CN101998327A - Method and equipment for configuring transmission scheme and/or feedback mode - Google Patents
Method and equipment for configuring transmission scheme and/or feedback mode Download PDFInfo
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- CN101998327A CN101998327A CN2009100914331A CN200910091433A CN101998327A CN 101998327 A CN101998327 A CN 101998327A CN 2009100914331 A CN2009100914331 A CN 2009100914331A CN 200910091433 A CN200910091433 A CN 200910091433A CN 101998327 A CN101998327 A CN 101998327A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0027—Scheduling of signalling, e.g. occurrence thereof
Abstract
The invention discloses a method and equipment for configuring a transmission scheme and/or a feedback mode. In the invention messages are sent through a physical control channel (PCCH) so as to carry out configuration of the feedback mode of user equipment. The technical scheme provided by the embodiment of the invention can realize that different coordinated multi-point (CoMP) transmission schemes correspond to different feedback modes so as to save more feedback resources; and compared with the original radio resource control (RRC) signaling notice, the method for setting switches at the PCCH can ensure quicker switching between the transmission scheme and the feedback mode can be realized.
Description
Technical field
The present invention relates to communication technical field, the collocation method and the equipment of particularly a kind of transmission plan and/or feedback model.
Background technology
(the International Telecommunications Union of International Telecommunications Union, ITU) be that (International MobileTelecommunication Advanced, performance IMT-A) has proposed very harsh requirement to next generation mobile communication system-senior international mobile communication system.Such as, the maximum system transmission bandwidth reaches 100MHz, and the peak rate of up-downgoing transfer of data need reach 1Gbps and 500M bps, and system's average spectral efficiency (ase) especially edge spectrum efficiency has been proposed very high demand.
In order to satisfy the new demand of IMT-A, 3GPP has proposed employing cooperative multipoint transmission technology in its mobile cellular communication LTE-A of system of future generation (Coordinated Multi-PointTransmission/Reception CoMP) improves the performance of system.The cooperative multipoint transmission technology improves user's received signal quality by the combined dispatching or the collaborative transmission of a plurality of sub-districts of separating on the geographical position, reduces the interference of minizone, thereby effectively improves power system capacity and edge customer spectrum efficiency.In general, a plurality of transmission points are base stations of different districts.The collaborative transmission that the cooperative multipoint transmission technical point is descending and up unite reception.
Descending multi-point cooperative transmission technical scheme mainly is divided into two classes: combined dispatching and unite transmission.Combined dispatching is the coordination by the time between the sub-district, frequency and space resources, for the resource that different UE distributes mutually orthogonal, avoids interference each other.The interference of minizone is the principal element of restriction cell edge UE performance, so combined dispatching can reduce the interference of minizone, thereby improves the performance of cell edge UE.As shown in Figure 1, be the schematic diagram of multi-plot joint dispatching of the prior art, by the combined dispatching of three sub-districts, three UE that may the phase mutual interference have dispatched on the mutually orthogonal resource, have effectively avoided the interference between the sub-district.
Have only a sub-district different with the combined dispatching scheme, have a plurality of sub-districts to send data to UE simultaneously in the associating delivery plan, to strengthen the UE received signal to UE transmission data.As shown in Figure 2, be the schematic diagram that multi-plot joint of the prior art sends, three sub-districts send data to a UE on identical resource, and UE receives the signal of a plurality of sub-districts simultaneously.On the one hand, stack can promote the signal quality that UE receives from the useful signal of a plurality of sub-districts, on the other hand, also can reduce the interference that UE is subjected to by uniting transmission, thereby improves systematic function.
Up unite to receive be meant that a plurality of sub-districts receive the data that a UE sends simultaneously, the data that each sub-district receives are carried out Combined Treatment to improve the demodulation quality of UE data.Up schematic diagram of uniting reception of the prior art as shown in Figure 3.
In descending CoMP, in order to cooperate eNB reasonably to dispatch and to transmit, UE need measure the channel quality of each sub-district and feed back.
In the prior art, the feedback kind that defines among the CoMP comprises following three kinds:
Explicit feedback: explicit channel status/statistical message feedback, the message of feedback is not carried out any processing;
Implicit feedback: implicit information channel state/statistical message feedback, feed back treated information, as CQI/PMI/RI;
The SRS mode: utilize channel reciprocity, the SRS that UE sends can be used for eNB and carries out the CSI estimation.
Feedback model/type is that (Radio ResourceControl RRC) notifies by the mode of explicit or implicit expression in the signaling, is a semi-static process at radio resource control in the prior LTE system.For the different transmission mode of different transmission plan definition, promptly feedback content is different with expense, can be so that corresponding expense reduce, and cooperate transmission plan to reach better transmission property.
In realizing process of the present invention, the applicant finds that there is following problem at least in prior art:
When cooperative scheduling/wave beam forming scheme and the switching of joint transmission scheme, corresponding feedback model should also switch accordingly.If two kinds of schemes are defined as two kinds of transmission modes, and according to existing LTE system regulation, notify switch mode by the RRC signaling, the same with feedback model so all is semi-static switching.But, if considering two kinds of schemes is present in a kind of transmission mode, can support dynamic to switch fast according to the judgement of network side, feedback model is this will support the switching of scheme with the switch mode of RRC signaling, and this also makes the switching of scheme lose practical meaning.
Summary of the invention
The embodiment of the invention provides the collocation method and the equipment of a kind of transmission plan and/or feedback model, and the feedback model that CoMP transmission plan that can be different is corresponding different can better be saved feedback resources.
For achieving the above object, the embodiment of the invention provides the collocation method of a kind of transmission plan and/or feedback model on the one hand, specifically may further comprise the steps:
The base station sends the message that comprises transmission plan and/or feedback model information by physical downlink control channel PDCCH to subscriber equipment;
Described base station receives the feedback content that described subscriber equipment feeds back according to described transmission plan and/or the pairing mode of feedback model information.
Preferably, described base station, also comprised before the subscriber equipment transmission comprises the message of transmission plan and/or feedback model information by PDCCH:
Described base station is by different feedback model aperiodic of RRC signaling configuration; And/or,
Described base station is by the different periodic feedback pattern of RRC signaling configuration, comprising pairing resource index, configuration index and the format information of reporting of described periodic feedback pattern.
Preferably, described method specifically comprises:
Described base station disposes a plurality of different aperiodic of feedback model or periodic feedback pattern respectively by many groups RRC signaling; Or,
The different parameters of described base station by one group of RRC signaling disposes a plurality of different aperiodic of feedback model or periodic feedback pattern.
Preferably, the configuration mode of described transmission plan and/or feedback model information comprises:
Explicit configuration mode; Or,
The implicit expression configuration mode; Or,
The mixed configuration mode of explicit and implicit expression.
Preferably, described explicit configuration mode comprises:
Different transmission plan and/or feedback model are being indicated with different switch bit by PDCCH in described base station in the message that subscriber equipment sent; Or,
Different transmission plan and/or feedback model are being indicated with different bits by PDCCH in described base station in the message that subscriber equipment sent.
Preferably, described implicit expression configuration mode comprises:
Different transmission plan and/or feedback model are being indicated with different parameter value scopes by PDCCH in described base station in the message that subscriber equipment sent; Or,
Different transmission plan and/or feedback model are being indicated with different RNTI by PDCCH in described base station in the message that subscriber equipment sent.
Preferably, the mixed configuration mode of described explicit and implicit expression comprises:
Different transmission plan indicated with different switch bit or bit by PDCCH in described base station in the message that subscriber equipment sent, and with different parameter value scopes or the different feedback model of RNTI indication.
Preferably, when described different parameter value scope comprises described subscriber equipment by the Uplink Shared Channel control channel, the size of the Resource Block that is transmitted in the described Uplink Shared Channel or MCS grade, described base station is by the size or the different feedback content or the feedback kind of MCS grade distinguishing of described Resource Block.
Preferably, described base station receives after the feedback content that described subscriber equipment feeds back according to described transmission plan and/or the pairing mode of feedback model information, also comprises:
Described base station judges whether that according to described feedback content needs switch the transmission plan and/or the feedback model of described subscriber equipment;
Need to switch if described base station is judged, then after the corresponding feedback content that obtains described subscriber equipment transmission, carry out the switching of transmission plan.
Preferably, the switching of transmission plan is carried out in described base station after the corresponding feedback content that obtains described subscriber equipment transmission, specifically comprise:
Described base station directly switches to new transmission plan with current transmission plan; Or,
Described base station judges whether current transmission plan is switched to new transmission plan according to the feedback content in the default time range.
Preferably, described base station judges whether current transmission plan is switched to new transmission plan according to the feedback content in the default time range, comprising:
Described base station is provided with two feedback cycles, satisfies existing transmission plan with the less feedback cycle of expense, satisfies new transmission plan with the bigger feedback cycle of expense.
Preferably, described method also comprises:
The feedback of the bigger feedback cycle of described expense is indicated by the RRC signaling in described base station, makes described subscriber equipment when arriving the time point of the bigger feedback cycle of described expense, feeds back according to described RRC signaling configuration;
Wherein, the configuration for the feedback of the bigger feedback cycle of described expense in the described RRC signaling is disposed by switch bit, or default configuration.
On the other hand, the embodiment of the invention also provides a kind of base station, comprising:
Generation module is used to generate transmission plan and/or feedback model information;
Sending module is used for sending to subscriber equipment by PDCCH and comprises the transmission plan that described generation module generates and/or the message of feedback model information;
Receiver module is used to receive the feedback content that described subscriber equipment feeds back according to described transmission plan and/or the pairing mode of feedback model information.
Preferably, described sending module also is used for sending different feedback model aperiodic of RRC signaling configuration to described subscriber equipment; Or to the different periodic feedback pattern of described subscriber equipment transmission RRC signaling configuration, comprising pairing resource index, configuration index and the format information of reporting of described periodic feedback pattern.
Preferably, described sending module disposes a plurality of different aperiodic of feedback model or periodic feedback pattern respectively by many groups RRC signaling; Or,
The different parameters of described sending module by one group of RRC signaling disposes a plurality of different aperiodic of feedback model or periodic feedback pattern.
Preferably, described base station also comprises:
Judge module, the feedback content that is used for receiving according to described receiver module judge whether that needs switch the transmission plan and/or the feedback model of described subscriber equipment;
Handover module when described judge module judgement needs to switch, is used for carrying out the switching of transmission plan after described receiver module receives the corresponding feedback content of described subscriber equipment transmission.
Preferably, described handover module is used for carrying out the switching of transmission plan after described receiver module receives the corresponding feedback content of described subscriber equipment transmission, specifically comprise:
Described handover module directly switches to new transmission plan with current transmission plan; Or,
Described judge module judges whether current transmission plan is switched to new transmission plan according to the feedback content that described receiver module received in the default time range, and in judged result when being, by described handover module current transmission plan is switched to new transmission plan.
On the other hand, the embodiment of the invention also provides the collocation method of a kind of transmission plan and/or feedback model, specifically may further comprise the steps:
Subscriber equipment receives the message that comprises transmission plan and/or feedback model information that the base station sends by PDCCH;
Described subscriber equipment according to described transmission plan and/or the pairing mode of feedback model information to the corresponding feedback content of described base station feedback.
Preferably, described subscriber equipment receives before the message that comprises transmission plan and/or feedback model information of base station transmission by PDCCH, also comprises:
Described subscriber equipment receives described base station by different feedback model aperiodic of RRC signaling configuration; And/or,
Described subscriber equipment receives described base station by the different periodic feedback pattern of RRC signaling configuration, comprising pairing resource index, configuration index and the format information of reporting of described periodic feedback pattern.
Preferably, the configuration mode of described transmission plan and/or feedback model information comprises:
Explicit configuration mode; Or,
The implicit expression configuration mode; Or,
The mixed configuration mode of explicit and implicit expression.
On the other hand, the embodiment of the invention also provides a kind of user terminal, comprising:
Receiver module is used for receiving the message that comprises transmission plan and/or feedback model information that the base station sends by PDCCH;
Identification module is used for the message that receives according to described receiver module, discerns corresponding transmission plan and/or feedback model;
Feedback module is used for the transmission plan discerned according to described identification module and/or the feedback model corresponding feedback content to described base station feedback.
Preferably, described receiver module also is used to receive described base station by different feedback model aperiodic of RRC signaling configuration; And/or, receive described base station by the different periodic feedback pattern of RRC signaling configuration, comprising pairing resource index, configuration index and the format information of reporting of described periodic feedback pattern.
Compared with prior art, the present invention has the following advantages:
By using technical scheme of the present invention, can realize the feedback model that different CoMP transmission plans is corresponding different, feedback resources can better be saved, and transmission plan and feedback model can be switched faster with respect to original RRC signaling with the method that switch is set of physical layer control channel.
Description of drawings
Fig. 1 is the schematic diagram of multi-plot joint dispatching of the prior art;
Fig. 2 is the schematic diagram that multi-plot joint of the prior art sends;
Fig. 3 unites the schematic diagram of reception for many cell uplinks of the prior art;
The schematic flow sheet of a kind of transmission plan that Fig. 4 proposes for the embodiment of the invention and/or the collocation method of feedback model;
The schematic flow sheet of the another kind of transmission plan that Fig. 5 proposes for the embodiment of the invention and/or the collocation method of feedback model;
The schematic flow sheet of the another kind of transmission plan that Fig. 6 proposes for the embodiment of the invention and/or the collocation method of feedback model;
The schematic flow sheet of the another kind of transmission plan that Fig. 7 embodiment of the invention proposes and/or the collocation method of feedback model;
The schematic flow sheet of the another kind of transmission plan that Fig. 8 embodiment of the invention proposes and/or the collocation method of feedback model;
The schematic flow sheet of the another kind of transmission plan that Fig. 9 embodiment of the invention proposes and/or the collocation method of feedback model;
The schematic flow sheet of the another kind of transmission plan that Figure 10 embodiment of the invention proposes and/or the collocation method of feedback model;
The schematic flow sheet of the another kind of transmission plan that Figure 11 embodiment of the invention proposes and/or the collocation method of feedback model;
The schematic flow sheet of the another kind of transmission plan that Figure 12 embodiment of the invention proposes and/or the collocation method of feedback model;
Figure 13 is the structural representation of a kind of base station that the embodiment of the invention proposed;
Figure 14 is the structural representation of a kind of subscriber equipment that the embodiment of the invention proposed.
Embodiment
As stated in the Background Art, prior art can't be switched transmission plan and corresponding feedback kind fast with RRC signaling transmission plan and feedback model.
The main settling mode that technical scheme of the present invention adopted is to show or the notification transmission scheme or the feedback kind of implicit expression with physical control channel.
The main technical point of the embodiment of the invention is the corresponding different feedback model of downlink transfer scheme different among the CoMP, and included feedback content and/or the expense difference of getting in the feedback model;
On the one hand, in CoMP, can dynamically switch fast between the different downlink transfer schemes;
Wherein, eNB selects whether use the transmission plan of CoMP, and is which kind of transmission plan, and switches in the following manner:
Mode one, direct-cut operation transmission plan: when existing transmission plan does not satisfy performance requirement, direct handover scheme.
Mode two, make a strategic decision whether switch transmission plan according to the feedback content of a period of time: this mode can be for being provided with two feedback cycles, short periodic feedback (expense is less) satisfies the needs of existing transmission plan, and long periodic feedback (expense is bigger) satisfies the needs of all transmission plans.
On the other hand, in CoMP, the different feedback model of different downlink transfer scheme correspondences also can switch accordingly fast.
In the technical scheme that the embodiment of the invention proposed, eNB is provided with the different feedback model of UE by the RRC signaling, and corresponding configuration parameters such as cycle, in the assignment procedure of various feedback pattern, the parameter that can increase in one group of RRC signaling is provided with, and also can be provided with by increasing many group RRC signalings.
In the technical scheme that the embodiment of the invention proposed, the quick switching of feedback model is finished by the control signaling in the control channel (as switch etc. is set).
As shown in Figure 4, be the schematic flow sheet of the collocation method of a kind of transmission plan that the embodiment of the invention proposed and/or feedback model, this method specifically may further comprise the steps:
Step S401, base station send the message that comprises transmission plan and/or feedback model information by physical downlink control channel PDCCH to subscriber equipment.
Concrete, before this step, also comprise following layoutprocedure:
The base station is by different feedback model aperiodic of RRC signaling configuration; Or,
The base station is by the different periodic feedback pattern of RRC signaling configuration, comprising pairing resource index, configuration index and the format information of reporting of periodic feedback pattern.
In such cases, if there is the various feedback pattern, then the base station disposes a plurality of different aperiodic of feedback model or periodic feedback pattern respectively by many groups RRC signaling, or the different parameters by one group of RRC signaling disposes a plurality of different aperiodic of feedback model or periodic feedback pattern.
Wherein, the control signaling of physical channel is indicated the configuration of finishing transmission plan and/or feedback model information by the explicit indication and/or the implicit expression that change existing DCI format 0, specifies as follows:
(1) explicit configuration mode comprises:
Different transmission plan and/or feedback model are being indicated with different switch bit by PDCCH in the base station in the message that subscriber equipment sent; Or,
Different transmission plan and/or feedback model are being indicated with different bits by PDCCH in the base station in the message that subscriber equipment sent.
The different CoMP transmission plan of switch bit or bit indication promptly is set in DCI format 0.
Consider to reduce the expansion of bit as far as possible, can represent CBF and two kinds of transmission plans of JP with the expense of 1bit, the transmission plan of perhaps representing refinement with the 2bits expense in the application scenarios of reality, is not got rid of the method that the switch bit that other are arranged is represented the CoMP transmission plan.
In concrete enforcement scene, the mode of feeding back different contents is that feedback kind is constant, but makes UE learn the content that the needs respective feedback is different according to the indicated transmission plan of switch bit.
For some feedback kind, need RRC to increase signaling sub-district number; Feedback kind is expanded corresponding to transmission plan, promptly increases new feedback kind; Corresponding one or more feedback kind of transmission plan for the control of latter's switch bit.
Wherein, feedback can be the cycle, also can be aperiodic.
Periodic feedback is meant under the PUCCH situation, can expand type of feedback, perhaps only distinguish the feedback of different districts by configuration cycle and offset, or under the PUSCH situation, can expand type of feedback, perhaps distinguish the feedback of different districts, perhaps reuse existing feedback kind, or reuse existing feedback kind by configuration cycle and offset by switch bit as above by configuration cycle and offset.
Under the situation of feedback model expansion, switch bit also can directly be indicated different feedback models
At this moment the feedback model of switch bit correspondence can with the feedback model sequence consensus of RRC signaling.
CQI request bit is expanded (being 1bit now), be used for different schemes or the different feedback model of indication cycle and aperiodic or CoMP.
(2) implicit expression configuration mode comprises:
Different transmission plan and/or feedback model are being indicated with different parameter value scopes by PDCCH in the base station in the message that subscriber equipment sent; Or,
Different transmission plan and/or feedback model are being indicated with different RNTI by PDCCH in the base station in the message that subscriber equipment sent.
(3) the mixed configuration mode of explicit and implicit expression comprises:
Different transmission plan indicated with different switch bit or bit by PDCCH in the base station in the message that subscriber equipment sent, and with different parameter value scopes or the different feedback model of RNTI indication.
Wherein, in the mixed configuration mode of implicit expression configuration mode or explicit and implicit expression, different parameter value scopes comprises when subscriber equipment passes through the Uplink Shared Channel control channel, the size of the Resource Block that is transmitted in the Uplink Shared Channel or MCS grade, the base station is by the size or the different feedback content or the feedback kind of MCS grade distinguishing of Resource Block.
Step S402, base station receive the feedback content that subscriber equipment feeds back according to transmission plan and/or the pairing mode of feedback model information.
After this step is finished, can also further comprise following switching flow:
Step S403, base station judge whether that according to feedback content needs switch the transmission plan and/or the feedback model of subscriber equipment.
If judging, the base station needs to switch, then execution in step S404;
Do not need to switch if the base station is judged, then keep existing transmission plan and/or feedback model.
The switching of transmission plan is carried out in step S404, base station after the corresponding feedback content that obtains the subscriber equipment transmission.
This step specifically comprises following two kinds of situations:
Situation one, base station directly switch to new transmission plan with current transmission plan.
Situation two, base station judge whether current transmission plan is switched to new transmission plan according to the feedback content in the default time range.
Concrete, in this kind situation, the base station can be provided with two feedback cycles, satisfies existing transmission plan with the less feedback cycle of expense, satisfies new transmission plan with the bigger feedback cycle of expense.
Further, the base station can also make subscriber equipment when arriving the time point of the bigger feedback cycle of expense by the feedback of the bigger feedback cycle of RRC signaling indication expense, feeds back according to the RRC signaling configuration;
Wherein, the configuration for the feedback of the bigger feedback cycle of expense in the RRC signaling is disposed by switch bit, or default configuration.
Compared with prior art, the present invention has the following advantages:
By using technical scheme of the present invention, can realize the feedback model that different CoMP transmission plans is corresponding different, feedback resources can better be saved, and transmission plan and feedback model can be switched faster with respect to original RRC signaling with the method that switch is set of physical layer control channel.
Below, the enforcement scene in conjunction with concrete is elaborated to the technology side that the embodiment of the invention proposed.
As shown in Figure 5, the embodiment of the invention has proposed the collocation method of a kind of transmission plan and/or feedback model, and by using this method, UE carries out aperiodic CQI and reports on PUSCH, specifically may further comprise the steps:
Step S501, eNB adopt aperiodic CQI feedback model by RRC signaling UE.
Wherein, the setting of corresponding various concrete feedback models is identical with existing R8 standard, and the form of RRC signaling constitutes does not make change in the present embodiment yet, specifically as shown in table 1.
The corresponding relation of various feedback models in the aperiodic CQI feedback model of table 1
Step S502, eNB select whether to use the transmission plan of CoMP, if use the transmission plan of CoMP, eNB determines further which kind of transmission plan UE adopts.
Step S503, eNB send the setting of transmission plan and feedback model to UE by downlink physical control channel (PDCCH).
Owing in step S501, adopt aperiodic CQI feedback model, further in PDCCH, send feedback channel and transmission plan that DCI format 0 indication UE is adopted in this step in aperiodic CQI feedback model by RRC signaling UE.
In the present embodiment, the CQI request=1 among the DCI format 0 that eNB sends on PDCCH, expression UE feeds back by PUSCH.
On the other hand, eNB with the pairing transmission plan of switch bit indication feedback model, in order to reduce the expansion of bit as far as possible, can adopt the form shown in the following table 2 to represent transmission plan in DCI format 0:
The corresponding relation of table 2 switch bit and transmission plan
| Switch bit | Transmission plan |
| 0 | Cooperative scheduling/wave beam forming |
| 1 | Joint transmission |
In such cases, taking of bit is 1bit, but can only represent two kinds of transmission plans in such cases, if there is more transmission plan in the system, then be limited by the restriction of bit and can not represent, therefore, can further represent the transmission plan of refinement more by the extended bit position, specifically as shown in table 3:
The switch bit of table 3 refinement and the corresponding relation of transmission plan
| Switch bit | Transmission plan |
| 00 | Cooperative scheduling/wave beam forming |
| 01 | Incoherent joint transmission, dynamic cell are selected |
| 10 | Relevant joint transmission |
| 11 | reserved |
It is to be noted; above-mentioned switch bit method to set up and corresponding transmission plan only are a kind of examples that the embodiment of the invention provides for convenience of description; in concrete application scenarios; do not get rid of the switch bit that other are arranged and represent the method for CoMP transmission plan, this belongs to protection scope of the present invention equally.
Step S504, UE feed back the feedback content that satisfies transmission plan by the switch bit that DCI format 0 is provided with in PUSCH.
For example, the switch bit that is provided with among the DCI format 0 is 10, and UE adopts the scheme of relevant joint transmission, and is therefore as shown in table 1, can corresponding feedback model be mode 3-1, mode 2-2 or mode 1-2.Different with existing LTE system is, for mode 3-1, PMI is the PMI that a plurality of community associated processing obtain, and CQI also can be understood as the single CQI of Serving cell, the perhaps CQI of the PMI of corresponding a plurality of community associated processing.
In addition, for the scheme of relevant joint transmission, also can feed back a plurality of PMI and additional PMI corresponding phase calibration of corresponding a plurality of sub-districts in the corresponding feedback model, this equally also belongs to the feedback content scope of mode 1-2 and mode 2-2.Wherein, the sub-district number needs high-rise configuration, can increase parameter c in the RRC signaling and represent parameter c under single cell conditions=1.
Concrete RRC signaling example is as follows:
CQI-ReportConfig::＝ SEQUENCE{
cqi-ReportModeAperiodic ENUMERATED{
rm12，rm20，rm22，rm30，rm31，
rmA，rmB，sparel}OPTIONAL， --Need?OR
c INTEGER(1..9)
nomPDSCH-RS-EPRE-Offset INTEGER(-1..6)，
cqi-ReportPeriodic CQI-ReportPeriodic OPTIONAL --Need?ON
}
Step S505, eNB receive the feedback content when former transmission plan that UE fed back.
When the feedback content of eNB reference when former transmission plan, thinking needs to switch transmission plan, will require the feedback content of the new transmission plan of UE feedback, and switch to new transmission plan after receiving corresponding feedback content.
Compared with prior art, the present invention has the following advantages:
By using technical scheme of the present invention, can realize the feedback model that different CoMP transmission plans is corresponding different, feedback resources can better be saved, and transmission plan and feedback model can be switched faster with respect to original RRC signaling with the method that switch is set of physical layer control channel.
As shown in Figure 6, the embodiment of the invention has proposed the collocation method of another kind of transmission plan and/or feedback model, and by using this method, UE carries out aperiodic CQI and reports on PUSCH, specifically may further comprise the steps:
Step S601, eNB adopt the aperiodic CQI feedback model that comprises new feedback kind by RRC signaling UE.
Different with previous embodiment is, in this step feedback kind is expanded: the various feedback kind in the aperiodic CQI feedback model in original R8 standard, also further add at the feedback model rmA of cooperative scheduling/wave beam forming and the feedback model rmB of joint transmission.
In concrete application scenarios, can perhaps notify respectively with two of RRC signalings or above feedback model with many RRC signalings, the variation of RRC signaling quantity does not influence protection scope of the present invention.
Such as:
CQI-ReportConfig::＝ SEQUENCE{
cqi-ReportModeAperiodicl ENUMERATED{
rm12，rm20，rm22，rm30，rm31，
rmA，rmB，sparel}OPTIONAL，--Need?OR
cqi-ReportModeAperiodic2 ENU?MERATED{
rm12，rm20，rm22，rm30，rm31，
rmA，rmB，sparel}OPTIONAL，--Need?OR
nomPDSCH-RS-EPRE-Offset INTEGER(-1..6)，
cqi-ReportPeriodic CQI-ReportPeriodic OPTIONAL --Need?ON
}
Wherein, cqi-ReportModeAperiodic1 represents aforesaid feedback model rmA at cooperative scheduling/wave beam forming, and cqi-ReportModeAperiodic2 represents aforesaid feedback model rmB at joint transmission.
Step S602, eNB select whether to use the transmission plan of CoMP, if use the transmission plan of CoMP, eNB determines further which kind of transmission plan UE adopts.
Step S603, eNB send the setting of transmission plan and feedback model to UE by PDCCH.
Similar with previous embodiment, owing in step S601, adopt aperiodic CQI feedback model, further in PDCCH, send feedback channel and transmission plan that DCI format 0 indication UE is adopted in this step in aperiodic CQI feedback model by RRC signaling UE.
In the present embodiment, the CQI request=1 among the DCI format 0 that eNB sends on PDCCH, expression UE feeds back by PUSCH.
On the other hand, eNB indicates the pairing transmission plan of feedback model with switch bit in DCI format 0, in order to reduce the expansion of bit as far as possible, can adopt the form of the refinement more shown in form shown in the above-mentioned table 2 and the table 3 to represent transmission plan equally.
Wherein, two parameters that each switch bit is corresponding above-mentioned respectively, for example: with respect to adopting the represented transmission plan of form shown in the above-mentioned table 2, switch bit 0 corresponding cqi-ReportModeAperiodic1, switch bit 1 corresponding cqi-ReportModeAperiodic2.
In concrete application scenarios, if two RRC signalings, then can determine the correspondence of transmission plan and feedback kind by the time sequencing that the RRC signaling sends.
It is to be noted; above-mentioned switch bit method to set up and corresponding transmission plan only are a kind of examples that the embodiment of the invention provides for convenience of description; in concrete application scenarios; do not get rid of the switch bit that other are arranged and represent the method for CoMP transmission plan, this belongs to protection scope of the present invention equally.
Step S604, UE feed back the feedback content that satisfies transmission plan by the switch bit that DCI format 0 is provided with in PUSCH.
If the follow-up situation that exists transmission plan to switch then with reference to previous embodiment, repeats no more in the present embodiment.
Compared with prior art, the present invention has the following advantages:
By using technical scheme of the present invention, can realize the feedback model that different CoMP transmission plans is corresponding different, feedback resources can better be saved, and transmission plan and feedback model can be switched faster with respect to original RRC signaling with the method that switch is set of physical layer control channel.
As shown in Figure 7, the embodiment of the invention has proposed the collocation method of another kind of transmission plan and/or feedback model, and by using this method, UE reports at the CQI of the enterprising line period of PUCCH, specifically may further comprise the steps:
Step S701, eNB report configuration informations such as pairing resource index, configuration index and CQI form by the CQI that RRC signaling UE carries out the cycle.
Step S702, eNB select whether to use the transmission plan of CoMP, if use the transmission plan of CoMP, eNB determines further which kind of transmission plan UE adopts.
Step S703, eNB send the setting of transmission plan and feedback model to UE by PDCCH.
Similar with previous embodiment, owing in step S701, adopt the CQI feedback model in cycle, further in PDCCH, send feedback channel and transmission plan that DCI format 0 indication UE is adopted in this step in the CQI in cycle feedback model by RRC signaling UE.
In the present embodiment, the CQI request among the DCI format 0 that eNB sends on PDCCH is not set to 1, represents that promptly UE does not feed back by PUSCH, but feeds back by PUCCH.
On the other hand, eNB indicates the pairing transmission plan of feedback model with switch bit in DCI format 0, in order to reduce the expansion of bit as far as possible, can adopt the form of the refinement more shown in form shown in the above-mentioned table 2 and the table 3 to represent transmission plan equally.
It is to be noted; above-mentioned switch bit method to set up and corresponding transmission plan only are a kind of examples that the embodiment of the invention provides for convenience of description; in concrete application scenarios; do not get rid of the switch bit that other are arranged and represent the method for CoMP transmission plan, this belongs to protection scope of the present invention equally.
Step S704, UE feed back the feedback content that satisfies transmission plan by the switch bit that DCI format 0 is provided with in PUCCH.
Step S705, eNB receive the feedback content when former transmission plan that UE fed back.
Step S706, when eNB with reference to when the feedback content of former transmission plan, thinking needs to switch transmission plan, will require the feedback content of the new transmission plan of UE feedback, and switch to new transmission plan after receiving corresponding feedback content.
Concrete, transmission plan is switched in decision can be according to following dual mode:
Mode one, direct-cut operation transmission plan: when existing transmission plan does not satisfy performance requirement, be directly switch to new transmission plan.
In this way, can set in advance first-selected switching transmission plan.
Mode two, make a strategic decision whether switch transmission plan according to the feedback content of a period of time.
In this way, can set in advance a long and short two feedback cycle according to overhead size, wherein, short period feedback (expense is less) satisfies the needs of existing transmission plan, and long period feedback (expense is bigger) satisfies the needs of all transmission plans.
For the second way, can increase a RRC signaling separately and indicate macrocyclic feedback, no matter switch to which kind of short period feedback, when arriving the time point of long period feedback, UE carries out the long period feedback according to this RRC signaling configuration.Wherein, the configuration information in this RRC signaling can be indicated with switch bit, also can be used as default configuration.
Compared with prior art, the present invention has the following advantages:
By using technical scheme of the present invention, can realize the feedback model that different CoMP transmission plans is corresponding different, feedback resources can better be saved, and transmission plan and feedback model can be switched faster with respect to original RRC signaling with the method that switch is set of physical layer control channel.
As shown in Figure 8, the embodiment of the invention has proposed the collocation method of another kind of transmission plan and/or feedback model, and by using this method, UE reports at the CQI of the enterprising line period of PUCCH, specifically may further comprise the steps:
Step S801, eNB carry out the CQI in cycle by many RRC notice UE and report the pairing different feedback models of configuration information such as pairing resource index, configuration index and CQI form.
CQI-ReportPeriodicl::＝ CHOICE{
release NULL，
setup SEQUENCE{
cqi-PUCCH-ResourceIndex INTEGER(0..1185)，
cqi-pmi-ConfigIndex INTEGER(0..1023)，
cqi-FormatIndicatorPeriodic CHOICE{
widebandCQI NULL，
subbandCQI SEQUENCE{
k INTEGER(1..4)
}
}，
ri-ConfigIndex INTEGER(0..1023) OPTIONAL，--Need?OR
simultaneousAckNackAndCQI BOOLEAN
}
}
CQI-ReportPeriodic2::＝ CHOICE{
release NULL，
setup SEQUENCE{
cqi-PUCCH-ResourceIndex INTEGER(0..1185)，
cqi-pmi-ConfigIndex INTEGER(0..1023)，
cqi-FormatIndicatorPeriodic?CHOICE{
widebandCQI NULL，
subbandCQI SEQUENCE{
k INTEGER(1..4)
}
}，
ri-ConfigIndex INTEGER(0..1023) OPTIONAL， --Need?OR
simultaneousAckNackAndCQI?BOOLEAN
}
}
Wherein, the corresponding feedback model A of cqi-ReportPeriodic1, the corresponding feedback model B of cqi-ReportPeiodic2.
Step S802, eNB select whether to use the transmission plan of CoMP, if use the transmission plan of CoMP, eNB determines further which kind of transmission plan UE adopts.
Step S803, eNB send the setting of transmission plan and feedback model to UE by PDCCH.
Similar with previous embodiment, owing in step S801, adopt the CQI feedback model in cycle, further in PDCCH, send feedback channel and transmission plan that DCI format 0 indication UE is adopted in this step in the CQI in cycle feedback model by RRC signaling UE.
In the present embodiment, the CQI request among the DCI format 0 that eNB sends on PDCCH is not set to 1, represents that promptly UE does not feed back by PUSCH, but feeds back by PUCCH.
On the other hand, eNB indicates the pairing transmission plan of feedback model with switch bit in DCI format 0, in order to reduce the expansion of bit as far as possible, can adopt the form of the refinement more shown in form shown in the above-mentioned table 2 and the table 3 to represent transmission plan equally.
For the represented transmission plan of situation as shown in table 2, two respectively corresponding two RRC signalings of switch bit, for example: with respect to adopting the represented transmission plan of form shown in the above-mentioned table 2, switch bit 0 corresponding cqi-ReportPeriodic1, switch bit 1 corresponding cqi-ReportPeiodic2, owing to there are two RRC signalings, determine the correspondence of transmission plan and feedback kind in proper order by the transmitting time of RRC signaling.
It is to be noted; above-mentioned switch bit method to set up and corresponding transmission plan only are a kind of examples that the embodiment of the invention provides for convenience of description; in concrete application scenarios; do not get rid of the switch bit that other are arranged and represent the method for CoMP transmission plan, this belongs to protection scope of the present invention equally.
Step S804, UE feed back the feedback content that satisfies transmission plan by the switch bit that DCI format 0 is provided with in PUCCH.
Step S805, eNB receive the feedback content when former transmission plan that UE fed back.
Step S806, when eNB with reference to when the feedback content of former transmission plan, thinking needs to switch transmission plan, will require the feedback content of the new transmission plan of UE feedback, and switch to new transmission plan after receiving corresponding feedback content.
Concrete, transmission plan is switched in decision can be according to following dual mode:
Mode one, direct-cut operation transmission plan: when existing transmission plan does not satisfy performance requirement, be directly switch to new transmission plan.
In this way, can set in advance first-selected switching transmission plan.
Mode two, make a strategic decision whether switch transmission plan according to the feedback content of a period of time.
In this way, can set in advance a long and short two feedback cycle according to overhead size, wherein, short period feedback (expense is less) satisfies the needs of existing transmission plan, and long period feedback (expense is bigger) satisfies the needs of all transmission plans.
For the second way, can increase a RRC signaling separately and indicate macrocyclic feedback, no matter switch to which kind of short period feedback, when arriving the time point of long period feedback, UE carries out the long period feedback according to this RRC signaling configuration.Wherein, the configuration information in this RRC signaling can be indicated with switch bit, also can be used as default configuration.
Compared with prior art, the present invention has the following advantages:
By using technical scheme of the present invention, can realize the feedback model that different CoMP transmission plans is corresponding different, feedback resources can better be saved, and transmission plan and feedback model can be switched faster with respect to original RRC signaling with the method that switch is set of physical layer control channel.
Further again, as Fig. 9 and shown in Figure 10, the embodiment of the invention has proposed the collocation method of another kind of transmission plan and/or feedback model, and by using this method, UE reports at the CQI of the enterprising line period of PUCCH.
In the present embodiment, step S901 to S902, step S904 to S905 are identical with aforesaid embodiment shown in Figure 7, step S1001 to S1002, step S1004 to S1005 are identical with aforesaid embodiment shown in Figure 8, only S903 and step S1003 are distinct in steps, promptly in step S903 and step S1003, CQI request=1 among the DCI format 0 that eNB sends on PDCCH, expression UE feeds back by PUSCH.
By above-mentioned explanation as can be seen, CQI feedback model that can only performance period in PUCCH then can performance period or aperiodic two kinds of CQI feedback models in PUSCH, specifically adopt which kind of CQI feedback model, are provided with according to system requirements.
Further again, for the illustrated technical scheme of each above-mentioned embodiment, can come the set-up mode of place of switches position by the mode of bit of expansion CQI-request.
In this case, most of step is identical with aforementioned each embodiment, is being distinct in the 3rd step.
Among each embodiment the 3rd is in the step, and eNB no longer is by the switch bit setting among the DCI format 0 by PDCCH to the mode that UE sends the setting of transmission plan and feedback model, but distinguishes by the different bits after the expansion, is specially:
(1) eNB represents feedback channel with the lowest order of CQI request in DCI format 0.
For example, according to whether feeding back the CQI request among the DCI format 0 is labeled as 0 or 1 on PUSCH, wherein, 1 expression UE feeds back by PUSCH, and 0 expression UE feeds back by PUCCH.
(2) transmission plan or feedback kind are indicated in eNB other positions with CQI request in DCI format 0, and usage is identical with switch bit, does not repeat them here.
As shown in figure 11, the embodiment of the invention has proposed the collocation method of another kind of transmission plan and/or feedback model, by using this method, and the transmission plan and/or the feedback model of the configuration UE that eNB can implicit expression.
Be fed back to example with the eNB configuration UE at the CQI of the enterprising line period of PUSCH, this method specifically may further comprise the steps:
Step S1101, eNB carry out the CQI in cycle by many RRC notice UE and report the pairing different feedback models of configuration information such as pairing resource index, configuration index and CQI form.
Step S1102, eNB select whether to use the transmission plan of CoMP, if use the transmission plan of CoMP, eNB determines further which kind of transmission plan UE adopts.
Step S1103, eNB send the transmission plan of implicit expression and the setting of feedback model by PDCCH to UE.
Similar with previous embodiment, owing in step S1101, adopt the CQI feedback model in cycle, further in PDCCH, send the feedback channel that DCI format 0 indication UE is adopted in this step in the CQI in cycle feedback model by RRC signaling UE.
In the present embodiment, the CQI request=1 among the DCI format 0 that eNB sends on PDCCH, expression UE feeds back by PUSCH.
Further, carry out the implicit expression configuration of transmission plan and feedback model, specifically comprise following several mode:
Mode one, eNB are provided with I
MCS=29 (value of the MCS of expression notice is 29), N
PRB≤ 4 o'clock, UE did not have transfer of data in PUSCH, and the whole of transmission are the control information of feedback, the corresponding feedback kind A of this kind situation; ENB is provided with I
MCS=29,
(for example,
), UE does not have transfer of data in PUSCH, and the whole of transmission are the control information of feedback, the corresponding feedback kind B of this kind situation.Different feedback kind can corresponding different transmission plans.
Mode two, eNB are provided with N
PRBDuring≤4 (all less), I is set in the corresponding transmission of different transmission schemes content
MCS=29, UE does not have transfer of data in PUSCH, and the whole of transmission are the control information of feedback, corresponding feedback kind A; ENB is provided with N
PRB≤ 4 o'clock, I
MCS=30, UE does not have transfer of data in PUSCH, and the whole of transmission are the control information of feedback, corresponding feedback kind B.
Mode three, eNB are provided with different RNTI, corresponding feedback kind A of A-RNTI or transmission plan A, corresponding feedback kind B of B-RNTI or transmission plan B.
In concrete application scenarios, specifically adopting above-mentioned any mode to carry out the implicit expression setting does not influence protection scope of the present invention.
Step S1104, UE feed back the feedback content that satisfies transmission plan by the feedback kind of implicit expression indication or the RRC signaling of transmission plan and correspondence in PUSCH.
Step S1105, eNB receive the feedback content when former transmission plan that UE fed back.
Step S1106, when eNB with reference to when the feedback content of former transmission plan, thinking needs to switch transmission plan, will require the feedback content of the new transmission plan of UE feedback, and switch to new transmission plan after receiving corresponding feedback content.
Concrete, transmission plan is switched in decision can be according to following dual mode:
Mode one, direct-cut operation transmission plan: when existing transmission plan does not satisfy performance requirement, be directly switch to new transmission plan.
In this way, can set in advance first-selected switching transmission plan.
Mode two, make a strategic decision whether switch transmission plan according to the feedback content of a period of time.
In this way, can set in advance a long and short two feedback cycle according to overhead size, wherein, short period feedback (expense is less) satisfies the needs of existing transmission plan, and long period feedback (expense is bigger) satisfies the needs of all transmission plans.
For the second way, can increase a RRC signaling separately and indicate macrocyclic feedback, no matter switch to which kind of short period feedback, when arriving the time point of long period feedback, UE carries out the long period feedback according to this RRC signaling configuration.Wherein, the configuration information in this RRC signaling can be indicated with switch bit, also can be used as default configuration.
Compared with prior art, the present invention has the following advantages:
By using technical scheme of the present invention, can realize the feedback model that different CoMP transmission plans is corresponding different, feedback resources can better be saved, and transmission plan and feedback model can be switched faster with respect to original RRC signaling with the method that switch is set of physical layer control channel.
As shown in figure 12, the embodiment of the invention has proposed the collocation method of another kind of transmission plan and/or feedback model, and by using this method, eNB can use the transmission plan and/or the feedback model of the mode configuration UE of implicit expression and explicit mixing.
Be fed back to example with the eNB configuration UE at the CQI of the enterprising line period of PUSCH, this method specifically may further comprise the steps:
Step S1201, eNB carry out the CQI in cycle by many RRC notice UE and report the pairing different feedback models of configuration information such as pairing resource index, configuration index and CQI form.
Step S1202, eNB select whether to use the transmission plan of CoMP, if use the transmission plan of CoMP, eNB determines further which kind of transmission plan UE adopts.
Step S1203, eNB send by the set transmission plan of the mode of implicit expression and explicit mixing and the setting of feedback model to UE by PDCCH.
Similar with previous embodiment, owing in step S1201, adopt the CQI feedback model in cycle, further in PDCCH, send the feedback channel that DCI format 0 indication UE is adopted in this step in the CQI in cycle feedback model by RRC signaling UE.
In the present embodiment, the CQI request=1 among the DCI format 0 that eNB sends on PDCCH, expression UE feeds back by PUSCH.
On the other hand, eNB indicates transmission plan with switch bit in DCI format 0, in order to reduce the expansion of bit as far as possible, can adopt the form of the refinement more shown in form shown in the above-mentioned table 2 and the table 3 to represent transmission plan equally.
In the present embodiment, suppose that eNB is transmission plan A with the indicated transmission plan of switch bit in DCI format 0.
Further, corresponding above-mentioned transmission plan carries out the implicit expression configuration of feedback model, specifically comprises following several mode:
Mode one, eNB are provided with I
MCS=29 (value of the MCS of expression notice is 29), N
PRB≤ 4 o'clock, UE did not have transfer of data in PUSCH, and the whole of transmission are the control information of feedback, the feedback kind A among the corresponding transmission plan A of this kind situation; ENB is provided with I
MCS=29,
(for example,
), UE does not have transfer of data in PUSCH, and the whole of transmission are the control information of feedback, the feedback kind B among the corresponding transmission plan A of this kind situation.If the indicated transmission plan of aforesaid switch bit is transmission plan B, then above-mentioned two kinds are provided with pairing two kinds of feedback kind that are respectively transmission plan B.
Mode two, eNB are provided with N
PRBDuring≤4 (all less), I is set in the corresponding transmission of different transmission schemes content
MCS=29, UE does not have transfer of data in PUSCH, and the whole of transmission are the control information of feedback, the feedback kind A among the corresponding transmission plan A; ENB is provided with N
PRB≤ 4 o'clock, I
MCS=30, UE does not have transfer of data in PUSCH, and the whole of transmission are the control information of feedback, the feedback kind B among the corresponding transmission plan A.If the indicated transmission plan of aforesaid switch bit is transmission plan B, then above-mentioned two kinds are provided with pairing two kinds of feedback kind that are respectively transmission plan B.
Mode three, eNB are provided with different RNTI, the feedback kind A among the corresponding transmission plan A of A-RNTI, the feedback kind B among the corresponding transmission plan A of B-RNTI.If the indicated transmission plan of aforesaid switch bit is transmission plan B, then above-mentioned two kinds are provided with pairing two kinds of feedback kind that are respectively transmission plan B.
In concrete application scenarios, specifically adopting above-mentioned any mode to carry out the implicit expression setting does not influence protection scope of the present invention.
Feedback kind that step S1204, UE indicate by the mode of implicit expression and explicit mixing or transmission plan and corresponding RRC signaling are fed back the feedback content that satisfies transmission plan in PUSCH.
Step S1205, eNB receive the feedback content when former transmission plan that UE fed back.
Step S1206, when eNB with reference to when the feedback content of former transmission plan, thinking needs to switch transmission plan, will require the feedback content of the new transmission plan of UE feedback, and switch to new transmission plan after receiving corresponding feedback content.
Concrete, transmission plan is switched in decision can be according to following dual mode:
Mode one, direct-cut operation transmission plan: when existing transmission plan does not satisfy performance requirement, be directly switch to new transmission plan.
In this way, can set in advance first-selected switching transmission plan.
Mode two, make a strategic decision whether switch transmission plan according to the feedback content of a period of time.
In this way, can set in advance a long and short two feedback cycle according to overhead size, wherein, short period feedback (expense is less) satisfies the needs of existing transmission plan, and long period feedback (expense is bigger) satisfies the needs of all transmission plans.
For the second way, can increase a RRC signaling separately and indicate macrocyclic feedback, no matter switch to which kind of short period feedback, when arriving the time point of long period feedback, UE carries out the long period feedback according to this RRC signaling configuration.Wherein, the configuration information in this RRC signaling can be indicated with switch bit, also can be used as default configuration.
Compared with prior art, the present invention has the following advantages:
By using technical scheme of the present invention, can realize the feedback model that different CoMP transmission plans is corresponding different, feedback resources can better be saved, and transmission plan and feedback model can be switched faster with respect to original RRC signaling with the method that switch is set of physical layer control channel.
In order to realize technical scheme of the present invention, the embodiment of the invention also provides a kind of base station, as shown in figure 13, comprising:
Sending module 1302 is used for sending to subscriber equipment by PDCCH and comprises the transmission plan that generation module 1301 generated and/or the message of feedback model information;
Preferably, sending module 1302, also be used for sending different feedback model aperiodic of RRC signaling configuration to subscriber equipment, or, report resource index, configuration index and CQI format information comprising the pairing CQI of periodic feedback pattern to the different periodic feedback pattern of subscriber equipment transmission RRC signaling configuration.
Preferably, sending module 1302 disposes a plurality of different aperiodic of feedback model or periodic feedback pattern respectively by many groups RRC signaling; Or,
The different parameters of sending module 1302 by one group of RRC signaling disposes a plurality of different aperiodic of feedback model or periodic feedback pattern.
Preferably, the base station also comprises:
Preferably, handover module 1305 is used for carrying out the switching of transmission plan after receiver module receives the corresponding feedback content of subscriber equipment transmission, specifically comprise:
On the other hand, as shown in figure 14, the embodiment of the invention also provides a kind of user terminal, comprising:
Preferably, receiver module 1401 also is used to receive the base station by different feedback model aperiodic of RRC signaling configuration; And/or, receive the base station by the different periodic feedback pattern of RRC signaling configuration, report resource index, configuration index and CQI format information comprising the pairing CQI of periodic feedback pattern.
Compared with prior art, the present invention has the following advantages:
By using technical scheme of the present invention, can realize the feedback model that different CoMP transmission plans is corresponding different, feedback resources can better be saved, and transmission plan and feedback model can be switched faster with respect to original RRC signaling with the method that switch is set of physical layer control channel.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by hardware, also can realize by the mode that software adds necessary general hardware platform.Based on such understanding, technical scheme of the present invention can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, comprise some instructions with so that computer equipment (can be personal computer, server, perhaps base station equipment etc.) each implements the described method of scene to carry out the present invention.
It will be appreciated by those skilled in the art that accompanying drawing is a preferred schematic diagram of implementing scene, module in the accompanying drawing or flow process might not be that enforcement the present invention is necessary.
It will be appreciated by those skilled in the art that the module in the device of implementing in the scene can be distributed in the device of implementing scene according to implementing scene description, also can carry out respective change and be arranged in the one or more devices that are different from this enforcement scene.The module of above-mentioned enforcement scene can be merged into a module, also can further split into a plurality of submodules.
The invention described above sequence number is not represented the quality of implementing scene just to description.
More than disclosed only be several concrete enforcement scene of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into feedback information scope of the present invention.
Claims (22)
1. the collocation method of transmission plan and/or feedback model is characterized in that, specifically may further comprise the steps:
The base station sends the message that comprises transmission plan and/or feedback model information by physical downlink control channel PDCCH to subscriber equipment;
Described base station receives the feedback content that described subscriber equipment feeds back according to described transmission plan and/or the pairing mode of feedback model information.
2. the method for claim 1 is characterized in that, described base station, also comprised before the subscriber equipment transmission comprises the message of transmission plan and/or feedback model information by PDCCH:
Described base station is by different feedback model aperiodic of RRC signaling configuration; And/or,
Described base station is by the different periodic feedback pattern of RRC signaling configuration, comprising pairing resource index, configuration index and the format information of reporting of described periodic feedback pattern.
3. method as claimed in claim 2 is characterized in that, specifically comprises:
Described base station disposes a plurality of different aperiodic of feedback model or periodic feedback pattern respectively by many groups RRC signaling; Or,
The different parameters of described base station by one group of RRC signaling disposes a plurality of different aperiodic of feedback model or periodic feedback pattern.
4. the method for claim 1 is characterized in that, the configuration mode of described transmission plan and/or feedback model information comprises:
Explicit configuration mode; Or,
The implicit expression configuration mode; Or,
The mixed configuration mode of explicit and implicit expression.
5. method as claimed in claim 4 is characterized in that, described explicit configuration mode comprises:
Different transmission plan and/or feedback model are being indicated with different switch bit by PDCCH in described base station in the message that subscriber equipment sent; Or,
Different transmission plan and/or feedback model are being indicated with different bits by PDCCH in described base station in the message that subscriber equipment sent.
6. method as claimed in claim 4 is characterized in that, described implicit expression configuration mode comprises:
Different transmission plan and/or feedback model are being indicated with different parameter value scopes by PDCCH in described base station in the message that subscriber equipment sent; Or,
Different transmission plan and/or feedback model are being indicated with different RNTI by PDCCH in described base station in the message that subscriber equipment sent.
7. method as claimed in claim 4 is characterized in that, the mixed configuration mode of described explicit and implicit expression comprises:
Different transmission plan indicated with different switch bit or bit by PDCCH in described base station in the message that subscriber equipment sent, and with different parameter value scopes or the different feedback model of RNTI indication.
8. as claim 6 or 7 described methods, it is characterized in that, when described different parameter value scope comprises described subscriber equipment by the Uplink Shared Channel control channel, the size of the Resource Block that is transmitted in the described Uplink Shared Channel or MCS grade, described base station is by the size or the different feedback content or the feedback kind of MCS grade distinguishing of described Resource Block.
9. the method for claim 1 is characterized in that, described base station receives after the feedback content that described subscriber equipment feeds back according to described transmission plan and/or the pairing mode of feedback model information, also comprises:
Described base station judges whether that according to described feedback content needs switch the transmission plan and/or the feedback model of described subscriber equipment;
Need to switch if described base station is judged, then after the corresponding feedback content that obtains described subscriber equipment transmission, carry out the switching of transmission plan.
10. the method for claim 1 is characterized in that, the switching of transmission plan is carried out in described base station after the corresponding feedback content that obtains described subscriber equipment transmission, specifically comprise:
Described base station directly switches to new transmission plan with current transmission plan; Or,
Described base station judges whether current transmission plan is switched to new transmission plan according to the feedback content in the default time range.
11. method as claimed in claim 10 is characterized in that, described base station judges whether current transmission plan is switched to new transmission plan according to the feedback content in the default time range, comprising:
Described base station is provided with two feedback cycles, satisfies existing transmission plan with the less feedback cycle of expense, satisfies new transmission plan with the bigger feedback cycle of expense.
12. method as claimed in claim 11 is characterized in that, also comprises:
The feedback of the bigger feedback cycle of described expense is indicated by the RRC signaling in described base station, makes described subscriber equipment when arriving the time point of the bigger feedback cycle of described expense, feeds back according to described RRC signaling configuration;
Wherein, the configuration for the feedback of the bigger feedback cycle of described expense in the described RRC signaling is disposed by switch bit, or default configuration.
13. a base station is characterized in that, comprising:
Generation module is used to generate transmission plan and/or feedback model information;
Sending module is used for sending to subscriber equipment by PDCCH and comprises the transmission plan that described generation module generates and/or the message of feedback model information;
Receiver module is used to receive the feedback content that described subscriber equipment feeds back according to described transmission plan and/or the pairing mode of feedback model information.
14. base station as claimed in claim 13 is characterized in that, described sending module also is used for sending different feedback model aperiodic of RRC signaling configuration to described subscriber equipment; Or to the different periodic feedback pattern of described subscriber equipment transmission RRC signaling configuration, comprising pairing resource index, configuration index and the format information of reporting of described periodic feedback pattern.
15. base station as claimed in claim 14 is characterized in that,
Described sending module disposes a plurality of different aperiodic of feedback model or periodic feedback pattern respectively by many groups RRC signaling; Or,
The different parameters of described sending module by one group of RRC signaling disposes a plurality of different aperiodic of feedback model or periodic feedback pattern.
16. base station as claimed in claim 13 is characterized in that, also comprises:
Judge module, the feedback content that is used for receiving according to described receiver module judge whether that needs switch the transmission plan and/or the feedback model of described subscriber equipment;
Handover module when described judge module judgement needs to switch, is used for carrying out the switching of transmission plan after described receiver module receives the corresponding feedback content of described subscriber equipment transmission.
17. base station as claimed in claim 16 is characterized in that, described handover module is used for carrying out the switching of transmission plan after described receiver module receives the corresponding feedback content of described subscriber equipment transmission, specifically comprise:
Described handover module directly switches to new transmission plan with current transmission plan; Or,
Described judge module judges whether current transmission plan is switched to new transmission plan according to the feedback content that described receiver module received in the default time range, and in judged result when being, by described handover module current transmission plan is switched to new transmission plan.
18. the collocation method of transmission plan and/or feedback model is characterized in that, specifically may further comprise the steps:
Subscriber equipment receives the message that comprises transmission plan and/or feedback model information that the base station sends by PDCCH;
Described subscriber equipment according to described transmission plan and/or the pairing mode of feedback model information to the corresponding feedback content of described base station feedback.
19. method as claimed in claim 18 is characterized in that, described subscriber equipment receives before the message that comprises transmission plan and/or feedback model information of base station transmission by PDCCH, also comprises:
Described subscriber equipment receives described base station by different feedback model aperiodic of RRC signaling configuration; And/or,
Described subscriber equipment receives described base station by the different periodic feedback pattern of RRC signaling configuration, comprising pairing resource index, configuration index and the format information of reporting of described periodic feedback pattern.
20. method as claimed in claim 18 is characterized in that, the configuration mode of described transmission plan and/or feedback model information comprises:
Explicit configuration mode; Or,
The implicit expression configuration mode; Or,
The mixed configuration mode of explicit and implicit expression.
21. a user terminal is characterized in that, comprising:
Receiver module is used for receiving the message that comprises transmission plan and/or feedback model information that the base station sends by PDCCH;
Identification module is used for the message that receives according to described receiver module, discerns corresponding transmission plan and/or feedback model;
Feedback module is used for the transmission plan discerned according to described identification module and/or the feedback model corresponding feedback content to described base station feedback.
22. user terminal as claimed in claim 21 is characterized in that, described receiver module also is used to receive described base station by different feedback model aperiodic of RRC signaling configuration; And/or, receive described base station by the different periodic feedback pattern of RRC signaling configuration, comprising pairing resource index, configuration index and the format information of reporting of described periodic feedback pattern.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910091433.1A CN101998327B (en) | 2009-08-21 | 2009-08-21 | Method and equipment for configuring transmission scheme and/or feedback mode |
| PCT/CN2010/076153 WO2011020439A1 (en) | 2009-08-21 | 2010-08-19 | Method and device for configuring transmission scheme and/or feedback mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN101998327B (en) | 2014-04-02 |
| WO2011020439A1 (en) | 2011-02-24 |
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