that, comprising:

Transmitting element, for the transmission of configuration information to subscriber equipment transmitting channel state information CSI, wherein, described transmission of configuration information comprises transmission mode information and reports time information, described transmission mode information is used to indicate subscriber equipment by physical layer Uplink Shared Channel PUSCH periodic report CSI, described in report time information to be used to indicate the moment of subscriber equipment periodic report CSI; Sent the schedule information of CSI to described subscriber equipment by uplink authorization information UL Grant; The schedule information of described CSI need when being used to indicate described user equipment to report CSI according to relevant scheduling parameter;

First receiving element, for receiving the CSI of described transmission of configuration information that described subscriber equipment sends according to described transmitting element and described schedule information periodic report;

Dispensing unit, for configuring described UL Grant for described transmitting element, one of the UL Grant configured is the DCI of SPS C-RNTI scrambling, and the DCI of the described SPS C-RNTI scrambling after configuration does not comprise the schedule information of data, and below meeting in two kinds of configurations:

First configuration comprises: the bit value in the new data instruction NDI territory of the DCI of described SPS C-RNTI scrambling is " 0 ", and the bit value in MCS and RV territory is " 11101 " or " 11110 " or " 11111 ";

Second configuration comprises: the bit value in the NDI territory of the DCI of described SPS C-RNTI scrambling is " 0 ", and the bit value of each virtual CRC position is " 1 ";

Then, described transmitting element sends the schedule information of CSI to described subscriber equipment specifically for the described UL Grant that configured by described dispensing unit;

Or described dispensing unit, for configuring described UL Grant for described transmitting element, the UL Grant configured is the DCI of C-RNTI scrambling, and the DCI of the described SPS C-RNTI scrambling after configuration does not comprise the schedule information of data, and meets one of following three kinds of configurations:

3rd configuration comprises: the bit value in MCS and the RV territory of the DCI of described C-RNTI scrambling is " 00000 ", and the number of Physical Resource Block PRB be greater than 1 integer;

4th configuration comprises: the bit value in MCS and the RV territory of the DCI of described C-RNTI scrambling is " 11100 ", and the number of PRB is 1;

5th configuration comprises: the bit value in described MCS and RV territory is " 11110 " or " 11111 ", and the bit value in CQI request territory is " 1 ";

Then, described transmitting element sends the schedule information of CSI to described subscriber equipment specifically for the described UL Grant that configured by described dispensing unit.

8. base station according to claim 7, is characterized in that,

Described base station applies is under the scene of multiple downstream units carrier aggregation, and described CSI is specially the CSI of downstream units carrier wave, and described multiple downstream units carrier wave is divided at least one group;

Described base station also comprises determining unit, for determining that the CSI's of described downstream units carrier wave reports time information, described in report time information to comprise start offset amount in the report cycle of the CSI of described downstream units carrier wave and a described report cycle, to make:

The CSI of the downstream units carrier wave of identical group reports in time information, described report cycle value is identical with start offset value, the CSI of the downstream units carrier wave of different group reports in time information, described report cycle value is different, described start offset value is identical, and its medium and small report cycle value is the factor of large report cycle value;

Then, described transmitting element is specifically for the transmission of configuration information to subscriber equipment transmitting channel state information CSI, and wherein, what described transmission of configuration information comprised that transmission mode information and described determining unit determine reports time information.

9. base station according to claim 8, it is characterized in that, when there is SPS data service, described determining unit is further used for determining that the CSI's of described downstream units carrier wave reports time information, to make according to the report cycle of the transmission cycle of described SPS data service and the CSI of each group of downstream units carrier wave:

When the transmission cycle of described SPS data service is identical with the report cycle of the CSI of at least one group of downstream units carrier wave, the CSI of described at least one group of downstream units carrier wave reports in time information, described report cycle is identical with the transmission cycle of described SPS data service, and described start offset amount is identical with the start offset amount of described SPS data service in a transmission cycle;

When the transmission cycle of described SPS data service is greater than the report cycle of the CSI of at least one group of downstream units carrier wave, the CSI of described at least one group of downstream units carrier wave reports in time information, described start offset value is identical with the start offset value of described SPS data service in a transmission cycle, and described report cycle value is the factor of the transmission cycle value of described SPS data service; When the transmission cycle of described SPS data service is less than the report cycle of the CSI of at least one group of downstream units carrier wave, the CSI of described at least one group of downstream units carrier wave reports in time information, described start offset value is identical with the start offset value of described SPS data service in a transmission cycle, and described report cycle value is the multiple of the transmission cycle value of described SPS data service.

10. base station according to claim 7, is characterized in that, also comprises dispensing unit, for configuring different UL Grant to the CSI with different report cycle;

Then, described transmitting element to send respectively to described subscriber equipment specifically for the different UL Grant that configured by described dispensing unit described in there is the schedule information of the CSI of different report cycle.

11. 1 kinds of subscriber equipmenies, is characterized in that, comprising:

Second receiving element, for receiving the transmission of configuration information of the CSI that base station sends, wherein, described transmission of configuration information comprises transmission mode information and reports time information, described transmission mode information is used to indicate subscriber equipment by physical layer Uplink Shared Channel PUSCH periodic report CSI, described in report time information to be used to indicate the moment of described subscriber equipment periodic report CSI; Receive the schedule information of the CSI that described base station is sent to described subscriber equipment by UL Grant; The schedule information of described CSI need when being used to indicate described user equipment to report CSI according to relevant scheduling parameter;

Report unit, for according to described second receiving element receive described transmission of configuration information and described schedule information by PUSCH to described base station periodic report CSI;

The described UL Grant that described second receiving element receives is specially the Downlink Control Information DCI of SPS C-RNTI scrambling, and the DCI of described SPS C-RNTI scrambling does not comprise the schedule information of data, and meet in following two kinds of configurations one of at least:

First configuration comprises: the bit value in the new data instruction NDI territory of the DCI of described SPS C-RNTI scrambling is " 0 ", and the bit value in MCS and RV territory is " 11101 " or " 11110 " or " 11111 ";

Second configuration comprises: the bit value of each virtual CRC check position of the DCI of described SPS C-RNTI scrambling is " 1 ";

Or,

The described UL Grant that described second receiving element receives is specially the DCI of C-RNTI scrambling, and the DCI of described C-RNTI scrambling does not comprise the schedule information of data, and meets one of following three kinds of configurations:

3rd configuration comprises: the bit value in MCS and the RV territory of the DCI of described C-RNTI scrambling is " 00000 ", and the number of Physical Resource Block PRB be greater than 1 integer;

4th configuration comprises: the bit value in MCS and the RV territory of the DCI of described C-RNTI scrambling is " 11100 ", and the number of PRB is 1;

5th configuration comprises: the bit value in described MCS and RV territory is " 11110 " or " 11111 ", and the bit value in CQI request territory is " 1 ".

12. subscriber equipmenies according to claim 11, is characterized in that, described in report unit specifically for:

The moment is reported arbitrary, if need to report at least two CSI with different report cycle, the schedule information of a kind of UL Grant then only received according to described second receiving element carries out reporting of CSI, described UL Grant for described in UL Grant corresponding to report cycle maximum at least two different report cycles;

Or

The moment is reported arbitrary, if need report at least one CSI with different report cycle and transmit SPS data service, then only carry out the transmission with SPS data service that reports of CSI according to the schedule information of a kind of UL Grant of described second receiving element reception, the UL Grant corresponding to the cycle maximum in the transmission cycle of the report cycle that described UL Grant is described CSI and described SPS data service.