WO2010135860A1 - Method and apparatus for allocating the multi-carrier ack channel - Google Patents
Method and apparatus for allocating the multi-carrier ack channel Download PDFInfo
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- WO2010135860A1 WO2010135860A1 PCT/CN2009/071968 CN2009071968W WO2010135860A1 WO 2010135860 A1 WO2010135860 A1 WO 2010135860A1 CN 2009071968 W CN2009071968 W CN 2009071968W WO 2010135860 A1 WO2010135860 A1 WO 2010135860A1
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- ack channel
- sequence number
- carrier
- uplink ack
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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
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
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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 signaling, i.e. of overhead other than pilot signals
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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 signaling, i.e. of overhead other than pilot signals
- H04L5/0055—Physical resource allocation for ACK/NACK
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
Definitions
- Embodiments of the present invention relate to communication technologies, and in particular, to a method and an apparatus for multi-carrier ACK channel allocation. Background of the invention
- LTE-A Long Term Evolution - Advanced
- LTE-A with carrier aggregation multiple component carriers can be used simultaneously to obtain a wider transmission bandwidth.
- Each component carrier in the LTE-A system may be configured to be compatible with the LTE system, and the spectrum of each component carrier may be an adjacent contiguous spectrum, or may be a non-adjacent spectrum in the same frequency band or even in a different frequency band. Discontinuous spectrum.
- an LTE User Equipment can only access one or a pair of component carriers for data transmission and reception, and the LTE-A UE can simultaneously access multiple members according to its capabilities and service requirements.
- the carrier performs data transmission and reception.
- Carrier aggregation technology is sometimes called Spectrum Aggregation or Bandwidth Extension.
- each member carrier has a separate HARQ (Hybrid Automatic Repeat Request) process
- the LTE-A UE can be configured with different UL CCs (UpLink Component Carriers). Carrier) and the number of DL CCs (downlink component carriers).
- UL CCs UpLink Component Carriers
- Carrier Carrier
- DL CCs downlink component carriers
- PDCCH Physical Downlink Control
- CHannel physical layer downlink control channel
- CHannel physical layer downlink control channel
- the LTE-A base station allocates an ACK channel to at least one DL CC by setting different uplink ACK channel mapping start offsets for each DL CC, which causes discontinuity of uplink ACK channel allocation, so each The DL CCs are discontinuous by the resource blocks corresponding to the idle uplink ACK channel, and it is difficult to utilize these discontinuous resource blocks.
- the prior art requires the base station to send signaling for each initial offset, which increases the number of signaling that the base station sends. Summary of the invention
- Embodiments of the present invention provide a method, device, and system for multi-carrier ACK channel allocation.
- An embodiment of the present invention provides a method for allocating a multi-carrier ACK channel, including: allocating a sequence number to at least one DL CC and/or a downlink subframe;
- Sub-blocks are allocated for the uplink ACK channel corresponding to the downlink subframe of the DL CC, and the sub-block labels are allocated; the uplink ACK channel is allocated to the at least one DL CC according to the sequence of incrementing the above-mentioned sequence numbers and incrementing the sub-block labels.
- An embodiment of the present invention provides a base station, including:
- a first sequence number allocation module configured to allocate a sequence number to at least one DL CC and/or a downlink subframe
- a first label allocation module configured to divide a sub-block for an uplink ACK channel corresponding to each downlink subframe, and allocate a sub-block label ;
- a first channel allocation module configured to allocate an uplink ACK channel to the at least one DL CC according to the sequence of incrementing the foregoing sequence number and then incrementing the foregoing sub-block number.
- An embodiment of the present invention provides a UE, including:
- a second channel allocation module configured to allocate an uplink ACK channel to the at least one DL CC according to the order of increasing the sequence number and then incrementing the sub-block number.
- An embodiment of the present invention provides a system for multi-carrier ACK channel allocation, including: The base station is configured to allocate a sub-block for the uplink ACK channel corresponding to each downlink subframe, and allocate a sub-block label; and configured to allocate an uplink ACK to the at least one DL CC according to the sequence of incrementing the sequence number and then incrementing the sub-block label.
- Channel configured to allocate an uplink ACK channel for at least one DL CC according to an order of increasing the foregoing sequence number and then incrementing the foregoing label.
- a method, a device, and a system for allocating a multi-carrier ACK channel allocate an uplink ACK channel corresponding to an actual associated subframe of a different DL CC, the sequence number of the sub-block can be incremented and the paired DL CC
- Corresponding idle uplink ACK channel blocks caused by fewer actual associated subframes and smaller n CFI values are organized into continuous distribution, thus being able to better support dynamics on resource blocks corresponding to these idle uplink ACK channel blocks.
- the physical layer uplink shared channel is scheduled.
- LTE-A TDD LTE-A Time Division Duplex
- FIG. 2 is a schematic diagram of an embodiment of allocating an uplink ACK channel according to the present invention.
- FIG. 3 is a schematic diagram of an uplink ACK channel distribution allocated by a PDCCH
- FIG. 4 is a schematic diagram of an uplink ACK channel distribution allocated by a PDCCH
- FIG. 5 is a schematic diagram of an ACK channel allocation result according to an embodiment of the present invention.
- FIG. 6 is a schematic diagram of an embodiment of an uplink ACK channel reserved for at least one DL CC according to the present invention
- FIG. 7 is a schematic structural diagram of a base station according to an embodiment of the present invention.
- FIG. 8 is a schematic structural diagram of a UE according to an embodiment of the present invention. Mode for carrying out the invention
- the embodiment of the present invention provides a method and a device for allocating an ACK channel under carrier aggregation, and further describes the technical solution of the embodiment of the present invention in further detail.
- the inventor finds a base station in the prior art of LTE-A.
- the method of allocating an uplink ACK channel for at least one DL CC is to set a different ACK channel mapping start offset for each DL CC, and the base station is required to signal each start offset.
- the idle uplink ACK channel block caused by the less actual number of associated subframes and the smaller " ⁇ value corresponding to the DL CC is discontinuously distributed, so it is difficult to dynamically schedule these idle resources. Up to the data transmission; and because the initial offset is to be sent separately for each DL CC, the number of signaling sent by the base station is increased.
- the uplink ACK channel mapping start offset of the ith DL CC setting is N CCHJ
- the CCE (Control Channel Element) of the i-th DL CC is shown as the number of uplink ACK channels reserved for the uplink ACK channel label mapping.
- a method similar to n CCE to CCH mapping in the LTE system is adopted in each component carrier.
- the " CC £ to" mapping method in the LTE TDD is: According to the uplink and downlink subframe ratio and the HARQ timing relationship, the downlink associated subframe set index is defined for each uplink subframe: ,..., ⁇ , as shown in Table 1 below.
- the problem is that the uplink ACK channel is allocated to the PDCCHs that are sent in at least one downlink subframe in one uplink subframe. In the downlink associated subframe set index: ,...
- the number of elements in the set M indicates that the uplink ACK channel is allocated to the PDCCHs that are sent by the M subframes in the uplink subframe; the order of the elements, that is, the subscript w of t m (0 ⁇ w ⁇ M - 1)
- the corresponding subframe is followed by a downlink subframe set that feeds back ACK/NACK (ACKnowledgement/Negative-ACKnowledgement acknowledgement/deny response) in the uplink subframe.
- ACK/NACK ACKnowledgement/Negative-ACKnowledgement acknowledgement/deny response
- the occupied initial CCE label is n CCE
- the corresponding allocated uplink ACK channel label is first Select one from the set ⁇ ⁇ 0,1,2,3 ⁇ ; 7 values make
- the calculated uplink ACK channel label is calculated, where ⁇ indicates the starting offset of the uplink ACK channel mapped according to the CCE label in all PUCCH (Physical Layer Uplink Control CHannel) format 1/la/lb channel Set,
- N p max ⁇ 0, Is the downlink system bandwidth represented by the number of resource blocks, N is the number of consecutive subcarriers occupied by a resource block in the frequency domain, and L" represents a rounding down operation.
- the uplink ACK channel mapping starting offset is set at this time.
- A3 ⁇ 4 COT it is set according to the maximum number of elements in the index of the uplink and downlink associated subframe set. For example, when the uplink and downlink subframe ratio is 3, the maximum number of elements in the downlink associated subframe set index is 3, that is, the uplink ACK channel resource is reserved according to the number of CCEs of the three downlink subframes.
- the reserved uplink ACK channel resources may exceed the actual demand, and the resource blocks corresponding to the idle uplink ACK channels may be dynamic in the LTE TDD system.
- the ground is scheduled for PUSCH transmission.
- mapping method is applied to the nCCE n PUCCH in the LTE-A TDD system.
- these idle uplink ACK channels are not continuous, and it is difficult to be dynamically scheduled for PUSCH transmission at the same time.
- LTE-A TDD system when different uplink ACK channel mapping start offsets are respectively set for each DL CC in at least one DL CC of the same UL CC mapping uplink ACK channel, also according to each DL CC The corresponding maximum number of elements in the downlink associated subframe set index is set.
- Figure 1 shows an example in which all component carriers use the uplink-downlink subframe ratio of 3, and allocate the corresponding uplink ACK channel to the PDCCHs sent by the three DL CCs in the same UL CC; Up to 3 subframes in the downlink associated subframe set index when the uplink-downlink subframe ratio is 3, so the uplink ACK channel mapping start offset is set according to 3 subframes; in subframes 3 and 4 of the UL CC.
- the uplink ACK channels allocated for the two subframes in the downlink associated subframe set index of each DL CC are respectively shown in the gray and black small blocks in FIG. 1, and the reserved uplink ACK channel corresponding to one subframe is idle.
- each of the small blocks corresponds to at least one consecutive upstream ACK channel.
- the third small block allocated to each subframe is also an idle uplink ACK. At this time, all the idle uplink ACK channels are as shown in Figure 1.
- the idle uplink ACK channels in the uplink ACK channels reserved for each DL CC are discontinuously distributed, and these discontinuous idles
- the resource block corresponding to the uplink ACK channel cannot be utilized during data transmission, so waste is formed.
- an idle uplink ACK channel block caused by a small number of actually associated subframes and a small value is organized into a continuous distribution by an allocation rule, and these idle uplinks may be used.
- the resource blocks corresponding to the ACK channel are aggregated to better support dynamic scheduling of PUSCH transmissions on these resource blocks.
- the signaling sent by the base station can be effectively reduced.
- 2 is a schematic diagram of an embodiment of a downlink subframe allocation sequence number, an allocation sub-block number, and an uplink ACK channel of at least one DL CC according to the present invention. This embodiment includes:
- Step 201 Assign a sequence number to at least one DL CC and/or a downlink subframe.
- Step 202 Divide a sub-block for an uplink ACK channel corresponding to a downlink subframe of the DL CC, and allocate a sub-block label;
- Step 203 Allocate an uplink ACK channel to the at least one DL CC according to the order of increasing the foregoing sequence number and then incrementing the foregoing sub-block number.
- This embodiment is applicable to the LTE-A TDD and LTE-A FDD systems, and the base station allocates an uplink ACK channel to the DL CC.
- the base station Before allocating the uplink ACK channel, the base station divides the DL CC into pairs and unpaired, and then assigns the carrier mapping sequence number to them.
- the subframe mapping sequence number needs to be allocated after the carrier mapping sequence number is allocated.
- the 4 Cff of the uplink ACK channel to be allocated is obtained by calculating the formula. The following is a detailed description of each step.
- the LTE UE can only access one UL CC and one DL CC at the same time, and the LTE-A UE can simultaneously access A UL CC and A Di DL CC, where both A m and A Di are positive integers. And the two can be different.
- the LTE-A UE when the number of configured DL CCs is > 1 and the PDCCH is transmitted on the configured DL CC, it may be the same according to the correspondence between the DL CC where the LTE-A UE PDCCH is located and the UL CC where the uplink ACK channel is located.
- the UL CC allocates an uplink ACK channel to a PDCCH that is transmitted to the LTE-A UE under a plurality of DL CCs.
- a corresponding relationship is that the uplink ACK channels allocated for the PDCCHs sent by the multiple DL CCs are dispersed in the configured UL CCs, as shown in the example in FIG.
- DL CC 1 and DL CCs are configured for one LTE-A UE.
- DL CC 3, UL CC 1 and UL CC 2 the PDCCH sent by DL CC 1 is assigned an uplink ACK corresponding to UL CC 1
- the PDCCH transmitted by the DL CC 2 and the DL CC 3 allocates a corresponding uplink ACK channel in the UL CC 2.
- Another type of correspondence is that the uplink ACK channels allocated by the PDCCHs that are allocated by all the configured DL CCs are concentrated in a certain UL CC, as shown in FIG. 4 , where DL CC 1 and DL CC are configured for a certain LTE-A UE.
- DLCC 3 ULCC 1 ⁇ ULCC2
- PDCCHs transmitted in DLCC 1, DL CC 2, and DL CC 3 are all concentrated on the uplink ACK channel corresponding to the UL CC 2 allocation.
- it is from the perspective of an LTE-AUE. From a system perspective, the correspondence between the DL CC where the PDCCH of each LTE-A UE and the uplink ACK channel are located may be the same or different.
- the UL CC is the DL.
- the PDCCH delivered by CC i reserves and allocates an uplink ACK channel.
- one ULCC and one DLCC can be simultaneously accessed by one LTE UE, it is called a component pair component carrier, and will be called a pair of component carriers of each other; otherwise, it is called a group.
- Unpaired member carriers and will be referred to each other as the unpaired member carrier of the other party.
- ULCC1 and DLCC 1, ULCC 2 and DLCC 2 are such two component pairs of component carriers; in the remaining case, one UL CC and one DL CC constitute a set of unpaired component carriers.
- step 201 when the base station is to be in a certain ULCC, it is 4) (4) ⁇ 1) DLCC, ....
- the LTE-A TDD system can be similar to the LTE TDD system, according to the uplink and downlink subframe ratio setting of the component carrier and the HARQ timing relationship, and the UL CC is defined as 4) DL CCs respectively.
- Downlink associated subframe set index When the uplink and downlink subframe ratio settings are the same, it is recommended to use the same downlink associated subframe set index as the LTE TDD system, as shown in Table 1.
- the actual number of subframes associated with each DL CC is the number of elements in the downlink associated subframe set index defined for the current uplink subframe of the UL CC.
- the foregoing allocation sequence number may be a direct unified number allocation of at least one downlink associated subframe of the at least one DL CC, and the subframe mapping sequence number in the DL CC has been given in consideration of the order of the elements in the downlink associated subframe set index.
- the sequence number assigned is composed of a carrier mapping sequence number and a subframe mapping sequence number.
- the sequence number assigned to each downlink associated subframe of the at least one DL CC that maps the uplink ACK channel in the same UL CC is specifically: assigning a carrier mapping sequence number to the unpaired DL CC in the 4) DL CCs according to the downlink associated subframe set index
- the element order is assigned a subframe mapping sequence number w for each associated downlink subframe within each DL CC.
- the actual number of subframes associated with each DL CC is 1.
- the sequence number assigned to each downlink associated subframe of the at least one DL CC of the same UL CC mapping uplink ACK channel is specifically: assigning a carrier mapping number to the unpaired DL CC of the 4 DL CCs
- the carrier mapping sequence number is only allocated for the unpaired DL CCs of the four DL CCs, so that the paired DL CCs adopt the uplink ACK channel allocation mechanism of the LTE system to maintain the LTE UE.
- the at least one DL CC is at least one unpaired DL CC.
- DL CCs can be regarded as a set ⁇ ' , ⁇ , U to the set ⁇ 0, ⁇ , 4 _ 2 ⁇ - mapping.
- the base station may notify the LTE-A UE of the assigned carrier mapping sequence number in the following manner.
- the base station transmits a carrier mapping sequence number assigned to the unpaired DL CC in the paired DL CC broadcast of the UL CC.
- the assigned carrier mapping sequence number is mapped according to the unpaired DL CC label of the notification according to the preset rule. Further, the preset rule may be a mapping of the carrier label to the carrier mapping sequence number.
- Manner 3 For the LTE-A UE, the base station notifies at least the carrier mapping sequence number of the unpaired DL CC configured by the LTE-A UE by using UE-specific signaling.
- the first label allocation module of the base station divides the sub-blocks for the uplink ACK channel corresponding to the downlink subframe of the DL CC, and allocates the sub-block labels.
- the above divided sub-blocks are performed according to different CCE numbers when the PDCCH channel occupies a different number of OFDM symbols n CFI .
- step 201 is to assign a carrier mapping sequence number to the unpaired DL CCs of the 4) DL CCs.
- the at least one DL CC is at least one unpaired DL CC and is not paired with DL CCs.
- the number is - impair , ⁇ A _ impair ⁇ A ⁇ , 0 ⁇ q ⁇ A_ impair.
- the uplink ACK channel corresponding to one downlink subframe is divided into sub-blocks, and the first P sub-blocks are composed of N uplink ACK channels, then the Pth sub-block is composed of N q , d
- the number consists of consecutive uplink ACK channels.
- N ⁇ denotes the downlink subframe pre-corresponding to the unpaired DL CC to which the carrier mapping sequence number is assigned in the LTE-A FDD system
- the number of uplink ACK channels reserved where ⁇ represents the number of uplink ACK channels reserved for the downlink subframe corresponding to the wth element of the downlink associated subframe set index of the unpaired DL CC to which the carrier mapping sequence number is allocated in the LTE-A TDD system
- Min ⁇ x,j ⁇ means taking the smaller of x and y.
- Another type of overhead compression mechanism is a resource compression factor used by a base station to broadcast an uplink ACK channel reserved for an unpaired DL CC to which a carrier mapping sequence number is assigned, where is a positive integer, where ⁇ represents
- the above-mentioned allocation sub-block label is assigned a sub-block label according to the CCE label " CC £ .
- the CCE label n CCE is a label of the CCE occupied by the UE PDCCH channel.
- the PDCCH channel occupies multiple CCEs, it may also be a PDCCH channel.
- the specific process of allocating the sub-block label P according to the CCE label n CCE is: selecting a P from the set ⁇ 0, 1, 2, 3 ⁇ in the downlink subframe labeled with the carrier mapping sequence number as " CC " The value is such that N q , p ⁇ fO ⁇ N q , p + l , assign sub-block numbers where /(" CC £ ) represents a function of the CCE label " CC £ .
- Step 203 Assign an uplink ACK channel to the at least one DL CC according to the sequence of incrementing the sequence number and then incrementing the sub-block number.
- the uplink ACK channel allocation mechanism of the LTE system is reused in order to maintain backward compatibility with the LTE UE, and will not be described in detail herein. Discussed below is the process of allocating an uplink ACK channel for an unpaired DL CC.
- the foregoing step of incrementing the sequence number by incrementing the sequence number is at least one
- the DL CC allocates an uplink ACK channel, which is specifically: assigning an uplink ACK channel to at least one DL CC according to an order of increasing the carrier mapping sequence number, re-incrementing the subframe mapping sequence number w, and finally incrementing the sub-block number P;
- the mapping sequence number ⁇ , the re-incrementing carrier mapping sequence number, and the order of the last sub-block number P are finally incremented to allocate an uplink ACK channel for at least one DL CC.
- the carrier mapping sequence number q is incremented, and the subframe is incremented.
- the sequence of mapping the sequence number w and finally incrementing the sub-block label p, the specific process of allocating the uplink ACK channel is as follows:
- A3 ⁇ 4 CCff fl indicating the initial offset of the uplink ACK channel mapped according to at least one unpaired DL CC CCE label in all PUCCH format 1/la/lb channels.
- the sequence number is incremented according to the first incrementing subframe, and the carrier is incremented.
- the mapping sequence number ⁇ , the order of the last incrementing sub-block label P, the specific process of allocating the uplink ACK channel is as follows: Let the assigned uplink ACK channel label be UCCH , and substitute the sub-block label value assigned in step 202.
- n CCH ⁇ ,. x N, p + ⁇ M t x (N, p+1 - N, p ) + mx ( ⁇ +1 - N q + f(n CCE ) - + N UCCH , calculated in U
- ⁇ , ⁇ indicates the number of associated downlink subframes given by the downlink associated subframe set index of the DL CC to which the carrier mapping sequence number is assigned
- A3 ⁇ 4 cai fl > indicates according to at least one unpaired DL CC
- the sequence number is composed of a carrier mapping sequence number
- the uplink ACK channel is allocated to at least one DL CC according to the sequence of incrementing the sequence number and then incrementing the sub-block number, which is specifically:
- the order of the sub-block labels P is incremented to allocate an uplink ACK channel for at least one DL CC.
- the actual number of subframes associated with each DL CC described above is 1.05.
- the label is n CCE ⁇ CE
- the specific process of allocating the uplink ACK channel according to the order of increasing the carrier mapping sequence ⁇ and incrementing the sub-block label P is as follows: :
- the assigned uplink ACK channel label be CCH
- substitute the sub-block label assigned in step 202 into npucc Calculating the assigned uplink ACK channel label, where Indicates the starting offset of the uplink ACK channel mapped according to at least one unpaired DL CC CCE label in all PUCCH format 1/la/lb channels.
- the maximum number of elements in the downlink associated subframe set index corresponding to each DL CC is to be used.
- the embodiment of the present invention proposes to map an uplink ACK channel on the same uplink component carrier according to the actual number of subframes associated with each DL CC.
- Each downlink associated subframe of the at least one DL CC is allocated a sequence number, and the uplink ACK channel allocated in the subframe divides the sub-block and allocates the sub-block label, and the order of the sub-block label is incremented by increasing the sequence number to be at least one DL CC.
- the uplink ACK channel is allocated.
- H ⁇ DL CC 3 is a pair of DL CCs, and when the carrier mapping numbers 0 and 1 are respectively assigned to the unpaired DL CC 1 and DL CC 2, the uplink ACK channels are allocated for the paired and unpaired DL CCs.
- the mapping start offset U CCH , x CH , u , ir respectively is notifying the mapping start offset U CCH , x CH , u , ir respectively , according to the order of increasing the carrier mapping sequence number, the incrementing subframe mapping sequence number, and the last increasing sub-block number.
- the uplink ACK channel allocated for each DL CC is as shown in the figure. 5 is shown. As can be seen from FIG.
- the embodiment of the present invention can organize idle uplink ACK channel blocks caused by fewer actual associated subframes and smaller values corresponding to unpaired DL CCs into a continuous distribution, and thus can be better.
- the physical layer uplink shared channel is dynamically scheduled on the resource blocks corresponding to the idle uplink ACK channel blocks.
- the embodiment of the present invention can prevent the base station from notifying an uplink ACK channel mapping start offset for each DL CC, and notifying the common uplink ACK channel mapping start offset for the unpaired DL CC, which can effectively reduce the base station sending Signaling.
- the method can also be used in FDD systems to maintain the same design of LTE-A TDD and FDD systems.
- the idle uplink ACK channel blocks of the unpaired DL CC due to the smaller " OT value" can be organized into a continuous distribution, and the resources corresponding to the idle uplink ACK channel blocks can be better supported.
- the physical layer uplink shared channel is dynamically scheduled on the block.
- Figure 6 is a schematic diagram 601 of an embodiment of the present invention for reserving an uplink ACK channel for at least one DL CC, which is reserved for at least one DL CC according to the maximum number of subframes associated with the DL CC.
- Step 602 Assign a sequence number to at least one DL CC and/or a downlink subframe.
- Step 603 Divide a sub-block for an uplink ACK channel corresponding to a downlink subframe of the DL CC, and allocate a sub-block label;
- Step 604 Allocate an uplink ACK channel for at least one DL CC according to the order of increasing the foregoing sequence number and then incrementing the foregoing sub-block number.
- This embodiment is applicable to the LTE-A TDD and LTE-A FDD systems, and the base station allocates an uplink ACK channel to the DL CC.
- the base station reserves an uplink ACK channel for some DL CCs, then divides the DL CC into pairs and unpaired, and then assigns a carrier mapping sequence number to them.
- the carrier mapping sequence number is allocated.
- the subframe mapping sequence number needs to be allocated, and according to the above sequence number and the sub-block label, the n CCH of the uplink ACK channel to be allocated is obtained by calculating a formula. Each step is explained in detail below.
- the LTE TDD system may be similar to the LTE TDD system, according to the uplink and downlink subframe ratio setting of the component carrier and the HARQ timing relationship, and the downlink component carrier is defined as the downlink associated subframe set index for the at least one DL CC. .
- the uplink and downlink subframe ratio settings are the same, it is recommended to use the same downlink associated subframe set index as the LTE TDD system.
- a simple resource reservation method is to reserve an uplink ACK channel for at least one DL CC according to the maximum number of elements in the downlink associated subframe set index of each DL CC, that is, the maximum number of subframes associated with the DL CC.
- the maximum number of subframes associated with each DL CC is 1.
- the uplink ACK channel resource reserved for the at least one DL CC informs the UE by indicating a starting offset A3 ⁇ 4 C in all PUCCH format 1/la/lb channels of the uplink ACK channel mapped according to the at least one DL CC CCE label.
- the initial offset A3 ⁇ 4 COT of the uplink ACK channel mapped according to the at least one DL CC CCE label in all PUCCH formats 1/la/lb channel means ⁇ 3 ⁇ 4 ⁇ , ⁇ ⁇ ⁇ , this parameter can be broadcasted by the base station to inform the UE.
- the base station also broadcasts a different uplink ACK channel mapping start offset and transmits the notified uplink ACK channel.
- the initial offset is mapped to reserve uplink ACK channel resources.
- the allocation of the uplink ACK channel to the PDCCH channel delivered by the unpaired DL CC may only occur in the LTE-A UE, so this part of the resource allocation may not consider the backward compatibility of the LTE UE.
- it is an unpaired DL CC.
- the reserved uplink ACK channel resources may not be reserved according to the maximum number of CCEs as in the LTE system, but introduce some overhead compression mechanism.
- the overhead compression mechanism is the number of uplink ACK channels that the base station broadcasts to notify for unpaired DL CCs, such as or.
- Another type of overhead compression mechanism is a resource compression factor used by the base station to notify the unpaired DL CC of the uplink ACK channel, for example, where a positive integer is used, which may be the same or different for each unpaired DL CC.
- the resource compression factor is notified, the number of uplink ACK channels reserved for the unpaired DL CC to which the carrier mapping sequence number is assigned is calculated according to the notified resource compression factor, for example, for max - 4)] / 3 ⁇ ]
- ⁇ denotes a PDCCH within a subframe
- ⁇ can be 2 3 or 4 depending on the downlink system bandwidth and whether it is a subframe carrying the TDD system synchronization channel.
- the base station allocates the uplink ACK channel to the at least one DL CC according to the sequence number and the sub-block number.
- the base station allocates the uplink ACK channel to the DL CC that has reserved the ACK channel, and the specific allocation method is the same as steps 201 to 203. That is, the DL CC with the ACK channel reserved is allocated a set of ACK channels according to step 302.
- the embodiment of the present invention proposes to allocate a carrier mapping sequence number to at least one DL CC of the same UL CC mapping uplink ACK channel, and reserve an uplink ACK channel for at least one DL CC according to the maximum number of subframes associated with the DL CC, according to the sequence number and the sub-block number.
- the embodiments of the present invention can organize idle uplink ACK channel blocks corresponding to unpaired DL CCs into a continuous distribution, thereby better supporting dynamic scheduling of PUSCH transmissions on resource blocks corresponding to the idle uplink ACK channel blocks.
- FIG. 7 is a schematic structural diagram of a base station according to an embodiment of the present invention, where the base station in this embodiment includes: a first sequence number allocation module 701, configured to allocate a sequence number for at least one DL CC and/or a downlink subframe;
- a first sequence number allocation module 701 configured to allocate a sequence number for at least one DL CC and/or a downlink subframe;
- a first label allocation module 702 configured to divide a sub-block for an uplink ACK channel corresponding to a downlink subframe of the DL CC, and allocate a sub-block label;
- the first channel allocation module 703 is configured to allocate an uplink ACK channel to the at least one DL CC according to the sequence of incrementing the sequence number first and then incrementing the sub-block number.
- the first sending module 704 is configured to send a carrier mapping sequence number or a CC label allocated by the first sequence number assigning module;
- the first reservation module 705 is configured to reserve an uplink ACK channel for the at least one DL CC according to the maximum number of subframes associated with the DL CC, and send the reservation result to the first sequence number allocation module.
- FIG. 8 is a schematic structural diagram of a UE according to an embodiment of the present invention.
- the UE in this embodiment includes: a second channel allocation module 801, configured to allocate an uplink ACK to at least one DL CC according to an order of increasing a sequence number and then incrementing a sub-block number. channel.
- the first receiving module 802 is configured to receive a carrier mapping sequence number or a CC label, and send the carrier mapping sequence number to the second channel allocation module or send the CC label to the first mapping module.
- the first receiving module receives the CC label, it also includes:
- the first mapping module 803 is configured to map the allocated carrier mapping sequence number according to the received CC label according to a preset rule.
- the embodiments of the present invention are used in the embodiments shown in FIG. 2 and FIG. 6, and their features are not described again.
- a software product which may be stored in a non-volatile storage medium (which may be a CD-ROM, a USB flash drive, a mobile hard disk, etc.), including several
- the instructions are for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform the methods described above in accordance with various embodiments of the present invention.
- modules in the apparatus in the embodiments may be distributed in the apparatus of the embodiment as described in the embodiment, or may be correspondingly changed in one or at least one apparatus different from the embodiment.
- the modules of the above embodiments may be combined into one module, or may be further split into at least one sub-module.
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Abstract
A method and apparatus for allocating the multi-carrier ACK channel are provided in the present invention. The said method comprises: the base station assigns the sequence numbers to at least one DL CC and/or downlink subframe, divides the uplink ACK channel corresponding to the downlink subframe of the DL CC into subblocks, and assigns the subblock labels, and allocates the uplink ACK channel to at least one DL CC first in the ascending order of the said sequence numbers and then in the ascending order of the said labels. The present invention can better support dynamic scheduling PUSCH transmission on the idle resource block, and meanwhile can effectively reduce the signaling from the base station.
Description
一种多载波 ACK信道分配的方法及设备 技术领域 Method and device for multi-carrier ACK channel allocation
本发明实施例涉及通信技术,特别是涉及一种多载波 ACK信道分配的 方法及设备。 发明背景 Embodiments of the present invention relate to communication technologies, and in particular, to a method and an apparatus for multi-carrier ACK channel allocation. Background of the invention
在由 LTE ( Long Term Evolution, 长期演进 ) ***进一步演进的增强系 统 LTE- A ( Long Term Evolution - Advanced, 高级长期演进) 中, 载波聚合 ( Carrier Aggregation )技术被选中使用, 以支持更宽的带宽, 满足国际电 信联盟对于***通信技术的峰值数据速率要求。 一个 LTE***, 仅使用 一个或一对成员载波( Component Carrier ), 载波聚合的 LTE-A中, 可以同 时使用多个成员载波, 以得到更宽传输带宽。 LTE-A ***中的每个成员载 波都可能被配置成 LTE***可兼容的, 各成员载波的频谱可以是相邻的连 续频谱、 也可以是同一频带内的不相邻频谱甚至是不同频带内的不连续频 谱。 在 LTE-A***中, LTE UE ( LTE User Equipment, LTE用户设备 )只 能接入其中一个或一对成员载波进行数据收发,而 LTE-AUE根据其能力和 业务需求可以同时接入多个成员载波进行数据收发。 载波聚合技术有时也 叫频谱聚合 ( Spectrum Aggregation ) 技术, 或者带宽扩展 ( Bandwidth Extension )技术。 In the LTE-A (Long Term Evolution - Advanced) advanced system evolved by the LTE (Long Term Evolution) system, Carrier Aggregation technology is selected to support wider bandwidth. , meeting the peak data rate requirements of the International Telecommunication Union for fourth-generation communication technologies. In an LTE system, only one or a pair of Component Carriers are used. In LTE-A with carrier aggregation, multiple component carriers can be used simultaneously to obtain a wider transmission bandwidth. Each component carrier in the LTE-A system may be configured to be compatible with the LTE system, and the spectrum of each component carrier may be an adjacent contiguous spectrum, or may be a non-adjacent spectrum in the same frequency band or even in a different frequency band. Discontinuous spectrum. In an LTE-A system, an LTE User Equipment (LTE User Equipment) can only access one or a pair of component carriers for data transmission and reception, and the LTE-A UE can simultaneously access multiple members according to its capabilities and service requirements. The carrier performs data transmission and reception. Carrier aggregation technology is sometimes called Spectrum Aggregation or Bandwidth Extension.
LTE-A ***中, 每个成员载波都有独立的 HARQ ( Hybrid Automatic Repeat Request, 物理层混合自动重传请求 )过程, 且为 LTE-A UE可以配 置不同的 UL CC ( UpLink Component Carrier, 上行成员载波)和 DL CC ( Downlink Component Carrier, 下行成员载波)数目。 当 LTE-A UE同时 接入至少一个 DL CC和至少一个 UL CC收发数据时,可能要在一个 UL CC 为至少一个 DL CC 下发的至少一个 PDCCH ( Physical Downlink Control
CHannel,物理层下行控制信道)分别分配上行 ACK信道(上行应答信道)。 现有技术中, LTE-A基站为至少一个 DL CC分配 ACK信道的方法是 为每个 DL CC分别设置不同的上行 ACK信道映射起始偏置, 导致了上行 ACK信道分配的不连续, 所以每个 DL CC由空闲上行 ACK信道对应的资 源块不连续, 艮难对这些不连续的资源块加以利用。 而且现有技术需要基 站为每个起始偏置下发信令, 增加了基站的下发信令的数量。 发明内容 In the LTE-A system, each member carrier has a separate HARQ (Hybrid Automatic Repeat Request) process, and the LTE-A UE can be configured with different UL CCs (UpLink Component Carriers). Carrier) and the number of DL CCs (downlink component carriers). When the LTE-A UE simultaneously accesses at least one DL CC and at least one UL CC to transmit and receive data, at least one PDCCH (Physical Downlink Control) that may be sent by one UL CC to at least one DL CC may be required. CHannel, physical layer downlink control channel) respectively allocates an uplink ACK channel (uplink response channel). In the prior art, the LTE-A base station allocates an ACK channel to at least one DL CC by setting different uplink ACK channel mapping start offsets for each DL CC, which causes discontinuity of uplink ACK channel allocation, so each The DL CCs are discontinuous by the resource blocks corresponding to the idle uplink ACK channel, and it is difficult to utilize these discontinuous resource blocks. Moreover, the prior art requires the base station to send signaling for each initial offset, which increases the number of signaling that the base station sends. Summary of the invention
本发明实施例提供了一种多载波 ACK信道分配的方法、 设备及***。 本发明实施例提供了一种多载波 ACK信道分配的方法, 包括: 为至少一个 DL CC和 /或下行子帧分配序号; Embodiments of the present invention provide a method, device, and system for multi-carrier ACK channel allocation. An embodiment of the present invention provides a method for allocating a multi-carrier ACK channel, including: allocating a sequence number to at least one DL CC and/or a downlink subframe;
为 DL CC的下行子帧对应的上行 ACK信道划分子块, 并分配子块标号; 按照先递增上述序号, 再递增上述子块标号的顺序来为至少一个 DL CC分配上行 ACK信道。 Sub-blocks are allocated for the uplink ACK channel corresponding to the downlink subframe of the DL CC, and the sub-block labels are allocated; the uplink ACK channel is allocated to the at least one DL CC according to the sequence of incrementing the above-mentioned sequence numbers and incrementing the sub-block labels.
本发明实施例提供了一种基站, 包括: An embodiment of the present invention provides a base station, including:
第一序号分配模块, 用于为至少一个 DL CC和 /或下行子帧分配序号; 第一标号分配模块, 用于为每个下行子帧对应的上行 ACK信道划分子 块, 并分配子块标号; a first sequence number allocation module, configured to allocate a sequence number to at least one DL CC and/or a downlink subframe; a first label allocation module, configured to divide a sub-block for an uplink ACK channel corresponding to each downlink subframe, and allocate a sub-block label ;
第一信道分配模块, 用于按照先递增上述序号, 再递增上述子块标号 的顺序来为至少一个 DL CC分配上行 ACK信道。 And a first channel allocation module, configured to allocate an uplink ACK channel to the at least one DL CC according to the sequence of incrementing the foregoing sequence number and then incrementing the foregoing sub-block number.
本发明实施例提供了一种 UE, 包括: An embodiment of the present invention provides a UE, including:
第二信道分配模块, 用于按照先递增序号, 再递增子块标号的顺序来 为至少一个 DL CC分配上行 ACK信道。 And a second channel allocation module, configured to allocate an uplink ACK channel to the at least one DL CC according to the order of increasing the sequence number and then incrementing the sub-block number.
本发明实施例提供了一种多载波 ACK信道分配的***, 包括:
上述基站用于为每个下行子帧对应的上行 ACK信道划分子块, 并分配 子块标号; 用于按照先递增上述序号, 再递增上述子块标号的顺序来为至 少一个 DL CC分配上行 ACK信道; 用于按照先递增上述序号, 再递增上述 标号的顺序来为至少一个 DL CC分配上行 ACK信道。 An embodiment of the present invention provides a system for multi-carrier ACK channel allocation, including: The base station is configured to allocate a sub-block for the uplink ACK channel corresponding to each downlink subframe, and allocate a sub-block label; and configured to allocate an uplink ACK to the at least one DL CC according to the sequence of incrementing the sequence number and then incrementing the sub-block label. Channel; configured to allocate an uplink ACK channel for at least one DL CC according to an order of increasing the foregoing sequence number and then incrementing the foregoing label.
本发明实施例提供的一种多载波 ACK信道分配的方法、 设备及***在 分配不同 DL CC实际关联子帧对应的上行 ACK信道时, 能够先递增序号再 递增子块标号将与不成对 DL CC对应的由较少实际关联子帧数和较小 nCFI 值所造成的空闲上行 ACK信道块组织成连续分布的, 因而能够更好地支持 在与这些空闲上行 ACK信道块对应的资源块上动态调度物理层上行共享信 道。 附图简要说明 When a method, a device, and a system for allocating a multi-carrier ACK channel according to an embodiment of the present invention allocate an uplink ACK channel corresponding to an actual associated subframe of a different DL CC, the sequence number of the sub-block can be incremented and the paired DL CC Corresponding idle uplink ACK channel blocks caused by fewer actual associated subframes and smaller n CFI values are organized into continuous distribution, thus being able to better support dynamics on resource blocks corresponding to these idle uplink ACK channel blocks. The physical layer uplink shared channel is scheduled. BRIEF DESCRIPTION OF THE DRAWINGS
图 1为现有技术 LTE-A TDD ( LTE-A Time Division Duplex, LTE-A时 分双工) ***中 ACK信道分配结果示意图; 1 is a schematic diagram of an ACK channel allocation result in a LTE-A TDD (LTE-A Time Division Duplex) system;
图 2为本发明分配上行 ACK信道的实施例示意图; 2 is a schematic diagram of an embodiment of allocating an uplink ACK channel according to the present invention;
图 3为 PDCCH分配的上行 ACK信道分布示意图; FIG. 3 is a schematic diagram of an uplink ACK channel distribution allocated by a PDCCH;
图 4为 PDCCH分配的上行 ACK信道分布示意图; 4 is a schematic diagram of an uplink ACK channel distribution allocated by a PDCCH;
图 5为本发明实施例 ACK信道分配结果示意图; FIG. 5 is a schematic diagram of an ACK channel allocation result according to an embodiment of the present invention; FIG.
图 6为本发明为至少一个 DL CC预留上行 ACK信道的实施例示意图; 图 7为本发明实施例基站的结构示意图; 6 is a schematic diagram of an embodiment of an uplink ACK channel reserved for at least one DL CC according to the present invention; FIG. 7 is a schematic structural diagram of a base station according to an embodiment of the present invention;
图 8为本发明实施例 UE的结构示意图。 实施本发明的方式 FIG. 8 is a schematic structural diagram of a UE according to an embodiment of the present invention. Mode for carrying out the invention
本发明实施例提供了一种载波聚合下的 ACK信道分配方法及设备, 下 面对本发明实施例的技术方案做进一步的详细描述。 The embodiment of the present invention provides a method and a device for allocating an ACK channel under carrier aggregation, and further describes the technical solution of the embodiment of the present invention in further detail.
发明人在实现本发明实施例的过程中, 发现 LTE-A的现有技术中基站
为至少一个 DL CC分配上行 ACK信道的方法是在为每个 DL CC分别设置 不同的 ACK信道映射起始偏置, 并且需要基站为每个起始偏置下发信令。 在这种分配方法里不成对 DL CC对应的由较少实际关联子帧数和较小" ^ 值所造成的空闲上行 ACK信道块是不连续分布的, 所以很难将这些空闲的 资源动态调度到数据传输上;并且由于要对每个 DL CC分别下发起始偏置, 增加了基站的下发信令的数量。 In the process of implementing the embodiments of the present invention, the inventor finds a base station in the prior art of LTE-A. The method of allocating an uplink ACK channel for at least one DL CC is to set a different ACK channel mapping start offset for each DL CC, and the base station is required to signal each start offset. In this allocation method, the idle uplink ACK channel block caused by the less actual number of associated subframes and the smaller "^ value corresponding to the DL CC is discontinuously distributed, so it is difficult to dynamically schedule these idle resources. Up to the data transmission; and because the initial offset is to be sent separately for each DL CC, the number of signaling sent by the base station is increased.
例如设第 i个 DL CC设置的上行 ACK信道映射起始偏置为 N CCHJ , 则
示为第 i个 DL CC的 CCE ( Control Channel Element, 控制信道单元 )标号 到上行 ACK信道标号 映射预留的上行 ACK 信道数目。在每个成员载波内采用类似 LTE***中 nCCE到 CCH映射的方式。 For example, if the uplink ACK channel mapping start offset of the ith DL CC setting is N CCHJ , then The CCE (Control Channel Element) of the i-th DL CC is shown as the number of uplink ACK channels reserved for the uplink ACK channel label mapping. A method similar to n CCE to CCH mapping in the LTE system is adopted in each component carrier.
LTE TDD中" CC£到" 的映射方式是: 根据上下行子帧配比和 HARQ 定时关系, 为每个上行子帧定义了下行关联子帧集索引 : ,…,^^ , 如下表 1所示, 以解决在一个上行子帧为至少一个下行子帧下发的 PDCCH 分别分配上行 ACK信道的问题。在下行关联子帧集索引 : ,… ,
}中, 集合中元素的数目 M表示在该上行子帧为 M个下行子帧下发的 PDCCH分 别分配上行 ACK信道;元素的顺序、即tm的下标 w(0≤w≤M - 1) ,表示 M个 下行子帧在分配上行 ACK信道时的子帧映射顺序;元素的取值 km表示对应 的下行子帧或特殊子帧是从该上行子帧开始往前数相应数目子帧后相应的 那 个 子 帧 , 从 而 给 出 了 在 该 上 行子 帧 反馈 ACK/NACK ( ACKnowledgement/Negative-ACKnowledgement确认应答 /否认应答) 的 下行子帧集合。 以上下行子帧配比 3和子帧 2为例, 在该上行子帧内反馈 M = 3个子帧的 ACK/NACK, 集合 中元素的数值 "7、 6、 11" 分别指明了 这 3个子帧分别是前一个无线帧的第 5、 6和 1子帧。
上下行子 无线帧内子帧标号 w The " CC £ to" mapping method in the LTE TDD is: According to the uplink and downlink subframe ratio and the HARQ timing relationship, the downlink associated subframe set index is defined for each uplink subframe: ,...,^^ , as shown in Table 1 below. The problem is that the uplink ACK channel is allocated to the PDCCHs that are sent in at least one downlink subframe in one uplink subframe. In the downlink associated subframe set index: ,... , In the }, the number of elements in the set M indicates that the uplink ACK channel is allocated to the PDCCHs that are sent by the M subframes in the uplink subframe; the order of the elements, that is, the subscript w of t m (0 ≤ w ≤ M - 1) The sub-frame mapping order of the M downlink sub-frames when the uplink ACK channel is allocated; the value k m of the element indicates that the corresponding downlink sub-frame or special sub-frame is the corresponding number of sub-frames starting from the uplink sub-frame The corresponding subframe is followed by a downlink subframe set that feeds back ACK/NACK (ACKnowledgement/Negative-ACKnowledgement acknowledgement/deny response) in the uplink subframe. The above downlink subframe ratio 3 and subframe 2 are taken as an example, and ACK/NACK of M = 3 subframes is fed back in the uplink subframe, and the values "7, 6, 11" of the elements in the set respectively indicate that the three subframes are respectively Is the 5th, 6th, and 1st subframe of the previous radio frame. Up-and-down sub-radian intra-frame subframe label w
帧配比 0 1 2 3 4 5 6 7 8 9 Frame ratio 0 1 2 3 4 5 6 7 8 9
0 6 4 6 40 6 4 6 4
1 7, 6 4 7, 6 41, 7, 6 4 7, 6 4
2 8, 7, 4, 6 8, 7, 4, 62 8, 7, 4, 6 8, 7, 4, 6
3 7, 6, 11 6, 5 5, 4 3 7, 6, 11 6, 5 5, 4
6, 5, 6, 5,
4 12, 8, 7, 11 4 12, 8, 7, 11
4, 7 4, 7
5 13, 12, 9, 8, 7, 5, 4, 11, 6 5 13, 12, 9, 8, 7, 5, 4, 11, 6
6 7 7 5 7 7 6 7 7 5 7 7
对于在与下行关联子帧集索引 中元素 对应的下行子帧或特殊子帧 中调度的某个 PDCCH,假设其占用的起始 CCE标号为 nCCE ,设对应分配的 上行 ACK信道标号为 则先从集合 ^ {0,1,2,3}中选择一个; 7值使得For a certain PDCCH scheduled in a downlink subframe or a special subframe corresponding to an element in the downlink associated subframe set index, it is assumed that the occupied initial CCE label is n CCE , and the corresponding allocated uplink ACK channel label is first Select one from the set ^ {0,1,2,3}; 7 values make
Np < nCCE < Np+1 , 再将得到的 ρ值代入 N p < n CCE < N p+1 , and then substitute the obtained ρ value
np( uccH = (M - m - \) x Np + m x Np+l + nCCE + N CCH Np ( uccH = (M - m - \) x N p + mx N p+l + n CCE + N CCH
中计算得到分配的上行 ACK信道标号,其中 ^^^表示根据 CCE标号映射 的上行 ACK信道在所有 PUCCH ( Physical Uplink Control CHannel, 物理层 上 行 控 制 信 道 ) 格 式 1/la/lb 信 道 中 的 起 始 偏 置 、 The calculated uplink ACK channel label is calculated, where ^^^ indicates the starting offset of the uplink ACK channel mapped according to the CCE label in all PUCCH (Physical Layer Uplink Control CHannel) format 1/la/lb channel Set,
Np = max {0,
. 是用资源块数目表示的下行***带 宽、 N 是一个资源块在频域上占用的连续子载波数目、 L」表示向下取整 运算。 N p = max {0, Is the downlink system bandwidth represented by the number of resource blocks, N is the number of consecutive subcarriers occupied by a resource block in the frequency domain, and L" represents a rounding down operation.
从表 1可以看到, LTE TDD***采用上下行子帧配比 1和 3时, 在不 同上行子帧内下行关联子帧集索引 中元素数目不同, 此时在设置上行 ACK信道映射起始偏置 A¾COT时, 要根据该配比上下行关联子帧集索引 中的最大元素数目来设置。 例如在上下行子帧配比 3 时, 下行关联子帧集 索引 中的最大元素数目为 3 , 即要根据 3个下行子帧的 CCE数目来预留 上行 ACK信道资源。 当一个上行子帧的下行关联子帧集索引 中元素数目
较少时, 例如上下行子帧配比 3中的子帧 3和子帧 4中, 预留的上行 ACK 信道资源会超出实际需求, 这些空闲上行 ACK信道对应的资源块在 LTE TDD***中可以动态地被调度用于 PUSCH传输。 It can be seen from Table 1 that when the LTE TDD system adopts the uplink and downlink subframe ratios 1 and 3, the number of elements in the downlink associated subframe set index is different in different uplink subframes, and the uplink ACK channel mapping starting offset is set at this time. When A3⁄4 COT is set, it is set according to the maximum number of elements in the index of the uplink and downlink associated subframe set. For example, when the uplink and downlink subframe ratio is 3, the maximum number of elements in the downlink associated subframe set index is 3, that is, the uplink ACK channel resource is reserved according to the number of CCEs of the three downlink subframes. Number of elements in the index of the downlink associated subframe set of an uplink subframe When there are few, for example, in subframe 3 and subframe 4 in the uplink and downlink subframe ratio 3, the reserved uplink ACK channel resources may exceed the actual demand, and the resource blocks corresponding to the idle uplink ACK channels may be dynamic in the LTE TDD system. The ground is scheduled for PUSCH transmission.
然而在将 LTE***中„ 到 映射的方式用到 LTE-A TDD***中 nCCE nPUCCH However, in the LTE system, the mapping method is applied to the nCCE n PUCCH in the LTE-A TDD system.
后, 这些空闲的上行 ACK信道就不连续了, 很难同时动态地被调度用于 PUSCH传输。 在 LTE-A TDD***中当为在相同 UL CC映射上行 ACK信 道的至少一个 DL CC中的每个 DL CC分别设置不同的上行 ACK信道映射 起始偏置时, 也要根据与每个 DL CC对应的下行关联子帧集索引 中的最 大元素数目来设置。 图 1 给出了一个例子, 其中所有成员载波都采用上下 行子帧配比 3 , 且在相同的 UL CC为在 3个 DL CC下发的 PDCCH分配对 应的上行 ACK信道;从表 1可以看到上下行子帧配比 3时下行关联子帧集 索引中最多有 3个子帧,所以设置上行 ACK信道映射起始偏置时根据 3个 子帧来设置; 在 UL CC的子帧 3和 4中, 为各 DL CC的下行关联子帧集索 引中的 2个子帧分配的上行 ACK信道分别如图 1中灰色和黑色小块所示, 还有与 1个子帧对应的预留上行 ACK信道空闲, 如图 1中白色小块所示, 其中每个小块都对应着至少一个标号连续的上行 ACK信道。此外当***负 载较轻时, 这 3 个 DL CC的下行子帧中, PDCCH信道所占用的 OFDM ( Orthogonal Frequency Division Multiplexing, 正交频分复用 )符号数目 nCFI 较小、 例如" Cf =2 , 那么 PDCCH信道占用的起始 CCE 标号" CC£总小于 P = "OT = 2时的^取值。 在分配上行 ACK信道后, 分配给每个子帧的第三 个小块也是空闲的上行 ACK信道。 此时所有的空闲上行 ACK信道如图 1 所示, 从图中可以看到, 为各 DL CC预留的上行 ACK信道中的空闲上行 ACK信道是不连续分布的, 这些不连续的空闲上行 ACK信道对应的资源 块无法在数据传输时被利用, 所以形成了浪费。 After that, these idle uplink ACK channels are not continuous, and it is difficult to be dynamically scheduled for PUSCH transmission at the same time. In the LTE-A TDD system, when different uplink ACK channel mapping start offsets are respectively set for each DL CC in at least one DL CC of the same UL CC mapping uplink ACK channel, also according to each DL CC The corresponding maximum number of elements in the downlink associated subframe set index is set. Figure 1 shows an example in which all component carriers use the uplink-downlink subframe ratio of 3, and allocate the corresponding uplink ACK channel to the PDCCHs sent by the three DL CCs in the same UL CC; Up to 3 subframes in the downlink associated subframe set index when the uplink-downlink subframe ratio is 3, so the uplink ACK channel mapping start offset is set according to 3 subframes; in subframes 3 and 4 of the UL CC. The uplink ACK channels allocated for the two subframes in the downlink associated subframe set index of each DL CC are respectively shown in the gray and black small blocks in FIG. 1, and the reserved uplink ACK channel corresponding to one subframe is idle. As shown in the white small block in Figure 1, each of the small blocks corresponds to at least one consecutive upstream ACK channel. Also when the system is lightly loaded, the three downlink sub-frames in DL CC, the channel occupied by the PDCCH OFDM (Orthogonal Frequency Division Multiplexing, orthogonal frequency-division multiplexing) a smaller number of symbols n CFI, e.g. "Cf = 2 Then, the initial CCE label occupied by the PDCCH channel " CC £ is less than P = " OT = 2). After the uplink ACK channel is allocated, the third small block allocated to each subframe is also an idle uplink ACK. At this time, all the idle uplink ACK channels are as shown in Figure 1. As can be seen from the figure, the idle uplink ACK channels in the uplink ACK channels reserved for each DL CC are discontinuously distributed, and these discontinuous idles The resource block corresponding to the uplink ACK channel cannot be utilized during data transmission, so waste is formed.
本发明实施例通过分配规则将由较少实际关联子帧数和较小 值所 造成的空闲上行 ACK信道块组织成连续分布的, 可以将由这些空闲上行
ACK信道对应的资源块集中起来, 更好地支持在这些资源块上动态调度 PUSCH传输。 同时可以有效减少基站下发的信令。 图 2为本发明至少一个 DL CC的下行子帧分配序号、 分配子块标号, 再分配上行 ACK信道的实施例示意图。 本实施例包括: In the embodiment of the present invention, an idle uplink ACK channel block caused by a small number of actually associated subframes and a small value is organized into a continuous distribution by an allocation rule, and these idle uplinks may be used. The resource blocks corresponding to the ACK channel are aggregated to better support dynamic scheduling of PUSCH transmissions on these resource blocks. At the same time, the signaling sent by the base station can be effectively reduced. 2 is a schematic diagram of an embodiment of a downlink subframe allocation sequence number, an allocation sub-block number, and an uplink ACK channel of at least one DL CC according to the present invention. This embodiment includes:
步骤 201 , 为至少一个 DL CC和 /或下行子帧分配序号; Step 201: Assign a sequence number to at least one DL CC and/or a downlink subframe.
步骤 202, 为 DL CC的下行子帧对应的上行 ACK信道划分子块, 并分配 子块标号; Step 202: Divide a sub-block for an uplink ACK channel corresponding to a downlink subframe of the DL CC, and allocate a sub-block label;
步骤 203 , 按照先递增上述序号, 再递增上述子块标号的顺序来为至少 一个 DL CC分配上行 ACK信道。 Step 203: Allocate an uplink ACK channel to the at least one DL CC according to the order of increasing the foregoing sequence number and then incrementing the foregoing sub-block number.
本实施例适用于 LTE-A TDD和 LTE-A FDD***中, 基站为 DL CC分 配上行 ACK信道的过程中。 基站在分配上行 ACK信道之前, 先将 DL CC 分为成对的和不成对的, 再为它们分配载波映射序号, 对于 TDD***, 在 分配载波映射序号之后还需分配子帧映射序号。 根据上述序号和子块标号, 通过计算公式, 得到要分配的上行 ACK信道的 4 Cff。 下面对每个步骤做 伴细的说明。 This embodiment is applicable to the LTE-A TDD and LTE-A FDD systems, and the base station allocates an uplink ACK channel to the DL CC. Before allocating the uplink ACK channel, the base station divides the DL CC into pairs and unpaired, and then assigns the carrier mapping sequence number to them. For the TDD system, the subframe mapping sequence number needs to be allocated after the carrier mapping sequence number is allocated. According to the above sequence number and sub-block number, the 4 Cff of the uplink ACK channel to be allocated is obtained by calculating the formula. The following is a detailed description of each step.
在 LTE-A***中 , LTE UE只能同时接入一个 UL CC和一个 DL CC , LTE-A UE能同时接入 A 个 UL CC和 ADi个 DL CC , 其中 Am和 ADi都是正 整数且两者可以不等。 In the LTE-A system, the LTE UE can only access one UL CC and one DL CC at the same time, and the LTE-A UE can simultaneously access A UL CC and A Di DL CC, where both A m and A Di are positive integers. And the two can be different.
对 LTE-A UE, 当配置的 DL CC数目 > 1且 PDCCH分散在配置的 DL CC上传输时 , 根据 LTE-A UE PDCCH所在 DL CC和上行 ACK信道所 在 UL CC的对应关系, 有可能在相同 UL CC为在多个 DL CC下发给该 LTE-A UE的 PDCCH分配上行 ACK信道。一种对应关系是将为多个 DL CC 下发的 PDCCH分配的上行 ACK信道分散在配置的 ^个 UL CC, 如图 3 示例,其中为某一个 LTE-A UE配置了 DL CC 1、 DL CC 2、 DL CC 3、 UL CC 1和 UL CC 2,在 DL CC 1下发的 PDCCH在 UL CC 1分配对应的上行 ACK
信道, 在 DL CC 2和 DL CC 3下发的 PDCCH在 UL CC 2分配对应的上行 ACK信道。 另一种对应关系是将配置的所有 DLCC下发的 PDCCH分配的 上行 ACK信道集中在配置的某个 UL CC ,如图 4示例,其中为某一个 LTE-A UE配置了 DLCC 1、 DLCC 2、 DLCC 3、 ULCC 1 ^ULCC2, 在 DLCC 1、 DL CC 2和 DL CC 3下发的 PDCCH都集中在 UL CC 2分配对应的上行 ACK信道。 其中, 在对示例的描述中, 是从一个 LTE-AUE的角度出发的。 从***的角度看 ,各 LTE-A UE的 PDCCH所在 DL CC和上行 ACK信道所 在 ULCC对应关系可以相同, 也可以不同。 For the LTE-A UE, when the number of configured DL CCs is > 1 and the PDCCH is transmitted on the configured DL CC, it may be the same according to the correspondence between the DL CC where the LTE-A UE PDCCH is located and the UL CC where the uplink ACK channel is located. The UL CC allocates an uplink ACK channel to a PDCCH that is transmitted to the LTE-A UE under a plurality of DL CCs. A corresponding relationship is that the uplink ACK channels allocated for the PDCCHs sent by the multiple DL CCs are dispersed in the configured UL CCs, as shown in the example in FIG. 3, where DL CC 1 and DL CCs are configured for one LTE-A UE. 2. DL CC 3, UL CC 1 and UL CC 2, the PDCCH sent by DL CC 1 is assigned an uplink ACK corresponding to UL CC 1 The PDCCH transmitted by the DL CC 2 and the DL CC 3 allocates a corresponding uplink ACK channel in the UL CC 2. Another type of correspondence is that the uplink ACK channels allocated by the PDCCHs that are allocated by all the configured DL CCs are concentrated in a certain UL CC, as shown in FIG. 4 , where DL CC 1 and DL CC are configured for a certain LTE-A UE. DLCC 3, ULCC 1 ^ULCC2, PDCCHs transmitted in DLCC 1, DL CC 2, and DL CC 3 are all concentrated on the uplink ACK channel corresponding to the UL CC 2 allocation. Among them, in the description of the example, it is from the perspective of an LTE-AUE. From a system perspective, the correspondence between the DL CC where the PDCCH of each LTE-A UE and the uplink ACK channel are located may be the same or different.
从***的角度看,对一个 UL CC,只要有至少一个 LTE-AUE和 /或 LTE UE在 DL CC 下发的 PDCCH在该 UL CC分配对应的上行 ACK信道, 那 么就要在该 UL CC为 DL CC i下发的 PDCCH预留和分配上行 ACK信道。 From a system perspective, for a UL CC, as long as there is at least one LTE-AUE and/or a PDCCH that is sent by the LTE UE in the DL CC to allocate a corresponding uplink ACK channel in the UL CC, then the UL CC is the DL. The PDCCH delivered by CC i reserves and allocates an uplink ACK channel.
为描述方便, 在本发明实施例中, 如果一个 ULCC和一个 DLCC能够 被一个 LTEUE同时接入,称为一组成对成员载波, 并将彼此称为对方的成 对成员载波; 否则称为一组不成对成员载波, 并将彼此称为对方的不成对 成员载波。 在图 3和图 4中, ULCC1和 DLCC 1、 ULCC 2和 DLCC 2, 就是这样的两组成对成员载波;其余情况下的一个 UL CC和一个 DL CC则 构成一组不成对成员载波。 For convenience of description, in the embodiment of the present invention, if one ULCC and one DLCC can be simultaneously accessed by one LTE UE, it is called a component pair component carrier, and will be called a pair of component carriers of each other; otherwise, it is called a group. Unpaired member carriers, and will be referred to each other as the unpaired member carrier of the other party. In Figures 3 and 4, ULCC1 and DLCC 1, ULCC 2 and DLCC 2 are such two component pairs of component carriers; in the remaining case, one UL CC and one DL CC constitute a set of unpaired component carriers.
在步骤 201中当基站要在某一个 ULCC, 为 4)(4)≥1)个 DLCC ,… 。 下发的 PDCCH信道分配上行 ACK信道时, 对 LTE-A TDD***, 可以类 似 LTE TDD***, 根据成员载波上下行子帧配比设置和 HARQ定时关系, 在 UL CC为 4)个 DL CC分别定义下行关联子帧集索引。 当上下行子帧配 比设置相同时, 推荐采用与 LTETDD***相同的下行关联子帧集索引, 如 表 1所示。上述与每个 DL CC关联的实际子帧数目是为 UL CC的当前上行 子帧定义的下行关联子帧集索引中元素的数目。 上述分配序号可以是对至 少一个 DLCC的至少一个下行关联子帧直接统一编号分配, 考虑到下行关 联子帧集索引中元素的顺序已经给出了 DLCC内的子帧映射序号, 推荐上
述分配的序号由载波映射序号和子帧映射序号组成。 上述为在相同 UL CC 映射上行 ACK信道的至少一个 DL CC的每个下行关联子帧分配序号具体 为: 为 4)个 DL CC中的不成对 DL CC分配载波映射序号 根据下行关联 子帧集索引的元素顺序为每个 DL CC内的每个关联下行子帧分配子帧映射 序号 w。 In step 201, when the base station is to be in a certain ULCC, it is 4) (4) ≥ 1) DLCC, .... When the uplink ACK channel is allocated to the PDCCH channel, the LTE-A TDD system can be similar to the LTE TDD system, according to the uplink and downlink subframe ratio setting of the component carrier and the HARQ timing relationship, and the UL CC is defined as 4) DL CCs respectively. Downlink associated subframe set index. When the uplink and downlink subframe ratio settings are the same, it is recommended to use the same downlink associated subframe set index as the LTE TDD system, as shown in Table 1. The actual number of subframes associated with each DL CC is the number of elements in the downlink associated subframe set index defined for the current uplink subframe of the UL CC. The foregoing allocation sequence number may be a direct unified number allocation of at least one downlink associated subframe of the at least one DL CC, and the subframe mapping sequence number in the DL CC has been given in consideration of the order of the elements in the downlink associated subframe set index. The sequence number assigned is composed of a carrier mapping sequence number and a subframe mapping sequence number. The sequence number assigned to each downlink associated subframe of the at least one DL CC that maps the uplink ACK channel in the same UL CC is specifically: assigning a carrier mapping sequence number to the unpaired DL CC in the 4) DL CCs according to the downlink associated subframe set index The element order is assigned a subframe mapping sequence number w for each associated downlink subframe within each DL CC.
对 LTE-A FDD***, 上述与每个 DL CC关联的实际子帧数目是 1。 上 述为在相同 UL CC映射上行 ACK信道的至少一个 DL CC的每个下行关联 子帧分配序号具体为: 为 4个 DL CC中的不成对 DL CC分配载波映射序 号 For the LTE-A FDD system, the actual number of subframes associated with each DL CC is 1. The sequence number assigned to each downlink associated subframe of the at least one DL CC of the same UL CC mapping uplink ACK channel is specifically: assigning a carrier mapping number to the unpaired DL CC of the 4 DL CCs
在分配载波映射序号 的过程中, 只为 4个 DL CC中的不成对 DL CC 分配载波映射序号, 这是为了让成对 DL CC采用 LTE***的上行 ACK信 道分配机制, 以维持对 LTE UE的后向兼容性。 即上述至少一个 DL CC是 至少一个不成对 DL CC。 In the process of allocating the carrier mapping sequence number, the carrier mapping sequence number is only allocated for the unpaired DL CCs of the four DL CCs, so that the paired DL CCs adopt the uplink ACK channel allocation mechanism of the LTE system to maintain the LTE UE. Backward compatibility. That is, the at least one DL CC is at least one unpaired DL CC.
考虑到为两个 DL CC分配相同载波映射序号会导致分配的上行 ACK 信道处在相同区域, 可能存在 DL CC间的上行 ACK信道冲突, 推荐为不 同 DL CC分配不同的载波映射序号。 当有且只有 DL CC。是成对成员载波 且 4≥ 2时, 为 4)个 DL CC中的不成对 DL CC分别分配不同载波映射序号 可以看作集合 {' ,···, U到集合 {0,···, 4 _2}的——映射。 Considering that assigning the same carrier mapping sequence number to two DL CCs causes the allocated uplink ACK channels to be in the same area, there may be uplink ACK channel collisions between DL CCs. It is recommended to assign different carrier mapping numbers to different DL CCs. When there is and only DL CC. When a pair of component carriers is 4 ≥ 2 , assigning different carrier mapping numbers to the unpaired DL CCs in 4) DL CCs can be regarded as a set {' , ···, U to the set {0,···, 4 _ 2 } - mapping.
在为不成对 DL CC分配载波映射序号后, 基站可以通过如下方式将分 配的载波映射序号通知给 LTE-A UE。方式一,基站在 UL CC的成对 DL CC 广播通知为不成对 DL CC分配的载波映射序号。 方式二, 根据预设规则按 照通知的不成对 DL CC标号来映射分配的载波映射序号, 进一步地, 上述 预设规则可以是载波标号到载波映射序号的——映射。 方式三, 对 LTE-A UE, 基站通过 UE专有的信令至少通知该 LTE-A UE配置的不成对 DL CC 的载波映射序号。
在步骤 202中, 基站第一标号分配模块为 DL CC的下行子帧对应的上行 ACK信道划分子块, 并分配子块标号。 After assigning the carrier mapping sequence number to the unpaired DL CC, the base station may notify the LTE-A UE of the assigned carrier mapping sequence number in the following manner. In the first mode, the base station transmits a carrier mapping sequence number assigned to the unpaired DL CC in the paired DL CC broadcast of the UL CC. Manner 2: The assigned carrier mapping sequence number is mapped according to the unpaired DL CC label of the notification according to the preset rule. Further, the preset rule may be a mapping of the carrier label to the carrier mapping sequence number. Manner 3: For the LTE-A UE, the base station notifies at least the carrier mapping sequence number of the unpaired DL CC configured by the LTE-A UE by using UE-specific signaling. In step 202, the first label allocation module of the base station divides the sub-blocks for the uplink ACK channel corresponding to the downlink subframe of the DL CC, and allocates the sub-block labels.
上述划分子块是指根据 PDCCH信道占用不同 OFDM符号数目 nCFI时的 不同 CCE数目进行。 The above divided sub-blocks are performed according to different CCE numbers when the PDCCH channel occupies a different number of OFDM symbols n CFI .
在步骤 202和 203的展开讨论中,假设步骤 201是为 4)个 DL CC中的不成 对 DL CC分配载波映射序号 上述至少一个 DL CC是至少一个不成对 DL CC ,且设不成对 DL CC的数目为 — impair , \< A _ impair <A^, 0<q<A_ impair。 In the expanded discussion of steps 202 and 203, it is assumed that step 201 is to assign a carrier mapping sequence number to the unpaired DL CCs of the 4) DL CCs. The at least one DL CC is at least one unpaired DL CC and is not paired with DL CCs. The number is - impair , \< A _ impair <A^, 0<q<A_ impair.
对于分配了载波映射序号 的 DL CC, 取值为 P时的 CCE数目为 NZE =
其中 表示分配了载波映射序号 的 DL cc的用资源块数目表示的带宽, Nc = i, L」表示向下取整运算。 For a DL CC to which a carrier mapping sequence number is assigned, the number of CCEs when the value is P is NZ E = The bandwidth indicated by the number of resource blocks of DL cc to which the carrier map number is assigned, N c = i, L" represents a rounding operation.
对分配了载波映射序号 ^的 DL CC,与一个下行子帧对应的上行 ACK信 道在划分子块后, 设前 P个子块由 N 个上行 ACK信道组成, 那么第 P个子 块由 Nq,d 个标号连续的上行 ACK信道组成。 N 表示分配了载波映射 序号 的 DL CC PDCCH信道占用的 OFDM符号数目 " OT =P时分配的上行 ACK信道数目。 For the DL CC to which the carrier mapping sequence number ^ is allocated, the uplink ACK channel corresponding to one downlink subframe is divided into sub-blocks, and the first P sub-blocks are composed of N uplink ACK channels, then the Pth sub-block is composed of N q , d The number consists of consecutive uplink ACK channels. N represents the number of OFDM symbols occupied by the DL CC PDCCH channel to which the carrier mapping sequence number is allocated "the number of uplink ACK channels allocated when OT = P.
当为每个 CCE分配一个上行 ACK信道时, 有
其中 maX{x,j}表示取 X和 y中较大者运算。 考虑到为不成对 DL CC下发的 PDCCH 信道分配对应上行 ACK信道只可能发生于 LTE-A UE, 不需要考虑对 LTE UE的后向兼容性。 对不成对 DLCC分配上行 ACK信道时, 可以引入一些开 销压缩机制来降低相应上行 ACK信道的开销。 一种开销压缩机制是基站广 播通知为不成对 DL CC预留的上行 ACK信道数目, 此时对于 LTE-A FDD系 统
, 对 LTE-A TDD 系 统 A^=min{N ,max{0,N }} , 其中 N^表示 LTE-A FDD***中为分配了载 波映射序号 的不成对 DL CC对应的下行子帧预留的上行 ACK信道数目, ^表示 LTE-A TDD***中为分配了载波映射序号 的不成对 DL CC的下 行关联子帧集索引第 w个元素对应的下行子帧预留的上行 ACK信道数目,
min{x,j }表示取 x和 y中较小者运算。 另一种开销压缩机制是基站广播通知 为分配了载波映射序号 的不成对 DL CC预留上行 ACK信道时所使用的资 源压缩因子 , 其中 是正整数, 此时 , 其中 Π表示
When assigning an uplink ACK channel to each CCE, there is Where ma X {x,j} denotes the larger of X and y. It is considered that the allocation of the corresponding uplink ACK channel for the PDCCH channel delivered by the unpaired DL CC may only occur in the LTE-A UE, and there is no need to consider backward compatibility with the LTE UE. When an uplink ACK channel is allocated to an unpaired DLCC, some overhead compression mechanism may be introduced to reduce the overhead of the corresponding uplink ACK channel. An overhead compression mechanism is that the base station broadcasts the number of uplink ACK channels that are reserved for unpaired DL CCs, at this time for the LTE-A FDD system. For the LTE-A TDD system A^=min{N , m ax {0,N }} , where N^ denotes the downlink subframe pre-corresponding to the unpaired DL CC to which the carrier mapping sequence number is assigned in the LTE-A FDD system The number of uplink ACK channels reserved, where ^ represents the number of uplink ACK channels reserved for the downlink subframe corresponding to the wth element of the downlink associated subframe set index of the unpaired DL CC to which the carrier mapping sequence number is allocated in the LTE-A TDD system, Min{x,j } means taking the smaller of x and y. Another type of overhead compression mechanism is a resource compression factor used by a base station to broadcast an uplink ACK channel reserved for an unpaired DL CC to which a carrier mapping sequence number is assigned, where is a positive integer, where Π represents
向上取整运算。 Round up the operation.
上述分配子块标号是根据 CCE标号" CC£来分配子块标号^。 进一步地, CCE标号 nCCE是 UE PDCCH信道所占用的 CCE的标号。当 PDCCH信道占用多 个 CCE时还可以是 PDCCH信道占用的起始 CCE标号。 The above-mentioned allocation sub-block label is assigned a sub-block label according to the CCE label " CC £ . Further, the CCE label n CCE is a label of the CCE occupied by the UE PDCCH channel. When the PDCCH channel occupies multiple CCEs, it may also be a PDCCH channel. The starting CCE label occupied.
根据 CCE标号 nCCE来分配子块标号 P的具体过程为: 对分配了载波映射 序号 的下行子帧内标号为" CC£的 CCE ,从集合 {0, 1, 2, 3}中选择一个 P值使 得 Nq,p≤fO< Nq,p+l , 分配子块标号 其中 /("CC£)表示 CCE标号" CC£的函 数。 The specific process of allocating the sub-block label P according to the CCE label n CCE is: selecting a P from the set {0, 1, 2, 3} in the downlink subframe labeled with the carrier mapping sequence number as " CC " The value is such that N q , p ≤ fO < N q , p + l , assign sub-block numbers where /(" CC £ ) represents a function of the CCE label " CC £ .
当没有引入开销压缩机制、 即 A^ = maX{0, N }时, 有 /("CC£) = "CC£; 当 引入了开销压缩机制时, 对 LTE-A FDD***有 /("CC£) = "CCE When the overhead compression mechanism is not introduced, ie A^ = ma X {0, N }, there is /(" CC£ ) = " CC £ ; when the overhead compression mechanism is introduced, there is /(" for the LTE-A FDD system. CC£ ) = "CCE
~SF ~SF
K 或者 f(nCCE CCE K or f(n CCE CCE
) = mod("CC + mod W + 1, 2) x ACK 对 LTE-A TDD***有 ) = mod(" CC + mod W + 1, 2) x ACK for LTE-A TDD systems
N. N.
CCE 或者 CCE CCE or CCE
f(nCCE ) f(jiCCE ) = mod("CC£ + mod(N^c m K + 1, 2) x ACK Nq Ac m K) , 其中 f(n CCE ) f(ji CCE ) = mod(" CC£ + mod(N^ c m K + 1, 2) x ACK N q Ac m K ) , where
K N K N
步骤 203 , 按照先递增上述序号再递增上述子块标号的顺序来为至少一 个 DL CC分配上行 ACK信道。 Step 203: Assign an uplink ACK channel to the at least one DL CC according to the sequence of incrementing the sequence number and then incrementing the sub-block number.
对于 4)个 DL CC中的成对 DL CC , 为维持对 LTE UE的后向兼容性, 重 用 LTE***的上行 ACK信道分配机制, 在此不再详述。 下面讨论的是为不 成对 DL CC分配上行 ACK信道的过程。 For the paired DL CCs in 4) DL CCs, the uplink ACK channel allocation mechanism of the LTE system is reused in order to maintain backward compatibility with the LTE UE, and will not be described in detail herein. Discussed below is the process of allocating an uplink ACK channel for an unpaired DL CC.
对 LTE-A TDD*** ,在上述序号由载波映射序号 和子帧映射序号 w组 成时, 上述按照先递增上述序号再递增上述子块标号的顺序来为至少一个
DL CC分配上行 ACK信道具体为: 按照先递增载波映射序号 ^、再递增子帧 映射序号 w、最后递增子块标号 P的顺序来为至少一个 DL CC分配上行 ACK 信道; 或者按照先递增子帧映射序号^、 再递增载波映射序号 最后递增 子块标号 P的顺序来为至少一个 DL CC分配上行 ACK信道。 In the LTE-A TDD system, when the sequence number is composed of a carrier mapping sequence number and a subframe mapping sequence number w, the foregoing step of incrementing the sequence number by incrementing the sequence number is at least one The DL CC allocates an uplink ACK channel, which is specifically: assigning an uplink ACK channel to at least one DL CC according to an order of increasing the carrier mapping sequence number, re-incrementing the subframe mapping sequence number w, and finally incrementing the sub-block number P; The mapping sequence number ^, the re-incrementing carrier mapping sequence number, and the order of the last sub-block number P are finally incremented to allocate an uplink ACK channel for at least one DL CC.
在分配了载波映射序号 的 DL CC中,对于与下行关联子帧集索引的第 m个元素 ^对应的下行子帧中标号为 nCCE的 CCE,按照先递增载波映射序号 q、 再递增子帧映射序号 w、 最后递增子块标号 p的顺序, 分配上行 ACK信 道的具体过程如下: In the DL CC to which the carrier mapping sequence number is assigned, for the CCE labeled n CCE in the downlink subframe corresponding to the mth element ^ of the downlink associated subframe set index, the carrier mapping sequence number q is incremented, and the subframe is incremented. The sequence of mapping the sequence number w and finally incrementing the sub-block label p, the specific process of allocating the uplink ACK channel is as follows:
设分配的上行 ACK信道标号为 UCCH , 将步骤 202分配的子块标号 P值代 入Let the assigned uplink ACK channel label be UCCH , and substitute the sub-block label P value assigned in step 202.
-l -l
∑ N. p + gl (i, p)) +∑g2 (I, p) + f(nCCE ) - Nq,p + N CCH,unpair 中计算得到分配的上行 ACK信道标号,其中 Μ,·表示分配了载波映射序号 的 不成对 DL CC的下行关联子帧集索引给出的关联下行子帧数目 , ∑ N. p + gl (i, p)) + ∑g 2 (I, p) + f(n CCE ) - N q , p + N CCH , the unpaired calculated uplink ACK channel label, where Μ, · indicating the number of associated downlink subframes given by the downlink associated subframe set index of the unpaired DL CC to which the carrier mapping sequence number is assigned,
A¾CCff fl,表示根据至少一个不成对 DL CC CCE标号映射的上行 ACK信道 在所有 PUCCH格式 1/la/lb信道中的起始偏置。 的下行关联子帧集索引中具有相同的关联下行子帧数目 M , 此时 gi ( P) = m x (N! +1 - Ν ρ ) , g2 ( , p) = N! +1 - Ν ρ。 在分配了载波映射序号 的 DL CC中,对于与下行关联子帧集索引的第 m个元素 ^对应的下行子帧中标号为 nCCE的 CCE,按照先递增子帧映射序号 m、 再递增载波映射序号 ^、 最后递增子块标号 P的顺序, 分配上行 ACK信 道的具体过程如下:
设分配的上行 ACK信道标号为 UCCH , 将步骤 202分配的子块标号 Ρ值代 入A3⁄4 CCff fl , indicating the initial offset of the uplink ACK channel mapped according to at least one unpaired DL CC CCE label in all PUCCH format 1/la/lb channels. The downlink associated subframe set index has the same number of associated downlink subframes M, where gi ( P ) = mx (N ! +1 - Ν ρ ) , g 2 ( , p) = N ! +1 - Ν ρ . In the DL CC to which the carrier mapping sequence number is assigned, for the CCE labeled n CCE in the downlink subframe corresponding to the mth element ^ of the downlink associated subframe set index, the sequence number is incremented according to the first incrementing subframe, and the carrier is incremented. The mapping sequence number ^, the order of the last incrementing sub-block label P, the specific process of allocating the uplink ACK channel is as follows: Let the assigned uplink ACK channel label be UCCH , and substitute the sub-block label value assigned in step 202.
-l -l -l -l
n CCH = ∑ ,. x N,p +∑Mt x (N,p+1 - N,p ) + m x (Λ^+1 - Nq + f(nCCE ) - + N UCCH,U 中计算得到分配的上行 ACK信道标号,其中 Μ,·表示分配了载波映射序号 的 DL CC的下行关联子帧集索引给出的关联下行子帧数目, A¾cai fl,>表示根 据至少一个不成对 DL CC CCE标号映射的上行 ACK信道在所有 PUCCH格 式 1/la/lb信道中的起始偏置。 n CCH = ∑ ,. x N, p +∑M t x (N, p+1 - N, p ) + mx (Λ^ +1 - N q + f(n CCE ) - + N UCCH , calculated in U Obtaining an allocated uplink ACK channel label, where Μ,· indicates the number of associated downlink subframes given by the downlink associated subframe set index of the DL CC to which the carrier mapping sequence number is assigned, A3⁄4 cai fl ,> indicates according to at least one unpaired DL CC The initial offset of the CCE label mapped uplink ACK channel in all PUCCH format 1/la/lb channels.
对 LTE-A FDD***,上述序号由载波映射序号 组成,上述按照先递增 上述序号再递增上述子块标号的顺序来为至少一个 DL CC分配上行 ACK信 道具体为: 按照先递增载波映射序号 、 再递增子块标号 P的顺序来为至少 一个 DL CC分配上行 ACK信道。 上述与每个 DL CC关联的实际子帧数目是 1„ For the LTE-A FDD system, the sequence number is composed of a carrier mapping sequence number, and the uplink ACK channel is allocated to at least one DL CC according to the sequence of incrementing the sequence number and then incrementing the sub-block number, which is specifically: The order of the sub-block labels P is incremented to allocate an uplink ACK channel for at least one DL CC. The actual number of subframes associated with each DL CC described above is 1 „
在分配了载波映射序号 的 DL CC中, 对于对应的下行子帧中标号为 nCCE ^C E, 按照先递增载波映射序号 ^、 再递增子块标号 P的顺序, 分配 上行 ACK信道的具体过程如下: In the DL CC to which the carrier mapping sequence number is assigned, for the corresponding downlink subframe, the label is n CCE ^CE, and the specific process of allocating the uplink ACK channel according to the order of increasing the carrier mapping sequence ^ and incrementing the sub-block label P is as follows: :
设分配的上行 ACK信道标号为 CCH , 将步骤 202分配的子块标号 直 代入 npucc =
中计算得到分配的上行 ACK信道标号, 其中,
表示根据至少 一个不成对 DL CC CCE标号映射的上行 ACK信道在所有 PUCCH格式 1/la/lb信道中的起始偏置。 Let the assigned uplink ACK channel label be CCH , and substitute the sub-block label assigned in step 202 into npucc = Calculating the assigned uplink ACK channel label, where Indicates the starting offset of the uplink ACK channel mapped according to at least one unpaired DL CC CCE label in all PUCCH format 1/la/lb channels.
在 LTE-A TDD***中, 当为在相同上行成员载波映射上行 ACK信道的 至少一个 DL CC分配上行 ACK信道时, 要根据与每个 DL CC对应的下行关 联子帧集索引 中的最大元素数目来设置。 本发明实施例提出根据与每个 DL CC关联的实际子帧数目, 为在相同上行成员载波映射上行 ACK信道的
至少一个 DL CC的每个下行关联子帧分配序号, 子帧内分配的上行 ACK信 道划分子块并分配子块标号, 按照先递增上述序号再递增上述子块标号的 顺序来为至少一个 DL CC分配上行 ACK信道。 继续图 1的例子, H殳 DL CC 3是成对 DL CC, 为不成对 DL CC 1和 DL CC 2分别分配载波映射序号 0和 1 时, 为成对和不成对 DL CC的上行 ACK信道分配分别通知映射起始偏置 UCCH,x CH,u,ir , 按照先递增载波映射序号、 再递增子帧映射序号、 最后递增子块标号的顺序, 为各 DL CC分配的上行 ACK信道如图 5所示。 从 图 4可以看到, 本发明实施例能够将与不成对 DL CC对应的由较少实际关联 子帧数和较小 值所造成的空闲上行 ACK信道块组织成连续分布的, 因而 能够更好地支持在与这些空闲上行 ACK信道块对应的资源块上动态调度物 理层上行共享信道。 In the LTE-A TDD system, when an uplink ACK channel is allocated for at least one DL CC that maps an uplink ACK channel on the same uplink component carrier, the maximum number of elements in the downlink associated subframe set index corresponding to each DL CC is to be used. To set it up. The embodiment of the present invention proposes to map an uplink ACK channel on the same uplink component carrier according to the actual number of subframes associated with each DL CC. Each downlink associated subframe of the at least one DL CC is allocated a sequence number, and the uplink ACK channel allocated in the subframe divides the sub-block and allocates the sub-block label, and the order of the sub-block label is incremented by increasing the sequence number to be at least one DL CC. The uplink ACK channel is allocated. Continuing with the example of FIG. 1, H殳DL CC 3 is a pair of DL CCs, and when the carrier mapping numbers 0 and 1 are respectively assigned to the unpaired DL CC 1 and DL CC 2, the uplink ACK channels are allocated for the paired and unpaired DL CCs. Notifying the mapping start offset U CCH , x CH , u , ir respectively , according to the order of increasing the carrier mapping sequence number, the incrementing subframe mapping sequence number, and the last increasing sub-block number, the uplink ACK channel allocated for each DL CC is as shown in the figure. 5 is shown. As can be seen from FIG. 4, the embodiment of the present invention can organize idle uplink ACK channel blocks caused by fewer actual associated subframes and smaller values corresponding to unpaired DL CCs into a continuous distribution, and thus can be better. The physical layer uplink shared channel is dynamically scheduled on the resource blocks corresponding to the idle uplink ACK channel blocks.
同时, 本发明实施例避免基站针对每个 DL CC通知一个上行 ACK信道 映射起始偏置, 为不成对 DL CC通知共同的一个上行 ACK信道映射起始偏 置即可, 可以有效减少基站下发的信令。 同时, 该方法也可以用于 FDD系 统, 以保持 LTE-A TDD和 FDD***的相同设计。 在 LTE-A FDD***中, 能 够将不成对 DL CC由于较小" OT值所造成的空闲上行 ACK信道块组织成连 续分布的, 能够更好地支持在与这些空闲上行 ACK信道块对应的资源块上 动态调度物理层上行共享信道。 图 6为本发明为至少一个 DL CC预留上行 ACK信道的实施例示意图 步骤 601 , 根据与 DL CC关联的最大子帧数目来为至少一个 DL CC预留 上行 ACK信道; In the meantime, the embodiment of the present invention can prevent the base station from notifying an uplink ACK channel mapping start offset for each DL CC, and notifying the common uplink ACK channel mapping start offset for the unpaired DL CC, which can effectively reduce the base station sending Signaling. At the same time, the method can also be used in FDD systems to maintain the same design of LTE-A TDD and FDD systems. In the LTE-A FDD system, the idle uplink ACK channel blocks of the unpaired DL CC due to the smaller " OT value" can be organized into a continuous distribution, and the resources corresponding to the idle uplink ACK channel blocks can be better supported. The physical layer uplink shared channel is dynamically scheduled on the block. Figure 6 is a schematic diagram 601 of an embodiment of the present invention for reserving an uplink ACK channel for at least one DL CC, which is reserved for at least one DL CC according to the maximum number of subframes associated with the DL CC. Uplink ACK channel;
步骤 602, 为至少一个 DL CC和 /或下行子帧分配序号; Step 602: Assign a sequence number to at least one DL CC and/or a downlink subframe.
步骤 603 , 为 DL CC的下行子帧对应的上行 ACK信道划分子块, 并分配 子块标号;
步骤 604, 按照先递增上述序号, 再递增上述子块标号的顺序来为至少 一个 DL CC分配上行 ACK信道。 Step 603: Divide a sub-block for an uplink ACK channel corresponding to a downlink subframe of the DL CC, and allocate a sub-block label; Step 604: Allocate an uplink ACK channel for at least one DL CC according to the order of increasing the foregoing sequence number and then incrementing the foregoing sub-block number.
本实施例适用于 LTE-A TDD和 LTE-A FDD***中, 基站为 DL CC分 配上行 ACK信道的过程中。基站在分配上行 ACK信道之前, 先为一些 DL CC预留上行 ACK信道, 再将 DL CC分为成对的和不成对的, 再为它们分 配载波映射序号, 对于 TDD***, 在分配载波映射序号之后还需分配子帧 映射序号, 根据上述序号和子块标号, 通过计算公式, 得到要分配的上行 ACK信道的 n CCH。 下面对每个步骤做详细的说明。 This embodiment is applicable to the LTE-A TDD and LTE-A FDD systems, and the base station allocates an uplink ACK channel to the DL CC. Before allocating the uplink ACK channel, the base station reserves an uplink ACK channel for some DL CCs, then divides the DL CC into pairs and unpaired, and then assigns a carrier mapping sequence number to them. For the TDD system, the carrier mapping sequence number is allocated. Then, the subframe mapping sequence number needs to be allocated, and according to the above sequence number and the sub-block label, the n CCH of the uplink ACK channel to be allocated is obtained by calculating a formula. Each step is explained in detail below.
在步骤 601中, 对 LTE-A TDD***, 可以类似 LTE TDD***, 根据成员 载波上下行子帧配比设置和 HARQ定时关系, 在上行成员载波为至少一个 DL CC分别定义下行关联子帧集索引。 当上下行子帧配比设置相同时, 推 荐采用与 LTE TDD***相同的下行关联子帧集索引。 一种简单的资源预留 方式是根据每个 DL CC的下行关联子帧集索引中的最大元素数目、 即与 DL CC关联的最大子帧数目来为至少一个 DL CC预留上行 ACK信道。 对 LTE-A FDD***, 上述与每个 DL CC关联的最大子帧数目是 1。 In step 601, for the LTE-A TDD system, the LTE TDD system may be similar to the LTE TDD system, according to the uplink and downlink subframe ratio setting of the component carrier and the HARQ timing relationship, and the downlink component carrier is defined as the downlink associated subframe set index for the at least one DL CC. . When the uplink and downlink subframe ratio settings are the same, it is recommended to use the same downlink associated subframe set index as the LTE TDD system. A simple resource reservation method is to reserve an uplink ACK channel for at least one DL CC according to the maximum number of elements in the downlink associated subframe set index of each DL CC, that is, the maximum number of subframes associated with the DL CC. For the LTE-A FDD system, the maximum number of subframes associated with each DL CC is 1.
为至少一个 DL CC预留的上行 ACK信道资源通过表示根据至少一个 DL CC CCE标号映射的上行 ACK信道在所有 PUCCH格式 1/la/lb信道中的起始 偏置 A¾C 来通知 UE。 当上述至少一个 DL CC指至少一个不成对 DL CC时, 根据至少一个 DL CC CCE标号映射的上行 ACK信道在所有 PUCCH格式 1/la/lb信道中的起始偏置 A¾COT即是指 Λ¾^,Μ„ραί , 这个参数可以由基站广 播通知 UE。 除此之外, 对于每个成对 DL CC, 基站还要广播通知一个不同 上行 ACK信道映射起始偏置, 并通过通知的上行 ACK信道映射起始偏置来 预留上行 ACK信道资源。 The uplink ACK channel resource reserved for the at least one DL CC informs the UE by indicating a starting offset A3⁄4 C in all PUCCH format 1/la/lb channels of the uplink ACK channel mapped according to the at least one DL CC CCE label. When the at least one DL CC refers to at least one unpaired DL CC, the initial offset A3⁄4 COT of the uplink ACK channel mapped according to the at least one DL CC CCE label in all PUCCH formats 1/la/lb channel means Λ3⁄4^ , Μ ρ ρ , this parameter can be broadcasted by the base station to inform the UE. In addition, for each pair of DL CCs, the base station also broadcasts a different uplink ACK channel mapping start offset and transmits the notified uplink ACK channel. The initial offset is mapped to reserve uplink ACK channel resources.
对一个上行成员载波, 为不成对 DL CC下发的 PDCCH信道分配上行 ACK信道只可能发生于 LTE-A UE, 所以这部分资源分配可以不考虑 LTE UE后向兼容性的问题。为了减少上行 ACK信道的资源开销,为不成对 DL CC
预留的上行 ACK信道资源可以不用像 LTE***那样根据最大 CCE数目来进 行预留, 而是引入一些开销压缩机制。 种开销压缩机制是基站广播通知 为不成对 DL CC预留的上行 ACK信道数目, 例如 或 。 另一种开销 压缩机制是基站广通通知为不成对 DL CC预留上行 ACK信道时所使用的资 源压缩因子,例如 ,其中 是正整数, 对各不成对 DL CC可以相同, 也可以不同。 在通知资源压缩因子时, 为分配了载波映射序号 的不成对 DL CC预留的上行 ACK信道数目根据通知的资源压缩因子来计算, 例如对 max - 4)]/3ό] For an uplink component carrier, the allocation of the uplink ACK channel to the PDCCH channel delivered by the unpaired DL CC may only occur in the LTE-A UE, so this part of the resource allocation may not consider the backward compatibility of the LTE UE. In order to reduce the resource overhead of the uplink ACK channel, it is an unpaired DL CC. The reserved uplink ACK channel resources may not be reserved according to the maximum number of CCEs as in the LTE system, but introduce some overhead compression mechanism. The overhead compression mechanism is the number of uplink ACK channels that the base station broadcasts to notify for unpaired DL CCs, such as or. Another type of overhead compression mechanism is a resource compression factor used by the base station to notify the unpaired DL CC of the uplink ACK channel, for example, where a positive integer is used, which may be the same or different for each unpaired DL CC. When the resource compression factor is notified, the number of uplink ACK channels reserved for the unpaired DL CC to which the carrier mapping sequence number is assigned is calculated according to the notified resource compression factor, for example, for max - 4)] / 3 ό]
LTE-A TDD*** ACK LTE-A TDD system ACK
SF , 其中 ^表示子帧内 PDCCH信 SF , where ^ denotes a PDCCH within a subframe
K 道占用的最大 OFDM符号数目。 在 LTE***中, 根据下行***带宽和是否是 携带 TDD***同步信道的子帧, ^ 的取值可以为 2 3或 4 The maximum number of OFDM symbols occupied by the K channel. In the LTE system, ^ can be 2 3 or 4 depending on the downlink system bandwidth and whether it is a subframe carrying the TDD system synchronization channel.
步骤 602至 604中基站根据上述序号和子块标号为至少一个 DL CC分配 上行 ACK信道是指基站为预留了 ACK信道的 DL CC分别分配上行 ACK信 道, 具体的分配方法与步骤 201至 203相同, 即对预留了 ACK信道的 DL CC 按照步骤 302分配一套 ACK信道。 In the steps 602 to 604, the base station allocates the uplink ACK channel to the at least one DL CC according to the sequence number and the sub-block number. The base station allocates the uplink ACK channel to the DL CC that has reserved the ACK channel, and the specific allocation method is the same as steps 201 to 203. That is, the DL CC with the ACK channel reserved is allocated a set of ACK channels according to step 302.
本发明实施例提出为在相同 UL CC映射上行 ACK信道的至少一个 DL CC分配载波映射序号, 根据与 DL CC关联的最大子帧数目为至少一个 DL CC预留上行 ACK信道, 根据序号和子块标号来为至少一个 DL CC连续分配 上行 ACK信道。 本发明实施例能够将不成对 DL CC对应的空闲上行 ACK信 道块组织成连续分布的, 因而能够更好地支持在与这些空闲上行 ACK信道 块对应的资源块上动态调度 PUSCH传输。 The embodiment of the present invention proposes to allocate a carrier mapping sequence number to at least one DL CC of the same UL CC mapping uplink ACK channel, and reserve an uplink ACK channel for at least one DL CC according to the maximum number of subframes associated with the DL CC, according to the sequence number and the sub-block number. To continuously allocate an uplink ACK channel for at least one DL CC. The embodiments of the present invention can organize idle uplink ACK channel blocks corresponding to unpaired DL CCs into a continuous distribution, thereby better supporting dynamic scheduling of PUSCH transmissions on resource blocks corresponding to the idle uplink ACK channel blocks.
图 7为本发明实施例基站的结构示意图, 本实施例中的基站包括:
第一序号分配模块 701 , 用于为至少一个 DL CC和 /或下行子帧分配序 号; FIG. 7 is a schematic structural diagram of a base station according to an embodiment of the present invention, where the base station in this embodiment includes: a first sequence number allocation module 701, configured to allocate a sequence number for at least one DL CC and/or a downlink subframe;
第一标号分配模块 702, 用于为 DL CC的下行子帧对应的上行 ACK信道 划分子块, 并分配子块标号; a first label allocation module 702, configured to divide a sub-block for an uplink ACK channel corresponding to a downlink subframe of the DL CC, and allocate a sub-block label;
第一信道分配模块 703 , 用于按照先递增上述序号, 再递增上述子块标 号的顺序来为至少一个 DL CC分配上行 ACK信道。 The first channel allocation module 703 is configured to allocate an uplink ACK channel to the at least one DL CC according to the sequence of incrementing the sequence number first and then incrementing the sub-block number.
还可以包括: It can also include:
第一发送模块 704, 用于发送第一序号分配模块分配的载波映射序号或 CC标号; The first sending module 704 is configured to send a carrier mapping sequence number or a CC label allocated by the first sequence number assigning module;
还可以包括: It can also include:
第一预留模块 705 , 用于根据与 DL CC关联的最大子帧数目为至少一个 DL CC预留上行 ACK信道, 并将预留结果发送给第一序号分配模块。 The first reservation module 705 is configured to reserve an uplink ACK channel for the at least one DL CC according to the maximum number of subframes associated with the DL CC, and send the reservation result to the first sequence number allocation module.
本发明实施例用于图 2、 6所示的实施例中, 其特点不再赘述。 图 8为本发明实施例 UE的结构示意图, 本实施例中的 UE包括: 第二信道分配模块 801 , 用于按照先递增序号, 再递增子块标号的顺序 来为至少一个 DL CC分配上行 ACK信道。 The embodiments of the present invention are used in the embodiments shown in FIG. 2 and FIG. 6, and their features are not described again. FIG. 8 is a schematic structural diagram of a UE according to an embodiment of the present invention. The UE in this embodiment includes: a second channel allocation module 801, configured to allocate an uplink ACK to at least one DL CC according to an order of increasing a sequence number and then incrementing a sub-block number. channel.
还可以包括: It can also include:
第一接收模块 802,用于接收载波映射序号或 CC标号并将载波映射序号 发送给第二信道分配模块或将 CC标号发送给第一映射模块; The first receiving module 802 is configured to receive a carrier mapping sequence number or a CC label, and send the carrier mapping sequence number to the second channel allocation module or send the CC label to the first mapping module.
如果第一接收模块接收的是 CC标号, 还包括: If the first receiving module receives the CC label, it also includes:
第一映射模块 803 ,用于根据预设规则按照接收的 CC标号来映射分配的 载波映射序号。 The first mapping module 803 is configured to map the allocated carrier mapping sequence number according to the received CC label according to a preset rule.
本发明实施例用于图 2、 6所示的实施例中, 其特点不再赘述。 通过以上的实施方式的描述, 本领域的技术人员可以清楚地了解到本
发明可以通过硬件实现, 也可以借助软件加必要的通用硬件平台的方式来 实现。 基于这样的理解, 本发明的技术方案可以以软件产品的形式体现出 来, 该软件产品可以存储在一个非易失性存储介质 (可以是 CD-ROM, U 盘, 移动硬盘等) 中, 包括若干指令用以使得一台计算机设备(可以是个 人计算机, 服务器, 或者网络设备等)执行本发明各个实施例上述的方法。 The embodiments of the present invention are used in the embodiments shown in FIG. 2 and FIG. 6, and their features are not described again. Through the description of the above embodiments, those skilled in the art can clearly understand this The invention can be implemented in hardware or by means of software plus the necessary general hardware platform. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a USB flash drive, a mobile hard disk, etc.), including several The instructions are for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform the methods described above in accordance with various embodiments of the present invention.
本领域技术人员可以理解附图只是一个优选实施例的示意图, 附图中 的模块或流程并不一定是实施本发明所必须的。 A person skilled in the art can understand that the drawings are only a schematic diagram of a preferred embodiment, and the modules or processes in the drawings are not necessarily required to implement the invention.
本领域技术人员可以理解实施例中的装置中的模块可以按照实施例描 述进行分布于实施例的装置中, 也可以进行相应变化位于不同于本实施例 的一个或至少一个装置中。 上述实施例的模块可以合并为一个模块, 也可 以进一步拆分成至少一个子模块。 It will be understood by those skilled in the art that the modules in the apparatus in the embodiments may be distributed in the apparatus of the embodiment as described in the embodiment, or may be correspondingly changed in one or at least one apparatus different from the embodiment. The modules of the above embodiments may be combined into one module, or may be further split into at least one sub-module.
上述本发明实施例序号仅仅为了描述, 不代表实施例的优劣。 The serial numbers of the embodiments of the present invention are merely for the description, and do not represent the advantages and disadvantages of the embodiments.
以上公开的仅为本发明的几个具体实施例, 但是, 本发明并非局限于 此, 任何本领域的技术人员能思之的变化都应落入本发明的保护范围。
The above disclosure is only a few specific embodiments of the present invention, but the present invention is not limited thereto, and any changes that can be made by those skilled in the art should fall within the protection scope of the present invention.
Claims
1.一种多载波 ACK信道分配的方法, 其特征在于, 包括: 为至少一个 DL CC和 /或下行子帧分配序号; A method for allocating a multi-carrier ACK channel, comprising: assigning a sequence number to at least one DL CC and/or a downlink subframe;
为 DL CC的下行子帧对应的上行 ACK信道划分子块, 并分配子块标号; 按照先递增所述序号, 再递增所述子块标号的顺序来为至少一个 DL CC分配上行 ACK信道。 And dividing a sub-block for the uplink ACK channel corresponding to the downlink subframe of the DL CC, and allocating the sub-block label; and allocating the uplink ACK channel to the at least one DL CC according to the sequence of incrementing the sequence number and then incrementing the sub-block label.
2.如权利要求 1所述的一种多载波 ACK信道分配的方法, 其特征在 于, 所述为至少一个 DL CC和 /或下行子帧分配序号包括: The method for allocating a multi-carrier ACK channel according to claim 1, wherein the assigning a sequence number to the at least one DL CC and/or the downlink subframe comprises:
对于 TDD***: For the TDD system:
为至少一个 DL CC分配载波映射序号; Allocating a carrier mapping sequence number to at least one DL CC;
根据与每个 DL CC关联的实际子帧数目, 为在相同 UL CC映射上行 对于 FDD***: According to the actual number of subframes associated with each DL CC, for the uplink mapping on the same UL CC for the FDD system:
为至少一个 DL CC分配载波映射序号。 A carrier mapping sequence number is assigned to at least one DL CC.
3.如权利要求 2所述的一种多载波 ACK信道分配的方法, 其特征在 于, 所述实际子帧数目包括根据成员载波上下行子帧配比设置和 HARQ 定时关系预先确定。 The method for allocating a multi-carrier ACK channel according to claim 2, wherein the actual number of subframes is determined according to a downlink subframe ratio setting and a HARQ timing relationship of the component carrier.
4.如权利要求 2所述的一种多载波 ACK信道分配的方法, 其特征在 于, 所述至少一个 DL CC包括至少一个与映射上行 ACK信道的 UL CC不 成对的 DL CC。 The method of multi-carrier ACK channel allocation according to claim 2, wherein the at least one DL CC comprises at least one DL CC that is not paired with a UL CC that maps an uplink ACK channel.
5.如权利要求 2所述的一种多载波 ACK信道分配的方法, 其特征在 于, 所述分配子帧映射序号具体包括按照下行关联子帧集索引的元素顺 序分配子帧映射序号。 The method for allocating a multi-carrier ACK channel according to claim 2, wherein the allocating the subframe mapping sequence number comprises: assigning a subframe mapping sequence number according to an element sequence of the downlink associated subframe set index.
6.如权利要求 2或 5所述的一种多载波 ACK信道分配的方法,其特征 在于, 分配所述载波映射序号和分配所述子帧映射序号, 具体包括: 为不同 DL CC分配不同的载波映射序号;
为不同的子帧分配不同的子帧映射序号。 The method for allocating the multi-carrier ACK channel according to claim 2 or 5, wherein assigning the carrier mapping sequence number and allocating the subframe mapping sequence number comprises: assigning different DL CCs to different DL CCs Carrier mapping sequence number; Different subframe mapping sequence numbers are assigned to different subframes.
7.如权利要求 1所述的一种多载波 ACK信道分配的方法, 其特征在 于, 所述为 DL CC的下行子帧对应的上行 ACK信道划分子块包括, 根据 行子帧对应的上行 ACK信道划分子块; 所述分配子块标号包括根据 CCE 标号来分配子块标号。 The method for allocating a multi-carrier ACK channel according to claim 1, wherein the sub-block of the uplink ACK channel corresponding to the downlink subframe of the DL CC includes: an uplink ACK corresponding to the row subframe Channel partitioning sub-blocks; the assigning sub-block labels includes allocating sub-block labels according to CCE labels.
8.如权利要求 7所述的一种多载波 ACK信道分配的方法, 其特征在 于, 所述 CCE标号是 UE PDCCH信道所占用的 CCE的标号, 当 PDCCH信 道占用至少两个 CCE时是 PDCCH信道占用的起始 CCE的标号。 The method for allocating multi-carrier ACK channel according to claim 7, wherein the CCE label is a label of a CCE occupied by a UE PDCCH channel, and is a PDCCH channel when the PDCCH channel occupies at least two CCEs. The label of the starting CCE occupied.
9.如权利要求 7所述的一种多载波 ACK信道分配的方法, 其特征在 于, 所述根据 CCE标号来分配子块标号包括: The method for allocating a multi-carrier ACK channel according to claim 7, wherein the assigning the sub-block number according to the CCE label comprises:
从集合 P e {0, i, 2, 3}中选择一个 P值使得 Nq'p≤ /("c < , 其中 CCE为 分配了载波映射序号 ^的下行子帧内标号为 nccE的 CCE, 分配子块标号 P, 其中 " )表示 CCE标号 nccE的函数, 表示分配了载波映射序号 的 DL CC一个下行子帧的前 P个子块所包含的上行 ACK信道数目。 Select a P value from the set P e {0, i, 2 , 3} such that N q 'p ≤ /( "c < , where CCE is the number of n cc E in the downlink subframe to which the carrier mapping number ^ is assigned. CCE, the allocation sub-block number P, where ") represents a function of the CCE label n cc E , and represents the number of uplink ACK channels included in the first P sub-blocks of one downlink subframe of the DL CC to which the carrier mapping sequence number is assigned.
10. 如权利要求 2所述的一种多载波 ACK信道分配的方法,其特征 在于, 所述按照先递增所述序号, 再递增所述子块标号的顺序来为至少 一个 DL CC分配上行 ACK信道, 包括: The method for allocating multi-carrier ACK channel according to claim 2, wherein the uplink ACK is allocated to at least one DL CC according to the sequence of incrementing the sequence number and incrementing the sub-block number. Channel, including:
对于 TDD***: For the TDD system:
按照先递增载波映射序号、 再递增子帧映射序号、 最后递增子块标号 的顺序来为至少一个 DL CC分配上行 ACK信道; 或 Allocating an uplink ACK channel to at least one DL CC according to an order of incrementing the carrier mapping sequence number, incrementing the subframe mapping sequence number, and finally incrementing the sub-block label; or
按照先递增子帧映射序号、 再递增载波映射序号、 最后递增子块标号 的顺序来为至少一个 DL CC分配上行 ACK信道; Allocating an uplink ACK channel to at least one DL CC according to an order of increasing the subframe number, increasing the carrier mapping sequence number, and finally incrementing the sub-block label;
对于 FDD***:
按照先递增载波映射序号、 再递增子块标号的顺序来为至少一个 DL CC分配上行 ACK信道。 For the FDD system: The uplink ACK channel is allocated to at least one DL CC according to the order of incrementing the carrier mapping sequence number and incrementing the sub-block label.
11. 如权利要求 10所述的一种多载波 ACK信道分配的方法, 其特 征在于, 对于 TDD***, 所述按照先递增载波映射序号、 再递增子帧映 射序号、 最后递增子块标号的顺序来为至少一个 DL CC分配上行 ACK信 道包括: The method for allocating multi-carrier ACK channel according to claim 10, wherein, for the TDD system, the sequence of the first incremental carrier mapping sequence number, the re-incrementing subframe mapping sequence number, and the last incremental sub-block number Allocating an uplink ACK channel for at least one DL CC includes:
将分配的子块标号 P值代入 Substituting the assigned sub-block label P value
∑ (M{ N. p + gl ( , p)) +∑g2 (i, p) + f(nCCE、- Nq,p + N UCCH,unpair 中计算得到分配的上行 ACK信道标号 4 ∑(M { N. p + gl ( , p)) +∑g 2 (i, p) + f(n CCE , - N q , p + N UCCH , the assigned uplink ACK channel number 4 is calculated in unpair
其巾: Its towel:
M,表示分配了载波映射序号 的不成对 DL CC的下行关联子帧集索引 给出的关联下行子帧数目, M, indicating the number of associated downlink subframes given by the downlink associated subframe set index of the unpaired DL CC to which the carrier mapping sequence number is assigned,
A¾CQ/ a,表示根据至少一个不成对 DL CC CCE标号映射的上行 ACK 信道在所有 PUCCH格式 1/la/lb信道中的起始偏置, A3⁄4 CQ/ a , indicating the initial offset of the uplink ACK channel mapped according to at least one unpaired DL CC CCE label in all PUCCH format 1/la/lb channels,
12. 如权利要求 11所述的一种多载波 ACK信道分配的方法, 其特 征在于, 当所述不成对 DL CC具有相同的上下行子帧配比时, gi ('', P) = m x (N! +1 - Ν ρ ) , g2 ( , ρ) = - Ν ρ。 12. A method for multi-carrier ACK channel allocation according to claim 11, wherein gi ('', P) = mx when the unpaired DL CCs have the same uplink-downlink subframe ratio. (N ! +1 - Ν ρ ) , g 2 ( , ρ) = - Ν ρ .
13. 如权利要求 10所述的一种多载波 ACK信道分配的方法, 其特 征在于, 对于 TDD***, 所述按照先递增子帧映射序号、 再递增载波映 射序号、 最后递增子块标号的顺序来为至少一个 DL CC分配上行 ACK信 道包括:
将分配的子块标号 P值代入 CCH = ∑^ Χ N,p +∑ ,. x (N,p+1 - N,p ) + m x (Λ^+1 - NQ + f(nCCE ) - + CCH,un 中计算得到分配的上行 ACK信道标号 "^c^; The method for allocating multi-carrier ACK channel according to claim 10, wherein, for the TDD system, the sequence of the first-incremented subframe mapping sequence number, the re-incrementing carrier mapping sequence number, and the last incremental sub-block number Allocating an uplink ACK channel for at least one DL CC includes: Substituting the assigned sub-block label P value into CCH = ∑^ Χ N, p + ∑ , . x (N, p+1 - N, p ) + mx (Λ^ +1 - N Q + f(n CCE ) - + CCH , un calculated to get the assigned uplink ACK channel label "^c^;
其巾: Its towel:
M '表示分配了载波映射序号''的 DL CC的下行关联子帧集索引给出的 关联下行子帧数目, Η 表示根据至少一个不成对 DL CC CCE标号映 射的上行 ACK信道在所有 PUCCH格式 1/la/lb信道中的起始偏置。 M ' denotes the number of associated downlink subframes given by the downlink associated subframe set index of the DL CC to which the carrier mapping sequence number '' is allocated, and Η denotes the uplink ACK channel mapped according to at least one unpaired DL CC CCE label in all PUCCH formats 1 The starting offset in the /la/lb channel.
14. 如权利要求 10所述的一种多载波 ACK信道分配的方法, 其特 征在于, 对于 FDD***, 所述按照先递增载波映射序号、 再递增子块标 号的顺序来为至少一个 DL CC分配上行 ACK信道包括: The method for allocating a multi-carrier ACK channel according to claim 10, wherein, for the FDD system, the at least one DL CC is allocated according to an order of increasing the carrier mapping sequence number and incrementing the sub-block number. The uplink ACK channel includes:
将分配的子块标号 P值代入 Substituting the assigned sub-block label P value
= ΥΝ + Σ Ν Ρ + fincCE ) + = ΥΝ + Σ Ν Ρ + fi n cCE ) +
其巾: Its towel:
A¾Co ai表示根据至少一个不成对 DL CC CCE标号映射的上行 ACK 信道在所有 PUCCH格式 1/la/lb信道中的起始偏置。 A3⁄4 C o ai denotes the initial offset of the uplink ACK channel mapped according to at least one unpaired DL CC CCE label in all PUCCH format 1/la/lb channels.
15. 如权利要求 1所述的一种多载波 ACK信道分配的方法,其特征 在于, 在所述为至少一个 DL CC和 /或下行子帧分配序号之前还包括: 根据与 DL CC关联的最大子帧数目来为至少一个 DL CC预留上行 ACK 信道。 The method for allocating a multi-carrier ACK channel according to claim 1, further comprising: before the assigning a sequence number to the at least one DL CC and/or the downlink subframe, further comprising: according to a maximum associated with the DL CC The number of subframes is reserved for the uplink ACK channel for at least one DL CC.
16. 如权利要求 1所述的一种多载波 ACK信道分配的方法,所述分 配上行 ACK信道之前还包括: The method for allocating a multi-carrier ACK channel according to claim 1, wherein before the allocating the uplink ACK channel, the method further comprises:
为成对和不成对 DL CC分别通知一个上行 ACK信道映射起始偏置。 The uplink ACK channel mapping start offset is separately notified for the paired and unpaired DL CCs.
17. 一种基站, 其特征在于, 包括:
第一序号分配模块, 用于为至少一个 DL CC和 /或下行子帧分配序号; 第一标号分配模块, 用于为 DL CC的下行子帧对应的上行 ACK信道划 分子块, 并分配子块标号; 17. A base station, comprising: a first sequence number allocation module, configured to allocate a sequence number to the at least one DL CC and/or the downlink subframe; the first label allocation module, configured to divide the sub-block for the uplink ACK channel corresponding to the downlink subframe of the DL CC, and allocate the sub-block Label
第一信道分配模块, 用于按照先递增所述序号, 再递增所述标号的顺 序来为至少一个 DL CC分配上行 ACK信道。 And a first channel allocation module, configured to allocate an uplink ACK channel to the at least one DL CC according to the sequence of incrementing the sequence number and then incrementing the label.
18. 如权利要求 17所述的一种基站, 其特征在于, 包括: 第一发送模块, 用于发送载波映射序号或 CC标号。 The base station according to claim 17, comprising: a first sending module, configured to send a carrier mapping sequence number or a CC number.
19. 如权利要求 17所述的一种基站, 其特征在于, 包括: 第一预留模块, 用于根据与 DL CC关联的最大子帧数目为至少一个 DL CC预留上行 ACK信道。 The base station according to claim 17, further comprising: a first reservation module, configured to reserve an uplink ACK channel for the at least one DL CC according to a maximum number of subframes associated with the DL CC.
20. 一种 UE, 其特征在于, 包括: 20. A UE, comprising:
第二信道分配模块, 用于按照先递增序号, 再递增标号的顺序来为至 少一个 DL CC分配上行 ACK信道。 And a second channel allocation module, configured to allocate an uplink ACK channel for at least one DL CC in an order of increasing the sequence number and then incrementing the label.
21. 如权利要求 20所述一种 UE, 其特征在于, 还包括: 第一接收模块, 用于接收载波映射序号或 CC标号。 The UE according to claim 20, further comprising: a first receiving module, configured to receive a carrier mapping sequence number or a CC label.
22. 如权利要求 20所述一种 UE, 其特征在于, 如果接收的是 CC 标号, 还包括: 22. A UE according to claim 20, wherein if the CC number is received, the method further includes:
第一映射模块, 用于根据预设规则按照接收的 CC标号来映射分配的载 波映射序号。 The first mapping module is configured to map the assigned carrier mapping sequence number according to the received CC label according to a preset rule.
23. 一种多载波 ACK信道分配的***, 其特征在于, 包括基站: 所述基站用于为至少一个 DL CC和 /或下行子帧分配序号; 为 DL CC的 下行子帧对应的上行 ACK信道划分子块, 并分配子块标号; 用于按照先递 增上述序号, 再递增上述子块标号的顺序来为至少一个 DL CC分配上行 ACK信道; 用于按照先递增所述序号, 再递增所述标号的顺序来为至少一 个 DL CC分配上行 ACK信道。
A system for multi-carrier ACK channel allocation, comprising: a base station: the base station is configured to allocate a sequence number for at least one DL CC and/or a downlink subframe; and is an uplink ACK channel corresponding to a downlink subframe of the DL CC Dividing a sub-block, and allocating a sub-block label; for assigning an uplink ACK channel to at least one DL CC according to an order of increasing the foregoing sequence number and then incrementing the sub-block number; The order of the labels is to allocate an uplink ACK channel for at least one DL CC.
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CN110049564A (en) * | 2014-10-23 | 2019-07-23 | 上海朗帛通信技术有限公司 | LAA transmission method and device in a kind of Cellular Networks |
CN113115593A (en) * | 2018-11-12 | 2021-07-13 | Oppo广东移动通信有限公司 | Apparatus and method for discontinuous reception of apparatus |
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CN103906251A (en) * | 2012-12-27 | 2014-07-02 | 普天信息技术研究院有限公司 | HARQ-ACK feedback method in D2D mode in LTE network |
CN110049564A (en) * | 2014-10-23 | 2019-07-23 | 上海朗帛通信技术有限公司 | LAA transmission method and device in a kind of Cellular Networks |
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CN113115593A (en) * | 2018-11-12 | 2021-07-13 | Oppo广东移动通信有限公司 | Apparatus and method for discontinuous reception of apparatus |
CN113115593B (en) * | 2018-11-12 | 2023-05-09 | Oppo广东移动通信有限公司 | Apparatus and method for discontinuous reception of apparatus |
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CN102077669B (en) | 2013-10-09 |
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