CN103944666A - Subframe collocation method and device - Google Patents
Subframe collocation method and device Download PDFInfo
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- CN103944666A CN103944666A CN201310020284.6A CN201310020284A CN103944666A CN 103944666 A CN103944666 A CN 103944666A CN 201310020284 A CN201310020284 A CN 201310020284A CN 103944666 A CN103944666 A CN 103944666A
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Abstract
The embodiment of the invention discloses a subframe collocation method and device. The subframe collocation method may comprise the steps that at least one downlink subframe in downlink subframes which may be re-collocated to be uplink subframes is collocated into an uplink rate matching subframe which is transmitted in an orthogonal frequency-division multiplexing (OFDM) mode, and the first one or first two OFDM symbols in the uplink rate matching subframe are not used for uplink transmission. According to the method, the downlink (DL) subframes which may be re-collocated to the uplink (UL) subframes are collocated in an adaptation mode, DL measuring of UE can be prevented from being affected by UL interference when the DL subframes are re-collocated into the UL subframes, and accordingly the problem of backward compatibility of the UE is solved.
Description
Technical field
Embodiments of the present invention relate to communication technical field, and relate more specifically to sub-frame configuration method and apparatus.
Background technology
In current time division duplex (TDD) Long Term Evolution (LTE)/senior Long Term Evolution (LTE-A) system, transmit TDD configuration via system information block 1 (SIB1).In existing LTE agreement, specify the frame structure of seven kinds of TDD configurations as shown in table 1:
Table 1
Wherein, D represents down link (DL) subframe, subframe that S represents special (S), and U represents up link (UL) subframe.Conventionally, S subframe also can be transmitted for DL, and therefore for the sake of simplicity, " S " subframe also can be regarded as " D " subframe.
Along with the variation of uplink downlink business, can periodic variation TDD configuration.For example,, if current UL business, obviously more than DL business, can be defined as configuration #0 TDD configuration.Next, along with the increase of DL business, configuration #0 possibly cannot satisfy the demands again, TDD configuration can be become to configuration #2.The minimal modifications cycle of SIB1 is 640ms at present, and this possibly cannot match with the transient change of business.Thereby, shorter dynamic TDD UL-DL configuration of cycle has been proposed, to can more promptly business be changed and be made a response, this shorter time scale have demonstrated better performance.For example, once base station (eNB) determines to change TDD configuration, it need to send signaling with higher frequency, to notify the TDD reshuffling configuration to subscriber equipment (UE).According to the regulation of current LTE agreement, version 12 (Rel-12) and the later UE of version can support shorter the reshuffling of this cycle, and traditional Rel-8 cannot support this reshuffling to the UE of Rel-11.
According to current standard, UE need to cell reference signals (the CRS)/channel state information reference signals (CSI-RS) based on DL transmission carry out the measurement such as radio link monitoring (RLM)/RRM (RRM), CQI (CQI).If be re-equipped and be set to UL subframe by dynamic TDD UL-DL configuration DL subframe, traditional Rel-8 will cause the measurement such as RLM/RRM, CQI inaccurate because there is no CRS/CSI/RS transmission in the UL subframe new to the UE of Rel-11.
In LTE Rel-10, introduced the measurement of restriction subframe for interference coordination between enhancement type district (eICIC), the subframe that wherein regularly some DL subframe (being subframe #0, #1, #5 and #6) is configured to measure for UE, thus the backward compatibility issues for Rel-10 and later version UE solved.But the UE of Rel-8 and Rel-9 does not support this configuration, therefore still there is backward compatibility issues for the UE of Rel-8 and Rel-9.
Summary of the invention
For the defect of prior art, embodiments of the present invention provide a kind of sub-frame configuration method and apparatus.
According to a first aspect of the invention, provide a kind of sub-frame configuration method.The method comprises that by least one downlink subframe configurations being likely re-equipped in the downlink subframe that is set to uplink sub-frames be uplink rate coupling subframe, wherein uplink rate coupling subframe is transmitted in orthogonal frequency division multiplex OFDM mode, and first or the first two OFDM symbol in uplink rate coupling subframe is not used in ul transmissions.
In one embodiment, first or the first two OFDM symbol of uplink rate coupling subframe are punched, so that it is not used in ul transmissions.
In one embodiment, configuration protection period after first or the first two OFDM symbol and then in uplink rate coupling subframe.
In one embodiment, at least one the OFDM symbol after protective time slot is configured for and carries out ul transmissions.
In one embodiment, the length of protective time slot is configured to be less than the length of an OFDM symbol.
In one embodiment, the uplink sub-frames that can not change after reshuffling is configured to standard uplink subframe.
According to a second aspect of the invention, provide a kind of sub-frame configuration method.The method comprises that by least one downlink subframe configurations being likely re-equipped in the downlink subframe that is set to uplink sub-frames be multicast broadcast single frequency network MBSFN subframe.
In one embodiment, first or the first two OFDM symbol of MBSFN subframe are configured for to the downlink transmission of control signal and reference signal.
In one embodiment, the uplink sub-frames that can not change after reshuffling is configured to standard uplink subframe.
According to a third aspect of the invention we, provide a kind of sub-frame configuration method.The method comprises that by least one the downlink subframe fixed configurations being likely re-equipped in the downlink subframe that is set to uplink sub-frames be the downlink subframe for reference signal transmission, makes this at least one downlink subframe in the time that dynamic frame configures can not be re-equipped and be set to uplink sub-frames.
In one embodiment, be the downlink subframe for reference signal transmission by the downlink subframe fixed configurations in present frame configuration, make the downlink subframe in present frame configuration in the time carrying out dynamic frame configuration can not be re-equipped and be set to uplink sub-frames.
In one embodiment, the discontinuous reception DRX period of UE is set and wakes up the duration, make the downlink subframe in the duration waken up in described DRX cycle be fixed and be configured to the downlink subframe for reference signal transmission, thereby the downlink subframe of the configuration that is fixed in the time that dynamic frame configures can not be re-equipped and be set to uplink sub-frames.
In one embodiment, DRX cycle is set to the length of a frame or field, or the length of its integral multiple.
According to a forth aspect of the invention, provide a kind of sub-frame configuration equipment.This equipment comprises uplink rate coupling sub-frame configuration device, it is configured at least one downlink subframe configurations being likely re-equipped in the downlink subframe that is set to uplink sub-frames is uplink rate coupling subframe, wherein uplink rate coupling subframe is transmitted in OFDM mode, and first or the first two OFDM symbol in uplink rate coupling subframe is not used in ul transmissions.
In one embodiment, uplink rate coupling sub-frame configuration device is also configured to first or the first two OFDM symbol in uplink rate coupling subframe to punch, so that it is not used in ul transmissions.
In one embodiment, and then uplink rate coupling sub-frame configuration device is also configured in uplink rate coupling subframe the configuration protection period after first or the first two OFDM symbol.
In one embodiment, uplink rate coupling sub-frame configuration device is also configured at least one the OFDM symbol after protective time slot to be configured for and to carry out ul transmissions.
In one embodiment, uplink rate coupling sub-frame configuration device is also configured to the length of protective time slot to be configured to be less than the length of an OFDM symbol.
In one embodiment, this equipment also comprises standard uplink sub-frame configuration device, and it is configured to the uplink sub-frames that can not change after reshuffling to be configured to standard uplink subframe.
According to a fifth aspect of the invention, provide a kind of sub-frame configuration equipment.This equipment comprises MBSFN sub-frame configuration device, and it is configured at least one downlink subframe configurations being likely re-equipped in the downlink subframe that is set to uplink sub-frames is MBSFN subframe.
In one embodiment, MBSFN sub-frame configuration device is also configured to first or the first two OFDM symbol of MBSFN subframe to be configured for the downlink transmission of reference signal.
In one embodiment, this equipment also comprises standard uplink sub-frame configuration device, and it is configured to the uplink sub-frames that can not change after reshuffling to be configured to standard uplink subframe.
According to a sixth aspect of the invention, provide a kind of sub-frame configuration equipment.This equipment comprises downlink subframe configurations device, it is configured at least one the downlink subframe fixed configurations being likely re-equipped in the downlink subframe that is set to uplink sub-frames is the downlink subframe for reference signal transmission, makes this at least one downlink subframe in the time that dynamic frame configures can not be re-equipped and be set to uplink sub-frames.
In one embodiment, it is the downlink subframe for reference signal transmission that downlink subframe configurations device is also configured to the downlink subframe fixed configurations in present frame configuration, makes the downlink subframe in present frame configuration in the time carrying out dynamic frame configuration can not be re-equipped and be set to uplink sub-frames.
In one embodiment, this equipment also comprises DRX cycle setting device, it is configured to the DRX cycle of UE is set and wakes up the duration, making downlink subframe configurations device is the downlink subframe for reference signal transmission by the downlink subframe fixed configurations of waking up in the duration in DRX cycle, thereby the downlink subframe of the configuration that is fixed in the time that dynamic frame configures can not be re-equipped and be set to uplink sub-frames.
In one embodiment, DRX cycle setting device is also configured to DRX cycle and is set to the length of a frame or field, or the length of its integral multiple.
Embodiments of the present invention are carried out adaptability configuration by the DL subframe that is set to UL subframe to being likely re-equipped, and can avoid the DL of UE to measure because DL subframe is re-equipped and be set to UL subframe and be subject to the impact that UL disturbs, thereby solve the problem of UE backward compatibility.
Brief description of the drawings
Describe in detail by reference to the accompanying drawings and with reference to following, feature, advantage and other aspects of the each execution mode of the present invention will become more obvious.In the accompanying drawings, same or analogous Reference numeral represents same or analogous element, wherein:
Fig. 1 shows according to the flow chart of the sub-frame configuration method 100 of an embodiment of the invention;
Fig. 2 shows the example of the structure of existing MBSFN subframe;
Fig. 3 shows according to the example arrangement of the UL rate-matched subframe of an embodiment of the invention;
Fig. 4 shows the flow chart of sub-frame configuration method 400 according to another implementation of the invention;
Fig. 5 shows according to the flow chart of the sub-frame configuration method 500 of another execution mode of the present invention;
Fig. 6 (a) and Fig. 6 (b) show DRX cycle according to the embodiment of the present invention and wake the example of duration up;
Fig. 7 shows according to the block diagram of the sub-frame configuration equipment 700 of an embodiment of the invention;
Fig. 8 shows the block diagram of sub-frame configuration equipment 800 according to another implementation of the invention; And
Fig. 9 shows according to the block diagram of the sub-frame configuration equipment 900 of another execution mode of the present invention.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the present invention are explained in more detail and are illustrated.Should be understood that, drawings and the embodiments of the present invention are only for exemplary effect, not for limiting the scope of the invention.
Flow chart in accompanying drawing and block diagram, illustrate architectural framework in the cards, function and operation according to the method and apparatus of the various execution modes of the present invention.In this, the each square frame in flow chart or block diagram can represent a part for module, program segment or a code, and a part for described module, program segment or code comprises one or more for realizing the executable instruction of logic function of regulation.Also it should be noted that some as alternative realization in, the function marking in square frame also can be different from occurring in sequence of marking in accompanying drawing.For example, in fact the square frame that two adjoining lands represent can be carried out substantially concurrently, and they also can be carried out by contrary order sometimes, and this determines according to related function.Also be noted that, the combination of the square frame in each square frame and block diagram and/or flow chart in block diagram and/or flow chart, can realize by the special hardware based system of the function putting rules into practice or operation, or can realize with the combination of specialized hardware and computer instruction.
Describe the embodiments of the present invention below in conjunction with accompanying drawing in detail in the mode of example.
Fig. 1 shows according to the flow chart of the sub-frame configuration method 100 of an embodiment of the invention.A kind of new subframe structure, i.e. UL rate-matched subframe have been proposed in this execution mode of the present invention.UL rate-matched subframe is based on existing multicast broadcast single frequency network (MBSFN) subframe.
The known MBSFN subframe that just defined in the first version of LTE.As its name suggests, the initial purposes of MBSFN subframe is to support MBSFN transmission.As shown in Figure 2, existing MBSFN subframe comprises the control area of long one or two OFDMs (OFDM) symbol, after control area, is MBSFN region, and the structure in MBSFN region and content depend on the purposes of MBSFN subframe.According to LTE agreement, the UE of Rel-8 and later version can receive the transmission in the control area of MBSFN subframe, and the UE that can not receive this transmission will ignore these transmission simply.And according to LTE agreement, Rel-8/9UE will can not make a response to the transmission in MBSFN region.
Describe according to the sub-frame configuration method 100 of an embodiment of the invention and UL rate-matched subframe below with reference to Fig. 1.As shown in Figure 1, after method 100 starts, at step S101, be UL rate-matched subframe by least one the DL sub-frame configuration being likely re-equipped in the DL subframe that is set to UL subframe, wherein UL rate-matched subframe is transmitted in OFDM mode, and first or the first two OFDM symbol in UL rate-matched subframe is not used in UL transmission.In one embodiment, can be according to reshuffling the number of determining the subframe that is configured to UL rate-matched subframe with system configuration.
Fig. 3 shows according to the example format of the UL rate-matched subframe of an embodiment of the invention.As shown in Figure 3, first or the first two symbol of UL rate-matched subframe are corresponding to the control area of MBSFN subframe.
As mentioned before, Rel-8/9UE can receive the transmission in the control area of MBSFN subframe, so can send the reference signal of measuring for UE by the Resource Unit of the control area of MBSFN subframe.If the UE of Advanced Edition carries out UL transmission between this control area transmission period, can cause severe jamming to the measurement of Rel-8/9UE.Therefore, according to the embodiment of the present invention, first or the first two OFDM symbol in UL rate-matched subframe are not configured for and carry out UL transmission.Because Rel-8/9UE can only receive the transmission of the control area of MBSFN subframe, so the UL transmission in UL rate-matched subframe as above can not cause interference to the measurement of Rel-8/9UE.
According to this sub-frame configuration method of the present invention, can be in the time carrying out dynamic TDD UL-DL configuration, avoid DL subframe to become the DL of traditional UE being measured to operation after UL subframe causing interference.
In one embodiment, first or the first two OFDM subframe of UL rate-matched subframe are punched, so that it is not used in UL transmission.
In one embodiment, configuration protection period after first or the first two OFDM symbol and then in UL rate-matched subframe.As shown in Figure 3, in UL rate-matched subframe, after back to back first or the first two OFDM symbol, be protective time slot.
Because inevitably can there is time delay in DL transmitting procedure, if therefore the UE of Advanced Edition carries out UL transmission and then last after two OFDM symbols, can cause interference to the reception of eNB.Therefore, after two OFDM symbols, protective time slot to be set be necessary last.
In one embodiment, at least one the OFDM symbol after protective time slot is configured for and carries out UL transmission.As shown in Figure 3, in UL rate-matched subframe, the resource after protective time slot is used for transmitting uplink data
In one embodiment, can the cell environment based on different determine the length of protective time slot.For example, can determine this length according to radius of society.It may occur to persons skilled in the art that the length that can configure according to the mode of configuration protection period in existing S subframe the protective time slot in UL rate-matched subframe.In one embodiment, the length of protective time slot can be configured to be less than the length of an OFDM symbol, thereby be the reserved more resource of UL transmission.
In one embodiment, can be standard UL subframe by the UL sub-frame configuration that can not change after reshuffling.
Above-mentioned sub-frame configuration method can for example, be located to carry out at network element (eNB).Now the configuration information of UL rate-matched subframe can be included in reconfiguration information or by channel signaling and offer UE by eNB.
Alternatively, above-mentioned sub-frame configuration method also can be located to carry out at terminal (as UE).For example, UE can according to the TDD configuration of SIB1 and dynamically TDD UL-DL configure which the DL subframe of TDD configuration judgement that may reshuffle and is likely re-equipped and is set to UL subframe, and correspondingly configure UL rate-matched subframe.Can use identical configuration rule with UE place at eNB, so just not need extra signaling to transmit configuration information.
Fig. 4 shows the flow chart of sub-frame configuration method 400 according to another implementation of the invention.
As shown in Figure 4, after method 400 starts, at step S401, be MBSFN subframe by least one the DL sub-frame configuration being likely re-equipped in the DL subframe that is set to UL subframe.
As previously mentioned, Rel-8/9UE can receive the transmission in the control area of MBSFN subframe.If be UL rate-matched subframe in this paper for the UL of Advanced Edition by the sub-frame configuration that may change into UL subframe from DL subframe potentially, pin is MBSFN subframe in traditional UE by these sub-frame configuration, after can avoiding DL subframe to become UL subframe, the DL measurement operation of traditional UE is caused to interference, thereby solved the backward compatibility issues of traditional UE.
Taking existing LTE agreement as example, the mode of configuration MBSFN subframe is described below.According to the regulation of agreement, in TDD, subframe #0, #1, #5 and #6 as shown in table 1 can not be configured to MBSFN subframe, and remaining like this all the other six subframes can be used as the candidate of MBSFN subframe.Carrying out dynamic TDD UL-DL while reshuffling, only subframe #3, #4, #7, #8 and #9 likely become UL from DL, so these subframes can be configured to MBSFN subframe.But, it may occur to persons skilled in the art that embodiments of the present invention and be limited to the concrete regulation of above-mentioned LTE agreement, but can be applied in the situation that has any MBSFN subframe candidate and any TDD configuration.
Equally, described in method 100, can be according to the number of UL business demand and the definite subframe that is configured to MBSFN subframe of system configuration.
In an embodiment of the invention, first or the first two OFDM symbol of MBSFN subframe are configured for to the DL transmission of reference signal.That is to say, eNB can normally send reference signal on the control area of MBSFN subframe.Correspondingly, traditional UE carries out and measures based on the reference signal of transmitting on this control area.In this case, owing to there is no UL operation at this to two OFDM symbols, so traditional UE will can not be subject to the impact of UL interference.
Equally, in one embodiment, can be standard UL subframe by the UL sub-frame configuration that can not change after reshuffling.
Sub-frame configuration method 400 equally both can be carried out at network element place, also can carry out in end.That in specific implementation and method 100, describes is similar, does not repeat them here.
Fig. 5 shows according to the flow chart of the sub-frame configuration method 500 of another execution mode of the present invention.
As shown in Figure 5, after method 500 starts, at step S501, be the DL subframe for reference signal transmission by least one the DL subframe fixed configurations being likely re-equipped in the DL subframe that is set to UL subframe, make in the time that dynamic frame configures described at least one downlink subframe can not be re-equipped and be set to uplink sub-frames.
In one embodiment, with reference to the TDD configuration #1 shown in table 1, subframe #4 & #9 is configured to the DL subframe for reference signal transmission regularly.Like this, these DL subframes just can not be re-equipped and be set to UL subframe, therefore can not cause interference to user's measurement operation.Equally, it may occur to persons skilled in the art that embodiments of the present invention and be limited to the TDD configuration shown in table 1, but can use any TDD configuration.
Because according to this execution mode of the present invention, some subframe is fixed and is configured to DL subframe, can correspondingly be restricted so dynamic TDD UL-DL configures the TDD configuration that may reshuffle.In the case of fixed configurations be the subframe of DL subframe chosen, the configuration set that may reshuffle comprises the configuration of the superset of the DL subframe set of the identical or fixed configurations of the DL subframe set of the set of DL subframe and fixed configurations, disturbs with the UL that avoids the DL of traditional UE to measure.For example, if the configuration that SIB1 transmits is configuration #1, subframe #4 & #9 can be configured to regularly to the DL subframe for reference signal transmission.Like this, the DL subframe of fixed configurations is subframe #0, #4, #5 and #9}.Because the DL subframe set of configuration #1, #2, #4 and #5 is identical with the subframe set of configuration #1, or the superset of the DL subframe set of configuration #1, be { #1, #2, #4, #5} so possible TDD reshuffles set.
In an embodiment of the invention, can be the downlink subframe for reference signal transmission by the downlink subframe fixed configurations in present frame configuration, make the downlink subframe in present frame configuration in the time carrying out dynamic frame configuration can not be re-equipped and be set to uplink sub-frames.For example, TDD configuration can be fixed as to certain configuration, for example, configure #1.
In an embodiment of the invention, discontinuous reception (DRX) cycle of UE can be set and wake up the duration, make the DL subframe in the duration waken up in DRX cycle be fixed and be configured to the DL subframe for reference signal transmission, thereby the DL subframe of the configuration that is fixed in the time that dynamic frame configures can not be re-equipped and is set to UL subframe.
Conventionally, UE saves the power of battery with DRX.In a DRX cycle, UE intercepts network waking up in the duration, closes its receiver at other times, enters energy-saving mode.
According to the embodiment of the present invention, can not be re-equipped and be set to UL subframe waking DL subframe in the duration up, thereby the DL of UE measures and can not be subject to UL and disturb, can normally carry out.And in the other times of DRX cycle, because the receiver of UE is closed, so also can not produce any interference even if DL subframe becomes UL subframe.
Describe DRX cycle according to the embodiment of the present invention and wake the example of duration up below with reference to Fig. 6 (a) and Fig. 6 (b).
As shown in Fig. 6 (a), if the TDD transmitting by SIB1 configuration is configuration #2, traditional UE will use this TDD configuration always, until it is reconfigured by SIB1 signaling.But if the UE of Rel-11 and later version supports the shorter dynamic TDD UL-DL of time scale to reshuffle, according to the TDD configuration shown in table 1, subframe #3, #8, #4 and/or #9 can become UL subframe based on business variation.Suppose to become #0 because UL business increases TDD configuration, subframe #3, #4, #8 and #9 become UL subframe from DL subframe like this.In this case, if traditional UE also carries out the measurement such as RRM/RLM, CQI in these subframes, measurement can be subject to serious UL interference, thereby causes to the measurement statistical value of eNB report inaccurate.
According to an embodiment of the invention, as shown in Fig. 6 (a), DRX cycle is made as to 5ms, waking the duration up is made as 2ms, make the DL subframe (for example subframe #0, #1, #5 and #6) fixedly remaining unchanged be comprised in and wake up in the duration, and for example, be comprised in the other times of DRX cycle from the subframe (subframe #3, #4, #8 and #9) that DL subframe becomes UL subframe.Like this, because UE closes its receiver at the other times of DRX cycle, therefore UE measures can not carry out DL in the subframe that may change, thereby can avoid the generation of above-mentioned disturbed condition.
Fig. 6 (b) has shown DRX cycle and has waken another example of duration up.In Fig. 6 (b), to reshuffle by dynamic TDD UL-DL, TDD configuration becomes configuration #2 from configuration #5.Now, be subject to UL for fear of UE measurement and disturb, DRX cycle and wake the duration up and be set to respectively 10ms and 3ms.
Equally, it will be appreciated by those skilled in the art that embodiments of the present invention and be limited to the TDD configuration shown in table 1, but can be applied in the situation that uses any TDD configuration.
DRX cycle shown in Fig. 6 (a) and Fig. 6 (b) is set to respectively the length of field and a frame, or the length of its integral multiple.But this is only example, it will be appreciated by those skilled in the art that DRX cycle and wake the duration up and can configure to arrange according to possible TDD.
Equally, sub-frame configuration method 500 both can be located to carry out at network element (as eNB), also can locate to carry out at terminal (as UE).If carry out at eNB place, DL subframe configuration information can be included in reconfiguration information or by channel signaling, DRX cycle configuration information is offered to UE by channel signaling by eNB.If carried out at UE place, UE can according to the TDD configuration of SIB1 and dynamically TDD UL-DL configure which the DL subframe of TDD configuration judgement that may reshuffle and is likely re-equipped and is set to UL subframe, and be correspondingly configured.Equally, can use identical configuration rule with UE place at eNB, thereby needn't transmit configuration information by extra signaling.
With reference now to Fig. 7 to Fig. 9 explanation, can carry out the equipment of said method 100,400 and 500.
Fig. 7 shows according to the block diagram of the sub-frame configuration equipment 700 of an embodiment of the invention.
Equipment 700 as shown in Figure 7 comprises UL rate-matched sub-frame configuration device 701, it is configured at least one the DL sub-frame configuration being likely re-equipped in the DL subframe that is set to UL subframe is UL rate-matched subframe, wherein UL rate-matched subframe is transmitted in OFDM mode, and first or the first two OFDM symbol in UL rate-matched subframe is not used in UL transmission.
In one embodiment, UL rate-matched sub-frame configuration device 701 is also configured to first or the first two OFDM subframe of UL rate-matched subframe to punch, so that it is not used in UL transmission.
In one embodiment, and then UL rate-matched sub-frame configuration device 701 is also configured in UL rate-matched subframe the configuration protection period after first or the first two OFDM symbol.
In one embodiment, UL rate-matched sub-frame configuration device 701 is also configured at least one the OFDM symbol after protective time slot to be configured for and to carry out UL transmission.
In one embodiment, UL rate-matched sub-frame configuration device 701 is also configured to the length of protective time slot to be configured to be less than the length of an OFDM symbol.
In one embodiment, equipment 700 also comprises standard UL sub-frame configuration device 702, and it is configured to the UL sub-frame configuration that can not change after reshuffling is standard UL subframe.
Fig. 8 shows the block diagram of sub-frame configuration equipment 800 according to another implementation of the invention.
Equipment 800 as shown in Figure 8 comprises MBSFN sub-frame configuration device 801, and it is configured at least one the DL sub-frame configuration being likely re-equipped in the DL subframe that is set to UL subframe is MBSFN subframe.
In one embodiment, MBSFN sub-frame configuration device 801 is also configured to first or the first two OFDM symbol of MBSFN subframe to be configured for the DL transmission of reference signal.
In one embodiment, equipment 800 also comprises standard UL sub-frame configuration device 802, and it is configured to the UL sub-frame configuration that can not change after reshuffling is standard UL subframe.
Fig. 9 shows according to the block diagram of the sub-frame configuration equipment 900 of another execution mode of the present invention.
Equipment 900 as shown in Figure 9 comprises DL sub-frame configuration device 901, it is configured at least one the DL subframe fixed configurations being likely re-equipped in the DL subframe that is set to UL subframe is the DL subframe for reference signal transmission, makes in the time that dynamic frame configures this at least one DL subframe can not be re-equipped and is set to UL subframe.
In one embodiment, it is the DL subframe for reference signal transmission that downlink subframe configurations device 901 is also configured to the DL subframe fixed configurations in present frame configuration, makes in the time carrying out dynamic frame configuration the DL subframe in present frame configuration can not be re-equipped and is set to UL subframe.
In one embodiment, equipment 900 also comprises DRX cycle setting device 902, it is configured to the DRX cycle of UE and wakes up the duration, making downlink subframe configurations device 901 is the UL subframe for reference signal transmission by the DL subframe fixed configurations of waking up in the duration in DRX cycle, thereby the DL subframe of the configuration that is fixed in the time that dynamic frame configures can not be re-equipped and is set to UL subframe.
In one embodiment, DRX cycle setting device 902 is also configured to DRX cycle and is set to the length of a frame or field, or the length of its integral multiple.
Should be appreciated that in equipment 700 to 900 that each device of recording is corresponding with the each step in the method 100,400 and 500 of describing with reference to figure 1, Fig. 4 and Fig. 5 respectively.Thus, above, for the operation of Fig. 1, Fig. 4 and Fig. 5 description and the device that feature is equally applicable to equipment 700 to 900 and wherein comprises, detail repeats no more.
It is also understood that equipment 700 to 900 both can realize in network element, for example base station, also can realize in terminal for example subscriber equipment (UE).In embodiments of the present invention, base station can be macrocell base stations, microcell base station, Home eNodeB or relay base station etc.UE can be various types of terminals, such as mobile phone, personal digital assistant (PDA), portable computer etc.
Although it is also understood that embodiments of the present invention, using TDD LTE agreement as example, the invention is not restricted to this communication system, but can be applied in any TDD system that causes existing UE backward compatibility issues because UL-DL reshuffles.For example, can be applied to and support with the each version of TDD LTE mutually in the system of agreement of compatibility, or in any other TDD communication system.
Equipment 700 to 900 can utilize variety of way to realize.For example, in some embodiments, can utilize software and/or firmware module to realize.In addition, also can utilize hardware module to realize.Other modes known or exploitation in the future are also feasible now, and scope of the present invention is unrestricted in this regard.
It should be noted that, the disclosed method of embodiments of the present invention can realize in the combination of software, hardware or software and hardware.Hardware components can utilize special logic to realize; Software section can be stored in memory, for example, is carried out by suitable instruction execution system (microprocessor, personal computer or large-scale computer).In some embodiments, the present invention is embodied as software, and it includes but not limited to firmware, resident software, microcode etc.
And, embodiments of the present invention can also take can from computer can with or the form of the computer program of computer-readable medium access, these media provide program code use or be combined with it for computer or any instruction execution system.For the purpose of description, computer can with or computer-readable mechanism can be any tangible device, it can comprise, storage, communication, propagation or transmission procedure to be to be used or to be combined with it by instruction execution system, device or equipment.
Medium can be electric, magnetic, light, electromagnetism, ultrared or semi-conductive system (or device or device) or propagation medium.The example of computer-readable medium comprises semiconductor or solid-state memory, tape, removable computer diskette, random access storage device (RAM), read-only memory (ROM), hard disk and CD.The example of CD comprises compact disk-read-only memory (CD-ROM), compact disk-read/write (CD-R/W) and DVD at present.
It should be noted that for embodiments of the present invention are easier to understand, description has above been omitted to be known for a person skilled in the art and may to be essential some ins and outs more specifically for the realization of embodiments of the present invention.It is in order to illustrate and to describe that specification of the present invention is provided, instead of is used for exhaustive or limits the invention to disclosed form.For those of ordinary skill in the art, many modifications and changes are all fine.
Therefore; selecting and describing execution mode is in order to explain better principle of the present invention and practical application thereof; and those of ordinary skill in the art are understood, do not departing under the prerequisite of essence of the present invention, within all modifications and modification all fall into protection scope of the present invention defined by the claims.
Claims (26)
1. a sub-frame configuration method, comprising:
Be uplink rate coupling subframe by least one downlink subframe configurations being likely re-equipped in the downlink subframe that is set to uplink sub-frames,
Wherein said uplink rate coupling subframe is transmitted in orthogonal frequency division multiplex OFDM mode, and first or the first two OFDM symbol in described uplink rate coupling subframe is not used in ul transmissions.
2. method according to claim 1, comprising:
Described first or the first two OFDM symbol are punched, so that it is not used in ul transmissions.
3. method according to claim 1, comprising:
The configuration protection period after and then described first or the first two OFDM symbol.
4. method according to claim 3, comprising:
At least one OFDM symbol after described protective time slot is configured for and carries out ul transmissions.
5. method according to claim 3, comprising:
The length of described protective time slot is configured to be less than to the length of an OFDM symbol.
6. method according to claim 1, comprising:
The uplink sub-frames that can not change after reshuffling is configured to standard uplink subframe.
7. a sub-frame configuration method, comprising:
Be multicast broadcast single frequency network MBSFN subframe by least one downlink subframe configurations being likely re-equipped in the downlink subframe that is set to uplink sub-frames.
8. method according to claim 7, comprising:
First or the first two orthogonal frequency division multiplex OFDM symbol of described MBSFN subframe are configured for to the downlink transmission of Downlink Control Information and reference signal.
9. method according to claim 7, comprising:
The uplink sub-frames that can not change after reshuffling is configured to standard uplink subframe.
10. a sub-frame configuration method, comprising:
Be the downlink subframe for reference signal transmission by least one the downlink subframe fixed configurations being likely re-equipped in the downlink subframe that is set to uplink sub-frames, make in the time that dynamic frame configures described at least one downlink subframe can not be re-equipped and be set to uplink sub-frames.
11. methods according to claim 10, also comprise:
Be the downlink subframe for reference signal transmission by the downlink subframe fixed configurations in present frame configuration, make in the time carrying out dynamic frame configuration described in downlink subframe in present frame configuration can not be re-equipped and be set to uplink sub-frames.
12. methods according to claim 10, also comprise:
The discontinuous reception DRX period of user equipment (UE) is set and wakes up the duration, make the downlink subframe in the duration waken up in described DRX cycle be fixed and be configured to the downlink subframe for reference signal transmission, thereby the described downlink subframe of the configuration that is fixed in the time that dynamic frame configures can not be re-equipped and be set to uplink sub-frames.
13. methods according to claim 12, wherein described DRX cycle is set to the length of a frame or field, or the length of its integral multiple.
14. 1 kinds of sub-frame configuration equipment, comprising:
Uplink rate coupling sub-frame configuration device, being configured at least one downlink subframe configurations being likely re-equipped in the downlink subframe that is set to uplink sub-frames is uplink rate coupling subframe, wherein said uplink rate coupling subframe is transmitted in orthogonal frequency division multiplex OFDM mode, and first or the first two OFDM symbol in described uplink rate coupling subframe is not used in ul transmissions.
15. equipment according to claim 14, wherein said uplink rate coupling sub-frame configuration device is also configured to described first or the first two OFDM symbol to punch, so that it is not used in ul transmissions.
16. equipment according to claim 14, wherein said uplink rate coupling sub-frame configuration device is also configured to the configuration protection period after and then described first or the first two OFDM symbol.
17. equipment according to claim 16, wherein said uplink rate coupling sub-frame configuration device is also configured at least one the OFDM symbol after described protective time slot to be configured for and to carry out ul transmissions.
18. equipment according to claim 16, wherein said uplink rate coupling sub-frame configuration device is also configured to the length of described protective time slot to be configured to be less than the length of an OFDM symbol.
19. equipment according to claim 14, comprising:
Standard uplink sub-frame configuration device, is configured to the uplink sub-frames that can not change after reshuffling to be configured to standard uplink subframe.
20. 1 kinds of sub-frame configuration equipment, comprising:
MBSFN sub-frame configuration device, being configured at least one downlink subframe configurations being likely re-equipped in the downlink subframe that is set to uplink sub-frames is multicast broadcast single frequency network MBSFN subframe.
21. equipment according to claim 20, wherein said MBSFN sub-frame configuration device is also configured to first or the first two orthogonal frequency division multiplex OFDM symbol of described MBSFN subframe to be configured for the downlink transmission of reference signal.
22. equipment according to claim 20, comprising:
Standard uplink sub-frame configuration device, is configured to the uplink sub-frames that can not change after reshuffling to be configured to standard uplink subframe.
23. 1 kinds of sub-frame configuration equipment, comprising:
Downlink subframe configurations device, being configured at least one the downlink subframe fixed configurations being likely re-equipped in the downlink subframe that is set to uplink sub-frames is the downlink subframe for reference signal transmission, make in the time that dynamic frame configures described at least one downlink subframe can not be re-equipped and be set to uplink sub-frames.
24. methods according to claim 23, it is the downlink subframe for reference signal transmission that wherein said downlink subframe configurations device is also configured to the downlink subframe fixed configurations in present frame configuration, make in the time carrying out dynamic frame configuration described in downlink subframe in present frame configuration can not be re-equipped and be set to uplink sub-frames.
25. equipment according to claim 23, also comprise:
DRX cycle setting device, be configured to the discontinuous reception DRX period of user equipment (UE) is set and wakes up the duration, making described downlink subframe configurations device is the downlink subframe for reference signal transmission by the downlink subframe fixed configurations of waking up in the duration in described DRX cycle, thereby the described downlink subframe of the configuration that is fixed in the time that dynamic frame configures can not be re-equipped and be set to uplink sub-frames.
26. equipment according to claim 25, wherein DRX cycle setting device is also configured to described DRX cycle and is set to the length of a frame or field, or the length of its integral multiple.
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