WO2017045554A1 - 支持低延迟无线通信的基站、ue中的方法和设备 - Google Patents
支持低延迟无线通信的基站、ue中的方法和设备 Download PDFInfo
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- WO2017045554A1 WO2017045554A1 PCT/CN2016/098268 CN2016098268W WO2017045554A1 WO 2017045554 A1 WO2017045554 A1 WO 2017045554A1 CN 2016098268 W CN2016098268 W CN 2016098268W WO 2017045554 A1 WO2017045554 A1 WO 2017045554A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
Definitions
- the present invention relates to a transmission scheme in a wireless communication system, and more particularly to a control channel method and apparatus for low latency transmission based on LTE-Long Term Evolution.
- the delay of the LTE network includes air interface delay, signal processing delay, and transmission delay between nodes. With the upgrade of the wireless access network and the core network, the transmission delay is effectively reduced. With the application of new semiconductors with higher processing speeds, signal processing delays are significantly reduced.
- a TTI Transmission Time Interval
- a subframe or a Physical Resource Block (PB) corresponds to one ms (milli-second) in time.
- An LTE subframe includes two time slots (Time Slots) - a first time slot and a second time slot, respectively.
- the PDCCH Physical Downlink Control Channel
- the LTE Release-10 system introduces an EPDCCH (Enhanced Physical Downlink Control Channel), which occupies the PRB pair from the Qth OFDM symbol to the last OFDM symbol of the PRB pair, and the Q is configured by the upper layer signaling. It is determined together with R indicated by PCFICH.
- EPDCCH Enhanced Physical Downlink Control Channel
- the HARQ Hybrid Automatic Repeat reQuest
- loopback time is 8 ms, and a small number of HARQ retransmissions will bring about tens of ms network delay. Therefore, reducing the air interface delay becomes an effective means to reduce the delay of the LTE network.
- an intuitive method is to design a short TTI (less than 1 ms) to replace the existing LTE subframe.
- the present invention provides a solution. It should be noted that, in the case of no conflict, the features in the embodiments and embodiments in the UE (User Equipment) of the present application can be applied to the base station, and vice versa. Further, the features of the embodiments and the embodiments of the present application may be combined with each other arbitrarily without conflict.
- the invention discloses a method in a base station supporting low-latency wireless communication, which comprises the following steps:
- Step A Send the first signaling.
- the first signaling is physical layer signaling, and the first signaling includes scheduling information of the second data.
- the N is a positive integer.
- the second data includes N transport block groups, the N transport block groups are respectively transmitted in the N LTE time slots, and one of the transport block groups includes G transport blocks, and the G is a positive integer.
- the first signaling is transmitted in the first LTE time slot.
- the first LTE time slot is the first time slot of the LTE subframe, or the first LTE time slot is the second time slot of the LTE subframe.
- the essence of the foregoing first information is: by designing independent control signaling for the LTE time slot, so that each LTE time slot can realize independent scheduling, and then independently transmit or receive data transmission, thereby implementing a short TTI system to reduce the delay.
- the N is 1.
- the N is 2, and the N LTE time slots belong to one LTE subframe.
- the first signaling is DCI (Downlink Control Information) for downlink scheduling (Downlink Grant).
- DCI Downlink Control Information
- the first signaling is one of DCI formats ⁇ 1, 1A, 1B, 1C, 1D, 2, 2A, 2B, 2C, 2D ⁇ .
- the first signaling is a DCI for Uplink Grant.
- the first signaling is one of DCI formats ⁇ 0, 4 ⁇ .
- the transport block is a MAC (Medium Access Control) PDU (Protocol Data Unit).
- MAC Medium Access Control
- PDU Protocol Data Unit
- the G is 1.
- the G is 2, and the G transport blocks are respectively sent by different antenna ports.
- the scheduling information includes a PRB set, and the N transport block groups are all transmitted on the PRB set.
- the scheduling information includes G modulation coding indexes, where the G modulation coding indexes are respectively used to indicate a modulation mode and a coding rate adopted by the G transport blocks in the transport block group (ie, The N transport block groups share the same G MCSs).
- the modulation and coding index is an MCS (Modulation and Coding Scheme) in LTE.
- the step A further includes the following steps:
- Step A0 Send at least one of the following:
- the second signaling indicates the number of occupied OFDM symbols of the first channel in the first LTE slot.
- the first signaling is transmitted on the first channel, and the occupied OFDM symbol number is a positive integer less than 4.
- the third signaling indicates the starting OFDM symbol of the data scheduled by the first signaling in the first LTE slot.
- the initial OFDM symbol is an OFDM symbol before the 5th OFDM symbol in the LTE slot.
- the step A further includes the following steps:
- Step A1 Send a fourth signaling, the fourth signaling assigning a first set of PRB pairs to the EPDCCH.
- the first signaling is transmitted on the first PRB pair set, the first PRB pair set includes L PRB pairs, and the L is a positive integer.
- the step A further includes the following steps:
- the first signaling is transmitted on the first set of PRB pairs, and one M-EREG occupies one LTE slot in the time domain.
- the first set of PRB pairs includes L PRB pairs, which are positive integers.
- the step A further includes the following steps:
- Step A3. Sending a sixth signaling, the sixth signaling assigning a second set of PRBs to the M-EREG.
- the first signaling is transmitted on the second PRB set, and one M-EREG occupies one LTE time slot in the time domain.
- the second set of PRBs includes J PRBs, which are positive integers.
- an RE (Resource Element) occupied by the first signaling is composed of K M-EREGs.
- K is a positive integer.
- One M-EREG is composed of a part of REs occupied by two EREGs (Enhanced Resource Element Groups), and one M-EREG occupies one LTE slot in the time domain.
- One such improved EREG consists of 9 or 8 REs.
- an EREG consists of a partial RE occupied by two M-EREGs.
- the above M-EREG design is characterized in that it can coexist with the existing EREG on the PRB, so that in addition to replacing the EREG with the M-EREG, the rest can be used in the existing search space, the PRB pair index and the M-EREG sequence number. the design of.
- the special signaling manner can be implemented, when a certain PRB pair group is simultaneously configured to the legacy EPDCCH and the first signaling, the first signaling composed of the M-EREG can coexist with the EPDCCH, and the collision probability between each other Smaller.
- the special mapping methods described here are given in detail in the subsequent description.
- the method further includes the following steps:
- Step B Transmitting or receiving the second data in the N LTE time slots according to the scheduling of the first signaling.
- the invention discloses a method in a UE supporting low-latency wireless communication, which comprises the following steps:
- the first signaling is physical layer signaling, and the first signaling includes scheduling information of the second data.
- the N is a positive integer.
- the second data includes N transport block groups, and the N transport block groups Transmitted in the N LTE time slots respectively, one of the transport block groups includes G transport blocks, and the G is a positive integer.
- the first signaling is transmitted in the first LTE time slot.
- the first LTE time slot is the first time slot of the LTE subframe, or the first LTE time slot is the second time slot of the LTE subframe.
- the step A further includes the following steps:
- the second signaling indicates the number of occupied OFDM symbols of the first channel in the first LTE slot.
- the first signaling is transmitted on the first channel, and the occupied OFDM symbol number is a positive integer less than 4.
- the third signaling indicates the starting OFDM symbol of the data scheduled by the first signaling in the first LTE slot.
- the initial OFDM symbol is an OFDM symbol before the 5th OFDM symbol in the LTE slot.
- the step A further includes the following steps:
- Step A Receive fourth signaling, the fourth signaling assigning the first set of PRB pairs to the EPDCCH.
- the first signaling is transmitted on the first PRB pair set, the first PRB pair set includes L PRB pairs, and the L is a positive integer.
- the step A further includes the following steps:
- Step A2. Receive fifth signaling, which assigns the first set of PRB pairs to the M-EREG.
- the first signaling is transmitted on the first set of PRB pairs, and one M-EREG occupies one LTE slot in the time domain.
- the first set of PRB pairs includes L PRB pairs, which are positive integers.
- the step A further includes the following steps:
- Step A3. Receive sixth signaling, which distributes the second set of PRBs to the M-EREG.
- the first signaling is transmitted on the second PRB set, and one M-EREG occupies one LTE time slot in the time domain.
- the second set of PRBs includes J PRBs, which are positive integers.
- the RE occupied by the first signaling is composed of K M-EREGs.
- K is a positive integer.
- One of the M-EREGs is composed of a part of REs occupied by two EREGs, and one of the M-EREGs occupies one LTE slot in the time domain.
- One such improved EREG consists of 9 or 8 REs.
- an EREG is partially occupied by two M-EREGs. composition.
- the method further includes the following steps:
- Step B Receive or transmit the second data in the N LTE time slots according to the scheduling of the first signaling.
- the present invention discloses a base station device supporting low-latency wireless communication, which includes:
- the first signaling is physical layer signaling, and the first signaling includes scheduling information of the second data.
- the N is a positive integer.
- the second data includes N transport block groups, the N transport block groups are respectively transmitted in the N LTE time slots, and one of the transport block groups includes G transport blocks, and the G is a positive integer.
- the first signaling is transmitted in the first LTE time slot.
- the first LTE time slot is the first time slot of the LTE subframe, or the first LTE time slot is the second time slot of the LTE subframe.
- the first module is also used in at least one of the following:
- the second signaling indicates the number of occupied OFDM symbols of the first channel in the first LTE time slot.
- the first signaling is transmitted on the first channel, and the occupied OFDM symbol number is a positive integer less than 4.
- the third signaling indicates the initial OFDM symbol of the data scheduled by the first signaling in the first LTE slot.
- the initial OFDM symbol is an OFDM symbol before the 5th OFDM symbol in the LTE slot.
- the fourth signaling is sent, and the fourth signaling allocates the first PRB pair set to the EPDCCH.
- a fifth signaling is sent, the fifth signaling assigning the first set of PRB pairs to the modified EREG.
- the first signaling is transmitted on the first set of PRB pairs, and the improved EREG occupies one LTE slot in the time domain.
- the first set of PRB pairs includes L PRB pairs, which are positive integers.
- the sixth signaling is sent, and the sixth signaling allocates the second PRB set to the improved EREG.
- the first signaling is transmitted on the second PRB set, and an improved EREG occupies one LTE slot in the time domain.
- the second set of PRBs includes J PRBs, which are positive integers.
- a second module transmitting or receiving the second data in the N LTE time slots according to the scheduling of the first signaling.
- the RE occupied by the first signaling is composed of K M-EREGs.
- K is a positive integer.
- One of the M-EREGs is composed of a part of REs occupied by two EREGs, and one of the M-EREGs occupies one LTE slot in the time domain.
- One such improved EREG consists of 9 or 8 REs.
- an EREG consists of a partial RE occupied by two M-EREGs.
- the present invention discloses a UE device supporting low-latency wireless communication, which includes:
- the first signaling is physical layer signaling, and the first signaling includes scheduling information of the second data.
- the N is a positive integer.
- the second data includes N transport block groups, the N transport block groups are respectively transmitted in the N LTE time slots, and one of the transport block groups includes G transport blocks, and the G is a positive integer.
- the first signaling is transmitted in the first LTE time slot.
- the first LTE time slot is the first time slot of the LTE subframe, or the first LTE time slot is the second time slot of the LTE subframe.
- the first module is also used in at least one of the following:
- the second signaling indicates the number of occupied OFDM symbols of the first channel in the first LTE time slot.
- the first signaling is transmitted on the first channel, and the occupied OFDM symbol number is a positive integer less than 4.
- the third signaling indicates a starting OFDM symbol of the data scheduled by the first signaling in the first LTE slot.
- the initial OFDM symbol is an OFDM symbol before the 5th OFDM symbol in the LTE slot.
- the fourth signaling allocates a first PRB pair set to the EPDCCH.
- a fifth signaling is received, the fifth signaling assigning the first set of PRB pairs to the modified EREG.
- the first signaling is transmitted on the first set of PRB pairs, and the improved EREG occupies one LTE slot in the time domain.
- the first set of PRB pairs includes L PRB pairs, which are positive integers.
- the sixth signaling is received, and the sixth signaling allocates the second PRB set to the improved EREG.
- the first signaling is transmitted on the second PRB set, and an improved EREG occupies one LTE slot in the time domain.
- the second set of PRBs includes J PRBs, which are positive integers.
- a second module receiving or transmitting the second data in the N LTE time slots according to the scheduling of the first signaling.
- the RE occupied by the first signaling is composed of K M-EREGs.
- K is a positive integer.
- One of the M-EREGs is composed of a part of REs occupied by two EREGs, and one of the M-EREGs occupies one LTE slot in the time domain.
- One of the M-EREGs consists of 9 or 8 REs.
- an EREG consists of a partial RE occupied by two M-EREGs.
- the present invention has the following technical advantages:
- control signaling is compatible with the PDCCH and EPDCCH of the existing system.
- the control signaling shares the same PRB resources with the EPDCCH of the existing system, thereby improving system spectrum utilization.
- FIG. 1 shows a downlink transmission flow chart of an embodiment based on fourth signaling according to the present invention
- FIG. 2 shows a flow chart of a downlink transmission based on an embodiment of the fifth signaling according to the present invention
- FIG. 3 is a flowchart showing a downlink transmission according to an embodiment of the sixth signaling according to the present invention.
- FIG. 4 shows an upstream transmission flow chart of an embodiment based on fourth signaling according to the present invention
- FIG. 5 is a flowchart showing an uplink transmission according to an embodiment of the fifth signaling according to the present invention.
- FIG. 6 shows an upstream transmission flow chart of an embodiment based on sixth signaling according to the present invention
- FIG. 7 shows an embodiment of the M-EREG resource mapping of the REs constituting the first signaling under the normal CP (cyclic prefix), that is, the mapping of the M-EREG to a PRB pair. a schematic diagram of a pattern
- FIG. 8 is a schematic diagram showing an embodiment of an M-EREG resource mapping of an RE constituting a first signaling under an extended CP, that is, a second pattern in which an M-EREG is mapped to a PRB pair;
- FIG. 9 is a schematic diagram showing an embodiment of an M-EREG resource mapping of an RE constituting a first signaling under a normal CP, that is, a third pattern in which an M-EREG is mapped to a PRB pair;
- FIG. 10 is a schematic diagram showing an embodiment of an M-EREG resource mapping of an RE constituting a first signaling under an extended CP, that is, a fourth pattern in which an M-EREG is mapped to a PRB pair;
- Figure 11 is a block diagram showing the structure of a processing device in a base station according to an embodiment of the present invention.
- FIG. 12 is a block diagram showing the structure of a processing device in a UE according to an embodiment of the present invention.
- Embodiment 1 illustrates a downlink transmission flow chart based on the fourth signaling, as shown in FIG.
- base station N1 is the maintenance base station of the serving cell of UE U2
- the step identified in block F1 is an optional step.
- the first signaling is transmitted in step S11.
- the first signaling is physical layer signaling, and the first signaling includes scheduling information of the second data.
- the N is a positive integer.
- the second data includes N transport block groups, the N transport block groups are respectively transmitted in the N LTE time slots, and one of the transport block groups includes G transport blocks, and the G is a positive integer.
- the first signaling is transmitted in the first LTE time slot.
- the first LTE time slot is the first time slot of the LTE subframe, or the first LTE time slot is the second time slot of the LTE subframe.
- the first signaling is one of DCI formats ⁇ 1, 1A, 1B, 1C, 1D, 2, 2A, 2B, 2C, 2D ⁇ ; or a newly designed DCI format, scheduling The transmission of the second data.
- the first signaling is received in step S21.
- step S12 For the base station N1, at least one of the following is transmitted in step S12:
- the second signaling indicates the number of occupied OFDM symbols of the first channel in the first LTE slot.
- the first signaling is transmitted on the first channel, and the occupied OFDM symbol number is a positive integer less than 4.
- the third signaling indicates the starting OFDM symbol of the data scheduled by the first signaling in the first LTE slot. Wherein the starting OFDM symbol is the fifth in the LTE slot. OFDM symbol before the OFDM symbol.
- the second signaling is PCFICH signaling of an LTE subframe to which the first LTE time slot belongs, the first LTE time slot is a first time slot of the LTE subframe, or the first LTE The slot is the second slot of the LTE subframe.
- the target receiver of the first signaling is the first UE, and the target receiver of the second signaling is the second UE and the first UE.
- the second UE is a legacy (UE) UE and the first UE is not.
- the second signaling is improved PCFICH (M-PCFICH) signaling on the second time slot of the LTE subframe to which the first LTE time slot belongs, the M-PCFICH signal
- M-PCFICH PCFICH
- the encoding and modulation mode of the existing PCFICH is used, except that the occupied resource is the first OFDM symbol of the LTE subframe to which the first LTE time slot belongs in the second time slot, and only the second time slot is indicated.
- the number of OFDM symbols occupied by a channel The number of OFDM symbols occupied by the first channel on the first time slot is indicated by the existing PCFICH.
- the third signaling is high layer signaling, and is an existing IE (Information Element) pdsch-Start-r10.
- the pdsch-Start-r10 indicates the starting OFDM symbol of the data scheduled by the first signaling in the first LTE slot, and the data of the existing EPDCCH scheduling is consistent with the starting OFDM symbol of the LTE subframe, and both The OFDM symbol preceding the 5th OFDM symbol in the LTE slot indicated by pdsch-Start-r10.
- the target receiver of the first signaling is the first UE
- the target receiver of the third signaling is the second UE and the first UE.
- the second UE is a legacy (UE) UE and the first UE is not.
- the third signaling is high layer signaling, and is a newly designed IE (Information Element) pdsch-Start-short-tti-r13.
- the pdsch-Start-short-tti-r13 represents the starting OFDM symbol of the data scheduled by the first signaling in the first LTE slot.
- the first LTE time slot is the first time slot of the LTE subframe, or the first LTE time slot is the second time slot of the LTE subframe.
- step S22 For UE U2, at least one of the following is received in step S22:
- the second signaling indicates the number of occupied OFDM symbols of the first channel in the first LTE slot.
- the first signaling is transmitted on the first channel, and the occupied OFDM symbol number is a positive integer less than 4.
- the third signaling indicates the starting OFDM symbol of the data scheduled by the first signaling in the first LTE slot.
- the initial OFDM symbol is an OFDM symbol before the 5th OFDM symbol in the LTE slot.
- the fourth signaling is transmitted in step S13, and the fourth signaling allocates the first PRB pair set to the EPDCCH.
- the first signaling is transmitted on the first PRB pair set, the first PRB pair set includes L PRB pairs, and the L is a positive integer.
- the fourth signaling is a conventional EPDCCH configuration IEEPDCCH-SetConfig-r11.
- the first PRB pair set configured by the EPDCCH-SetConfig-r11 is shared by the first signaling and the legacy EPDCCH, that is, all configuration information of the first PRB pair set that transmits the first signaling, and the PRB pair set that transmits the EPDCCH. All configuration information is the same.
- the target receiver of the first signaling is the first UE
- the target receiver of the fourth signaling is the second UE and the first UE.
- the second UE is a legacy (UE) UE and the first UE is not.
- L is a positive integer of the indication of numberPRB-Pairs-r11 in the conventional EPDCCH-SetConfig-r11, and is one of ⁇ 2, 4, 8 ⁇ .
- the fourth signaling is received in step S23.
- step S14 the second data is transmitted in the N LTE time slots according to the scheduling of the first signaling.
- step S24 the second data is received in the N LTE time slots according to the scheduling of the first signaling.
- Embodiment 2 exemplifies a downlink transmission flowchart based on the fifth signaling, as shown in FIG.
- base station N3 is the serving base station of the serving cell of UE U4, and the steps identified in block F2 are optional steps.
- the first signaling is transmitted in step S31.
- the first signaling is received in step S41.
- the second signaling indicates the number of occupied OFDM symbols of the first channel in the first LTE slot.
- the first signaling is transmitted on the first channel, and the occupied OFDM symbol number is a positive integer less than 4.
- the third signaling indicates the starting OFDM symbol of the data scheduled by the first signaling in the first LTE slot.
- the initial OFDM symbol is an OFDM symbol before the 5th OFDM symbol in the LTE slot.
- step S42 For UE U4, at least one of the following is received in step S42.
- the second signaling indicates the number of occupied OFDM symbols of the first channel in the first LTE slot.
- the first signaling is transmitted on the first channel, and the occupied OFDM symbol number is a positive integer less than 4.
- the third signaling indicates the starting OFDM symbol of the data scheduled by the first signaling in the first LTE slot.
- the initial OFDM symbol is an OFDM symbol before the 5th OFDM symbol in the LTE slot.
- the fifth signaling is transmitted in step S33, and the fifth signaling allocates the first set of PRB pairs to the M-EREG.
- the first signaling is transmitted on the first set of PRB pairs, and one M-EREG occupies one LTE slot in the time domain.
- the first set of PRB pairs includes L PRB pairs, which are positive integers. And L is one of ⁇ 2, 4, 8, 16 ⁇ .
- the fifth signaling is a newly designed IEEPDCCH-SetConfig-Short-tti-r13.
- the first PRB pair set indicated by the EPDCCH-SetConfig-Short-tti-r13 is allocated to the M-EREG, and the first PRB pair set is independent of the PRB pair set corresponding to the system transmission EPDCCH.
- EPDCCH-SetConfig-Short-tti-r13 is expressed as follows:
- the fifth signaling is received in step S43.
- step S34 the second data is transmitted in the N LTE slots according to the scheduling of the first signaling.
- step S44 the second data is received in the N LTE time slots according to the scheduling of the first signaling.
- Embodiment 3 exemplifies a downlink transmission flowchart based on the sixth signaling, as shown in FIG.
- base station N5 is the maintenance base station of the serving cell of UE U6, and the steps identified in block F3 are optional steps.
- the first signaling is transmitted in step S51.
- the first signaling is received in step S61.
- the second signaling indicates the number of occupied OFDM symbols of the first channel in the first LTE slot.
- the first signaling is transmitted on the first channel, and the occupied OFDM symbol number is a positive integer less than 4.
- the third signaling indicates the starting OFDM symbol of the data scheduled by the first signaling in the first LTE slot.
- the initial OFDM symbol is an OFDM symbol before the 5th OFDM symbol in the LTE slot.
- step S62 For UE U6, at least one of the following is received in step S62:
- the second signaling indicates the number of occupied OFDM symbols of the first channel in the first LTE slot.
- the first signaling is transmitted on the first channel, and the occupied OFDM symbol number is a positive integer less than 4.
- the third signaling indicates the starting OFDM symbol of the data scheduled by the first signaling in the first LTE slot.
- the initial OFDM symbol is an OFDM symbol before the 5th OFDM symbol in the LTE slot.
- the sixth signaling is transmitted in step S53, and the sixth signaling allocates the second PRB set to the M-EREG.
- the first signaling is transmitted on the second PRB set, and one M-EREG occupies one LTE time slot in the time domain.
- the second set of PRBs includes J PRBs, which are positive integers. And J is one of ⁇ 2, 4, 8, 16 ⁇ .
- the sixth signaling is a newly designed IEEPDCCH-PRB-Short-tti-r13.
- the second PRB set indicated by the EPDCCH-PRB-Short-tti-r13 is allocated to the M-EREG, and the second PRB set is located in the second time slot of the LTE subframe.
- EPDCCH-PRB-Short-tti-r13 is expressed as follows:
- the sixth signaling is received in step S63.
- step S54 the second data is transmitted in the N LTE time slots according to the scheduling of the first signaling.
- step S64 the second data is received in the N LTE time slots according to the scheduling of the first signaling.
- Embodiment 4 exemplifies an uplink transmission flow chart based on the fourth signaling, as shown in FIG.
- base station N7 is the serving base station of the serving cell of UE U8, and the steps identified in block F4 are optional steps.
- the first signaling is transmitted in step S71.
- the first signaling is received in step S81.
- the second signaling indicates the number of occupied OFDM symbols of the first channel in the first LTE slot.
- the first signaling is transmitted on the first channel, and the occupied OFDM symbol number is a positive integer less than 4.
- the third signaling indicates the starting OFDM symbol of the data scheduled by the first signaling in the first LTE slot.
- the initial OFDM symbol is an OFDM symbol before the 5th OFDM symbol in the LTE slot.
- step S82 For UE U8, at least one of the following is received in step S82:
- the second signaling indicates that the first channel is occupied in the first LTE time slot The number of OFDM symbols.
- the first signaling is transmitted on the first channel, and the occupied OFDM symbol number is a positive integer less than 4.
- the third signaling indicates the starting OFDM symbol of the data scheduled by the first signaling in the first LTE slot.
- the initial OFDM symbol is an OFDM symbol before the 5th OFDM symbol in the LTE slot.
- the fourth signaling is transmitted in step S73, and the fourth signaling allocates the first PRB pair set to the EPDCCH.
- the fourth signaling is received in step S83.
- step S84 the second data is transmitted in the N LTE time slots according to the scheduling of the first signaling.
- step S74 the second data is received in the N LTE time slots according to the scheduling of the first signaling.
- Embodiment 5 exemplifies an uplink transmission flowchart based on the fifth signaling, as shown in FIG.
- base station N9 is the serving base station of the serving cell of UE U10, and the steps identified in block F5 are optional steps.
- the first signaling is transmitted in step S91.
- the first signaling is received in step S101.
- the second signaling indicates the number of occupied OFDM symbols of the first channel in the first LTE slot.
- the first signaling is transmitted on the first channel, and the occupied OFDM symbol number is a positive integer less than 4.
- the third signaling indicates the starting OFDM symbol of the data scheduled by the first signaling in the first LTE slot.
- the initial OFDM symbol is an OFDM symbol before the 5th OFDM symbol in the LTE slot.
- step S102 For the UE U10, at least one of the following is received in step S102:
- the second signaling indicates the number of occupied OFDM symbols of the first channel in the first LTE slot.
- the first signaling is transmitted on the first channel, and the occupied OFDM symbol number is a positive integer less than 4.
- the third signaling indicates the starting OFDM symbol of the data scheduled by the first signaling in the first LTE slot.
- the starting OFDM symbol is the fifth OFDM in the LTE slot.
- the fifth signaling is transmitted in step S93, and the fifth signaling allocates the first set of PRB pairs to the M-EREG.
- the fifth signaling is received in step S103.
- the second data is transmitted in the N LTE time slots according to the scheduling of the first signaling.
- step S104 the second data is received in the N LTE time slots according to the scheduling of the first signaling.
- Embodiment 6 exemplifies an uplink transmission flow chart based on the sixth signaling, as shown in FIG.
- base station N11 is the maintenance base station of the serving cell of UE U12
- the step identified in block F3 is an optional step.
- the first signaling is transmitted in step S111.
- the first signaling is received in step S121.
- step S112 For the base station N11, at least one of the following is transmitted in step S112:
- the second signaling indicates the number of occupied OFDM symbols of the first channel in the first LTE slot.
- the first signaling is transmitted on the first channel, and the occupied OFDM symbol number is a positive integer less than 4.
- the third signaling indicates the starting OFDM symbol of the data scheduled by the first signaling in the first LTE slot.
- the initial OFDM symbol is an OFDM symbol before the 5th OFDM symbol in the LTE slot.
- step S122 For the UE U12, at least one of the following is received in step S122:
- the second signaling indicates the number of occupied OFDM symbols of the first channel in the first LTE slot.
- the first signaling is transmitted on the first channel, and the occupied OFDM symbol number is a positive integer less than 4.
- the third signaling indicates the starting OFDM symbol of the data scheduled by the first signaling in the first LTE slot.
- the initial OFDM symbol is an OFDM symbol before the 5th OFDM symbol in the LTE slot.
- the sixth signaling is transmitted in step S113, and the sixth signaling allocates the second PRB set to the M-EREG.
- the sixth signaling is received in step S123.
- step S124 the second data is transmitted in the N LTE time slots according to the scheduling of the first signaling.
- step S114 the second data is received in the N LTE slots according to the scheduling of the first signaling.
- Embodiment 7 shows an embodiment of the M-EREG resource mapping of the RE constituting the first signaling used by the present invention under normal CP, that is, a schematic diagram of M-EREG mapping to a first pattern in a PRB pair.
- the numerical number in the figure corresponds to the serial number of the M-EREG, such as "0" indicating that the RE at the location thereof belongs to M-EREG 0, and "1" indicates that the RE at the location thereof belongs to M-EREG 1,
- "X" indicates that the RE at its location belongs to M-EREG X (X is a positive integer from 2 to 7).
- the M-EREG is independently mapped, that is, the M-EREG0 consisting of all REs (9 REs) identified as "0" in the first time slot, and the second time M-EREG 0 consisting of all REs (9 REs) identified as "0" are independent of each other, and independently constitute the first signaling, schedule the second data, and so on, the M on the first time slot.
- - EREG X and M-EREG X on the second time slot are also independent of each other (X is a positive integer of 2 to 7).
- EREG 0 and EREG 8 occupy the M-EREG 0 in a time slot
- EREG 1 and EREG 9 occupy an M in a time slot to form M-EREG 1;
- the REs occupied by EREG 2 and EREG 10 in one slot constitute M-EREG 2;
- EREG 3 and EREG 11 occupy RE in a time slot to form M-EREG 3;
- EREG 4 and EREG 12 occupy RE in a time slot to form M-EREG 4;
- the REs occupied by EREG 5 and EREG 13 in one time slot constitute M-EREG 5;
- EREG 6 and EREG 14 occupy the M-EREG 6 in a time slot
- the REs occupied by EREG 7 and EREG 15 in one time slot constitute M-EREG 7;
- one PRB will contain 8 M-EREGs under normal CP.
- a conventional ECCE (Enhanced Control Channel Element) will contain 4 M-EREGs, then the corresponding PRB index of the ECCE pair and the M-EREG constituting the ECCE.
- Serial number except for the parameters in TS 36.211-6.8A-1 Fixed at 2, Replace with It is fixed at 4, and the rest are in the traditional Search Space mode. Here That is, it is equal to the L indicated by the fourth signaling or the fifth signaling, or J indicated by the sixth signaling.
- Embodiment 8 shows an embodiment of the M-EREG resource mapping of the REs constituting the first signaling under the extended CP, that is, a schematic diagram of mapping the M-EREG to the first pattern in a PRB pair.
- the numerical number in the figure corresponds to the serial number of the M-EREG, such as "0" indicating that the RE at the location thereof belongs to M-EREG 0, and "1" indicates that the RE at the location thereof belongs to M-EREG 1,
- "X" indicates that the RE at its location belongs to M-EREG X (X is a positive integer from 2 to 7).
- the M-EREG is independently mapped, that is, the M-EREG0 consisting of all REs (8 REs) identified as "0" in the first time slot, and the second time M-EREG 0 consisting of all REs (0 REs) identified as "0" are independent of each other, and independently constitute the first signaling, scheduling the second data, and so on, M on the first time slot - EREG X and M-EREG X on the second time slot are also independent of each other (X is a positive integer of 2 to 7).
- EREG 0 and EREG 8 occupy the M-EREG 0 in a time slot
- EREG 1 and EREG 9 occupy an M in a time slot to form M-EREG 1;
- the REs occupied by EREG 2 and EREG 10 in one slot constitute M-EREG 2;
- EREG 3 and EREG 11 occupy RE in a time slot to form M-EREG 3;
- EREG 4 and EREG 12 occupy RE in a time slot to form M-EREG 4;
- the REs occupied by EREG 5 and EREG 13 in one time slot constitute M-EREG 5;
- EREG 6 and EREG 14 occupy the M-EREG 6 in a time slot
- the REs occupied by EREG 7 and EREG 15 in one time slot constitute M-EREG 7;
- one PRB will contain 8 M-EREGs under the extended CP.
- a conventional ECCE (Enhanced Control Channel Element) will contain 4 M-EREGs, then the corresponding PRB index of the ECCE pair and the M-EREG constituting the ECCE.
- Serial number except for the parameters in TS 36.211-6.8A-1 Fixed at 2, Replace with It is fixed at 4, and the rest are in the traditional Search Space mode. Here That is, it is equal to the L indicated by the fourth signaling or the fifth signaling, or J indicated by the sixth signaling.
- Embodiment 9 shows an embodiment of the M-EREG resource mapping of the REs constituting the first signaling under the normal CP, that is, a schematic diagram of the M-EREG mapping to the first pattern in a PRB pair.
- the numerical number in the figure corresponds to the serial number of the M-EREG, such as "0" indicating that the RE at the location thereof belongs to M-EREG 0, and "1" indicates that the RE at the location thereof belongs to M-EREG 1,
- "X" indicates that the RE at its location belongs to M-EREG X (X is a positive integer from 2 to 7).
- the M-EREG is independently mapped, that is, the M-EREG0 consisting of all REs (9 REs) identified as "0" in the first time slot, and the second time M-EREG 0 consisting of all REs (9 REs) identified as "0" are independent of each other, and independently constitute the first signaling, schedule the second data, and so on, the M on the first time slot.
- - EREG X and M-EREG X on the second time slot are also independent of each other (X is a positive integer of 2 to 7).
- EREG 0 and EREG 12 occupying M in one slot constitute M-EREG 0;
- EREG 1 and EREG 13 occupy an M in a time slot to form M-EREG 1;
- EREG 4 and EREG 8 occupying M-EREG 4 in a time slot
- EREG 5 and EREG 9 occupy RE in a time slot to form M-EREG 5;
- EREG 6 and EREG 10 occupy RE in a time slot to form M-EREG 6;
- the REs occupied by EREG 7 and EREG 11 in one time slot constitute M-EREG 7;
- one PRB will contain 8 M-EREGs under normal CP.
- a conventional ECCE (Enhanced Control Channel Element) will contain 4 M-EREGs, then the corresponding PRB index of the ECCE pair and the M-EREG constituting the ECCE.
- Serial number except for the parameters in TS 36.211-6.8A-1 Fixed at 2, Replace with It is fixed at 4, and the rest are in the traditional Search Space mode. Here That is, it is equal to L indicated by the fourth signaling or the fifth signaling, or J indicated by the sixth signaling.
- Embodiment 10 shows an embodiment of the M-EREG resource mapping of the REs constituting the first signaling under the extended CP, that is, a schematic diagram of mapping the M-EREG to the first pattern in a PRB pair.
- the numerical number in the figure corresponds to the serial number of the M-EREG.
- "0" indicates that the RE at the location thereof belongs to M-EREG 0
- "1" indicates that the RE at the location thereof belongs to M-EREG1.
- "X" indicates that the RE at its location belongs to M-EREG X (X is a positive integer from 2 to 7).
- the M-EREG is independently mapped, that is, the M-EREG0 consisting of all REs (8 REs) identified as "0" in the first time slot, and the second time M-EREG 0 consisting of all REs (0 REs) identified as "0" are independent of each other, and independently constitute the first signaling, scheduling the second data, and so on, M on the first time slot - EREG X and M-EREG X on the second time slot are also independent of each other (X is a positive integer of 2 to 7).
- EREG 0 and EREG 12 occupying M in one slot constitute M-EREG 0;
- EREG 1 and EREG 13 occupy an M in a time slot to form M-EREG 1;
- EREG 4 and EREG 8 occupying M-EREG 4 in a time slot
- EREG 5 and EREG 9 occupy RE in a time slot to form M-EREG 5;
- EREG 6 and EREG 10 occupy RE in a time slot to form M-EREG 6;
- the REs occupied by EREG 7 and EREG 11 in one time slot constitute M-EREG 7;
- one PRB will contain 8 M-EREGs under the extended CP.
- a conventional ECCE (Enhanced Control Channel Element) will contain 4 M-EREGs, then the corresponding PRB index of the ECCE pair and the M-EREG constituting the ECCE.
- Serial number except for the parameters in TS 36.211-6.8A-1 Fixed at 2, Replace with It is fixed at 4, and the rest are in the traditional Search Space mode. Here That is, it is equal to the L indicated by the fourth signaling or the fifth signaling, or J indicated by the sixth signaling.
- Embodiment 11 shows a structural block diagram of a processing device in a base station according to an embodiment of the present invention; as shown in FIG. In FIG. 11, the base station processing apparatus 200 is mainly composed of a first module 201 and a second module 202.
- the first module 201 sends the first signaling.
- the first signaling is physical layer signaling, and the first signaling includes scheduling information of the second data.
- the N is a positive integer.
- the second data includes N transport block groups, the N transport block groups are respectively transmitted in the N LTE time slots, and one of the transport block groups includes G transport blocks, and the G is a positive integer.
- the first signaling is transmitted in the first LTE time slot.
- the first LTE time slot is the first time slot of the LTE subframe, or the first LTE time slot is the second time slot of the LTE subframe.
- the first module is also used in at least one of the following:
- the second signaling indicates the number of occupied OFDM symbols of the first channel in the first LTE time slot.
- the first signaling is transmitted on the first channel, and the occupied OFDM symbol number is a positive integer less than 4.
- the third signaling indicates the initial OFDM symbol of the data scheduled by the first signaling in the first LTE slot.
- the initial OFDM symbol is an OFDM symbol before the 5th OFDM symbol in the LTE slot.
- the fourth signaling is sent, and the fourth signaling allocates the first PRB pair set to the EPDCCH.
- a fifth signaling is sent, the fifth signaling assigning the first set of PRB pairs to the modified EREG.
- the first signaling is transmitted on the first set of PRB pairs, and the improved EREG occupies one LTE slot in the time domain.
- the first set of PRB pairs includes L PRB pairs, which are positive integers.
- the sixth signaling is sent, and the sixth signaling allocates the second PRB set to the improved EREG.
- the first signaling is transmitted on the second PRB set, and an improved EREG occupies one LTE slot in the time domain.
- the second set of PRBs includes J PRBs, which are positive integers.
- the second module 202 sends or receives the second data in the N LTE time slots according to the scheduling of the first signaling.
- Embodiment 12 shows a structural block diagram of a processing device in a UE according to an embodiment of the present invention; as shown in FIG.
- the UE processing apparatus 300 is mainly composed of a first unit 301, a second unit 302, a third module, a fourth module, a fifth module, and a sixth module.
- the first unit 301 receives the first signaling.
- the first signaling is physical layer signaling, and the first signaling includes scheduling information of the second data.
- the N is 1 or 2.
- the second data includes N transport block groups, the N transport block groups are respectively transmitted in the N LTE time slots, and one of the transport block groups includes G transport blocks, and the G is a positive integer.
- the first signaling is transmitted in the first LTE time slot.
- the first LTE time slot is the first time slot of the LTE subframe, or the first LTE time slot is the second time slot of the LTE subframe.
- the first module is also used in at least one of the following:
- the second signaling indicates the number of occupied OFDM symbols of the first channel in the first LTE time slot.
- the first signaling is transmitted on the first channel, and the occupied OFDM symbol number is a positive integer less than 4.
- the third signaling indicates a starting OFDM symbol of the data scheduled by the first signaling in the first LTE slot.
- the initial OFDM symbol is an OFDM symbol before the 5th OFDM symbol in the LTE slot.
- the fourth signaling allocates a first PRB pair set to the EPDCCH.
- a fifth signaling is received, the fifth signaling assigning the first set of PRB pairs to the modified EREG.
- the first signaling is transmitted on the first set of PRB pairs, and the improved EREG occupies one LTE slot in the time domain.
- the first set of PRB pairs includes L PRB pairs, which are positive integers.
- the sixth signaling is received, and the sixth signaling allocates the second PRB set to the improved EREG.
- the first signaling is transmitted on the second PRB set, and an improved EREG occupies one LTE slot in the time domain.
- the second set of PRBs includes J PRBs, which are positive integers.
- the second unit 302 is configured to receive or send the second data in the N LTE time slots according to the scheduling of the first signaling.
- each module unit in the above embodiment may be implemented in hardware form or in the form of a software function module.
- the application is not limited to any specific combination of software and hardware.
- the UE in the present invention includes, but is not limited to, a wireless communication device such as a mobile phone, a tablet computer, a notebook, a network card, and an in-vehicle communication device.
- the base station in the present invention includes, but is not limited to, a macro communication base station, a micro cell base station, a home base station, a relay base station, and the like.
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Abstract
本发明公开了支持低延迟无线通信的基站、UE中的方法和设备。基站发送第一信令。其中,第一信令是物理层信令,第一信令中包括第二数据的调度信息。所述N是正整数。第二数据包括N个传输块组,所述N个传输块组分别在所述N个LTE时隙中传输,一个所述传输块组中包括G个传输块,所述G是正整数。第一信令在第一LTE时隙中传输。第一LTE时隙是LTE子帧的第一时隙,或者第一LTE时隙是LTE子帧的第二时隙。本发明能够通过设计的M-EREG及其对应的资源映射方式,使由M-EREG组成的第一信令与现有LTE系统兼容,进而保证低延迟无线通信的性能增益。
Description
本发明涉及无线通信系统中的传输方案,特别是涉及基于长期演进(LTE-Long Term Evolution)的低延迟传输的控制信道方法和装置。
在3GPP(3rd Generation Partner Project,第三代合作伙伴项目)RAN(Radio Access Network,无线接入网)#63次全会上,降低LTE网络的延迟这一课题被讨论。LTE网络的延迟包括空口延迟,信号处理延时,节点之间的传输延时等。随着无线接入网和核心网的升级,传输延时被有效降低了。随着具备更高处理速度的新的半导体的应用,信号处理延时被显著降低了。
LTE中,TTI(Transmission Time Interval,传输时间间隔)或者子帧或者PRB(Physical Resource Block)对(Pair)在时间上对应一个ms(milli-second,毫秒)。一个LTE子帧包括两个时隙(Time Slot)-分别是第一时隙和第二时隙。PDCCH(Physical Downlink Control Channel,物理下行控制信道)占用PRB对的前R个OFDM(Orthogonal Frequency Division Multiplexing,正交频分复用)符号,所述R是小于5的正整数,所述R由PCFICH(Physical Control Format Indicator Channel,物理控制格式指示信道)配置。LTE Release-10系统引入了EPDCCH(Enhanced Physical Downlink Control Channel,增强的物理下行控制信道),其占用PRB对自第Q个OFDM符号至该PRB对的最后一个OFDM符号,所述Q由高层信令和PCFICH指示的R共同决定。对于FDD(Frequency Division Duplex,频分双工)LTE,HARQ(Hybrid Automatic Repeat reQuest,混合自动重传请求)回环时间是8ms,少量的HARQ重传将带来数十ms的网络延时。因此降低空口延时成为降低LTE网络延时的有效手段。为了降低空口延时,一个直观的方法是设计短TTI(小于1ms)来替代现有的LTE子帧。
对于较短TTI,一个需要研究的问题是如何为其设计对应的控制信
道,以实现在较短的TTI上调度数据的传输。传统的PDCCH只在每一个子帧的第一时隙存在,且调度的数据覆盖整个子帧的两个时隙,而EPDCCH通常会覆盖整个子帧的两个时隙。因此在保证与现有系统兼容的条件下,如何为较短的TTI设计独立的控制信令,以实现其独立的数据传输,将会是低延迟传输需要解决的问题之一。
针对上述问题,本发明提供了解决方案。需要说明的是,在不冲突的情况下,本申请的UE(User Equipment,用户设备)中的实施例和实施例中的特征可以应用到基站中,反之亦然。进一步的,在不冲突的情况下,本申请的实施例和实施例中的特征可以任意相互组合。
发明内容
针对短TTI中的控制信令设计方案,一个直观的方法是将现有的PDCCH用于两个时隙的调度。然而发明人通过研究发现,上述直观的方法会导致调度灵活性的缺失,进而失去了短TTI系统的低延时的优点。
本发明中的解决方案充分考虑了上述问题。
本发明公开了一种支持低延迟无线通信的基站中的方法,其中,包括如下步骤:
-步骤A.发送第一信令。
其中,第一信令是物理层信令,第一信令中包括第二数据的调度信息。所述N是正整数。第二数据包括N个传输块组,所述N个传输块组分别在所述N个LTE时隙中传输,一个所述传输块组中包括G个传输块,所述G是正整数。第一信令在第一LTE时隙中传输。第一LTE时隙是LTE子帧的第一时隙,或者第一LTE时隙是LTE子帧的第二时隙。
上述第一信息的本质是:通过为LTE时隙设计独立的控制信令,以实现每个LTE时隙可以实现独立的调度,进而独立的发送或接收数据传输,来实现短TTI系统降低延时的初衷,以及保证其调度的灵活性。
作为一个实施例,所述N为1。
作为一个实施例,所述N为2,所述N个LTE时隙属于一个LTE子帧。
作为一个实施例,第一信令是用于下行调度(Downlink Grant)的DCI(Downlink Control Information,下行控制信息)。作为上述实施
例的一个子实施例,第一信令是DCI格式{1,1A,1B,1C,1D,2,2A,2B,2C,2D}中的一种。
作为一个实施例,第一信令是用于上行调度(Uplink Grant)的DCI。作为上述实施例的一个子实施例,第一信令是DCI格式{0,4}中的一种。
作为一个实施例,所述传输块是MAC(Medium Access Control,媒体接入控制)PDU(Protocol Data Unit,协议数据单元)。
作为一个实施例,所述G为1。
作为一个实施例,所述G为2,所述G个传输块分别由不同的天线端口发送。
作为一个实施例,所述调度信息包括PRB集合,所述N个传输块组都在所述PRB集合上传输。
作为一个实施例,所述调度信息包括G个调制编码索引,所述G个调制编码索引分别用于指示所述传输块组中的所述G个传输块所采用的调制方式和编码速率(即所述N个传输块组共享相同的G个MCS)。作为上述实施例的一个子实施例,所述调制编码索引是LTE中的MCS(Modulation and Coding Scheme,调制编码方案)。
具体的,根据本发明的一个方面,所述步骤A还包括如下步骤:
-步骤A0.发送以下至少之一:
-第二信令:第二信令指示第一信道在第一LTE时隙中的所占用的OFDM符号数。其中,第一信令在第一信道上传输,所述所占用的OFDM符号数是小于4的正整数。
-第三信令:第三信令指示第一信令所调度的数据在第一LTE时隙中的起始OFDM符号。其中,所述起始OFDM符号是LTE时隙中的第5个OFDM符号之前的OFDM符号。
具体的,根据本发明的一个方面,所述步骤A还包括如下步骤:
-步骤A1.发送第四信令,第四信令将第一PRB对集合分配给EPDCCH。
其中,第一信令在第一PRB对集合上传输,第一PRB对集合包括L个PRB对,所述L是正整数。
具体的,根据本发明的一个方面,所述步骤A还包括如下步骤:
-步骤A2.发送第五信令,第五信令将第一PRB对集合分配给
M-EREG(Modified Enhanced Resource Element Group,改进的增强资源单元组)。
其中,第一信令在第一PRB对集合上传输,一个M-EREG在时域上占用一个LTE时隙。第一PRB对集合包括L个PRB对,所述L是正整数。
具体的,根据本发明的一个方面,所述步骤A还包括如下步骤:
-步骤A3.发送第六信令,第六信令将第二PRB集合分配给M-EREG。
其中,第一信令在第二PRB集合上传输,一个M-EREG在时域上占用一个LTE时隙。第二PRB集合包括J个PRB,所述J是正整数。
具体的,根据本发明的一个方面,第一信令占用的RE(Resource Element,资源单元)由K个M-EREG组成。其中,所述K为正整数。一个所述M-EREG由两个EREG(Enhanced Resource Element Group,增强资源单元组)各自所占用的部分RE所组成,一个所述M-EREG在时域上占用一个LTE时隙。一个所述改进的EREG由9或者8个RE组成。
作为一个实施例,一个EREG由两个M-EREG各自所占用的部分RE组成。
上述M-EREG的设计,其特点在于其可与现有的EREG在PRB上共存,从而除了将EREG替换成M-EREG,其余可沿用现有的搜索空间中,PRB对索引及M-EREG序号的设计。且通过特殊的映射方式,可以实现当某一PRB对组被同时配置给legacy的EPDCCH以及第一信令时,由M-EREG组成的第一信令可以和EPDCCH共存,且彼此间的碰撞概率较小。这里所述的特殊的映射方式在后续描述中会详细给出。
具体的,根据本发明的一个方面,还包括如下步骤:
-步骤B.根据第一信令的调度,在所述N个LTE时隙中发送或者接收第二数据。
本发明公开了一种支持低延迟无线通信的UE中的方法,其中,包括如下步骤:
-步骤A.接收第一信令。
其中,第一信令是物理层信令,第一信令中包括第二数据的调度信息。所述N是正整数。第二数据包括N个传输块组,所述N个传输块组
分别在所述N个LTE时隙中传输,一个所述传输块组中包括G个传输块,所述G是正整数。第一信令在第一LTE时隙中传输。第一LTE时隙是LTE子帧的第一时隙,或者第一LTE时隙是LTE子帧的第二时隙。
具体的,根据本发明的一个方面,所述步骤A还包括如下步骤:
-步骤A0.接收以下至少之一:
-第二信令:第二信令指示第一信道在第一LTE时隙中的所占用的OFDM符号数。其中,第一信令在第一信道上传输,所述所占用的OFDM符号数是小于4的正整数。
-第三信令:第三信令指示第一信令所调度的数据在第一LTE时隙中的起始OFDM符号。其中,所述起始OFDM符号是LTE时隙中的第5个OFDM符号之前的OFDM符号。
具体的,根据本发明的一个方面,所述步骤A还包括如下步骤:
-步骤A1.接收第四信令,第四信令将第一PRB对集合分配给EPDCCH。
其中,第一信令在第一PRB对集合上传输,第一PRB对集合包括L个PRB对,所述L是正整数。
具体的,根据本发明的一个方面,所述步骤A还包括如下步骤:
-步骤A2.接收第五信令,第五信令将第一PRB对集合分配给M-EREG。
其中,第一信令在第一PRB对集合上传输,一个M-EREG在时域上占用一个LTE时隙。第一PRB对集合包括L个PRB对,所述L是正整数。
具体的,根据本发明的一个方面,所述步骤A还包括如下步骤:
-步骤A3.接收第六信令,第六信令将第二PRB集合分配给M-EREG。
其中,第一信令在第二PRB集合上传输,一个M-EREG在时域上占用一个LTE时隙。第二PRB集合包括J个PRB,所述J是正整数。
具体的,根据本发明的一个方面,第一信令占用的RE由K个M-EREG组成。其中,所述K为正整数。一个所述M-EREG由两个EREG各自所占用的部分RE所组成,一个所述M-EREG在时域上占用一个LTE时隙。一个所述改进的EREG由9或者8个RE组成。
作为一个实施例,一个EREG由两个M-EREG各自所占用的部分RE
组成。
具体的,根据本发明的一个方面,还包括如下步骤:
-步骤B.根据第一信令的调度,在所述N个LTE时隙中接收或者发送第二数据。
本发明公开了一种支持低延迟无线通信的基站设备,其包括:
-第一模块:用于发送第一信令。
其中,第一信令是物理层信令,第一信令中包括第二数据的调度信息。所述N是正整数。第二数据包括N个传输块组,所述N个传输块组分别在所述N个LTE时隙中传输,一个所述传输块组中包括G个传输块,所述G是正整数。第一信令在第一LTE时隙中传输。第一LTE时隙是LTE子帧的第一时隙,或者第一LTE时隙是LTE子帧的第二时隙。
此外,第一模块还用于以下至少之一:
发送第二信令:第二信令指示第一信道在第一LTE时隙中的所占用的OFDM符号数。其中,第一信令在第一信道上传输,所述所占用的OFDM符号数是小于4的正整数。
发送第三信令:第三信令指示第一信令所调度的数据在第一LTE时隙中的起始OFDM符号。其中,所述起始OFDM符号是LTE时隙中的第5个OFDM符号之前的OFDM符号。
发送第四信令,第四信令将第一PRB对集合分配给EPDCCH。
发送第五信令,第五信令将第一PRB对集合分配给改进的EREG。其中,第一信令在第一PRB对集合上传输,一个改进的EREG在时域上占用一个LTE时隙。第一PRB对集合包括L个PRB对,所述L是正整数。
发送第六信令,第六信令将第二PRB集合分配给改进的EREG。其中,第一信令在第二PRB集合上传输,一个改进的EREG在时域上占用一个LTE时隙。第二PRB集合包括J个PRB,所述J是正整数。
-第二模块:根据第一信令的调度,在所述N个LTE时隙中发送或者接收第二数据。
具体的,根据本发明的一个方面,第一信令占用的RE由K个M-EREG组成。其中,所述K为正整数。一个所述M-EREG由两个EREG各自所占用的部分RE所组成,一个所述M-EREG在时域上占用一个LTE时隙。一个所述改进的EREG由9或者8个RE组成。
作为一个实施例,一个EREG由两个M-EREG各自所占用的部分RE组成。
本发明公开了一种支持低延迟无线通信的UE设备,其包括:
-第一模块:用于接收第一信令。
其中,第一信令是物理层信令,第一信令中包括第二数据的调度信息。所述N是正整数。第二数据包括N个传输块组,所述N个传输块组分别在所述N个LTE时隙中传输,一个所述传输块组中包括G个传输块,所述G是正整数。第一信令在第一LTE时隙中传输。第一LTE时隙是LTE子帧的第一时隙,或者第一LTE时隙是LTE子帧的第二时隙。
-此外,第一模块还用于以下至少之一:
接收第二信令:第二信令指示第一信道在第一LTE时隙中的所占用的OFDM符号数。其中,第一信令在第一信道上传输,所述所占用的OFDM符号数是小于4的正整数。
接收第三信令:第三信令指示第一信令所调度的数据在第一LTE时隙中的起始OFDM符号。其中,所述起始OFDM符号是LTE时隙中的第5个OFDM符号之前的OFDM符号。
接收第四信令,第四信令将第一PRB对集合分配给EPDCCH。
接收第五信令,第五信令将第一PRB对集合分配给改进的EREG。其中,第一信令在第一PRB对集合上传输,一个改进的EREG在时域上占用一个LTE时隙。第一PRB对集合包括L个PRB对,所述L是正整数。
接收第六信令,第六信令将第二PRB集合分配给改进的EREG。其中,第一信令在第二PRB集合上传输,一个改进的EREG在时域上占用一个LTE时隙。第二PRB集合包括J个PRB,所述J是正整数。
-第二模块:根据第一信令的调度,在所述N个LTE时隙中接收或者发送第二数据。
具体的,根据本发明的一个方面,第一信令占用的RE由K个M-EREG组成。其中,所述K为正整数。一个所述M-EREG由两个EREG各自所占用的部分RE所组成,一个所述M-EREG在时域上占用一个LTE时隙。一个所述M-EREG由9或者8个RE组成。
作为一个实施例,一个EREG由两个M-EREG各自所占用的部分RE组成。
相比现有公开技术,本发明具有如下技术优势:
-.为短TTI场景设计独立的控制信令,以保证基于每个短TTI的实施动态调度
-.所述控制信令与现有系统的PDCCH及EPDCCH可以相互兼容
-.所述控制信令与现有系统的EPDCCH共享相同的PRB资源,提高系统频谱利用率
通过阅读参照以下附图所作的对非限制性实施例所作的详细描述,本发明的其它特征、目的和优点将会变得更加明显:
图1示出了根据本发明的一个基于第四信令的实施例的下行传输流程图;
图2示出了根据本发明的一个基于第五信令的实施例的下行传输流程图;
图3示出了根据本发明的一个基于第六信令的实施例的下行传输流程图;
图4示出了根据本发明的一个基于第四信令的实施例的上行传输流程图;
图5示出了根据本发明的一个基于第五信令的实施例的上行传输流程图;
图6示出了根据本发明的一个基于第六信令的实施例的上行传输流程图;
图7示出了本发明在正常CP(cyclic Prefix,循环前缀)下,组成第一信令所占用RE的M-EREG资源映射的一个实施例,即M-EREG映射到一个PRB对中的第一图案的示意图;
图8示出了本发明在扩展CP下,组成第一信令所占用RE的M-EREG资源映射的一个实施例,即M-EREG映射到一个PRB对中的第二图案的示意图;
图9示出了本发明在正常CP下,组成第一信令所占用RE的M-EREG资源映射的一个实施例,即M-EREG映射到一个PRB对中的第三图案的示意图;
图10示出了本发明在扩展CP下,组成第一信令所占用RE的M-EREG资源映射的一个实施例,即M-EREG映射到一个PRB对中的第四图案的示意图;
图11示出了根据本发明的一个实施例的基站中的处理装置的结构框图;
图12示出了根据本发明的一个实施例的UE中的处理装置的结构框图。
下文将结合附图对本发明的技术方案作进一步详细说明,需要说明的是,在不冲突的情况下,本申请的实施例和实施例中的特征可以任意相互组合。
实施例1
实施例1示例了基于第四信令的下行传输流程图,如附图1所示。附图1中,基站N1是UE U2的服务小区的维持基站,方框F1中标识的步骤是可选步骤。
对于基站N1,在步骤S11中发送第一信令。
其中,第一信令是物理层信令,第一信令中包括第二数据的调度信息。所述N是正整数。第二数据包括N个传输块组,所述N个传输块组分别在所述N个LTE时隙中传输,一个所述传输块组中包括G个传输块,所述G是正整数。第一信令在第一LTE时隙中传输。第一LTE时隙是LTE子帧的第一时隙,或者第一LTE时隙是LTE子帧的第二时隙。
作为实施例1的子实施例,第一信令是DCI格式{1,1A,1B,1C,1D,2,2A,2B,2C,2D}中的一种;或新设计的DCI格式,调度第二数据的传输。
对于UE U2,在步骤S21中接收第一信令。
对于基站N1,在步骤S12中发送以下至少之一:
-第二信令:第二信令指示第一信道在第一LTE时隙中的所占用的OFDM符号数。其中,第一信令在第一信道上传输,所述所占用的OFDM符号数是小于4的正整数。
-第三信令:第三信令指示第一信令所调度的数据在第一LTE时隙中的起始OFDM符号。其中,所述起始OFDM符号是LTE时隙中的第5个
OFDM符号之前的OFDM符号。
作为实施例1的子实施例,所述第二信令是第一LTE时隙所属的LTE子帧的PCFICH信令,第一LTE时隙是LTE子帧的第一时隙,或者第一LTE时隙是LTE子帧的第二时隙。并且,第一信令的目标接收者是第一UE,第二信令的目标接收者是第二UE和第一UE。其中第二UE是传统(Legacy)UE,而第一UE不是。
作为实施例1的子实施例,所述第二信令是第一LTE时隙所属的LTE子帧在第二时隙上的改进的PCFICH(M-PCFICH)信令,所述M-PCFICH信令沿用现有PCFICH的编码及调制方式,只是其占用的资源为第一LTE时隙所属的LTE子帧在第二时隙上的第一个OFDM符号,且仅指示第二时隙上的第一信道所占用的OFDM符号数。而第一时隙上的第一信道所占用的OFDM符号数由现有的PCFICH指示。
作为实施例1的子实施例,所述第三信令是高层信令,且为现有的IE(Information Element)pdsch-Start-r10。所述pdsch-Start-r10表示第一信令所调度的数据在第一LTE时隙中的起始OFDM符号,与现有EPDCCH调度的数据在LTE子帧的起始OFDM符号一致,且均为pdsch-Start-r10指示的LTE时隙中的第5个OFDM符号之前的OFDM符号。并且,第一信令的目标接收者是第一UE,第三信令的目标接收者是第二UE和第一UE。其中第二UE是传统(Legacy)UE,而第一UE不是。
作为实施例1的子实施例,所述第三信令是高层信令,且为新设计的IE(Information Element,信息单元)pdsch-Start-short-tti-r13。所述pdsch-Start-short-tti-r13表示第一信令所调度的数据在第一LTE时隙中的起始OFDM符号。其中,所述第一LTE时隙是LTE子帧的第一时隙,或者第一LTE时隙是LTE子帧的第二时隙。
对于UE U2,在步骤S22中接收以下至少之一:
-第二信令:第二信令指示第一信道在第一LTE时隙中的所占用的OFDM符号数。其中,第一信令在第一信道上传输,所述所占用的OFDM符号数是小于4的正整数。
-第三信令:第三信令指示第一信令所调度的数据在第一LTE时隙中的起始OFDM符号。其中,所述起始OFDM符号是LTE时隙中的第5个OFDM符号之前的OFDM符号。
对于基站N1,在步骤S13中发送第四信令,第四信令将第一PRB对集合分配给EPDCCH。
其中,第一信令在第一PRB对集合上传输,第一PRB对集合包括L个PRB对,所述L是正整数。
作为实施例1的子实施例,第四信令为传统的EPDCCH配置IEEPDCCH-SetConfig-r11。所述EPDCCH-SetConfig-r11配置的第一PRB对集合被第一信令和传统的EPDCCH共享,即传输第一信令的第一PRB对集合的所有配置信息,与传输EPDCCH的PRB对集合的所有配置信息一样。并且,第一信令的目标接收者是第一UE,第四信令的目标接收者是第二UE和第一UE。其中第二UE是传统(Legacy)UE,而第一UE不是。并且L为传统EPDCCH-SetConfig-r11中numberPRB-Pairs-r11的指示的正整数,为{2,4,8}中之一。
对于UE U2,在步骤S23中接收第四信令。
对于基站N1,在步骤S14中,根据第一信令的调度,在所述N个LTE时隙中发送第二数据。
对于UE U2,在步骤S24中,根据第一信令的调度,在所述N个LTE时隙中接收第二数据。
实施例2
实施例2示例了基于第五信令的下行传输流程图,如附图2所示。附图2中,基站N3是UE U4的服务小区的维持基站,方框F2中标识的步骤是可选步骤。
对于基站N3,在步骤S31中发送第一信令。
对于UE U4,在步骤S41中接收第一信令。
对于基站N3,在步骤S32中发送以下至少之一:
-第二信令:第二信令指示第一信道在第一LTE时隙中的所占用的OFDM符号数。其中,第一信令在第一信道上传输,所述所占用的OFDM符号数是小于4的正整数。
-第三信令:第三信令指示第一信令所调度的数据在第一LTE时隙中的起始OFDM符号。其中,所述起始OFDM符号是LTE时隙中的第5个OFDM符号之前的OFDM符号。
对于UE U4,在步骤S42中接收以下至少之一。
-第二信令:第二信令指示第一信道在第一LTE时隙中的所占用的OFDM符号数。其中,第一信令在第一信道上传输,所述所占用的OFDM符号数是小于4的正整数。
-第三信令:第三信令指示第一信令所调度的数据在第一LTE时隙中的起始OFDM符号。其中,所述起始OFDM符号是LTE时隙中的第5个OFDM符号之前的OFDM符号。
对于基站N3,在步骤S33中发送第五信令,第五信令将第一PRB对集合分配给M-EREG。
其中,第一信令在第一PRB对集合上传输,一个M-EREG在时域上占用一个LTE时隙。第一PRB对集合包括L个PRB对,所述L是正整数。并且L为{2,4,8,16}中之一。
作为实施例2的子实施例,第五信令为新设计的IEEPDCCH-SetConfig-Short-tti-r13。所述EPDCCH-SetConfig-Short-tti-r13指示的第一PRB对集合分配给M-EREG,且所述第一PRB对集合与系统传输EPDCCH对应的PRB对集合独立。具体的,EPDCCH-SetConfig-Short-tti-r13表示如下:
对于UE U4,在步骤S43中接收第五信令。
对于基站N3,在步骤S34中,根据第一信令的调度,在所述N个LTE时隙中发送第二数据。
对于UE U4,在步骤S44中,根据第一信令的调度,在所述N个LTE时隙中接收第二数据。
实施例3
实施例3示例了基于第六信令的下行传输流程图,如附图3所示。附图3中,基站N5是UE U6的服务小区的维持基站,方框F3中标识的步骤是可选步骤。
对于基站N5,在步骤S51中发送第一信令。
对于UE U6,在步骤S61中接收第一信令。
对于基站N5,在步骤S52中发送以下至少之一:
-第二信令:第二信令指示第一信道在第一LTE时隙中的所占用的OFDM符号数。其中,第一信令在第一信道上传输,所述所占用的OFDM符号数是小于4的正整数。
-第三信令:第三信令指示第一信令所调度的数据在第一LTE时隙中的起始OFDM符号。其中,所述起始OFDM符号是LTE时隙中的第5个OFDM符号之前的OFDM符号。
对于UE U6,在步骤S62中接收以下至少之一:
-第二信令:第二信令指示第一信道在第一LTE时隙中的所占用的OFDM符号数。其中,第一信令在第一信道上传输,所述所占用的OFDM符号数是小于4的正整数。
-第三信令:第三信令指示第一信令所调度的数据在第一LTE时隙中的起始OFDM符号。其中,所述起始OFDM符号是LTE时隙中的第5个OFDM符号之前的OFDM符号。
对于基站N5,在步骤S53中发送第六信令,第六信令将第二PRB集合分配给M-EREG。
其中,第一信令在第二PRB集合上传输,一个M-EREG在时域上占用一个LTE时隙。第二PRB集合包括J个PRB,所述J是正整数。并且J为{2,4,8,16}中之一。
作为实施例3的子实施例,第六信令为新设计的IEEPDCCH-PRB-Short-tti-r13。所述EPDCCH-PRB-Short-tti-r13指示的第二PRB集合分配给M-EREG,且所述第二PRB集合位于LTE子帧的第二时隙。具体的,EPDCCH-PRB-Short-tti-r13表示如下:
对于UE U6,在步骤S63中接收第六信令。
对于基站N5,在步骤S54中,根据第一信令的调度,在所述N个LTE时隙中发送第二数据。
对于UE U6,在步骤S64中,根据第一信令的调度,在所述N个LTE时隙中接收第二数据。
实施例4
实施例4示例了基于第四信令的上行传输流程图,如附图4所示。附图4中,基站N7是UE U8的服务小区的维持基站,方框F4中标识的步骤是可选步骤。
对于基站N7,在步骤S71中发送第一信令。
对于UE U8,在步骤S81中接收第一信令。
对于基站N7,在步骤S72中发送以下至少之一:
-第二信令:第二信令指示第一信道在第一LTE时隙中的所占用的OFDM符号数。其中,第一信令在第一信道上传输,所述所占用的OFDM符号数是小于4的正整数。
-第三信令:第三信令指示第一信令所调度的数据在第一LTE时隙中的起始OFDM符号。其中,所述起始OFDM符号是LTE时隙中的第5个OFDM符号之前的OFDM符号。
对于UE U8,在步骤S82中接收以下至少之一:
-第二信令:第二信令指示第一信道在第一LTE时隙中的所占用的
OFDM符号数。其中,第一信令在第一信道上传输,所述所占用的OFDM符号数是小于4的正整数。
-第三信令:第三信令指示第一信令所调度的数据在第一LTE时隙中的起始OFDM符号。其中,所述起始OFDM符号是LTE时隙中的第5个OFDM符号之前的OFDM符号。
对于基站N7,在步骤S73中发送第四信令,第四信令将第一PRB对集合分配给EPDCCH。
对于UE U8,在步骤S83中接收第四信令。
对于UE U8,在步骤S84中,根据第一信令的调度,在所述N个LTE时隙中发送第二数据。
对于基站N7,在步骤S74中,根据第一信令的调度,在所述N个LTE时隙中接收第二数据。
实施例5
实施例5示例了基于第五信令的上行传输流程图,如附图5所示。附图2中,基站N9是UE U10的服务小区的维持基站,方框F5中标识的步骤是可选步骤。
对于基站N9,在步骤S91中发送第一信令。
对于UE U10,在步骤S101中接收第一信令。
对于基站N9,在步骤S92中发送以下至少之一:
-第二信令:第二信令指示第一信道在第一LTE时隙中的所占用的OFDM符号数。其中,第一信令在第一信道上传输,所述所占用的OFDM符号数是小于4的正整数。
-第三信令:第三信令指示第一信令所调度的数据在第一LTE时隙中的起始OFDM符号。其中,所述起始OFDM符号是LTE时隙中的第5个OFDM符号之前的OFDM符号。
对于UE U10,在步骤S102中接收以下至少之一:
-第二信令:第二信令指示第一信道在第一LTE时隙中的所占用的OFDM符号数。其中,第一信令在第一信道上传输,所述所占用的OFDM符号数是小于4的正整数。
-第三信令:第三信令指示第一信令所调度的数据在第一LTE时隙中的起始OFDM符号。其中,所述起始OFDM符号是LTE时隙中的第5个OFDM
符号之前的OFDM符号。
对于基站N9,在步骤S93中发送第五信令,第五信令将第一PRB对集合分配给M-EREG。
对于UE U10,在步骤S103中接收第五信令。
对于UE U10,在步骤S104中,根据第一信令的调度,在所述N个LTE时隙中发送第二数据。
对于基站N9,在步骤S104中,根据第一信令的调度,在所述N个LTE时隙中接收第二数据。
实施例6
实施例6示例了基于第六信令的上行传输流程图,如附图6所示。附图6中,基站N11是UE U12的服务小区的维持基站,方框F3中标识的步骤是可选步骤。
对于基站N11,在步骤S111中发送第一信令。
对于UE U12,在步骤S121中接收第一信令。
对于基站N11,在步骤S112中发送以下至少之一:
-第二信令:第二信令指示第一信道在第一LTE时隙中的所占用的OFDM符号数。其中,第一信令在第一信道上传输,所述所占用的OFDM符号数是小于4的正整数。
-第三信令:第三信令指示第一信令所调度的数据在第一LTE时隙中的起始OFDM符号。其中,所述起始OFDM符号是LTE时隙中的第5个OFDM符号之前的OFDM符号。
对于UE U12,在步骤S122中接收以下至少之一:
-第二信令:第二信令指示第一信道在第一LTE时隙中的所占用的OFDM符号数。其中,第一信令在第一信道上传输,所述所占用的OFDM符号数是小于4的正整数。
-第三信令:第三信令指示第一信令所调度的数据在第一LTE时隙中的起始OFDM符号。其中,所述起始OFDM符号是LTE时隙中的第5个OFDM符号之前的OFDM符号。
对于基站N11,在步骤S113中发送第六信令,第六信令将第二PRB集合分配给M-EREG。
对于UE U12,在步骤S123中接收第六信令。
对于UE U12,在步骤S124中,根据第一信令的调度,在所述N个LTE时隙中发送第二数据。
对于基站N11,在步骤S114中,根据第一信令的调度,在所述N个LTE时隙中接收第二数据。
实施例7
实施例7示出了本发明在正常CP下,组成第一信令所占用RE的M-EREG资源映射的一个实施例,即M-EREG映射到一个PRB对中的第一图案的示意图。如图7所示,图中的数字标号对应M-EREG的序号,如“0”表示其所在位置的RE属于M-EREG 0,“1”表示其所在位置的RE属于M-EREG 1,以此类推,“X”表示其所在位置的RE属于M-EREG X(X为2至7的正整数)。且属于第一时隙的所有标识为“0”的RE(共9个RE)组成M-EREG 0,所有标识为“1”的RE组成M-EREG 1,以此类推,所有标识为“X”的RE组成M-EREG X(X为2至7的正整数)。且在第一时隙和第二时隙上,M-EREG独立映射,即第一时隙的所有标识为“0”的RE(共9个RE)所组成的M-EREG0,与第二时隙所有标识为“0”的RE(共9个RE)所组成的M-EREG 0彼此独立,并独立的组成第一信令,调度第二数据,以此类推,第一时隙上的M-EREG X与第二时隙上的M-EREG X也彼此独立(X为2至7的正整数)。结合TS 36.211-6.2.4A中关于EREG映射的描述,可以看到,M-EREG与EREG在一个时隙中满足如下映射关系:
EREG 0和EREG 8在一个时隙中占有的RE组成M-EREG 0;
EREG 1和EREG 9在一个时隙中占有的RE组成M-EREG 1;
EREG 2和EREG 10在一个时隙中占有的RE组成M-EREG 2;
EREG 3和EREG 11在一个时隙中占有的RE组成M-EREG 3;
EREG 4和EREG 12在一个时隙中占有的RE组成M-EREG 4;
EREG 5和EREG 13在一个时隙中占有的RE组成M-EREG 5;
EREG 6和EREG 14在一个时隙中占有的RE组成M-EREG 6;
EREG 7和EREG 15在一个时隙中占有的RE组成M-EREG 7;
基于此种映射方式,一个PRB在正常CP下将包含8个M-EREG。
作为该实施例的一个子实施例,一个传统的ECCE(Enhanced control channel element,增强的控制信道单元)将包含4个M-EREG,则ECCE对对应的PRB索引及组成所述ECCE的M-EREG序号,除了将TS 36.211-6.8A-1
中参数固定为2,替换为且固定为4,其余均采用传统的搜索空间(Search Space)方式。这里即等于第四信令或第五信令指示的L,或第六信令指示的J。
实施例8
实施例8示出了本发明在扩展CP下,组成第一信令所占用RE的M-EREG资源映射的一个实施例,即M-EREG映射到一个PRB对中的第一图案的示意图。如图8所示,图中的数字标号对应M-EREG的序号,如“0”表示其所在位置的RE属于M-EREG 0,“1”表示其所在位置的RE属于M-EREG 1,以此类推,“X”表示其所在位置的RE属于M-EREG X(X为2至7的正整数)。且属于第一时隙的所有标识为“0”的RE(共8个RE)组成M-EREG 0,所有标识为“1”的RE组成M-EREG 1,以此类推,所有标识为“X”的RE组成M-EREG X(X为2至7的正整数)。且在第一时隙和第二时隙上,M-EREG独立映射,即第一时隙的所有标识为“0”的RE(共8个RE)所组成的M-EREG0,与第二时隙所有标识为“0”的RE(共8个RE)所组成的M-EREG 0彼此独立,并独立的组成第一信令,调度第二数据,以此类推,第一时隙上的M-EREG X与第二时隙上的M-EREG X也彼此独立(X为2至7的正整数)。结合TS 36.211-6.2.4A中关于EREG映射的描述,可以看到,M-EREG与EREG在一个时隙中满足如下映射关系:
EREG 0和EREG 8在一个时隙中占有的RE组成M-EREG 0;
EREG 1和EREG 9在一个时隙中占有的RE组成M-EREG 1;
EREG 2和EREG 10在一个时隙中占有的RE组成M-EREG 2;
EREG 3和EREG 11在一个时隙中占有的RE组成M-EREG 3;
EREG 4和EREG 12在一个时隙中占有的RE组成M-EREG 4;
EREG 5和EREG 13在一个时隙中占有的RE组成M-EREG 5;
EREG 6和EREG 14在一个时隙中占有的RE组成M-EREG 6;
EREG 7和EREG 15在一个时隙中占有的RE组成M-EREG 7;
基于此种映射方式,一个PRB在扩展CP下将包含8个M-EREG。
作为该实施例的一个子实施例,一个传统的ECCE(Enhanced control channel element,增强的控制信道单元)将包含4个M-EREG,则ECCE对对应的PRB索引及组成所述ECCE的M-EREG序号,除了将TS 36.211-6.8A-1中参数固定为2,替换为且固定为4,其余均采用传统的
搜索空间(Search Space)方式。这里即等于第四信令或第五信令指示的L,或第六信令指示的J。
实施例9
实施例9示出了本发明在正常CP下,组成第一信令所占用RE的M-EREG资源映射的一个实施例,即M-EREG映射到一个PRB对中的第一图案的示意图。如图9所示,图中的数字标号对应M-EREG的序号,如“0”表示其所在位置的RE属于M-EREG 0,“1”表示其所在位置的RE属于M-EREG 1,以此类推,“X”表示其所在位置的RE属于M-EREG X(X为2至7的正整数)。且属于第一时隙的所有标识为“0”的RE(共9个RE)组成M-EREG 0,所有标识为“1”的RE组成M-EREG 1,以此类推,所有标识为“X”的RE组成M-EREG X(X为2至7的正整数)。且在第一时隙和第二时隙上,M-EREG独立映射,即第一时隙的所有标识为“0”的RE(共9个RE)所组成的M-EREG0,与第二时隙所有标识为“0”的RE(共9个RE)所组成的M-EREG 0彼此独立,并独立的组成第一信令,调度第二数据,以此类推,第一时隙上的M-EREG X与第二时隙上的M-EREG X也彼此独立(X为2至7的正整数)。结合TS 36.211-6.2.4A中关于EREG映射的描述,可以看到,M-EREG与EREG在一个时隙中满足如下映射关系:
EREG 0和EREG 12在一个时隙中占有的RE组成M-EREG 0;
EREG 1和EREG 13在一个时隙中占有的RE组成M-EREG 1;
EREG 2和EREG 14在一个时隙中占有的RE组成M-EREG 2;
EREG 3和EREG 15在一个时隙中占有的RE组成M-EREG 3;
EREG 4和EREG 8在一个时隙中占有的RE组成M-EREG 4;
EREG 5和EREG 9在一个时隙中占有的RE组成M-EREG 5;
EREG 6和EREG 10在一个时隙中占有的RE组成M-EREG 6;
EREG 7和EREG 11在一个时隙中占有的RE组成M-EREG 7;
基于此种映射方式,一个PRB在正常CP下将包含8个M-EREG。
作为该实施例的一个子实施例,一个传统的ECCE(Enhanced control channel element,增强的控制信道单元)将包含4个M-EREG,则ECCE对对应的PRB索引及组成所述ECCE的M-EREG序号,除了将TS 36.211-6.8A-1中参数固定为2,替换为且固定为4,其余均采用传统的搜索空间(Search Space)方式。这里即等于第四信令或第五信令指示的
L,或第六信令指示的J。
实施例10
实施例10示出了本发明在扩展CP下,组成第一信令所占用RE的M-EREG资源映射的一个实施例,即M-EREG映射到一个PRB对中的第一图案的示意图。如图10所示,图中的数字标号对应M-EREG的序号,如“0”表示其所在位置的RE属于M-EREG 0,“1”表示其所在位置的RE属于M-EREG1,以此类推,“X”表示其所在位置的RE属于M-EREG X(X为2至7的正整数)。且属于第一时隙的所有标识为“0”的RE(共8个RE)组成M-EREG 0,所有标识为“1”的RE组成M-EREG 1,以此类推,所有标识为“X”的RE组成M-EREG X(X为2至7的正整数)。且在第一时隙和第二时隙上,M-EREG独立映射,即第一时隙的所有标识为“0”的RE(共8个RE)所组成的M-EREG0,与第二时隙所有标识为“0”的RE(共8个RE)所组成的M-EREG 0彼此独立,并独立的组成第一信令,调度第二数据,以此类推,第一时隙上的M-EREG X与第二时隙上的M-EREG X也彼此独立(X为2至7的正整数)。结合TS 36.211-6.2.4A中关于EREG映射的描述,可以看到,M-EREG与EREG在一个时隙中满足如下映射关系:
EREG 0和EREG 12在一个时隙中占有的RE组成M-EREG 0;
EREG 1和EREG 13在一个时隙中占有的RE组成M-EREG 1;
EREG 2和EREG 14在一个时隙中占有的RE组成M-EREG 2;
EREG 3和EREG 15在一个时隙中占有的RE组成M-EREG 3;
EREG 4和EREG 8在一个时隙中占有的RE组成M-EREG 4;
EREG 5和EREG 9在一个时隙中占有的RE组成M-EREG 5;
EREG 6和EREG 10在一个时隙中占有的RE组成M-EREG 6;
EREG 7和EREG 11在一个时隙中占有的RE组成M-EREG 7;
基于此种映射方式,一个PRB在扩展CP下将包含8个M-EREG。
作为该实施例的一个子实施例,一个传统的ECCE(Enhanced control channel element,增强的控制信道单元)将包含4个M-EREG,则ECCE对对应的PRB索引及组成所述ECCE的M-EREG序号,除了将TS 36.211-6.8A-1中参数固定为2,替换为且固定为4,其余均采用传统的搜索空间(Search Space)方式。这里即等于第四信令或第五信令指示的L,或第六信令指示的J。
实施例11
实施例11示出了根据本发明的一个实施例的基站中的处理装置的结构框图;如附图11所示。附图11中,基站处理装置200主要由第一模块201和第二模块202组成。
第一模块201:发送第一信令。
其中,第一信令是物理层信令,第一信令中包括第二数据的调度信息。所述N是正整数。第二数据包括N个传输块组,所述N个传输块组分别在所述N个LTE时隙中传输,一个所述传输块组中包括G个传输块,所述G是正整数。第一信令在第一LTE时隙中传输。第一LTE时隙是LTE子帧的第一时隙,或者第一LTE时隙是LTE子帧的第二时隙。
-此外,第一模块还用于以下至少之一:
发送第二信令:第二信令指示第一信道在第一LTE时隙中的所占用的OFDM符号数。其中,第一信令在第一信道上传输,所述所占用的OFDM符号数是小于4的正整数。
发送第三信令:第三信令指示第一信令所调度的数据在第一LTE时隙中的起始OFDM符号。其中,所述起始OFDM符号是LTE时隙中的第5个OFDM符号之前的OFDM符号。
发送第四信令,第四信令将第一PRB对集合分配给EPDCCH。
发送第五信令,第五信令将第一PRB对集合分配给改进的EREG。其中,第一信令在第一PRB对集合上传输,一个改进的EREG在时域上占用一个LTE时隙。第一PRB对集合包括L个PRB对,所述L是正整数。
发送第六信令,第六信令将第二PRB集合分配给改进的EREG。其中,第一信令在第二PRB集合上传输,一个改进的EREG在时域上占用一个LTE时隙。第二PRB集合包括J个PRB,所述J是正整数。
第二模块202:根据第一信令的调度,在所述N个LTE时隙中发送或者接收第二数据。
实施例12
实施例12示出了根据本发明的一个实施例的UE中的处理装置的结构框图;如附图12所示。附图12中,UE处理装置300主要由第一单元301,第二单元302,第三模块,第四模块,第五模块,和第六模块组成。
第一单元301:接收第一信令。
其中,第一信令是物理层信令,第一信令中包括第二数据的调度信息。所述N是1或者2。第二数据包括N个传输块组,所述N个传输块组分别在所述N个LTE时隙中传输,一个所述传输块组中包括G个传输块,所述G是正整数。第一信令在第一LTE时隙中传输。第一LTE时隙是LTE子帧的第一时隙,或者第一LTE时隙是LTE子帧的第二时隙。
此外,第一模块还用于以下至少之一:
接收第二信令:第二信令指示第一信道在第一LTE时隙中的所占用的OFDM符号数。其中,第一信令在第一信道上传输,所述所占用的OFDM符号数是小于4的正整数。
接收第三信令:第三信令指示第一信令所调度的数据在第一LTE时隙中的起始OFDM符号。其中,所述起始OFDM符号是LTE时隙中的第5个OFDM符号之前的OFDM符号。
接收第四信令,第四信令将第一PRB对集合分配给EPDCCH。
接收第五信令,第五信令将第一PRB对集合分配给改进的EREG。其中,第一信令在第一PRB对集合上传输,一个改进的EREG在时域上占用一个LTE时隙。第一PRB对集合包括L个PRB对,所述L是正整数。
接收第六信令,第六信令将第二PRB集合分配给改进的EREG。其中,第一信令在第二PRB集合上传输,一个改进的EREG在时域上占用一个LTE时隙。第二PRB集合包括J个PRB,所述J是正整数。
第二单元302:根据第一信令的调度,在所述N个LTE时隙中接收或者发送第二数据。
本领域普通技术人员可以理解上述方法中的全部或部分步骤可以通过程序来指令相关硬件完成,所述程序可以存储于计算机可读存储介质中,如只读存储器,硬盘或者光盘等。可选的,上述实施例的全部或部分步骤也可以使用一个或者多个集成电路来实现。相应的,上述实施例中的各模块单元,可以采用硬件形式实现,也可以由软件功能模块的形式实现,本申请不限于任何特定形式的软件和硬件的结合。本发明中的UE包括但不限于手机,平板电脑,笔记本,上网卡,车载通信设备等无线通信设备。本发明中的基站包括但不限于宏蜂窝基站,微蜂窝基站,家庭基站,中继基站等无线通信设备。
以上所述,仅为本发明的较佳实施例而已,并非用于限定本发明的
保护范围。凡在本发明的精神和原则之内,所做的任何修改,等同替换,改进等,均应包含在本发明的保护范围之内。
Claims (18)
- 一种支持低延迟无线通信的基站中的方法,其特征在于,包括如下步骤:-步骤A.发送第一信令;其中,第一信令是物理层信令,第一信令中包括第二数据的调度信息;所述N是正整数;第二数据包括N个传输块组,所述N个传输块组分别在所述N个LTE时隙中传输,一个所述传输块组中包括G个传输块,所述G是正整数;第一信令在第一LTE时隙中传输;第一LTE时隙是LTE子帧的第一时隙,或者第一LTE时隙是LTE子帧的第二时隙。
- 根据权利要求1所述的支持低延迟无线通信的基站中的方法,其特征在于,所述步骤A还包括如下步骤:-步骤A0.发送以下至少之一:-第二信令:第二信令指示第一信道在第一LTE时隙中的所占用的OFDM符号数;其中,第一信令在第一信道上传输,所述所占用的OFDM符号数是小于4的正整数;-第三信令:第三信令指示第一信令所调度的数据在第一LTE时隙中的起始OFDM符号;其中,所述起始OFDM符号是LTE时隙中的第5个OFDM符号之前的OFDM符号。
- 根据权利要求1所述的支持低延迟无线通信的基站中的方法,其特征在于,所述步骤A还包括如下步骤:-步骤A1.发送第四信令,第四信令将第一PRB对集合分配给EPDCCH;其中,第一信令在第一PRB对集合上传输,第一PRB对集合包括L个PRB对,所述L是正整数。
- 根据权利要求1或3所述的支持低延迟无线通信的基站中的方法,其特征在于,所述步骤A还包括如下步骤:-步骤A2.发送第五信令,第五信令将第一PRB对集合分配给改进的EREG;其中,第一信令在第一PRB对集合上传输,一个改进的EREG在时域上占用一个LTE时隙;第一PRB对集合包括L个PRB对,所述L是正整数。
- 根据权利要求1或3所述的支持低延迟无线通信的基站中的方法,其特征在于,所述步骤A还包括如下步骤:-步骤A3.发送第六信令,第六信令将第二PRB集合分配给改进的EREG;其中,第一信令在第二PRB集合上传输,一个改进的EREG在时域上占用一个LTE时隙;第二PRB集合包括J个PRB,所述J是正整数。
- 根据权利要求1,3,4或5所述的支持低延迟无线通信的基站中的方法,其特征在于,第一信令占用的RE由K个改进的EREG组成;其中,所述K为正整数;一个所述改进的EREG由两个EREG各自所占用的部分RE所组成,一个所述改进的EREG在时域上占用一个LTE时隙;一个所述改进的EREG由9或者8个RE组成。
- 根据权利要求1-6中任一项所述的支持低延迟无线通信的基站中的方法,其特征在于,还包括如下步骤:-步骤B.根据第一信令的调度,在所述N个LTE时隙中发送或者接收第二数据。
- 一种支持低延迟无线通信的UE中的方法,其特征在于,包括如下步骤:-步骤A.接收第一信令;其中,第一信令是物理层信令,第一信令中包括第二数据的调度信息;所述N是正整数;第二数据包括N个传输块组,所述N个传输块组分别在所述N个LTE时隙中传输,一个所述传输块组中包括G个传输块,所述G是正整数;第一信令在第一LTE时隙中传输;第一LTE时隙是LTE子帧的第一时隙,或者第一LTE时隙是LTE子帧的第二时隙。
- 根据权利要求8所述的支持低延迟无线通信的UE中的方法,其特征在于,所述步骤A还包括如下步骤:-步骤A0.接收以下至少之一:-第二信令:第二信令指示第一信道在第一LTE时隙中的所占用的OFDM符号数;其中,第一信令在第一信道上传输,所述所占用的OFDM符号数是小于4的正整数;-第三信令:第三信令指示第一信令所调度的数据在第一LTE时隙中的起始OFDM符号;其中,所述起始OFDM符号是LTE时隙中的第5个OFDM符号之前的OFDM符号。
- 根据权利要求8所述的支持低延迟无线通信的UE中的方法,其特征在于,所述步骤A还包括如下步骤:-步骤A1.接收第四信令,第四信令将第一PRB对集合分配给EPDCCH;其中,第一信令在第一PRB对集合上传输,第一PRB对集合包括L个PRB对,所述L是正整数。
- 根据权利要求8或10所述的支持低延迟无线通信的UE中的方法,其特 征在于,所述步骤A还包括如下步骤:-步骤A2.接收第五信令,第五信令将第一PRB对集合分配给改进的EREG;其中,第一信令在第一PRB对集合上传输,一个改进的EREG在时域上占用一个LTE时隙;第一PRB对集合包括L个PRB对,所述L是正整数。
- 根据权利要求8或10所述的支持低延迟无线通信的UE中的方法,其特征在于,所述步骤A还包括如下步骤:-步骤A3.接收第六信令,第六信令将第二PRB集合分配给改进的EREG;其中,第一信令在第二PRB集合上传输,一个改进的EREG在时域上占用一个LTE时隙;第二PRB集合包括J个PRB,所述J是正整数。
- 根据权利要求8,10,11或12所述的支持低延迟无线通信的UE中的方法,其特征在于,第一信令占用的RE由K个改进的EREG组成;其中,所述K为正整数;一个所述改进的EREG由两个EREG各自所占用的部分RE所组成,一个所述改进的EREG在时域上占用一个LTE时隙;一个所述改进的EREG由9或者8个RE组成。
- 根据权利要求8-13中任一项所述的支持低延迟无线通信的UE中的方法,其特征在于,还包括如下步骤:-步骤B.根据第一信令的调度,在所述N个LTE时隙中接收或者发送第二数据。
- 一种支持低延迟无线通信的基站设备,其特征在于,包括:-第一模块:用于发送第一信令;其中,第一信令是物理层信令,第一信令中包括第二数据的调度信息;所述N是正整数;第二数据包括N个传输块组,所述N个传输块组分别在所述N个LTE时隙中传输,一个所述传输块组中包括G个传输块,所述G是正整数;第一信令在第一LTE时隙中传输;第一LTE时隙是LTE子帧的第一时隙,或者第一LTE时隙是LTE子帧的第二时隙;-此外,第一模块还用于以下至少之一:发送第二信令:第二信令指示第一信道在第一LTE时隙中的所占用的OFDM符号数;其中,第一信令在第一信道上传输,所述所占用的OFDM符号数是小于4的正整数;发送第三信令:第三信令指示第一信令所调度的数据在第一LTE时隙中的起始OFDM符号;其中,所述起始OFDM符号是LTE时隙中的第5个OFDM符号 之前的OFDM符号;发送第四信令,第四信令将第一PRB对集合分配给EPDCCH;发送第五信令,第五信令将第一PRB对集合分配给改进的EREG;其中,第一信令在第一PRB对集合上传输,一个改进的EREG在时域上占用一个LTE时隙;第一PRB对集合包括L个PRB对,所述L是正整数;发送第六信令,第六信令将第二PRB集合分配给改进的EREG;其中,第一信令在第二PRB集合上传输,一个改进的EREG在时域上占用一个LTE时隙;第二PRB集合包括J个PRB,所述J是正整数;-第二模块:根据第一信令的调度,在所述N个LTE时隙中发送或者接收第二数据。
- 根据权利要求15所述的支持低延迟无线通信的基站设备,其特征在于,第一信令占用的RE由K个改进的EREG组成;其中,所述K为正整数;一个所述改进的EREG由两个EREG各自所占用的部分RE所组成,一个所述改进的EREG在时域上占用一个LTE时隙;一个所述改进的EREG由9或者8个RE组成。
- 一种支持低延迟无线通信的UE设备,其特征在于,包括:-第一模块:用于接收第一信令;其中,第一信令是物理层信令,第一信令中包括第二数据的调度信息;所述N是正整数;第二数据包括N个传输块组,所述N个传输块组分别在所述N个LTE时隙中传输,一个所述传输块组中包括G个传输块,所述G是正整数;第一信令在第一LTE时隙中传输;第一LTE时隙是LTE子帧的第一时隙,或者第一LTE时隙是LTE子帧的第二时隙;-此外,第一模块还用于以下至少之一:接收第二信令:第二信令指示第一信道在第一LTE时隙中的所占用的OFDM符号数;其中,第一信令在第一信道上传输,所述所占用的OFDM符号数是小于4的正整数;接收第三信令:第三信令指示第一信令所调度的数据在第一LTE时隙中的起始OFDM符号;其中,所述起始OFDM符号是LTE时隙中的第5个OFDM符号之前的OFDM符号;接收第四信令,第四信令将第一PRB对集合分配给EPDCCH;接收第五信令,第五信令将第一PRB对集合分配给改进的EREG;其中,第一信令在第一PRB对集合上传输,一个改进的EREG在时域上占用一个LTE 时隙;第一PRB对集合包括L个PRB对,所述L是正整数;接收第六信令,第六信令将第二PRB集合分配给改进的EREG;其中,第一信令在第二PRB集合上传输,一个改进的EREG在时域上占用一个LTE时隙;第二PRB集合包括J个PRB,所述J是正整数;-第二模块:根据第一信令的调度,在所述N个LTE时隙中接收或者发送第二数据。
- 根据权利要求17所述的支持低延迟无线通信的UE设备,其特征在于,第一信令占用的RE由K个改进的EREG组成;其中,所述K为正整数;一个所述改进的EREG由两个EREG各自所占用的部分RE所组成,一个所述改进的EREG在时域上占用一个LTE时隙;一个所述改进的EREG由9或者8个RE组成。
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| CN101753274A (zh) * | 2008-12-19 | 2010-06-23 | 中国移动通信集团设计院有限公司 | Tdd hsdpa系统中的资源调度方法、系统及设备 |
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| CN101753274A (zh) * | 2008-12-19 | 2010-06-23 | 中国移动通信集团设计院有限公司 | Tdd hsdpa系统中的资源调度方法、系统及设备 |
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