WO2013029419A1 - 一种配置分片载波后rbg大小和编号的确定方法和装置 - Google Patents

一种配置分片载波后rbg大小和编号的确定方法和装置 Download PDF

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Publication number
WO2013029419A1
WO2013029419A1 PCT/CN2012/077919 CN2012077919W WO2013029419A1 WO 2013029419 A1 WO2013029419 A1 WO 2013029419A1 CN 2012077919 W CN2012077919 W CN 2012077919W WO 2013029419 A1 WO2013029419 A1 WO 2013029419A1
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Prior art keywords
rbg
carrier
fragment
backward compatible
size
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PCT/CN2012/077919
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English (en)
French (fr)
Inventor
苟伟
戴博
夏树强
左志松
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中兴通讯股份有限公司
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Publication of WO2013029419A1 publication Critical patent/WO2013029419A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present invention relates to the field of mobile wireless communications, and more particularly to a method and apparatus for determining the size and number of resource block groups (RBGs) after a slice carrier is configured.
  • Background technique
  • LTE Long Term Evolution
  • 3GPP 3rd Generation Partnership Project
  • LTE-A evolved LTE
  • LTE-A can provide carrier bandwidth of up to 100MHz, support more flexible and higher quality communication, and LTE system has good backward compatibility.
  • CCs component carriers
  • Component Carriers one LTE terminal can only work on one backward compatible CC, and the more powerful LTE-A terminal can simultaneously on multiple CCs. Transfer.
  • uplink carrier spacing is 15kHz
  • the sub-frame 12 a continuous or discontinuous subcarriers in the frequency domain time domain as a resource block (RB, Resource Block) 0 RB
  • RB resource block
  • PRB physical resource block
  • VRB virtual resource block
  • the resource scheduling information is transmitted to the user equipment (UE, User Equipment) through downlink control information (DCI, Downlink Control Information).
  • DCI Downlink Control Information
  • the physical downlink channel for transmitting DCI is called the physical downlink control channel.
  • PDCCH Physical Downlink Control CHannel
  • the UE interprets the content of the resource allocation field by the DCI type of the PDCCH.
  • the indication of resources varies according to the type of DCI.
  • the resource allocation field is composed of two parts: a resource allocation header and resource block allocation information. There are three types of resource allocation: Type 0, Type 1 and Type 2. Type 0 and Type 1 use the same number of bits.
  • DCI Types 1, 2, 2A, 2B, 2C both have the exact same format.
  • the first bit is allocated by the resource allocation, 0 means Type 0, 1 means type 1.
  • the DCI formats 1A, IB, 1C, 1D are used for Type 2 transmission.
  • the lean source allocation type 0, 1 uses the PRB to indicate the resource, and the resource allocation type 2 uses the VRB to indicate the allocated resource.
  • the resource block allocation information includes a resource group allocation bitmap, and the bitmap indicates The RBG (Resource Block Group) information allocated by the eNB to a specific UE.
  • the size of the RBG depends on the carrier bandwidth. The corresponding relationship is shown in Table 1:
  • the number of RBGs is determined by the carrier bandwidth and the RBG size: N R L /p , which contains " / RBG of size P, and an RBG of size N ⁇ - P l R 1 1 .
  • RBGs are numbered starting from the low frequency.
  • the RBG numbers are mapped from 0 to N RBG - 1 to the most significant bit to the least significant bit, respectively.
  • the DCI is transmitted by type 1, 2, 2A, 2B, 2C, and the resource allocation header bit value is 1.
  • a scheduled UE indicates the assigned RB.
  • the scheme groups PRBs according to Table 1, each pB contains p PRBs, and these PRBs are numbered from 0 to P-1.
  • a PRB numbered p ( 0 ⁇ ⁇ ⁇ ⁇ - 1 ) in a continuous RBG is selected to form an RBG subset.
  • the eNB allocates resources to the UE within the subset.
  • Type 1 the resource block allocation information is divided into three fields:
  • the first field uses "log 2 (P)] bits to mark the position of the selected RB in the RBG; the second field uses a 1-bit flag to indicate whether the offset is used;
  • the third field contains a bitmap with each bit of the bitmap used to represent one PRB in the selected RBG subset.
  • the RB is mapped onto the bitmap from the most significant bit as the frequency increases.
  • the size of the bitmap is defined as: ⁇ ⁇ - "log 2 (P)] - 1. Since the size of the bitmap in this method is smaller than "log 2 (P)], the bitmap cannot cover all
  • RBG when RBG is numbered, an offset is required.
  • the second field tag uses the offset.
  • a shift (/?) 0 does not use the offset.
  • the number of the RB starts from the lowest frequency and increases from zero.
  • the offset is introduced into the RB number.
  • N RB (/?) represents the number of RBs in the RBG subset (labeled as the RBG subset of p) consisting of RBs numbered p.
  • the UE On the UE side, by the PDCCH decoding, the UE obtains the value of the i-th bit in the bitmap. According to the RBG subset flag p, the relocation of the RB is completed by the following formula: RBG subset,
  • DCI is transmitted by type 1A, 1B, 1C, and ID.
  • resource allocation type 2 When resource allocation type 2 is adopted: Resource allocation type 0, 1 uses PRB to indicate resources, and resource allocation type 2 uses VRB to indicate allocated resources.
  • the advantage of adopting VRB is that the resource scheduling can be continuously allocated, and then the VRB is allocated to the PRB in a local or distributed manner, and the signaling bit overhead is also saved.
  • the size of the carrier bandwidth determines the size of the RBG, which in turn determines the number of resource allocation bits in the DCI and the overall bit length of the DCI.
  • the Carrier Segment is an incompatible carrier.
  • the fragmented carrier cannot be used independently. It can only be used as part of the bandwidth of a backward compatible carrier to increase the transmission capability of the backward compatible carrier.
  • the carrier segments if specified, are defined as the bandwidth extensions of a backwards compatible component carrier (no larger than 110 RBs in total) and a mechanism to The utilization frequency resources in case new transmission bandwidths are needed in a backwards compatible way complementing carrier aggregation means ).
  • the fragment carrier When the fragment carrier is configured, its characteristics are considered: After adding the fragment carrier, one PDCCH is still used to indicate the resources of the backward compatible carrier and the fragment carrier as a whole. The addition of the fragment carrier will increase the total number of PRBs (also called RBs). Then, for the case where the fragment carrier is allocated to the UE, how to determine the RBG size in the face of the increased PRB, and the RBG after the introduction of the fragment carrier How to carry out the numbering can improve the flexibility of the base station without affecting the normal operation of the original backward compatible carrier and the old version of the UE, which is an urgent problem to be solved. Summary of the invention
  • the main purpose of the embodiments of the present invention is to provide a method and a device for determining an RBG size and number after configuring a fragment carrier, to solve different versions after the fragment carrier is configured.
  • the embodiment of the present invention provides a method for determining an RBG size and number after configuring a fragment carrier, where the method includes:
  • the eNB and the UE determine that the resource block group (RBG) size is equal to the sum of the bandwidth of the fragment carrier and the backward compatible carrier used for pairing with the pair RBG size;
  • the RBG size corresponding to the sum of the bandwidths of the fragment carrier and the backward compatible carrier used for pairing with it is:
  • the corresponding RBG size is 1.
  • the corresponding RBG size is 2;
  • the corresponding RBG size is 3;
  • the corresponding RBG size is 4.
  • the RB of the backward compatible carrier and the RB of the fragment carrier are regarded as a whole, and the RBG is divided into:
  • the RB of the backward compatible carrier and the RB of the fragment carrier are regarded as a whole, and the RBG is divided according to the determined RBG size, and each of the divided RBGs only includes the RB of the backward compatible carrier, Or an RB including only the fragment carrier, or an RB including the backward compatible carrier and an RB of the fragment carrier.
  • the method further includes:
  • the number of RBs included in one of the RBGs is allowed to be smaller than the determined RBG size.
  • the RB of the backward compatible carrier and the RB of the fragment carrier are regarded as two parts for dividing the RBG, as follows:
  • the RB of the backward compatible carrier and the RB of the fragment carrier are regarded as two parts, and the RBG is divided according to the determined RBG size, and only the RBs of the backward compatible carrier are included in each divided RBG. , or only the RBs of the slice carrier.
  • the method further includes:
  • the number of RBs of the backward compatible carrier and/or the number of RBs of the fragment carrier is not an integer multiple of the determined RBG size, one of the RBGs and/or the fragment carriers of the backward compatible carrier is allowed
  • the number of RBs included in one RBG is smaller than the RBG size.
  • the RBG of the divided backward compatible carrier and the RBG of the fragment carrier are numbered as follows:
  • the RBG of the divided backward compatible carrier and the RBG of the fragment carrier are numbered as follows:
  • RBGs of the backward compatible carrier Starting from 0, numbering the RBGs of the backward compatible carrier, starting from 0, sequentially according to the frequency band of the fragment carrier from low frequency to high frequency or high frequency to low frequency, sequentially to the fragment carrier RBG is numbered.
  • the embodiment of the present invention further provides an apparatus for determining an RBG size and number after a fragment carrier, including: an RBG determining unit, an RBG dividing unit, and an RBG numbering unit;
  • the RBG determining unit is configured to: after configuring the fragment carrier, determine that the RBG size is equal to an RBG size corresponding to a sum of bandwidths of the fragment carrier and a backward compatible carrier used in pair with the pair;
  • the RBG division unit is configured to: perform, according to the determined RBG size, the RB of the backward compatible carrier and the RB of the fragment carrier as one whole or two parts for RBG division; the RBG numbering unit, setting The RBG of the divided backward compatible carrier and the RBG of the fragment carrier are numbered.
  • the RBG determining unit is further configured to: when the sum of the bandwidths is less than or equal to 10 RBs, determine that the corresponding RBG size is 1; when the sum of the bandwidths is greater than or equal to 11 RBs and less than or equal to 26 RBs, Determining that the corresponding RBG size is 2; when the sum of the bandwidths is greater than or equal to 27 RBs and less than or equal to 63 RBs, determining that the corresponding RBG size is 3; when the sum of the bandwidths is greater than or equal to 64 RBs, and less than When it is equal to 110 RBs, it is determined that the corresponding RBG size is 4.
  • the RBG dividing unit is further configured to treat the RB of the backward compatible carrier and the RB of the fragment carrier as a whole, and perform RBG division according to the determined RBG size, and only the RBG after the division includes only The RB of the backward compatible carrier, or only the RB of the fragment carrier, or the RB of the backward compatible carrier and the RB of the fragment carrier.
  • the RBG dividing unit is further configured to treat the RB of the backward compatible carrier and the RB of the fragment carrier as two parts, and perform RBG division according to the determined RBG size, and only each RBG in the divided An RB including the backward compatible carrier, or a chase containing only the fragment carrier
  • the RBG numbering unit is further configured to number the RBGs of the backward compatible carrier starting from 0, and from the maximum value of the RBG number of the backward compatible carrier, according to the frequency band of the fragment carrier from the low frequency
  • the RBGs of the slice carriers are sequentially numbered in the order of high frequency or high frequency to low frequency.
  • the RBG numbering unit is further configured to number the RBGs of the backward compatible carrier starting from 0, and starting from 0, according to the frequency band of the fragment carrier from low frequency to high frequency or high frequency to low frequency
  • the RBGs of the fragment carriers are sequentially numbered.
  • the method and device for determining the RBG size and number after the fragment carrier is provided in the embodiment of the present invention, after the eNB configures the fragment carrier for the new version UE, the sum of the bandwidth of the RBG size fragment carrier and the backward compatible carrier used by the pair Corresponding RBG size; according to the determined RBG size, the RB of the backward compatible carrier and the RB of the fragment carrier are regarded as one whole or two parts for RBG division, and the RBG and the fragment carrier of the divided backward compatible carrier are used.
  • the RBG is numbered.
  • the foregoing solution of the embodiment of the present invention for a UE that does not allocate a fragment carrier (including an old version UE and a new version UE), implements flexible determination of an RBG size by using a bandwidth of the UE, and ensures that it is in a backward compatible carrier.
  • the work and the scheduling rules of the base station are not affected by any one.
  • the flexible RBG size can be determined according to the bandwidth of the fragment carrier, so that the base station can also be used for the UE.
  • the bandwidth condition flexibly determines the RBG size and number of the UE scheduled this time, which increases the flexibility of base station scheduling.
  • FIG. 1 is a schematic flowchart of a method for determining an RBG size and number after configuring a fragment carrier according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of determining an RBG size and number after configuring a fragment carrier according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of determining an RBG size and number after configuring a fragment carrier according to Embodiment 2 of the present invention
  • FIG. 4 is a schematic diagram of determining an RBG size and number after configuring a fragment carrier according to Embodiment 3 of the present invention.
  • FIG. 5 is a schematic diagram of determining the size and number of RBGs after configuring a fragment carrier according to Embodiment 4 of the present invention
  • FIG. 6 is a schematic diagram of determining an RBG size and number after a fragment carrier is configured according to Embodiment 4 of the present invention
  • FIG. 7 is a schematic structural diagram of an apparatus for determining an RBG size and number after configuring a fragment carrier according to an embodiment of the present invention.
  • the method for determining the size and number of the RBG after the fragment carrier is configured in the embodiment of the present invention, as shown in FIG. 1 , includes:
  • Step 101 After the eNB configures the fragment carrier for the UE, the eNB and the UE determine the RBG size corresponding to the sum of the bandwidths of the fragment carrier and the backward compatible carrier; and the backward forward carrier is paired with the fragment carrier.
  • the RBG size corresponding to the sum of the bandwidths is mainly determined according to Table 1, namely:
  • the corresponding RBG size is 1.
  • the corresponding RBG size is 2;
  • the corresponding RBG size is 3;
  • the corresponding RBG size is 4.
  • Step 102 Perform, according to the determined RBG size, the RB of the backward compatible carrier and the RB of the fragment carrier as one whole or two parts, and perform RBG division on the RBG of the divided backward compatible carrier and the RBG of the fragment carrier. Numbered.
  • the RB of the backward compatible carrier and the RB of the fragment carrier are regarded as one whole for RBG.
  • the division is:
  • the RB of the backward compatible carrier and the RB of the fragment carrier are regarded as a whole, and the RBG is divided according to the determined RBG size, and each divided RBG includes only the RB of the backward compatible carrier or only the fragment carrier.
  • the RBs of the backward compatible carrier and the RB of the fragment carrier are regarded as two parts for the RBG division, which is:
  • the RB of the backward compatible carrier and the RB of the fragment carrier are regarded as two parts, and the RBG is divided according to the determined RBG size, and each RBG after the division includes only the RB of the backward compatible carrier, or only the fragment is included.
  • the RB of the carrier is regarded as two parts, and the RBG is divided according to the determined RBG size, and each RBG after the division includes only the RB of the backward compatible carrier, or only the fragment is included.
  • the number of RBs of the backward compatible carrier and/or the number of RBs of the fragment carrier are not an integer multiple of the determined RBG size, allowing one of the RBGs of the backward compatible carrier and / or the number of RBs included in one of the RBGs of the fragment carrier is less than the RBG size.
  • the following RBG numbering mode can be adopted: starting from 0, numbering the backward RBGs of compatible carriers, and starting from the maximum value of the backward RBG number of the compatible carrier, according to the points
  • the RBGs of the fragment carriers are sequentially numbered from the low frequency to the high frequency or from the high frequency to the low frequency (as in the first embodiment, the second embodiment, and the fourth embodiment).
  • the following RBG numbering mode can also be adopted: Starting from 0, the RBGs of the backward compatible carriers are numbered, starting from 0, according to the frequency band of the fragment carrier from the low frequency The RBGs of the slice carriers are sequentially numbered in the order of high frequency or high frequency to low frequency (as in the third embodiment).
  • a scenario in which a backward compatible carrier and a fragment carrier are aggregated in an LTE-A system is mainly considered. Assume that two component carriers are configured in the LTE-A system and can be aggregated.
  • the UE may be a new version of the UE or an old version of the UE.
  • the new version UE aggregates a 5MHz (including 25 RBs) backward compatible carrier and a 1.4MHz (including 6 RB) fragment carrier.
  • UE 1 only uses a backward compatible carrier of 5 MHz, and determines that the RBG size corresponding to UE1 is:
  • the eNB configures a backward compatible carrier of 5 MHz for UE 1 and the new carrier bandwidth is 25 RBs (ie, RB).
  • the number is 25), according to Table 1, the corresponding RBG size is 2;
  • the UE 2 aggregation uses a 5 MHz backward compatible carrier and a 1.4 MHz fragment carrier to determine the RBG size corresponding to the UE 2 as follows:
  • the eNB configures the UE 2 to use a 1.4 MHz fragment carrier and a 5 MHz backward compatible carrier.
  • the corresponding RBG size is 3.
  • the RBG size determination method has no effect on the old version of the UE.
  • For the new version of the UE if the fragment carrier is used, no signaling is required, which increases the flexibility of the eNB scheduling.
  • Number for RBG Number according to the determined RBG size.
  • the RBs included in the backward compatible carrier and the fragment carrier are taken as a whole, and the RBG division is performed according to the determined RBG size P (that is, one RBG includes P RBs), and the RBG number is performed.
  • the carrier bandwidth is 25, and the corresponding RBG size is 2.
  • the RBs included in the carrier bandwidth can be divided into 13 RBGs, and the 13 RBGs are sequentially numbered. Preferably, the number can be numbered from 0. (0 ⁇ 12).
  • the number of RBs included in the backward compatible carrier is not an integer multiple of the RBG size, so the number of RBs included in the last RBG is allowed to be smaller than the RBG size. For example, as shown in FIG. 2, UE 1 The RBG numbered 12 contains only one RB.
  • the backward compatible carrier and all RBs included in the fragment carrier are used as a whole, and after RBG division, numbering is performed.
  • the carrier bandwidth of UE 2 is 31, and the corresponding RBG size is 3.
  • the carrier bandwidth can be divided into 11 RBGs, and the 11 RBGs are sequentially numbered.
  • the number can be numbered from 0.
  • the RBG number of the backward compatible carrier is from 0 to 8, and the RBG of the fragment carrier continues to be numbered from 8 to 10 from the maximum value of the RBG number of the backward compatible carrier. As can be seen from FIG.
  • the backward compatible carrier uses a fragmented carrier again, and the backward compatible carrier includes a number of RBs that are not a multiple of the RBG size (3), so the backward compatible carrier and the eighth RBG corresponding to the adjacent of the fragment carrier
  • the RB includes both the backward compatible carrier and the RB of the fragment carrier. It should be noted that for a RBG of a slice carrier, the RBG number can be performed in the order of low frequency to high frequency, as shown in Fig. 2; RBG number can also be performed in the order of high frequency to low frequency.
  • the eNB schedules UE1 and UE2 to operate the resource allocation type 0, 1, and 2 in 3GPP Release-10 when indicating the RBG allocation, and the difference is: due to the RBG of UE 1 and UE 2
  • the number is different, so there is a difference in the number of resource allocation bits used. That is, for UE 1 and UE 2, although the same backward compatible carrier is used, since the UE2 configuration uses the fragmented carrier, the RBG numbers in the backward compatible carrier are different, thus implementing the eNB in the same subframe.
  • the RBG size and number of the current scheduling of the UE are flexibly determined for the bandwidth condition used by the UE, thereby increasing the flexibility of the base station scheduling.
  • Embodiment 2 The main difference between this embodiment and the first embodiment is that the RBG division mode is different when the UE aggregates the backward compatible carrier and the fragment carrier.
  • RBG is divided into all the RBs included in the compatible carrier and the fragment carrier as a whole.
  • the RBs included in the backward compatible carrier and the fragment carrier are regarded as two parts respectively. Division.
  • the RBs of the backward compatible carrier and the RBs of the fragment carrier are divided into RBGs according to the determined RBG size (3).
  • the numbering rule is: The RBG of the backward compatible carrier is numbered from 0, and the RBG of the fragment carrier continues to be numbered from the maximum value of the RBG number of the backward compatible carrier.
  • the RB included in the carrier bandwidth is divided into two parts: a backward compatible carrier and a fragment carrier
  • the number of RBs included in a certain part is not an integer multiple of the RBG size, the part is allowed.
  • the number of RBs included in the last RBG is less than the RBG size.
  • the RBG number can be performed in the order of low frequency to high frequency, as shown in Fig. 3; RBG numbering can also be performed in the order of high frequency to low frequency.
  • RBGs are obtained, wherein the RBGs of the backward compatible carriers are numbered from 0 to 8, and the RBG of the fragment carrier is obtained.
  • the number of the RBG number from the backward compatible carrier continues to be numbered 9 to 10.
  • the number of RBs in the backward compatible carrier part is not a multiple of 3, so the last RBG (numbered 8) of the backward compatible carrier contains only one RB.
  • the RBG size determination mode and the RBG numbering mode of the embodiment may maximize the system benefits in some scenarios, such as the RBG size determined by the carrier bandwidth obtained after using the backward compatible carrier after the carrier is configured according to the configuration, and only based on
  • the RBG size determined by the carrier bandwidth of the backward compatible carrier is the same, it may be ensured that the RBG size and the RBG number of the UE1 and the UE2 in the backward compatible carrier are exactly the same.
  • the eNB may only schedule the UE2 in the backward compatible carrier. Transmit data, and use the same DCI format as UE1, mainly used to indicate resource allocation The number of bits is the same, avoiding the use of a new DCI format or adding a new number of bits indicating resource allocation, saving system resources.
  • the manner of determining the RBG size in this embodiment is the same as that in the first embodiment, and the main difference lies in the manner of the RBG number.
  • the RBG coding mode of the UE 1 is only the same as that of the first embodiment, and is not described here.
  • the RBs included in the backward compatible carrier and the fragment carrier are respectively RBG-divided, and are respectively numbered starting from 0.
  • the RBs (31) included in the carrier bandwidth are divided into two parts: a backward compatible carrier and a fragment carrier, and the RBs of the two parts are respectively determined according to the determined RBG size (3).
  • the RBG division is performed, and the numbering rule is:
  • the RBG of the backward compatible carrier is numbered from 0, and the RBG of the fragment carrier is also numbered from 0.
  • the RB included in the carrier bandwidth is divided into two parts: a backward compatible carrier and a fragment carrier, if the number of RBs included in a certain part is not an integer multiple of the RBG size, the part is allowed.
  • the number of RBs included in the last RBG is less than the RBG size.
  • RBGs are obtained, wherein the RBGs of the backward compatible carriers are numbered from 0 to 8, and the fragment carriers are in accordance with the low frequency.
  • the order to the high frequency is numbered from 0 to 1 (also in the order of high frequency to low frequency).
  • the advantage of such numbering is that the eNB within the fragment carrier can independently schedule a certain UE, and the number of bits indicating the resource allocation can be reduced at this time.
  • the number of RBs in the backward compatible carrier part is not a multiple of 3, so the last RBG (numbered 8) of the backward compatible carrier contains only one RB.
  • the RBG of the backward compatible carrier is numbered from 0, and the RBG of the slice carrier is low frequency to high.
  • the order of frequency or high frequency to low frequency is numbered starting from 0 (as in the third embodiment;).
  • the above division and numbering methods are all based on the configuration of a fragment carrier.
  • the division mode adopts the second type, in particular, coding.
  • the rules are:
  • the RBGs of the backward compatible carriers are numbered starting from 0. From the maximum value of the RBG number of the backward compatible carrier, the one or more fragment carriers of the high frequency portion are continued in the order of low frequency to high frequency or high frequency to low frequency. Number, and then continue to number one or more fragment carriers in the low frequency part in the order of low frequency to high frequency or high frequency to low frequency; or, firstly, low frequency to high frequency or high for one or more fragment carriers of the low frequency part The frequency-to-low frequency sequence continues to be numbered, and then the one or more slice carriers of the high frequency portion are numbered in the order of low frequency to high frequency or high frequency to low frequency (as in the fourth embodiment);
  • the RBGs of the backward compatible carriers are numbered starting from 0, and one or more of the fragment carriers of the high frequency portion are numbered starting from 0 in the order of low frequency to high frequency or high frequency to low frequency, and then one or more of the low frequency parts.
  • the slice carrier continues to be numbered in the order of low frequency to high frequency or high frequency to low frequency; or, one or more slice carriers of the low frequency part are numbered starting from 0 in the order of low frequency to high frequency or high frequency to low frequency, and then One or more of the slice carriers of the high frequency portion are numbered in the order of low frequency to high frequency or high frequency to low frequency (as in the fourth embodiment).
  • the new version of the UE aggregate uses a 10 MHz (including 50 RBs) backward compatible carrier, and two 1.4 MHz fragment carriers; wherein the two fragment carriers are respectively located on both sides of the backward compatible carrier.
  • the RBG size determination manner is the same as that in the first embodiment. The main difference is how the RBG number is performed when there are multiple fragment carriers in the system.
  • the RBG coding mode of the UE 1 is only the same as that of the first embodiment, and is not described here.
  • the RBG number can be used as follows: The RBG of the backward compatible carrier is numbered from 0; since the maximum value of the RBG number of the backward compatible carrier, the fragment carrier of the low frequency part is first followed. The sequence of low frequency to high frequency or high frequency to low frequency continues to be numbered, and then the fragment carrier of the high frequency part continues to be numbered in the order of low frequency to high frequency or high frequency to low frequency; or, the fragment carrier of the high frequency part is first followed. The sequence from low frequency to high frequency or high frequency to low frequency continues to be numbered, and the fragment carriers of the low frequency portion are numbered in the order of low frequency to high frequency or high frequency to low frequency.
  • the RBs (62) included in the carrier bandwidth are divided into two parts: a backward compatible carrier and a fragment carrier, and the RBs of the two parts are respectively determined according to the determined RBG size (3). Perform RBG division.
  • the numbering rule is: the RBG of the backward compatible carrier is numbered from 0 to 16 from 0, and the maximum value of the RBG number of the backward compatible carrier is 16 first, and the fragment carrier 1 of the low frequency part is first according to the low frequency to the high frequency (may also The sequence of high frequency to low frequency continues to be numbered 17 ⁇ 18, and the carrier 2 of the high frequency part continues to be numbered 19 ⁇ 20 according to the sequence of low frequency to high frequency (also high frequency to low frequency), as shown in Fig. 5. Shown.
  • the RBG of the backward compatible carrier is numbered from 0; the fragment carrier of the low frequency part is numbered starting from 0 in the order of low frequency to high frequency or high frequency to low frequency, and then to the high frequency part.
  • the slice carrier continues to be numbered in the order of low frequency to high frequency or high frequency to low frequency; or, one or more slice carriers of the high frequency portion are numbered starting from 0 in the order of low frequency to high frequency or high frequency to low frequency, One or more of the slice carriers of the low frequency portion are then numbered in the order of low frequency to high frequency or high frequency to low frequency.
  • the RBG of the backward compatible carrier is numbered from 0 to 16 from 0, and the fragment carrier 1 of the low frequency part is first started from 0 in the order of low frequency to high frequency (which may also be high frequency to low frequency).
  • the number is 0 ⁇ 1
  • the fragment carrier 2 of the high frequency part continues to be numbered 2 ⁇ 3 in the order of low frequency to high frequency (may also be high frequency to low frequency).
  • first number the fragment carrier 2 of the high frequency portion from 0, and continue to number the fragment carrier 1 of the low frequency portion.
  • an embodiment of the present invention provides an apparatus for determining an RBG size and number after a fragment carrier, including: an RBG determining unit, an RBG dividing unit, and an RBG numbering unit;
  • An RBG determining unit configured to determine, after configuring the fragment carrier, an RBG size equal to an RBG size corresponding to a sum of bandwidths of the fragment carrier and a backward compatible carrier used for pairing;
  • An RBG dividing unit configured to perform, according to the determined RBG size, the RB of the backward compatible carrier and the RB of the fragment carrier as one whole or two parts;
  • the RBG numbering unit is configured to number the RBG of the divided backward compatible carrier and the RBG of the fragment carrier.
  • the RBG determining unit is further configured to determine that the corresponding RBG size is 1 when the sum of the bandwidths is less than or equal to 10 RBs, and determine the corresponding RBG when the sum of the bandwidths is greater than or equal to 11 RBs and less than or equal to 26 RBs.
  • the size is 2; when the sum of the bandwidths is greater than or equal to 27 RBs and less than or equal to 63 RBs, the corresponding RBG size is determined to be 3; when the sum of the bandwidths is greater than or equal to 64 RBs and less than or equal to 110 RBs, the corresponding correspondence is determined.
  • the RBG size is 4.
  • the RBG dividing unit is further configured to: treat the RB of the backward compatible carrier and the RB of the fragment carrier as a whole, perform RBG division according to the determined RBG size, and include only the backward compatible carrier RB in each divided RBG. , or an RB that only includes a fragment carrier, or an RB that includes both a backward compatible carrier and a fragment carrier.
  • the RBG dividing unit is further configured to treat the RB of the backward compatible carrier and the RB of the fragment carrier as two parts, and perform RBG division according to the determined RBG size, and each of the divided RBGs only includes the backward compatible carrier. RB, or RB that only contains fragmented carriers.
  • the RBG numbering unit is further configured to number the RBGs of the backward compatible carrier starting from 0, and from the maximum value of the RBG number of the backward compatible carrier, according to the frequency band of the fragment carrier from low frequency to high frequency or high frequency to In the low frequency order, the RBGs of the fragment carriers are numbered in turn.
  • the RBG numbering unit is also used to number the RBGs of the backward compatible carrier starting from 0, and starting from 0, according to the frequency band of the fragment carrier from the low frequency to the high frequency or from the high frequency to the low frequency, sequentially the fragment carrier
  • the RBG is numbered.

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Abstract

本发明公开了一种配置分片载波后RBG大小和编号的确定方法，包括：增强基站（eNB）为终端（UE）配置分片载波后，eNB和UE确定资源块组（RBG）大小等于分片载波和后向兼容载波的带宽之和对应的RBG大小；后向兼容载波和分片载波配对使用；根据确定的RBG大小，将后向兼容载波的RB和分片载波的RB视为一个整体或两部分进行RBG的划分，对划分后的所述后向兼容载波的RBG和分片载波的RBG进行编号。本发明还公开了一种配置分片载波后RBG大小和编号的确定装置，通过本发明，可以解决配置了分片载波后，不同版本UE的RBG大小不统一导致的资源分配混乱问题。

Description

一种配置分片载波后 RBG大小和编号的确定方法和装置 技术领域
本发明涉及移动无线通信领域， 特别是指一种配置分片载波后资源块 组（RBG ) 大小和编号的确定方法和装置。 背景技术
随着移动通信产业的发展、 以及对移动数据业务需求的不断增长， 人 们对移动通信的速率和服务质量（Qos )的要求越来越高， 于是在第三代移 动通信（3G )还没有大规模商用之前， 就已经开始了对下一代移动通信系 统的研究和开发工作， 其中比较典型的是第三代合作伙伴计划 （3GPP )启 动的长期演进（ LTE )项目， LTE系统可提供的最高载波带宽为 20MHz (兆 赫兹）。
随着网络的进一步演进， 演进 LTE ( LTE-A )作为 LTE的演进系统， 可以提供高达 100MHz的载波带宽，支持更灵活更高质量的通信，同时 LTE 系统具备很好的后向兼容性。 在 LTE-A 系统中有多个分量载波（CC , Component Carrier ), 一个 LTE终端只能工作在某一个后向兼容的 CC上， 而能力较强的 LTE-A终端可以同时在多个 CC上进行传输。
LTE系统中， 在上行载波间隔为 15kHz时， 将时域的一个子帧以及频 域的 12个连续或非连续的子载波作为一个资源块（RB, Resource Block )0 RB根据频率是否连续分为物理资源块（PRB )和虚拟资源块（VRB ) 两种 类型， 是上、 下行调度的最小资源单位。
增强基站（eNB, enhanced Node B )进行资源调度时， 通过下行控制 信息 （DCI, Downlink Control Information )将资源调度情况传输给用户设 备（UE, User Equipment )。 传输 DCI 的物理信道称为物理下行控制信道 ( PDCCH, Physical Downlink Control CHannel )。 UE通过 PDCCH的 DCI 类型来解释资源分配字段的内容。 根据 DCI类型的不同， 对资源的指示也 不同。 每个 PDCCH中， 资源分配字段由两部分组成： 资源分配头和资源块 分配信息。 资源分配包括三种类型： 类型 0、 类型 1和类型 2。 类型 0和类 型 1使用相同数量的比特数， 在通过 DCI类型 1、 2、 2A、 2B、 2C传输时， 两者拥有完全相同的格式， 此时， 通过资源分配头 1比特来区分， 0表示类 型 0, 1表示类型 1。 而 DCI格式 1A, IB , 1C, 1D则用于类型 2传输。 貧 源分配类型 0、 1采用 PRB来指示资源， 资源分配类型 2采用 VRB来指示 所分配资源。
eNB进行资源调度时， 存在以下几种情况：
1、 DCI通过类型 1、 2、 2A、 2B、 2C传输， 且资源分配头比特值为 0 时： 在资源分配类型 0 中， 资源块分配信息包含一张资源组分配位图， 该 位图表示 eNB分配给特定 UE的资源块组（ RBG, Resource Block Group ) 信息。 RBG的大小 P取决于载波带宽， 其对应关系如表 1所示：
Figure imgf000004_0001
表 1
RBG的个数由载波带宽和 RBG大小共同确定： NR L /p , 其中 包含「 / 个大小为 P的 RBG ,和一个大小为 N^ - P l R 1 1 的 RBG。
RBG从低频开始编号。 RBG编号从 0到 NRBG - 1分别映射到最高有效位到 最低有效位上。
2、 DCI通过类型 1、 2、 2A、 2B、 2C传输， 且资源分配头比特值为 1 一个受调度的 UE指明分配的 RB。该方案按照表 1对 PRB分组，每个 RBG 中含有 p个 PRB ,将这些 PRB从 0到 P-1进行编号。选取一段连续的 RBG 中编号为 p ( 0<ρ<Ρ-1 )的 PRB组成 RBG子集。 eNB在该子集范围内对 UE 进行资源分配。
在类型 1中， 资源块分配信息被分成 3个字段：
第一个字段使用「log2(P)]个比特标记所选 RB在 RBG中的位置； 第二个字段使用 1比特标记是否使用偏移；
第三个字段包含一个位图， 该位图的每个比特用于表示选定的 RBG子 集中的一个 PRB。
RB按照频率的增长从最高有效位开始被映射到位图上。该位图的大小 定义为： Λ γρΕΐ -
Figure imgf000005_0001
「log2(P)] -1。 由于该方法中位图的大小小于「log2(P)] , 因此位图无法覆盖所有的
RBG, 在 RBG进行编号时， 需要进行偏移。 该类型的资源块分配信息中， 第二个字段标记是否使用偏移， 该字段为 0时， Ashift (/?) = 0不使用偏移。 此 时， RB的编号从最低频率开始， 从零依次递增； 该字段为 1时， 将在 RB 编号中引入偏移， 偏移取值为 Ashlft(P) = A subset(P) - B YPE1 , 其中
RBG
N RB (/?)表示编号为 p的 RB组成的 RBG子集（标志为 p的 RBG子集） 中的 RB数量。 N RBG
RB (/?)可通过如下公式获得:
Figure imgf000005_0002
在 UE端， 通过 PDCCH解码， UE获得位图中第 i个比特位的值， 根 据 RBG子集标志 p, RB的重新定位通过如下公式完成： RBG subset 、
"VRB (P) : P2 + p - P + {i + Asbiit (p)) mod P
Figure imgf000006_0001
3、 DCI通过类型 1A、 1B、 1C、 ID传输， 采用资源分配类型 2时： 资 源分配类型 0、 1是采用 PRB来指示资源， 资源分配类型 2就是采用 VRB 来指示所分配资源的。采用 VRB的好处就是资源调度时可以采用连续分配， 然后再通过本地或者分布式的方式将 VRB分配到 PRB ,同时还节省了信令 比特的开销。
从表 1中可以看出， 载波带宽的大小决定了 RBG的大小， 进而决定了 DCI中资源分配比特数的多少以及 DCI整体的比特长度。
分片载波（ Carrier Segment )是一种非兼容性的载波， 分片载波不能独 立使用， 只能作为某一后向兼容载波的带宽的一部分使用， 以增加后向兼 容载波的传输能力。 分片载波与配对的后向兼容载波的带宽之和不超过 HORBs ( Carrier segments, If specified, are defined as the bandwidth extensions of a backwards compatible component carrier (no larger than 110 RBs in total) and constitute a mechanism to utilize frequency resources in case new transmission bandwidths are needed in a backwards compatible way complementing carrier aggregation means )。
当配置了分片载波时， 考虑到其特性： 增加分片载波后仍然用一个 PDCCH来指示后向兼容载波和分片载波整体的资源。分片载波的加入会带 来 PRB (也称 RB ) 总数的增加， 那么针对为 UE分配了分片载波的情况， 面对增加的 PRB , RBG大小应如何确定， 以及引入分片载波后的 RBG编 号应如何进行， 才能即使得基站的灵活性得到提高， 又不影响原有后向兼 容载波及旧版本的 UE的正常工作， 是个亟待解决的问题。 发明内容
有鉴于此， 本发明实施例的主要目的在于提供一种配置分片载波后 RBG大小和编号的确定方法和装置， 以解决配置了分片载波后， 不同版本 UE的 RBG大小不统一导致的资源分配混乱问题。
为了实现上述目的， 本发明实施例的技术方案是这样实现的： 本发明实施例提供了一种配置分片载波后 RBG 大小和编号的确定方 法， 该方法包括：
增强基站（eNB ) 为终端 （UE ) 配置分片载波后， 所述 eNB和 UE确 定资源块组（RBG ) 大小等于所述分片载波和与其配对使用的后向兼容载 波的带宽之和对应的 RBG大小；
根据确定的 RBG大小， 将所述后向兼容载波的 RB和所述分片载波的 RB视为一个整体或两部分进行 RBG的划分， 对划分后的所述后向兼容载 波的 RBG和所述分片载波的 RBG进行编号。
所述分片载波和与其配对使用的后向兼容载波的带宽之和对应的 RBG 大小为：
所述带宽之和小于等于 10个 RB时， 对应的 RBG大小为 1;
所述带宽之和大于等于 11个 RB、且小于等于 26个 RB时，对应的 RBG 大小为 2;
所述带宽之和大于等于 27个 RB、且小于等于 63个 RB时，对应的 RBG 大小为 3;
所述带宽之和大于等于 64个 RB、 且小于等于 110个 RB时， 对应的 RBG大小为 4。
将所述后向兼容载波的 RB和所述分片载波的 RB视为一个整体进行 RBG的划分， 为：
将所述后向兼容载波的 RB和所述分片载波的 RB视为一个整体，按照 确定的 RBG大小进行 RBG的划分，划分后的每个 RBG内仅包含所述后向 兼容载波的 RB、 或仅包含所述分片载波的 RB、 或同时包含所述后向兼容 载波的 RB和所述分片载波的 RB。 进行 RBG的划分时 , 该方法还包括：
当所述后向兼容载波的 RB和所述分片载波的 RB 的总数不是确定的 RBG大小的整数倍时， 允许其中一个 RBG 内包含的 RB数量小于确定的 RBG大小。
将所述后向兼容载波的 RB和所述分片载波的 RB视为两部分进行 RBG 的划分， 为：
将所述后向兼容载波的 RB和所述分片载波的 RB视为两部分，分别按 照确定的 RBG大小进行 RBG的划分，划分后的每个 RBG内仅包含所述后 向兼容载波的 RB, 或仅包含所述分片载波的 RB。
进行 RBG的划分时， 该方法还包括：
当所述后向兼容载波的 RB的数量和 /或所述分片载波的 RB的数量不 是确定的 RBG大小的整数倍时， 允许后向兼容载波的其中一个 RBG和 /或 分片载波的其中一个 RBG内包含的 RB数量小于 RBG大小。
对划分后的所述后向兼容载波的 RBG和所述分片载波的 RBG进行编 号为：
从 0开始对所述后向兼容载波的 RBG进行编号， 并从所述后向兼容载 波的 RBG编号的最大值起，按照所述分片载波的频段从低频到高频或从高 频到低频的顺序， 依次对所述分片载波的 RBG进行编号。
对划分后的所述后向兼容载波的 RBG和所述分片载波的 RBG进行编 号为：
从 0开始对所述后向兼容载波的 RBG进行编号， 并从 0开始， 按照所 述分片载波的频段从低频到高频或从高频到低频的顺序， 依次对所述分片 载波的 RBG进行编号。
本发明实施例还提供了一种配置分片载波后 RBG大小和编号的确定装 置， 包括： RBG确定单元、 RBG划分单元和 RBG编号单元； 其中： 所述 RBG确定单元， 设置为在配置分片载波后， 确定 RBG大小等于 所述分片载波和与其配对使用的后向兼容载波的带宽之和对应的 RBG 大 小；
所述 RBG划分单元， 设置为根据确定的 RBG大小， 将所述后向兼容 载波的 RB和所述分片载波的 RB视为一个整体或两部分进行 RBG的划分； 所述 RBG编号单元， 设置为对划分后的所述后向兼容载波的 RBG和 所述分片载波的 RBG进行编号。
所述 RBG确定单元， 还设置为当所述带宽之和小于等于 10个 RB时， 确定对应的 RBG大小为 1; 当所述带宽之和大于等于 11个 RB、 且小于等 于 26个 RB时， 确定对应的 RBG大小为 2; 当所述带宽之和大于等于 27 个 RB、 且小于等于 63个 RB时， 确定对应的 RBG大小为 3; 当所述带宽 之和大于等于 64个 RB、 且小于等于 110个 RB时， 确定对应的 RBG大小 为 4。
所述 RBG划分单元， 还设置为将所述后向兼容载波的 RB和所述分片 载波的 RB视为一个整体， 按照确定的 RBG大小进行 RBG的划分， 划分 后的每个 RBG内仅包含所述后向兼容载波的 RB、 或仅包含所述分片载波 的 RB、 或同时包含所述后向兼容载波的 RB和所述分片载波的 RB。
所述 RBG划分单元， 还设置为将所述后向兼容载波的 RB和所述分片 载波的 RB视为两部分， 分别按照确定的 RBG大小进行 RBG的划分， 划 分后的每个 RBG内仅包含所述后向兼容载波的 RB, 或仅包含所述分片载 波的亂
所述 RBG编号单元， 还设置为从 0开始对所述后向兼容载波的 RBG 进行编号， 并从所述后向兼容载波的 RBG编号的最大值起， 按照所述分片 载波的频段从低频到高频或从高频到低频的顺序， 依次对所述分片载波的 RBG进行编号。 所述 RBG编号单元， 还设置为从 0开始对所述后向兼容载波的 RBG 进行编号， 并从 0开始， 按照所述分片载波的频段从低频到高频或从高频 到低频的顺序， 依次对所述分片载波的 RBG进行编号。
本发明实施例提供的配置分片载波后 RBG大小及编号的确定方法及装 置， eNB为新版本 UE配置分片载波后， RBG大小分片载波和与其配对 使用的后向兼容载波的带宽之和对应的 RBG大小；根据确定的 RBG大小， 将后向兼容载波的 RB 和分片载波的 RB 视为一个整体或两部分进行 RBG的划分，对划分后的后向兼容载波的 RBG和分片载波的 RBG进行 编号。 本发明实施例的上述方案， 对于没有分配使用分片载波的 UE (包 括旧版本的 UE和新版本的 UE ),实现了以 UE使用带宽大小灵活确定 RBG 大小， 保证其在后向兼容载波的工作、 以及基站的调度规则不受任何的影 响； 对于分配使用分片载波的 UE, 也可以实现灵活的根据分片载波的带宽 大小来确定适合自己的 RBG大小， 从而， 基站也可以针对 UE使用的带宽 情况灵活确定 UE本次调度的 RBG大小和编号，增加了基站调度的灵活性。 附图说明
图 1为本发明实施例配置分片载波后 RBG大小和编号的确定方法流程 示意图；
图 2 为本发明实施例一配置分片载波后 RBG 大小和编号的确定示意 图；
图 3 为本发明实施例二配置分片载波后 RBG 大小和编号的确定示意 图；
图 4 为本发明实施例三配置分片载波后 RBG 大小和编号的确定示意 图；
图 5为本发明实施例四配置分片载波后 RBG大小和编号的确定示意图 图 6为本发明实施例四配置分片载波后 RBG大小和编号的确定示意图 图 7本发明实施例配置分片载波后 RBG大小和编号的确定装置结构示 意图。 具体实施方式 本发明实施例提供的一种配置分片载波后 RBG 大小和编号的确定方 法， 如图 1所示， 包括：
步驟 101 , eNB为 UE配置分片载波后， eNB和 UE确定 RBG大小等 于分片载波和后向兼容载波的带宽之和对应的 RBG大小； 后向前容载波与 所述分片载波配对使用。
带宽之和对应的 RBG大小主要依据表 1确定， 即：
带宽之和小于等于 10个 RB时， 对应的 RBG大小为 1;
带宽之和大于等于 11个 RB、 且小于等于 26个 RB时， 对应的 RBG 大小为 2;
带宽之和大于等于 27个 RB、 且小于等于 63个 RB时， 对应的 RBG 大小为 3;
带宽之和大于等于 64个 RB、 且小于等于 110个 RB时， 对应的 RBG 大小为 4。
步驟 102, 根据确定的 RBG大小， 将后向兼容载波的 RB和分片载波 的 RB视为一个整体或两部分进行 RBG的划分， 对划分后的后向兼容载波 的 RBG和分片载波的 RBG进行编号。
其中， 对载波带宽包含的后向兼容载波的 RB和分片载波的 RB进行 RBG划分时， 分为两种情况：
一、 将后向兼容载波的 RB和分片载波的 RB视为一个整体进行 RBG 的划分， 为：
将后向兼容载波的 RB和分片载波的 RB视为一个整体， 按照确定的 RBG大小进行 RBG的划分， 划分后的每个 RBG内仅包含后向兼容载波的 RB、或仅包含分片载波的 RB、或同时包含后向兼容载波的 RB和分片载波 的 RB。
针对这种划分方式，存在如下的情况： 当后向兼容载波的 RB和分片载 波的 RB的总数不是确定的 RBG大小的整数倍时， 允许其中一个 RBG内 包含的 RB数量小于确定的 RBG大小。
二、 将后向兼容载波的 RB和分片载波的 RB视为两部分进行 RBG的 划分， 为：
将后向兼容载波的 RB和分片载波的 RB视为两部分，分别按照确定的 RBG大小进行 RBG的划分， 划分后的每个 RBG内仅包含后向兼容载波的 RB, 或仅包含分片载波的 RB。
针对这种划分方式，存在如下的情况： 当后向兼容载波的 RB的数量和 /或分片载波的 RB的数量不是确定的 RBG大小的整数倍时，允许后向兼容 载波的其中一个 RBG和 /或分片载波的其中一个 RBG内包含的 RB数量小 于 RBG大小。
进行 RBG编号时，
对于第一种划分方式和第二种划分方式都可以采用如下的 RBG编号方 式：从 0开始对后向兼容载波的 RBG进行编号，并从后向兼容载波的 RBG 编号的最大值起， 按照分片载波的频段从低频到高频或从高频到低频的顺 序， 依次对分片载波的 RBG进行编号（如后续实施例一、 实施例二、 实施 例四）。
对于第二种划分方式， 还可以采用如下的 RBG编号方式： 从 0开始对 后向兼容载波的 RBG进行编号， 并从 0开始， 按照分片载波的频段从低频 到高频或从高频到低频的顺序， 依次对分片载波的 RBG进行编号（如后续 实施例三）。
下面通过具体的实施例来说明上述的技术方案。
在本发明具体实施例中， 主要考虑 LTE-A系统中后向兼容载波和分片 载波聚合使用的场景。 假设 LTE-A系统中配置了两个分量载波， 可聚合使 用。 其中， UE可以是新版本 UE, 也可以是旧版本 UE。
实施例一
本实施例中， 新版本 UE聚合使用一个 5MHz (包含 25个 RB )的后向 兼容载波和一个 1.4MHz (包含 6个 RB ) 的分片载波。
一、 RBG大小的确定：
如图 2所示， UE 1仅仅使用了 5MHz的后向兼容载波， 确定 UE1对应 的 RBG大小为： eNB为 UE 1配置使用 5MHz的后向兼容载波后新的载波 带宽为 25个 RB (即 RB数目为 25 ), 根据表 1可知， 对应的 RBG大小为 2;
UE 2聚合使用一个 5MHz的后向兼容载波和一个 1.4MHz的分片载波， 确定 UE 2对应的 RBG大小为： eNB为 UE 2配置使用 1.4MHz的分片载波 和 5MHz的后向兼容载波后的载波带宽之和为 31(即 RB数目为： 6+25=31 ), 根据表 1可知， 对应的 RBG大小为 3。
此种 RBG大小的确定方式， 对于旧版本的 UE没有任何影响， 对于新 版本的 UE, 如果使用了分片载波， 不需要增加信令， 增加了 eNB调度的 灵活性。
二、 为 RBG编号： 按照确定的 RBG大小进行编号。
在该实施例中， 将后向兼容载波和分片载波包含的 RB作为一个整体， 按照确定 RBG大小 P进行 RBG划分（即一个 RBG包含 P个 RB ), 并进行 RBG编号。 例如： 对于 UE 1 , 其载波带宽为 25, 对应的 RBG大小为 2, 则可以将载波带 宽包含的 RB划分为 13个 RBG,并顺序对这 13个 RBG进行编号，较佳地， 可以从 0开始编号（0~12 )。 需要指出的是， 本实施例中后向兼容载波包含 的 RB的数量不为 RBG大小的整数倍， 因此允许最后一个 RBG包含的 RB 的数量小于 RBG大小， 例如， 从图 2中可知， UE 1的编号为 12的 RBG 中只包含了 1个 RB。
对于 UE 2, 将其使用的后向兼容载波和分片载波包含的所有 RB作为 一个整体， 进行 RBG划分后， 进行编号。 UE 2的载波带宽为 31 , 对应的 RBG大小为 3,则可以将载波带宽划分为 11个 RBG,并顺序对这 11个 RBG 进行编号， 较佳地， 可以从 0开始编号。 其中， 后向兼容载波的 RBG编号 从 0到 8,分片载波的 RBG自后向兼容载波的 RBG编号的最大值起继续编 号、从 8到 10, 从图 2中可知， 由于 UE 2既使用的后向兼容载波又使用了 分片载波， 且后向兼容载波包含的 RB的数量不是 RBG大小 （3 ) 的倍数， 因此后向兼容载波和分片载波的相邻处对应的第 8个 RBG中既包含了后向 兼容载波的 RB, 又包含了分片载波的 RB。 需要指出的是， 对于一个分片 载波的 RBG, 可以按照低频到高频的顺序进行 RBG编号， 如图 2所示； 也 可以按照高频到低频的顺序进行 RBG编号。
如图 2所示， eNB调度 UE1和 UE2, 在指示 RBG分配情况时， 沿用 3GPP Release-10中的资源分配类型 0、 1、 2的工作方式， 区别在于： 由于 UE 1和 UE 2的 RBG的数量不相同， 因此使用的资源分配比特的个数有差 别。 即对于 UE 1和 UE 2而言， 虽然使用相同的后向兼容载波， 但是由于 UE2配置使用了分片载波而使得后向兼容载波中的 RBG编号不同， 这样， 实现了 eNB在同一子帧内针对 UE使用的带宽情况灵活确定 UE本次调度 的 RBG大小和编号， 从而增加了基站调度的灵活性。
实施例二 该实施例与实施例一的主要区别在于 UE 聚合使用后向兼容载波和分 片载波时的 RBG划分方式不同。
优选地，实施例一将向兼容载波和分片载波包含的所有 RB作为一个整 体， 进行 RBG划分； 而本实施例是将后向兼容载波和分片载波包含的 RB 视为两部分分别进行 RBG划分。
如图 3所示， 对于 UE 2, 对后向兼容载波的 RB和分片载波的 RB分 别按照已确定的 RBG大小 （3 )进行 RBG划分。 编号规则为： 后向兼容载 波的 RBG从 0开始编号，分片载波的 RBG自后向兼容载波的 RBG编号的 最大值起继续编号。
需要指出的是，在将载波带宽包含的 RB分为后向兼容载波和分片载波 两部分的情况下， 如果其中某个部分包含的 RB的数量不是 RBG大小的整 数倍， 那么允许该部分的最后一个 RBG包含的 RB的数量小于 RBG大小。 另夕卜，对于一个分片载波的 RBG, 可以按照低频到高频的顺序进行 RBG编 号， 如图 3所示； 也可以按照高频到低频的顺序进行 RBG编号。
如图 3所示，对后向兼容载波和分片载波两部分的 RB分别划分后，得 到 11个 RBG, 其中， 后向兼容载波的 RBG从 0开始编号为 0~8, 分片载 波的 RBG按照低频到高频的顺序、自后向兼容载波的 RBG编号的最大值 8 起继续编号为 9~10。 其中， 后向兼容载波部分的 RB的数量不是 3的倍数， 因此后向兼容载波的最后一个 RBG (编号为 8 )只包含了一个 RB。
该实施例的 RBG大小确定方式和 RBG编号方式， 在一些场景下可以 使得系统利益最大化 , 如当根据配置使用后向兼容载波后分片载波后得到 的载波带宽确定的 RBG大小， 与仅仅根据后向兼容载波的载波带宽确定的 RBG大小相同时， 可以确保 UE1和 UE2在后向兼容载波中的 RBG大小和 RBG编号完全相同， 此种情况下， eNB可以仅调度 UE2在后向兼容载波中 的传输数据， 并且使用和 UE1相同的 DCI格式， 主要是用于指示资源分配 的比特数相同，避免使用新的 DCI格式或者新增加指示资源分配的比特数， 节省了系统资源。
实施例三
本实施例中确定 RBG大小的方式与实施例一相同，主要差别在于 RBG 编号的方式。
其中， UE 1仅使用后向兼容载波时的 RBG编码方式与实施例一相同， 此处不再赘述。 对于 UE 2使用后向兼容载波和分片载波的情况， 本实施例 是将后向兼容载波和分片载波包含的 RB分别进行 RBG划分， 并分别从 0 开始编号。
如图 4所示， 对于 UE 2, 将其载波带宽包含的 RB ( 31个）分为后向 兼容载波和分片载波两部分， 对这两部分的 RB分别按照已确定的 RBG大 小（3 )进行 RBG划分， 编号规则为： 后向兼容载波的 RBG从 0开始编号， 分片载波的 RBG也从 0开始编号。
需要指出的是，在将载波带宽包含的 RB分为后向兼容载波和分片载波 两部分的情况下， 如果其中某个部分包含的 RB的数量不是 RBG大小的整 数倍， 那么允许该部分的最后一个 RBG包含的 RB的数量小于 RBG大小。
如图 4所示，对后向兼容载波和分片载波两部分的 RB分别划分后，得 到 11个 RBG, 其中， 后向兼容载波的 RBG从 0开始编号为 0~8, 分片载 波按照低频到高频的顺序从 0开始编号为 0~1(也可以按照高频到低频的顺 序）。 这样编号的优点在于分片载波内 eNB可以独立调度某一 UE, 此时可 以减少指示资源分配的比特数。其中，后向兼容载波部分的 RB的数量不是 3 的倍数， 因此后向兼容载波的最后一个 RBG (编号为 8 )只包含了一个 RB。
或者，
后向兼容载波的 RBG从 0开始编号， 分片载波的 RBG按照低频到高 频或者高频到低频的顺序从 0开始编号 （如实施例三；)。
上述的划分方式和编号方式都是以配置了一个分片载波为例， 当配置 了多个分片载波， 且这多个分片载波不连续时， 划分方式采用第二种， 特 别地， 编码规则为：
后向兼容载波的 RBG从 0开始编号， 自后向兼容载波的 RBG编号的 最大值起， 先对高频部分的一个或多个分片载波按照低频到高频或者高频 到低频的顺序继续编号， 再对低频部分的一个或多个分片载波按照低频到 高频或者高频到低频的顺序继续编号； 或者， 先对低频部分的一个或多个 分片载波按照低频到高频或者高频到低频的顺序继续编号， 再对高频部分 的一个或多个分片载波按照低频到高频或者高频到低频的顺序继续编号 (如实施例四）；
或者，
后向兼容载波的 RBG从 0开始编号， 先对高频部分的一个或多个分片 载波按照低频到高频或者高频到低频的顺序从 0开始编号， 再对低频部分 的一个或多个分片载波按照低频到高频或者高频到低频的顺序继续编号； 或者， 先对低频部分的一个或多个分片载波按照低频到高频或者高频到低 频的顺序从 0开始编号， 再对高频部分的一个或多个分片载波按照低频到 高频或者高频到低频的顺序继续编号 （如实施例四）。
实施例四
本实施例中， 新版本 UE聚合使用一个 10MHz (包含 50个 RB ) 的后 向兼容载波，和两个 1.4MHz的分片载波； 其中两个分片载波分别位于后向 兼容载波的两侧， 如图 5所示。 本实施例中， RBG大小确定方式与实施例 一相同， 主要区别在于系统中存在多个分片载波时， RBG编号如何进行。
其中， UE 1仅使用后向兼容载波时的 RBG编码方式与实施例一相同， 此处不再赘述。 系统中存在多个分片载波时， RBG编号可采用如下方式： 后向兼容载 波的 RBG从 0开始编号； 自后向兼容载波的 RBG编号的最大值起， 先对 低频部分的分片载波按照低频到高频或者高频到低频的顺序继续编号， 再 对高频部分的分片载波按照低频到高频或者高频到低频的顺序继续编号； 或者， 先对高频部分的分片载波按照低频到高频或者高频到低频的顺序继 续编号， 再对低频部分的分片载波按照低频到高频或者高频到低频的顺序 继续编号。
如图 5所示， 对于 UE 2, 将其载波带宽包含的 RB ( 62个）分为后向 兼容载波和分片载波两部分， 对这两部分的 RB分别按照已确定的 RBG大 小 （3 )进行 RBG划分。
编号规则为：后向兼容载波的 RBG从 0开始编号为 0~16, 自后向兼容 载波的 RBG编号的最大值 16起， 先对低频部分的分片载波 1按照低频到 高频（也可以是高频到低频的 )顺序继续编号为 17~18, 再对高频部分的分 片载波 2按照低频到高频 （也可以是高频到低频）顺序继续编号为 19~20, 如图 5所示。
当然， 也可以先对高频部分的分片载波 2继续编号， 再对低频部分的 分片载波 1继续编号；
还可以采用如下的编号规则： 后向兼容载波的 RBG从 0开始编号； 先 对低频部分的分片载波按照低频到高频或者高频到低频的顺序从 0开始编 号， 再对高频部分的分片载波按照低频到高频或者高频到低频的顺序继续 编号； 或者， 先对高频部分的一个或多个分片载波按照低频到高频或者高 频到低频的顺序从 0开始编号， 再对低频部分的一个或多个分片载波按照 低频到高频或者高频到低频的顺序继续编号。
如图 6所示，后向兼容载波的 RBG从 0开始编号为 0~16,先对低频部 分的分片载波 1按照低频到高频 （也可以是高频到低频的）顺序从 0开始 编号为 0~1 ,再对高频部分的分片载波 2按照低频到高频（也可以是高频到 低频 )顺序继续编号为 2~3。
当然， 也可以先对高频部分的分片载波 2从 0开始编号， 再对低频部 分的分片载波 1继续编号。
为了实现上述方法， 如图 7所示， 本发明实施例提供了一种配置分片 载波后 RBG大小和编号的确定装置， 包括： RBG确定单元、 RBG划分单 元和 RBG编号单元； 其中：
RBG确定单元，用于在配置分片载波后，确定 RBG大小等于分片载波 和与其配对使用的后向兼容载波的带宽之和对应的 RBG大小；
RBG划分单元， 用于根据确定的 RBG大小， 将后向兼容载波的 RB和 分片载波的 RB视为一个整体或两部分进行 RBG的划分；
RBG编号单元， 用于对划分后的后向兼容载波的 RBG和分片载波的 RBG进行编号。
其中， RBG确定单元， 还用于当带宽之和小于等于 10个 RB时， 确定 对应的 RBG大小为 1; 当带宽之和大于等于 11个 RB、 且小于等于 26个 RB时， 确定对应的 RBG大小为 2; 当带宽之和大于等于 27个 RB、 且小 于等于 63个 RB时， 确定对应的 RBG大小为 3; 当带宽之和大于等于 64 个 RB、 且小于等于 110个 RB时， 确定对应的 RBG大小为 4。
RBG划分单元， 还用于将后向兼容载波的 RB和分片载波的 RB视为 一个整体， 按照确定的 RBG大小进行 RBG的划分， 划分后的每个 RBG内 仅包含后向兼容载波的 RB、 或仅包含分片载波的 RB、 或同时包含后向兼 容载波的 RB和分片载波的 RB。
RBG划分单元， 还用于将后向兼容载波的 RB和分片载波的 RB视为 两部分， 分别按照确定的 RBG大小进行 RBG的划分， 划分后的每个 RBG 内仅包含后向兼容载波的 RB, 或仅包含分片载波的 RB。 RBG编号单元，还用于从 0开始对后向兼容载波的 RBG进行编号，并 从后向兼容载波的 RBG编号的最大值起，按照分片载波的频段从低频到高 频或从高频到低频的顺序， 依次对分片载波的 RBG进行编号。
RBG编号单元，还用于从 0开始对后向兼容载波的 RBG进行编号，并 从 0开始， 按照分片载波的频段从低频到高频或从高频到低频的顺序， 依 次对分片载波的 RBG进行编号。
以上所述， 仅为本发明的较佳实施例而已， 并非用于限定本发明实施 例的保护范围。

Claims

权利要求书
1、 一种配置分片载波后 RBG 大小和编号的确定方法， 其中， 该方 法包括：
增强基站（eNB ) 为终端 （UE ) 配置分片载波后， 所述 eNB和 UE 确定资源块组（RBG ) 大小等于所述分片载波和后向兼容载波的带宽之 和对应的 RBG大小； 所述后向前容载波与所述分片载波配对使用；
根据确定的 RBG大小， 将所述后向兼容载波的 RB和所述分片载波 的 RB视为一个整体或两部分进行 RBG的划分， 对划分后的所述后向兼 容载波的 RBG和所述分片载波的 RBG进行编号。
2、 根据权利要求 1所述配置分片载波后 RBG大小和编号的确定方 法，其中，所述分片载波和后向兼容载波的带宽之和对应的 RBG大小为： 所述带宽之和小于等于 10个 RB时， 对应的 RBG大小为 1;
所述带宽之和大于等于 11个 RB、 且小于等于 26个 RB时， 对应的 RBG大小为 2;
所述带宽之和大于等于 27个 RB、 且小于等于 63个 RB时， 对应的 RBG大小为 3;
所述带宽之和大于等于 64个 RB、且小于等于 110个 RB时，对应的 RBG大小为 4。
3、 根据权利要求 1所述配置分片载波后 RBG大小和编号的确定方 法， 其中， 将所述后向兼容载波的 RB和所述分片载波的 RB视为一个整 体进行 RBG的划分， 为：
将所述后向兼容载波的 RB和所述分片载波的 RB视为一个整体，按 照确定的 RBG大小进行 RBG的划分，划分后的每个 RBG内仅包含所述 后向兼容载波的 RB、 或仅包含所述分片载波的 RB、 或同时包含所述后 向兼容载波的 RB和所述分片载波的 RB。
4、 根据权利要求 3所述配置分片载波后 RBG大小和编号的确定方 法， 其中， 进行 RBG的划分时， 该方法还包括：
当所述后向兼容载波的 RB和所述分片载波的 RB的总数不是确定的 RBG大小的整数倍时，允许其中一个 RBG内包含的 RB数量小于确定的 RBG大小。
5、 根据权利要求 1所述配置分片载波后 RBG大小和编号的确定方 法， 其中， 将所述后向兼容载波的 RB和所述分片载波的 RB视为两部分 进行 RBG的划分， 为：
将所述后向兼容载波的 RB和所述分片载波的 RB视为两部分，分别 按照确定的 RBG大小进行 RBG的划分，划分后的每个 RBG内仅包含所 述后向兼容载波的 RB, 或仅包含所述分片载波的 RB。
6、 根据权利要求 5所述配置分片载波后 RBG大小和编号的确定方 法， 其中， 进行 RBG的划分时， 该方法还包括：
当所述后向兼容载波的 RB的数量和 /或所述分片载波的 RB的数量不 是确定的 RBG大小的整数倍时， 允许后向兼容载波的其中一个 RBG和 / 或分片载波的其中一个 RBG内包含的 RB数量小于 RBG大小。
7、 根据权利要求 3、 4、 5或 6所述配置分片载波后 RBG大小和编 号的确定方法， 其中， 对划分后的所述后向兼容载波的 RBG和所述分片 载波的 RBG进行编号为：
从 0开始对所述后向兼容载波的 RBG进行编号， 并从所述后向兼容 载波的 RBG编号的最大值起， 按照所述分片载波的频段从低频到高频或 从高频到低频的顺序， 依次对所述分片载波的 RBG进行编号。
8、 根据权利要求 5或 6所述配置分片载波后 RBG大小和编号的确 定方法， 其中， 对划分后的所述后向兼容载波的 RBG和所述分片载波的 RBG进行编号为： 从 0开始对所述后向兼容载波的 RBG进行编号， 并从 0开始， 按照 所述分片载波的频段从低频到高频或从高频到低频的顺序， 依次对所述 分片载波的 RBG进行编号。
9、 一种配置分片载波后 RBG大小和编号的确定装置， 其中， 包括： RBG确定单元、 RBG划分单元和 RBG编号单元； 其中：
所述 RBG确定单元， 设置为在配置分片载波后， 确定 RBG大小等 于所述分片载波和后向兼容载波的带宽之和对应的 RBG大小； 所述后向 前容载波与所述分片载波配对使用；
所述 RBG划分单元， 设置为根据确定的 RBG大小， 将所述后向兼 容载波的 RB和所述分片载波的 RB视为一个整体或两部分进行 RBG的 划分；
所述 RBG编号单元， 设置为对划分后的所述后向兼容载波的 RBG 和所述分片载波的 RBG进行编号。
10、 根据权利要求 9所述配置分片载波后 RBG大小和编号的确定装 置， 其中， 所述 RBG确定单元， 还设置为当所述带宽之和小于等于 10 个 RB时， 确定对应的 RBG大小为 1; 当所述带宽之和大于等于 11个 RB、 且小于等于 26个 RB时， 确定对应的 RBG大小为 2; 当所述带宽 之和大于等于 27个 RB、 且小于等于 63个 RB时， 确定对应的 RBG大 小为 3; 当所述带宽之和大于等于 64个 RB、 且小于等于 110个 RB时， 确定对应的 RBG大小为 4。
11、 根据权利要求 9所述配置分片载波后 RBG大小和编号的确定装 置， 其中， 所述 RBG划分单元， 还设置为将所述后向兼容载波的 RB和 所述分片载波的 RB视为一个整体， 按照确定的 RBG大小进行 RBG的 划分， 划分后的每个 RBG内仅包含所述后向兼容载波的 RB、 或仅包含 所述分片载波的 RB、 或同时包含所述后向兼容载波的 RB和所述分片载 波的亂
12、 根据权利要求 9所述配置分片载波后 RBG大小和编号的确定装 置， 其中， 所述 RBG划分单元， 还设置为将所述后向兼容载波的 RB和 所述分片载波的 RB视为两部分， 分别按照确定的 RBG大小进行 RBG 的划分， 划分后的每个 RBG内仅包含所述后向兼容载波的 RB, 或仅包 含所述分片载波的 RB。
13、 根据权利要求 11或 12所述配置分片载波后 RBG大小和编号的 确定装置， 其中， 所述 RBG编号单元， 还设置为从 0开始对所述后向兼 容载波的 RBG进行编号， 并从所述后向兼容载波的 RBG编号的最大值 起， 按照所述分片载波的频段从低频到高频或从高频到低频的顺序， 依 次对所述分片载波的 RBG进行编号。
14、 根据权利要求 12所述配置分片载波后 RBG大小和编号的确定 装置， 其中， 所述 RBG编号单元， 还设置为从 0开始对所述后向兼容载 波的 RBG进行编号， 并从 0开始， 按照所述分片载波的频段从低频到高 频或从高频到低频的顺序， 依次对所述分片载波的 RBG进行编号。
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