WO2017167078A1 - 一种载波中prb资源分配方法、装置和计算机存储介质 - Google Patents

一种载波中prb资源分配方法、装置和计算机存储介质 Download PDF

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WO2017167078A1
WO2017167078A1 PCT/CN2017/077560 CN2017077560W WO2017167078A1 WO 2017167078 A1 WO2017167078 A1 WO 2017167078A1 CN 2017077560 W CN2017077560 W CN 2017077560W WO 2017167078 A1 WO2017167078 A1 WO 2017167078A1
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physical resource
cluster
resource block
value
clusters
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PCT/CN2017/077560
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English (en)
French (fr)
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苟伟
彭佛才
李新彩
杨玲
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中兴通讯股份有限公司
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453Resources in frequency domain, e.g. a carrier in FDMA
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/50Allocation or scheduling criteria for wireless resources
    • H04W72/53Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access, e.g. scheduled or random access
    • H04W74/08Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
    • H04W74/0833Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure

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  • the present disclosure relates to the field of data communications, and in particular, to a physical resource block (PRB) resource allocation method, apparatus, and computer storage medium in a carrier.
  • PRB physical resource block
  • LTE Long Term Evolution
  • some companies have proposed "recommending research on LTE deployment in unlicensed carriers", such as Qualcomm in the United States. It is believed that with the rapid growth of data services, in the near future, authorized carriers will not be able to withstand the huge amount of data brought by rapid business growth. Considering that LTE is deployed in an unlicensed carrier to share the data traffic in the authorized carrier, the data volume pressure brought by the service growth can be solved.
  • the unlicensed carrier has the following characteristics: on the one hand, since the unlicensed carrier does not need to be purchased, or the carrier resource is zero cost, the unlicensed carrier is free or low-cost; on the other hand, since the individual and the enterprise can participate in the deployment, the device The quotient equipment is also available, so the admission requirements of the unlicensed carrier are low; in addition, the unlicensed carrier is shared, and some sharing can be considered when multiple different systems are operating at the same time or when different operators of the same system operate. The way resources are used to improve carrier efficiency.
  • LTE deployment has obvious advantages in unlicensed carriers, in the process of deployment, there are still problems: among them, there are many wireless access technologies (crossing different communication standards, cooperation is difficult, and network topology is diverse) ) and many wireless access sites (large number of users, difficult collaboration, centralized management overhead). Due to the large number of wireless access technologies, there will be various wireless systems in the unlicensed carrier, which are difficult to coordinate with each other and have serious interference. Therefore, for LTE deployment in unlicensed carriers, there is still a need to support the regulation of unlicensed carriers. Most countries require the system to support the Listen Before Talk (LBT) mechanism when deployed in unlicensed carriers. The LBT mechanism can avoid interference caused by the simultaneous use of unlicensed carriers between adjacent systems.
  • LBT Listen Before Talk
  • the neighboring transmission node can avoid interference caused by the simultaneous transmission of the unlicensed carrier by the neighboring transmission nodes of the same system through the contention backoff mechanism.
  • the regulation stipulates that devices using unlicensed carriers (including base stations and user equipments (UEs)) need to perform LBT mechanism (ie, Clear Channel Assessment (CCA)) before transmission, when the channel is idle, The device can use the unlicensed carrier channel for data transmission.
  • LBT mechanism ie, Clear Channel Assessment (CCA)
  • the random access design in the existing LTE system needs to be modified to satisfy the LTE system operation in the unlicensed carrier.
  • the subframe of uplink random access is composed of the following parts. See Figure 1, including the cyclic prefix (CP) and the random access sequence (Tseq). There is also a guard interval (GT) after the sequence of random access in the actual implementation, that is, the channel remains idle, and the device performing random access does not. Send a signal). That is to say, the sub-frame includes CP, Tseq and GT in turn, and the sum between the three is the duration of one subframe (1 ms or 30720 samples).
  • CP cyclic prefix
  • GT guard interval
  • the UE establishes a connection with the cell through a random access procedure and obtains uplink synchronization. Only when uplink synchronization is obtained can the UE perform uplink transmission.
  • the main purposes of random access are: 1) obtaining uplink synchronization; 2) assigning a unique identifier to the UE - Cell Radio Network Temporary Identity (C-RNTI).
  • C-RNTI Cell Radio Network Temporary Identity
  • one subframe has a duration of 1 ms, and includes 14 equal-length OFDM symbols in the standard cyclic prefix (including 12 equal-length OFDM symbols when the CP is extended).
  • resource allocation is performed in units of PRB pairs.
  • Each PRB is composed of 12 subcarriers in the frequency domain and 7 symbols in the frequency domain.
  • the 2 PRBs consecutive in the subframe are a PRB pair.
  • the PRB allocation for uplink random access sequence transmission in the LTE system is:
  • the PRB allocation of the uplink random access sequence of the current LTE system is characterized in that a group of uplink random access PRB resources are composed of 6 consecutive (frequency domain).
  • the PRB composition is, for example, illustrated in FIG. 1, and the 6 PRBs are always located at both ends of the frequency domain of the subframe.
  • up to six groups of uplink random access PRB resources are supported in one subframe at the same time, and are respectively located in 18 consecutive PRBs at both ends of the frequency domain, as shown in FIG. 2 .
  • the basic feature is that a group of uplink random access PRB resources are consecutive 6 PRBs, and are located in PRBs at both ends of the frequency domain. A large number of PRBs in the middle of the system bandwidth are not used for uplink random access.
  • the random access sequence is mapped to the foregoing set of PRBs for transmission. For example, if the system configures a set of randomly accessed PRB resources in one subframe, the UE sends an uplink random access sequence to the base station in the set of PRB resources. .
  • the bandwidth of the transmitted data is too small, so that the signal energy averaged to the entire carrier is lower than the predetermined CCA energy detection threshold, so that other devices in the CCA detection will find that the carrier is idle, thereby using the carrier, so that two The simultaneous use of unlicensed carriers by the device can cause interference with each other.
  • the bandwidth of the data transmitted by the device is concentrated in a certain part of the carrier frequency domain, especially at both ends of the frequency domain, so that when other devices perform CCA detection of the unlicensed carrier, if only part of the bandwidth is detected, for example, the occupied device is not detected. Sending the 10 MHz bandwidth of the data, then obviously, the other device will find that the channel is idle, and thus the interference occurs when the device uses the next subframe and uses 10 MHz of data before transmission.
  • the random access PRB does not meet the requirements of the above unlicensed carrier. Therefore, if the LTE system is deployed in an unlicensed carrier, it needs to be redesigned to meet the requirements of the regulation.
  • the embodiments of the present disclosure provide a PRB resource allocation method, apparatus, and computer storage medium in a carrier.
  • the embodiment of the present disclosure provides a PRB resource allocation method in a carrier, including:
  • One or more PRB pairs are selected from each cluster as PRB pair resources for transmitting data.
  • the data includes one or more of uplink physical random access channel (PRACH) data, physical uplink shared channel (PUSCH) data, physical uplink control channel (PUCCH) data, and sounding reference symbols (SRS).
  • PRACH physical random access channel
  • PUSCH physical uplink shared channel
  • PUCCH physical uplink control channel
  • SRS sounding reference symbols
  • dividing the plurality of clusters in the PRB resource according to a predetermined clustering manner includes:
  • N1 is the number of PRB pairs included in each cluster.
  • the determining the number of the initial PRB pair of each cluster include:
  • the total number of resources for the uplink PRB The total number of resources for the uplink PRB;
  • the PRB pair offset when assigning to the cluster The range of values is
  • K is the interval between PRB pairs at the same position in the cluster of adjacent clusters whose cluster numbers are both odd, or K is the interval between PRB pairs at the same position in the cluster of adjacent clusters whose even cluster numbers are even;
  • f RA represents the number of the cluster
  • the number of the starting PRB pair for the cluster is the number of the starting PRB pair for the cluster.
  • the determining the number of the initial PRB pair of each cluster include:
  • the total number of resources for the uplink PRB The total number of resources for the uplink PRB;
  • the range of values is The PRB pair offset when assigning to the cluster
  • K is the interval between PRB pairs at the same position in the cluster of adjacent clusters whose cluster numbers are both odd, or K is the interval between PRB pairs at the same position in the cluster of adjacent clusters whose even cluster numbers are even;
  • f RA represents the number of the cluster
  • Y is the number of consecutive PRB pairs supported in each cluster.
  • T is used to describe which PRB pair in each cluster is allocated, and the value of T is greater than or equal to 0 and less than or equal to Y-1;
  • P describes which PRB pairs are assigned according to the PRB pair number of the system bandwidth.
  • the receiving node when the method is applied to the UE, the receiving node receives one of the value of K or the value of f RA that is notified by the base station, so that the UE determines another according to the value of the notification and the system bandwidth. value.
  • the determining the value of the other according to the value of the notification and the system bandwidth includes:
  • one of the value of K or the value of f RA notified by the receiving base station by signaling is performed in one of the following manners:
  • DCI downlink control information
  • the receiving base station receives one of the value of K or the value of f RA notified by a broadcast type radio resource control (RRC) message;
  • RRC radio resource control
  • K and/or f RA are used as parameters of a cell or carrier level, one of the value of K or the value of f RA notified by the base station through the public DCI is received;
  • the receiving base station uses one of the value of K or the value of f RA notified by the UE-specific DCI;
  • the receiving base station uses one of the value of K or the value of f RA of the DCI notification corresponding to the specific PDCCH.
  • the selecting one or more PRB pairs from each cluster as the PRB pair resources of the uplink random access includes:
  • a PRB pair is selected from each cluster as a PRB pair resource for transmitting data; wherein selecting one PRB pair from each cluster is performed in one of the following manners:
  • the DCI is the DCI corresponding to the specific PDCCH.
  • the selecting one or more PRB pairs from each cluster as the PRB pair resources for sending data includes:
  • a PRB pair of the same number of PRB pairs is selected from each cluster as a PRB pair resource for transmitting data; wherein selecting one PRB pair from each cluster is performed as follows:
  • the first i PRB pairs in each cluster are selected; where i is a positive integer.
  • the value of K is determined according to one of the following ways:
  • Mode 1 Select a K value that enables all clusters to be evenly distributed throughout the system bandwidth.
  • the selected K value is such that the even numbered clusters are evenly distributed, and the difference between the interval between the adjacent even clusters and the odd clusters is minimized; or, the selection makes the number Uniformly distributed between odd clusters, and the difference between the interval between adjacent even clusters and odd clusters is minimized;
  • Mode 3 Select a K value that enables all clusters to be evenly distributed throughout the system bandwidth.
  • the K value is selected such that the number is even between the clusters. Uniformly distributed, and minimizes the difference between the interval between adjacent even and odd clusters and K; or, selects evenly distributed between clusters with odd numbers, and makes adjacent even clusters and odd numbers The difference between the intervals between the clusters and K is the smallest.
  • the transmission data is the uplink random access channel signal
  • 6 PRB pairs are selected from the allocated PRB pairs to carry the uplink random access.
  • the foregoing solution further includes: sending, for each set of random access allocated PRB pairs, the remaining PRB pairs, any padding data; or repeatedly transmitting the uplink random sequence and the corresponding CP, where the repetition includes all repetitions or partial repetitions.
  • the predetermined rule is: selecting the first six, or the last six, or the middle six of the PRB pair numbers of each group of uplink random access to send a complete uplink random access sequence and corresponding CP.
  • the value of the T notified by the base station is received, where T is one or more values, and T is a PRB pair number in the cluster.
  • each set of T value or T value is calculated by the P value corresponding to the PRB pair resource allocated to a UE or a data block TB allocated PRB pair resource.
  • the PRB pair resource corresponding to the P value obtained by each set of T value or T value is a set of randomly accessed PRB pair resources.
  • the embodiment of the present disclosure further provides a carrier-in-progress PRB resource allocation apparatus, where the apparatus includes:
  • the clustering unit is configured to divide the PRB resources into multiple clusters according to a predetermined clustering manner; wherein the number of PRB pairs included in each cluster is the same;
  • the PRB pair selection unit is configured to select one or more PRB pairs from each cluster as PRB pair resources for transmitting data.
  • the clustering unit is further configured to:
  • N1 is the number of PRB pairs included in each cluster.
  • the PRB pair selection unit includes:
  • a first selection module configured to select one PRB pair from each cluster as a PRB pair resource for transmitting data; wherein the first selection module selects one PRB pair from each cluster in one of the following manners:
  • the notification unit is further configured to notify the UE of the number of the selected PRB pair in the specific cluster by using the RRC message or the DCI information; the DCI is the DCI corresponding to the specific PDCCH.
  • the PRB pair selection unit includes:
  • a second selection module configured to select the same number of PRB pairs from each cluster as PRB pair resources for transmitting data; wherein selecting one PRB pair from each cluster is performed as follows:
  • the first i PRB pairs in each cluster are selected; where i is a positive integer.
  • the embodiment of the present disclosure further provides a computer storage medium, the computer storage medium comprising a set of instructions that, when executed, cause at least one processor to perform the above-described PRB resource allocation method in a carrier.
  • a plurality of clusters are divided into PRB resources according to a predetermined clustering manner; wherein, the number of PRB pairs included in each cluster is the same; and one or more PRBs are selected from each cluster.
  • PRB pair resources that are sending data.
  • FIG. 1 is a schematic diagram of a PRB pair resource of an uplink random access in an existing LTE FDD mode
  • 2 is a schematic diagram of PRB pair resources with 6 sets of uplink random access in an existing LTE TDD mode subframe
  • FIG. 3 is a schematic diagram of resources allocated to 6 clusters in a subframe according to an embodiment of the present disclosure
  • FIG. 4 is a schematic diagram of resources allocated to 10 clusters in a subframe according to an embodiment of the present disclosure.
  • the embodiment of the present disclosure provides a PRB resource allocation method in a carrier, including:
  • One or more PRB pairs are selected from each cluster as PRB pair resources for transmitting data.
  • the method of the embodiments of the present disclosure may be applied to a base station and a UE.
  • the base station divides the PRB resources into multiple clusters according to a predetermined clustering manner; wherein the number of PRB pairs included in each cluster is the same; One or more PRB pairs are selected in a cluster as PRB pair resources for receiving data.
  • the UE divides the PRB resources into multiple clusters according to a predetermined clustering manner; wherein the number of PRB pairs included in each cluster is the same; selecting one from each cluster Or multiple PRB pairs as PRB pair resources for transmitting data.
  • the data includes one or more of uplink PRACH data, uplink PUSCH data, uplink PUCCH data, and SRS.
  • dividing the plurality of clusters in the PRB resource according to a predetermined clustering manner includes:
  • N1 is the number of PRB pairs included in each cluster.
  • the determining the number of the initial PRB pair of each cluster include:
  • the total number of resources for the uplink PRB The total number of resources for the uplink PRB;
  • the PRB pair offset when assigning to the cluster The range of values is
  • K is the interval between PRB pairs at the same position in the cluster of adjacent clusters whose cluster numbers are both odd, or K is the interval between PRB pairs at the same position in the cluster of adjacent clusters whose even cluster numbers are even;
  • f RA represents the number of the cluster
  • the number of the starting PRB pair for the cluster is the number of the starting PRB pair for the cluster.
  • the determining the number of the initial PRB pair of each cluster include:
  • the total number of resources for the uplink PRB The total number of resources for the uplink PRB;
  • the range of values is The PRB pair offset when assigning to the cluster
  • K is the interval between PRB pairs at the same position in the cluster of adjacent clusters whose cluster numbers are both odd, or K is the interval between PRB pairs at the same position in the cluster of adjacent clusters whose even cluster numbers are even;
  • f RA represents the number of the cluster
  • Y is the number of consecutive PRB pairs supported in each cluster.
  • the method further includes:
  • T is used to describe which PRB pair in each cluster is allocated, and the value of T is greater than or equal to 0 and less than or equal to Y-1;
  • P describes which PRB pairs are assigned according to the PRB pair number of the system bandwidth.
  • the base station notifies one of the value of K or the value of f RA by signaling, so that the UE determines the value of the other according to the value of the notification and the system bandwidth. That is, when the method of the embodiment of the present disclosure is applied to the UE, the UE receives one of the value of K notified by the base station or the value of f RA , so that the UE according to the value of the notification and the system bandwidth. Determine the value of the other.
  • determining the value of the other according to the value of the notification and the system bandwidth includes:
  • one of the value of the notification K or the value of the f RA (the one of the value of the K received by the UE to be signaled by the UE or the value of f RA ) is as follows:
  • the UE receives one of the value of K notified by the base station through the DCI or the value of f RA ;
  • the RRC message is sent by the broadcast type, that is, the UE receives one of the value of K or the value of f RA notified by the base station through the broadcast type RRC message;
  • K and/or f RA When K and/or f RA is used as a parameter of a cell or carrier level, it is sent by a common DCI, that is, the UE receives one of the value of K notified by the base station through the public DCI or the value of f RA ;
  • the UE-specific DCI transmission is used, that is, the UE receives one of the value of K or the value of f RA that the base station uses the UE-specific DCI notification;
  • the DCI corresponding to the specific PDCCH (such as the PDCCH order) is used, that is, the value of the K that the UE receives the DCI notification corresponding to the specific PDCCH (such as the PDCCH order) or One of the values of f RA .
  • the selecting one or more PRB pairs from each cluster as the PRB pair resources of the uplink random access includes:
  • a PRB pair is selected from each cluster as a PRB pair resource for transmitting data; wherein selecting one PRB pair from each cluster is performed in one of the following manners:
  • the base station notifies the number of the selected PRB pair in the specific cluster by the RRC message or the DCI; the DCI is the DCI corresponding to the specific PDCCH (such as the PDCCH order). That is, when an embodiment of the present disclosure is applied to a UE, the receiving base station passes RRC The number of the selected PRB pair in the specific cluster or the DCI notification; the DCI is the DCI corresponding to the specific PDCCH (such as PDCCH order).
  • the selecting one or more PRB pairs from each cluster as the PRB pair resources for sending data includes:
  • a PRB pair of the same number of PRB pairs is selected from each cluster as a PRB pair resource for transmitting data; wherein selecting one PRB pair from each cluster is performed as follows:
  • the first i PRB pairs in each cluster are selected; where i is a positive integer.
  • the value of K is determined according to one of the following ways:
  • Mode 1 Select a K value that enables all clusters to be evenly distributed throughout the system bandwidth.
  • the selected K value is such that the clusters with the even number are evenly distributed, and the difference between the interval between the adjacent even clusters and the odd clusters is minimized; or, the selection is made to be odd.
  • the clusters are evenly distributed, and the difference between the interval between the adjacent even clusters and the odd clusters is minimized;
  • Mode 3 Select a K value that enables all clusters to be evenly distributed throughout the system bandwidth.
  • the K value is selected such that the number is even between the clusters. Uniformly distributed, and minimizes the difference between the interval between adjacent even and odd clusters and K; or, selects evenly distributed between clusters with odd numbers, and makes adjacent even clusters and odd numbers The difference between the intervals between the clusters and K is the smallest.
  • the transmission data is the uplink random access channel signal
  • 6 PRB pairs are selected from the allocated PRB pairs to carry the uplink random.
  • the method further includes: sending, for each group of random access allocated PRB pairs, the remaining PRB pairs, any padding data; or repeatedly sending the uplink random sequence and the corresponding CP, where the repetition includes all repetitions or partial repetitions .
  • the predetermined rule is: selecting the first six, or the last six, or the middle six of the PRB pair numbers of each group of uplink random access to send a complete uplink random Access sequence and corresponding CP.
  • the base station notifies the value of the T to the UE, where T is one or more values, and T is a PRB pair number in the cluster. That is, when the method of the embodiment of the present disclosure is applied to the UE, the UE receives the value of the T notified by the base station, where T is one or more values, and T is a PRB pair number in the cluster.
  • each set of T value or T value is calculated by the P value corresponding to the PRB pair resource allocated to a UE or a data block TB allocated PRB pair resource.
  • the PRB pair resource corresponding to the P value obtained by each set of T value or T value is a set of randomly accessed PRB pair resources.
  • the embodiment of the present disclosure further provides another method for determining a PRB resource in a carrier, including:
  • One or more PRB pairs are selected from each cluster as PRB pair resources for transmitting data.
  • the UE divides multiple clusters in the PRB resources according to the same or similar methods in the foregoing embodiments, and selects one or more PRB pairs from each cluster according to the same or similar methods in the foregoing embodiments.
  • the PRB pair resource for sending data will not be described here.
  • the embodiments of the present disclosure mainly include two aspects, resource allocation for uplink random access and allocation for discrete PRB resources.
  • Resource allocation for uplink random access includes:
  • the random access resources still use the size of the six PRB pairs.
  • the specific frequency domain positions of the clusters of the six PRB pairs are obtained by the following equation, and then one of each cluster is selected.
  • the PRB pair constitutes a resource for random access.
  • Mode 2 corresponding to Embodiment 2, in order to better occupy and concentrate the signal energy on the 80% bandwidth requirement, allocate more resources for random access, and the discrete interval is smaller.
  • mode 1 add more clusters to achieve the purpose of allocating more PRBs, and then adopt a method of repeated mapping for more PRB pairs.
  • Mode 3 corresponding to Embodiment 3, by increasing the subcarrier spacing when the existing random access is transmitted, for example, the interval is increased from 1.25 KHz to 2.5 KHz, sequence mapping and resource allocation.
  • a new resource allocation method is given as PUSCH, PUCCH or SRS or random access resources.
  • the flexible PRB pair or frequency domain resource allocation is implemented in the equation by using the following parameters and some conventions.
  • the total number of resources for the uplink PRB is the total number of resources for the uplink PRB.
  • the range of values is The number of the frequency domain PRB pair in the system bandwidth may be a high layer signaling notification or notified by DCI.
  • K is a cluster of adjacent clusters (the cluster numbers are all odd or even, if the interval between the two clusters whose cluster number is even and the cluster number is odd may be K or not K) between the PRB pairs in the same position
  • the interval, calculated by the PRB pair can be obtained from the power spectral density of the signal in the carrier (for example, assuming that the entire bandwidth, the number of PRB pairs in the cluster are numbered sequentially from low frequency to high frequency. Number 3 and number 9
  • the number of intervals between PRB pairs is 6, and the actual interval of PRB pairs is 5 PRB pairs.
  • the K value can also be notified to the UE through DCI or higher layer signaling.
  • f RA indicates the number of clusters or the number of clusters. If the number of clusters is represented, the value is 0 to the maximum number minus 1. If the number of clusters is indicated, the total number of clusters is the number of clusters.
  • the K value can be implicitly given in the case given by f RA for the corresponding system bandwidth. For example, at 20 MHz, when f RA is 10, the corresponding implied K is 10; when f RA is 6, the corresponding implied K is 16; when f RA is 12, the corresponding implied K is 8. From only the value of f RA needs to be notified, and the signaling overhead is reduced. And the value of f RA can also set a reasonable range of values to reduce the overhead of f RA .
  • Y is the number of consecutive PRB pairs supported in each cluster. Each cluster is the same. If the number of PRB pairs supported in each cluster is a fixed value, or a value within a given range, the signaling overhead of Y can also be reduced. If fixed to a fixed value, the parameter can be solidified, and the parameter is no longer sent. Signaling of parameters.
  • the number of the starting PRB pair for each Y consecutive PRB pairs (called a cluster) (the number of PRB pairs in the entire PRB pair in the entire bandwidth).
  • T describing which or those PRB pairs in each cluster are assigned.
  • the value is greater than or equal to 0 and less than or equal to Y-1.
  • the PRB pair resource corresponding to the obtained P value (or the set of values) of each T value is a set of randomly accessed PRB pair resources.
  • each group uses 6 PRB pairs, then 36 PRB pairs are needed, and the following methods are used to allocate PRB resources.
  • the total number of resources for the uplink PRB is the total number of resources for the uplink PRB.
  • the range of values is The number of the frequency domain PRB pair in the system bandwidth may be a high layer signaling notification or notified by DCI.
  • K is a cluster of adjacent clusters (the cluster numbers are all odd or even, if the interval between the two clusters whose cluster number is even and the cluster number is odd may be K or not K) between the PRB pairs in the same position
  • the interval, calculated by the PRB pair can be obtained from the power spectral density of the signal in the carrier (for example, assuming that the entire bandwidth, the number of PRB pairs in the cluster are numbered sequentially from low frequency to high frequency. Number 3 and number 9
  • the number of intervals between PRB pairs is 6, and the actual interval of PRB pairs is 5 PRB pairs.
  • the K value can also be notified to the UE through DCI or higher layer signaling.
  • f RA indicates the number of clusters or the number of clusters. If the number of clusters is represented, the value is 0 to the maximum number minus 1. If the number of clusters is indicated, the total number of clusters is the number of clusters.
  • the K value can be implicitly given in the case given by f RA for the corresponding system bandwidth. For example, at 20 MHz, when f RA is 10, the corresponding implied K is 10; when f RA is 6, the corresponding implied K is 16; when f RA is 12, the corresponding implied K is 8. Therefore, only the value of the f RA needs to be notified, and the signaling overhead is reduced. And the value of f RA can also set a reasonable range of values to reduce the overhead of f RA .
  • f RA can be a collection, or it can be multiple separate values, and the operation is not affected.
  • the number of the starting PRB pair for each 6 consecutive PRB pairs (called a cluster) (number of the first PRB pair in the cluster for the PRB pair in the entire bandwidth). That is, the number of the starting PRB pair of the cluster (described by the PRB pair number of the entire bandwidth).
  • the following 36 random access PRB pairs can be obtained by using the above equation (which can also be a PRB, because the PRB is extended to the subframe boundary in the time domain to be a PRB pair, and the two numbers are the same and used in pairs).
  • Example 1 suppose that the system bandwidth is 20MHz, and the following PRB pair resources can be obtained by calculating the PRB allocation according to the corresponding 100 PRB pairs (the actual 20MHz system has 110 PRBs, numbered from 0 to 109), numbered from 0 to 99. .
  • the value of K is 16 (15, 17 is also possible, as long as the discrete PRB pairs in the carrier are not too large to meet the requirements in the regulation).
  • the assigned PRB pairs (numbers corresponding to the 20MHz bandwidth) are 4-9, 20-25, 36-41, 58-63, 74-79, 90 to 95. As shown in Figure 3, a total of 36 PRB pairs are allocated.
  • a PRB pair of 6 PRB pairs is used as the PRB pair resource of the existing uplink random access, and is used for the transmission of the uplink random access sequence.
  • the following provides a simple way to reduce the overhead of signaling.
  • the first PRB pair is selected from each cluster to form a random access PRB pair resource.
  • the first PRB pair is selected from each cluster to form a first group of random access PRB pair resources
  • the second PRB pair is selected from each cluster to form a second group random connection.
  • the first PRB pair is selected from each cluster to form a first group of random access PRB pair resources
  • the second PRB pair is selected from each cluster to form a second group random connection.
  • select the third PRB pair from each cluster to form the third group random access PRB pair resource When 4, 5, and 6 groups are supported in the sub-frame to access resources, the analogy is analogized.
  • the base station determines that a group of randomly accessed PRB pairs are required to be used for the UE random access sequence transmission in the randomly accessed subframe, and the base station notifies the UE by using high layer signaling or DCI, from the above six clusters.
  • the PRB pair resource of the uplink random access constituting the own cell or the local UE of the second PRB pair in each cluster is selected.
  • the PRB pair resource allocation for the random access of the LAA system is: using the above equation to determine 6 clusters of candidate PRB pairs for random access in the subframe; and then selecting one PRB pair from each cluster The resources of the randomly accessed PRB pair.
  • the nth PRB pair is selected in each cluster to form a group of random access resources, and the specific value of n can be notified to the UE by broadcast or point-to-point. n can be multiple values.
  • the point-to-point mode includes using (i) DCI information in the PDCCH to notify that the broadcast mode can also be notified by using (e) a common DCI in the PDCCH.
  • the subcarrier guard interval is reserved on both sides of the discrete PRB pair for each random access. Therefore, in this embodiment, more than 6 PRB pairs, for example, 7 PRB pairs, may be allocated, and then several subcarriers on both sides of each PRB pair are not used.
  • the random access resources can be better dispersed in the frequency domain, and the 80% bandwidth occupied by the signal transmitted by the device can be better satisfied.
  • K takes about 10 or so, for example, 10.
  • f RA is 0 to 9, which is the number of the cluster.
  • Example 1 suppose that the system bandwidth is 20MHz, and the following PRB pair resources can be obtained by calculating the PRB allocation according to the corresponding 100 PRB pairs (the actual 20MHz system has 110 PRBs, numbered from 0 to 109), numbered from 0 to 99. .
  • the value of K is 10 (11, 12 is also possible, as long as the discrete PRB pairs in the carrier are not too large to meet the requirements in the regulation).
  • the PRB pair assigned at this time is 2 to 7, 12 to 17, 22 to 27, 32 to 37, 42 to 47, 52 to 57, 62 to 67, 72 to 77, 82 to 87, and 92 to 97. As shown in Figure 4, a total of 60 PRB pairs are allocated.
  • the assigned PRB pairs are 2-7, 10-15, 20-25, 28-33, 36 to 41, 44 to 49, 52 to 57, 60 to 65, 68 to 73, 76 to 81, 84 to 89, and 92 to 97.
  • one PRB pair is selected from each cluster to form 10 PRB pairs as the existing uplink random access PRB pair resources for the uplink random access sequence transmission.
  • one PRB pair is selected from each cluster to form 10 PRB pairs as the existing uplink random access PRB pair resources for the uplink random access sequence transmission.
  • the first PRB pair is selected from each cluster to form a random access PRB pair resource.
  • the first PRB pair is selected from each cluster to form a first group of random access PRB pair resources
  • the second PRB pair is selected from each cluster to form a second group random connection.
  • the first PRB pair is selected from each cluster to form a first group of random access PRB pair resources
  • the second PRB pair is selected from each cluster to form a second group random connection.
  • select the third PRB pair from each cluster to form the third group random access PRB pair resource When 4, 5, and 6 groups are supported in the sub-frame to access resources, the analogy is analogized.
  • the base station determines that a group of randomly accessed PRB pairs are required to be used for the UE random access sequence transmission in the randomly accessed subframe, and the base station notifies the UE by using high layer signaling or DCI, from the above six clusters.
  • the PRB pair resource of the uplink random access constituting the own cell or the local UE of the second PRB pair in each cluster is selected.
  • the length of the random access sequence is increased, so that the occupied resources need to be 6 PRB pairs, and 10 PRB pairs are needed to carry the transmission.
  • Mode 2 using the existing random access sequence unchanged, such as the sequence of random access format 0 in the LTE system (may also include the CP, but the CP length can be adjusted according to the CCA position), but only from each group of 10 PRBs
  • the group selects 6 PRB pairs to perform random access sequence transmission, and the remaining 4 are filled with some arbitrary data transmission by the UE, or repeatedly selected data of the random access sequence in the first 4 PRB pairs of 6 PRB pairs. For example, select the first 6 PRB pairs (such as 0 to 5) with 10 index pairs in the 10 PRB pairs (assuming numbers 0 to 9) to perform random access sequence transmission, and then in the last 4 PRB pairs (such as 6 ⁇ 9) repeats the random access sequence transmission in the first 4 PRB pairs (such as 0-4).
  • a random set of PRB pairs is added to 12 PRBs, it can also be performed by adjusting the K value in a similar manner as described above.
  • the data of the PRB pair actually carrying the random access is partially or completely repeated for more than 6 PRB pairs.
  • Modify the subcarrier spacing when the existing random access sequence is transmitted for example, from the existing 1.25 KHz to 2.5 KHz, and then determine that each group of randomly accessed PRB pairs is 12.
  • the allocation of candidate PRB pairs still follows the above implementation 2, that is, 72 PRB pairs are generated as random access. It needs to be divided into 12 clusters to generate, and then select one PRB pair from each cluster to form 12 PRB pairs that are randomly accessed.
  • K needs to be adjusted to a range of values.
  • K takes about 8 or so, for example, 8.
  • the value of f RA is 0 to 11, which is the number of the cluster.
  • Example 1 suppose that the system bandwidth is 20MHz, and the following PRB pair resources can be obtained by calculating the PRB allocation according to the corresponding 100 PRB pairs (the actual 20MHz system has 110 PRBs, numbered from 0 to 109), numbered from 0 to 99. . K is 8.
  • the value is 2, when f RA is 0, 2, 4, 6, 8, 10, 11, 9, 7, 5, 3, 1, respectively, this time 2, 10, 18, 26, 34, 42, 52, 60, 68, 76, 84, 92, respectively, then the assigned PRB pairs are 2-7, 10-15, 18-23, 26-31, 34 to 39, 42 to 47, 52 to 57, 60 to 65, 68 to 73, 76 to 81, 84 to 89, and 92 to 97.
  • one PRB pair is selected from each cluster to form 12 PRB pairs as the existing uplink random access PRB pair resources for the uplink random access sequence transmission.
  • one PRB pair is selected from each cluster to form 12 PRB pairs as the existing uplink random access PRB pair resources for the uplink random access sequence transmission.
  • the following provides a simple way to reduce the overhead of signaling.
  • the first PRB pair is selected from each cluster to form a random access PRB pair resource.
  • the first PRB pair is selected from each cluster to form a first set of random access PRB pair resources, and each cluster is selected.
  • the second PRB pair is selected to form a second group of random access PRB pair resources.
  • the first PRB pair is selected from each cluster to form a first group of random access PRB pair resources, and the second PRB pair is selected from each cluster to form a second group random connection.
  • select the third PRB pair from each cluster to form the third group random access PRB pair resource When 4, 5, and 6 groups are supported in the sub-frame to access resources, the analogy is analogized.
  • the base station determines that a group of randomly accessed PRB pairs are required to be used for the UE random access sequence transmission in the randomly accessed subframe, and the base station notifies the UE through the high layer signaling or the DCI, from the above 12 clusters.
  • the PRB pair resource of the uplink random access constituting the own cell or the local UE of the second PRB pair in each cluster is selected.
  • the OFDM symbol duration becomes half of the original, and the original random access sequence is in time. Divided into two halves, the first half is mapped in the first 6 PRB pairs of the 12 PRB pairs (the 6 PRB pairs with the smaller number), and the second half is in the last 6 PRB pairs (the 6 PRB pairs with the larger number) Mapping.
  • the manner in which the PRB pair is allocated to the random access may be used to allocate a PRB pair resource for the PUSCH, PUCCH, or SRS for the UE.
  • a new resource allocation method is given as a PUSCH, a PUCCH, or an SRS or a random access resource.
  • the flexible PRB pair or frequency domain resource allocation is implemented in the equation by using the following parameters and some conventions.
  • the total number of resources for the uplink PRB is the total number of resources for the uplink PRB.
  • the range of values is The number of the frequency domain PRB pair in the system bandwidth may be a high layer signaling notification or notified by DCI.
  • K is a cluster of adjacent clusters (the cluster numbers are all odd or even, if the interval between the two clusters whose cluster number is even and the cluster number is odd may be K or not K) between the PRB pairs in the same position
  • the interval, calculated by the PRB pair can be obtained from the power spectral density of the signal in the carrier (for example, assuming that the entire bandwidth, the number of PRB pairs in the cluster are numbered sequentially from low frequency to high frequency. Number 3 and number 9
  • the number of intervals between PRB pairs is 6, and the actual interval of PRB pairs is 5 PRB pairs.
  • the K value can also be notified to the UE through DCI or higher layer signaling.
  • f RA indicates the number of clusters or the number of clusters. If the number of clusters is represented, the value is 0 to the maximum number minus 1. If the number of clusters is indicated, the total number of clusters is the number of clusters.
  • the K value can be implicitly given in the case given by f RA for the corresponding system bandwidth. For example, at 20 MHz, when f RA is 10, the corresponding implied K is 10; when f RA is 6, the corresponding implied K is 16; when f RA is 12, the corresponding implied K is 8. From only the value of f RA needs to be notified, and the signaling overhead is reduced. And the value of f RA can also set a reasonable range of values to reduce the overhead of f RA .
  • Y is the number of consecutive PRB pairs supported in each cluster. Each cluster is the same. If the number of PRB pairs supported in each cluster is a fixed value, or a value within a given range, the signaling overhead of Y can also be reduced. If fixed to a fixed value, the parameter can be solidified, and the parameter is no longer sent. Signaling of parameters.
  • the number of the starting PRB pair for each Y consecutive PRB pairs (called a cluster) (the number of PRB pairs in the entire PRB pair in the entire bandwidth).
  • T describing which PRB pair in each cluster is assigned.
  • the value is greater than or equal to 0 and less than or equal to Y-1.
  • each T value is calculated.
  • the obtained PR value (or set of values) corresponding to the PRB pair resource is a set of randomly accessed PRB pair resources.
  • the resource allocation in the embodiments of the present disclosure is applicable to all channels/signals in the unlicensed carrier.
  • Typical channels/signals include: PUSCH, PUCCH, SRS (referring to frequency domain location), uplink random access channel, and PDSCH can also be used.
  • the embodiments of the present disclosure further provide a PRB resource allocation apparatus in a carrier, where the apparatus includes:
  • the clustering unit is configured to divide the PRB resources into multiple clusters according to a predetermined clustering manner; wherein the number of PRB pairs included in each cluster is the same;
  • the PRB pair selection unit is configured to select one or more PRB pairs from each cluster as PRB pair resources for transmitting data.
  • the apparatus in the embodiment of the present disclosure may be disposed on a base station or may be disposed on a UE.
  • the clustering unit is configured to divide the PRB resources into a plurality of clusters according to a predetermined clustering manner; wherein the number of PRB pairs included in each cluster is the same;
  • the selection unit it is configured to select one or more PRB pairs from each cluster as PRB pair resources for receiving data.
  • the clustering unit is configured to divide the PRB resource into multiple clusters according to a predetermined clustering manner; wherein the number of PRB pairs included in each cluster is the same; PRB For the selection unit, it is configured to select one or more PRB pairs from each cluster as PRB pair resources for transmitting data.
  • the data includes one or more of uplink PRACH data, PUSCH data, PUCCH data, and SRS.
  • the clustering unit is further configured to:
  • the clustering unit includes a first initial PRB pair confirmation module configured to determine a number of a starting PRB pair of each cluster according to the following formula:
  • the total number of resources for the uplink PRB The total number of resources for the uplink PRB;
  • the PRB pair offset when assigning to the cluster The range of values is
  • K is the interval between PRB pairs at the same position in the cluster of adjacent clusters whose cluster numbers are both odd, or K is the interval between PRB pairs at the same position in the cluster of adjacent clusters whose even cluster numbers are even;
  • f RA represents the number of the cluster
  • the number of the starting PRB pair for the cluster is the number of the starting PRB pair for the cluster.
  • the clustering unit includes a second initial PRB pair confirmation module configured to determine a number of a starting PRB pair of each cluster according to the following formula:
  • the total number of resources for the uplink PRB The total number of resources for the uplink PRB;
  • the range of values is The PRB pair offset when assigning to the cluster
  • K is the interval between PRB pairs at the same position in the cluster of adjacent clusters whose cluster numbers are both odd, or K is the interval between PRB pairs at the same position in the cluster of adjacent clusters whose even cluster numbers are even;
  • f RA represents the number of the cluster
  • Y is the number of consecutive PRB pairs supported in each cluster.
  • the second initial PRB pair confirmation module is further configured to determine the allocated PRB pair according to the following manner:
  • T is used to describe which PRB pair in each cluster is assigned, and the value of T is greater than or equal to 0. And less than or equal to Y-1;
  • P describes which PRB pairs are assigned according to the PRB pair number of the system bandwidth.
  • the base station when the apparatus of the present disclosure is configured on the UE, the base station further includes a notification unit configured to notify one of the value of K or the value of f RA by signaling, so that the UE obtains according to the notification. Value and system bandwidth, determine the value of the other.
  • the apparatus on the UE side further includes: a receiving unit, configured to receive one of a value of K or a value of f RA that is signaled by the base station, so that the UE determines another according to the value of the notification and the system bandwidth. The value of one.
  • determining the value of the other according to the value of the notification and the system bandwidth includes:
  • the notification unit notifies the value of K or the value of f RA in one of the following manners:
  • the receiving unit receives one of the value of K notified by the base station through the DCI or the value of f RA ;
  • the RRC message of the broadcast type is sent, that is, the receiving unit receives the value of K or the value of f RA notified by the base station through the broadcast type RRC message.
  • K and/or f RA When K and/or f RA is used as a parameter of a cell or a carrier level, it is sent by a common DCI, that is, the receiving unit receives one of the value of K notified by the base station through the public DCI or the value of f RA ;
  • the UE-specific DCI transmission is used, that is, the receiving unit receives one of the value of K or the value of f RA notified by the base station using the UE-specific DCI notification;
  • DCI transmission corresponding to the PDCCH order is used, that is, the receiving unit receives the value of K or the f RA of the DCI notification corresponding to the base station using a specific PDCCH (such as PDCCH order).
  • a specific PDCCH such as PDCCH order.
  • the PRB pair selection unit includes:
  • a first selection module configured to select one PRB pair from each cluster as a PRB pair resource for transmitting data; wherein the first selection module selects one PRB pair from each cluster in one of the following manners:
  • the notification unit is further configured to notify the UE of the number of the selected PRB pair in the specific cluster by using an RRC message or a DCI; the DCI is a DCI corresponding to a specific PDCCH (such as a PDCCH order). That is, when the embodiment of the present disclosure is applied to the UE, the receiving unit receives the number of the selected PRB pair in the specific cluster notified by the base station through the RRC message or the DCI; the DCI is a specific PDCCH (such as a PDCCH order) Corresponding DCI.
  • the PRB pair selection unit includes:
  • a second selection module configured to select the same number of PRB pairs from each cluster as PRB pair resources for transmitting data; wherein selecting one PRB pair from each cluster is performed as follows:
  • the first i PRB pairs in each cluster are selected; where i is a positive integer.
  • the clustering unit is further configured to determine a value of K, wherein the clustering unit determines the value of K according to one of the following manners:
  • Mode 1 Select a K value that enables all clusters to be evenly distributed throughout the system bandwidth.
  • the selected K value is such that the clusters with the even number are evenly distributed, and the difference between the interval between the adjacent even clusters and the odd clusters is minimized; or, the selection is made to be odd.
  • the clusters are evenly distributed, and the difference between the interval between the adjacent even clusters and the odd clusters is minimized;
  • Mode 3 Select a K value that enables all clusters to be evenly distributed throughout the system bandwidth.
  • the K value is selected such that the number is even between the clusters. Uniformly distributed, and minimizes the difference between the interval between adjacent even and odd clusters and K; or, selects evenly distributed between clusters with odd numbers, and makes adjacent even clusters and odd numbers The difference between the intervals between the clusters and K is the smallest.
  • the transmission data is the uplink random access channel signal
  • 6 PRB pairs are selected from the allocated PRB pairs to carry the uplink random.
  • the method further includes: sending, for each group of random access allocated PRB pairs, the remaining PRB pairs, any padding data; or repeatedly sending the uplink random sequence and the corresponding CP, where the repetition includes all repetitions or partial repetitions .
  • the predetermined rule is: selecting the first six, or the last six, or the middle six of the PRB pair numbers of each group of uplink random access to send a complete uplink random access sequence. And the corresponding CP.
  • the notification unit is further configured to notify the UE of the value of the T, where T is one or more values, and T is a PRB pair number in the cluster. That is, when the apparatus of the embodiment of the present disclosure is applied to the UE, the receiving unit receives the value of the T notified by the base station, where T is one or more values, and T is a value of the PRB pair number in the cluster. .
  • each set of T value or T value is calculated by the P value corresponding to the PRB pair resource allocated to a UE or a data block TB allocated PRB pair resource.
  • the PRB pair resource corresponding to the P value obtained by each set of T value or T value is a set of randomly accessed PRB pair resources.
  • the clustering unit, the PRB pair selection unit, the first starting PRB pair confirmation module, the second starting PRB pair confirmation module, the first selection module, and the second selection module may be processed by a processor in the PRB resource allocation device in the carrier.
  • the notification unit and the receiving unit are implemented by a communication interface in a PRB resource allocation device in a carrier.
  • the embodiment of the present disclosure further provides a PRB resource allocation apparatus in a carrier, which is disposed on a UE, where the apparatus includes:
  • the clustering determining unit is configured to divide the PRB resources into a plurality of clusters according to a predetermined clustering manner; wherein the number of PRB pairs included in each cluster is the same;
  • the clustering determining unit is configured to select one or more PRB pairs from each cluster as PRB pair resources for transmitting data.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention can take the form of a hardware embodiment, a software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.
  • These computer program instructions can also be stored in a bootable computer or other programmable data processing
  • the apparatus is readable in a computer readable memory in a particular manner such that instructions stored in the computer readable memory produce an article of manufacture comprising instruction means implemented in one or more flows and/or block diagrams of the flowchart The function specified in the box or in multiple boxes.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.
  • an embodiment of the present disclosure further provides a computer storage medium, where the computer storage medium includes a set of instructions, when executed, causing at least one processor to execute a PRB resource in a carrier described in the embodiment of the present invention. Distribution method.
  • a plurality of clusters are divided into PRB resources according to a predetermined clustering manner; wherein, the number of PRB pairs included in each cluster is the same; and one or more PRBs are selected from each cluster.
  • a PRB pair resource as a transmission data.
  • a scheme for the random access of the unlicensed carrier and a resource allocation method are provided by the solution of the embodiment of the present disclosure, which can support the mapping of the existing random access sequence in the LTE system, for example, directly supporting the mapping of the format 0 and Sending, the existing resource allocation is improved to obtain discrete resources in the frequency domain to meet the requirements of regional control, and a PRB allocation is also provided, which can implement discrete resource allocation, thereby being applicable to unlicensed carriers.
  • the device's allocated resources and the signal energy on it account for more than 80% of the entire bandwidth and energy.

Abstract

本公开公开一种载波中PRB资源分配方法、装置和计算机存储介质,该方法包括:按照预定的分簇方式,将PRB资源中划分多个簇;其中,每个簇中包含的PRB对的数目相同;从每一簇中选择一个或多个PRB对作为传输数据的PRB对资源。

Description

一种载波中PRB资源分配方法、装置和计算机存储介质 技术领域
本公开涉及数据通信领域,尤指一种载波中物理资源块(PRB)资源分配方法、装置和计算机存储介质。
背景技术
目前,长期演进(LTE)技术的通信网络都是部署在授权载波中运营的,随着LTE的发展,一些公司提出了“建议研究LTE部署在非授权载波中的课题”,例如美国的高通公司认为:随着数据业务的快速增长,在不久的将来,授权载波将不能承受快速业务增长带来的巨大的数据量。考虑通过在非授权载波中部署LTE,以此来分担授权载波中的数据流量,可以解决业务增长带来的数据量压力。同时,非授权载波具有以下特点:一方面,由于非授权载波不需要购买,或者载波资源为零成本,因此非授权载波免费或低费用;另一方面,由于个人、企业都可以参与部署,设备商的设备也可以,因此非授权载波的准入要求低;再者,非授权载波具有共享性,通过多个不同系统都运营其中时或者同一系统的不同运营商运营其中时,可以考虑一些共享资源的方式,以提高载波效率。
综上所述,虽然LTE部署在非授权载波中具有明显的优势,但是,在部署的过程中,依然存在问题:其中,无线接入技术多(跨不同的通信标准,协作难,网络拓扑多样)和无线接入站点多(用户数量大,协作难度大,集中式管理开销大)。由于无线接入技术多,非授权载波中将存在各种各样的无线系统,彼此之间难于协调,干扰严重。因此,针对LTE部署在非授权载波中,仍然需要支持非授权载波的管制,多数国家要求系统在非授权载波中部署时,需要支持先听后说(Listen Before Talk,LBT)机制。通过LBT机制可以避免相邻系统之间同时使用非授权载波而为彼此带来的干扰。并且进一步引入竞争回退机制,即邻近的系统站点(一般是同一系 统的邻近传输节点),通过竞争回退机制后可以避免相同系统的邻近传输节点同时使用非授权载波时带来的干扰。并且,管制中规定,使用非授权载波的设备(包括基站和用户设备(UE))在发送之前都是需要进行LBT机制(即空闲信道评估(Clear Channel Assessment,CCA)),当信道空闲时,设备才能使用非授权载波信道进行数据发送。
非授权载波由于引入了LBT机制,那么现有的LTE系统中的随机接入设计就需要被修改以满足LTE系统运营在非授权载波中。
LTE中,上行随机接入的子帧由下面几部分组成。见图1,包括循环前缀(CP)和随机接入的序列(Tseq),在实际实现中随机接入的序列之后还存在一个保护间隔(GT,即信道保持空闲,执行随机接入的设备不发送信号)。也就是说,子帧中依次包括CP、Tseq和GT,三者之间之和为一个子帧的时长(1ms或30720个样点)。
UE通过随机接入过程(Random Access Procedure)与cell建立连接并取得上行同步。只有取得上行同步,UE才能进行上行传输。
随机接入的主要目的:1)获得上行同步;2)为UE分配一个唯一的标识-小区无线网络临时标识(C-RNTI)。
LTE系统中,一个子帧持续时长为1ms,在标准循环前缀时包括14个等长的OFDM符号(扩展CP时包括12个等长的OFDM符号)。在LTE系统资源分配以PRB对为单位进行,每个PRB在频域由12个子载波组成,在频域由7个符号组成,子帧内在时间连续的2个PRB为一个PRB对。
在LTE系统中用于上行随机接入序列发送的PRB分配为:
以20MHz带宽为例,如图1、图2示意的,是目前LTE系统的上行随机接入序列发送的PRB分配,特点是,一组上行随机接入的PRB资源由6个连续(频域)的PRB组成,例如图1示意的,且该6个PRB总是位于子帧的频域的两端。在LTE系统中,一个子帧中最多同时支持分配6组上行随机接入的PRB资源,并且分别位于频域的两端连续18个PRB中,如图2所示。基本的特点是:一组上行随机接入的PRB资源是连续的6个PRB,且位于频域两端的PRB中,系统带宽中间大量的PRB不被用于上行随机接入。
随机接入序列被映射到上述一组PRB中进行发送,例如系统在一个子帧中配置了一组随机接入的PRB资源,那么UE就在该组PRB资源中发送上行随机接入序列给基站。
但是,在非授权载波在一些国家或地区的管制存在对于名义带宽的占用要求。例如在欧洲对于5GHz频段的非授权载波,存在下面的要求,当设备使用非授权载波时至少带宽的80%,这样做的主要目的是,因为其他设备在执行先听后说的CCA能量检测时,能够较容易的发现非授权载波是否空闲。对于一个非授权载波,如果设备仅仅使用该载波的小部分带宽进行数据发送,那么会发生下面的问题:
1.发送数据的带宽太少,导致平均到整个载波中的信号能量低于预定的CCA能量检测门限,这样其他设备在CCA检测中,会发现载波时空闲的,从而使用该载波,这样两个设备同时使用非授权载波会造成彼此干扰。
2.设备发送数据的带宽集中位于载波频域的某一处,尤其是频域两端时,这样其他设备在进行非授权载波的CCA检测时,如果仅仅检测部分带宽例如检测的是占用设备未发送数据的10MHz的带宽,那么显然,所述其他设备就会发现信道空闲,从而占用设备如果再使用后一子帧且使用之前未发送数据的10MHz时,就会产生干扰。
显然,现有的LTE系统中随机接入的PRB不满足上述非授权载波的要求,那么要将LTE系统部署在非授权载波中,需要重新设计满足管制的要求。
公开内容
为了解决现有存在的技术问题,本公开实施例提出了一种载波中PRB资源分配方法、装置和计算机存储介质。
本公开实施例提出了一种载波中PRB资源分配方法,包括:
按照预定的分簇方式,将PRB资源中划分多个簇;其中,每个簇中包含的PRB对的数目相同;
从每一簇中选择一个或多个PRB对作为传输数据的PRB对资源。
上述方案中,所述数据包括上行物理随机接入信道(PRACH)数据、物理上行共享信道(PUSCH)数据、物理上行控制信道(PUCCH)数据、探测参考符号(SRS)中的一个或多个。
上述方案中,按照预定的分簇方式,将PRB资源中划分多个簇包括:
根据簇的数量和簇之间的间隔K,确定各个簇的起始PRB对的编号
Figure PCTCN2017077560-appb-000001
并将从起始PRB对开始的连续N1个PRB对划分为一个簇;其中,N1为每个簇中包含的PRB对的数目。
上述方案中,所述确定各个簇的起始PRB对的编号
Figure PCTCN2017077560-appb-000002
包括:
Figure PCTCN2017077560-appb-000003
其中,
Figure PCTCN2017077560-appb-000004
为上行PRB对资源总数;
Figure PCTCN2017077560-appb-000005
为簇分配时的PRB对偏移量,
Figure PCTCN2017077560-appb-000006
的取值范围为
Figure PCTCN2017077560-appb-000007
K为簇号均为奇数的相邻簇的簇内同一位置的PRB对之间的间隔,或K为簇号均为偶数的相邻簇的簇内同一位置的PRB对之间的间隔;
fRA表示簇的编号;
Figure PCTCN2017077560-appb-000008
为簇的起始PRB对的编号。
上述方案中,所述确定各个簇的起始PRB对的编号
Figure PCTCN2017077560-appb-000009
包括:
Figure PCTCN2017077560-appb-000010
其中,
Figure PCTCN2017077560-appb-000011
为上行PRB对资源总数;
Figure PCTCN2017077560-appb-000012
取值范围为
Figure PCTCN2017077560-appb-000013
为簇分配时的PRB对偏移量;
K为簇号均为奇数的相邻簇的簇内同一位置的PRB对之间的间隔,或K为簇号均为偶数的相邻簇的簇内同一位置的PRB对之间的间隔;
fRA表示簇的编号;
Figure PCTCN2017077560-appb-000014
为簇的起始PRB对的编号;
Y为每个簇中支持的连续的PRB对的数量。
上述方案中,
Figure PCTCN2017077560-appb-000015
其中,
T用于描述每个簇内哪个或哪些PRB对被分配,T的取值大于等于0且小于等于Y-1;
P按照系统带宽的PRB对编号描述哪些PRB对被分配
上述方案中,所述方法应用于UE时,接收基站通过信令通知的K的取值或fRA的取值中的一个,以使得UE根据通知的取值和系统带宽,确定另一个的取值。
上述方案中,所述根据通知的取值和系统带宽,确定另一个的取值包括:
在系统带宽为20MHz或系统按照100个PRB对执行资源分配的情况下:
当通知的fRA取值为10时,确定对应K取值为10;
当通知的fRA取值为6时,确定对应K取值为16;
当通知的fRA取值为12时,确定对应K取值为8;
当通知的K取值为10时,确定对应fRA取值为10;
当通知的K取值为16时,确定对应fRA取值为6;
当通知的K取值为8时,确定对应fRA取值为12。
上述方案中,接收基站通过信令通知的K的取值或fRA的取值中的一个按照如下方式中的一种执行:
接收基站通过下行控制信息(DCI)通知的K的取值或fRA的取值中的一个;
在K和/或fRA作为小区或载波级别的参数时,接收基站通过广播类型的无线资源控制(RRC)消息通知的K的取值或fRA的取值中的一个;
在K和/或fRA作为小区或载波级别的参数时,接收基站通过公共DCI 通知的K的取值或fRA的取值中的一个;
当K和/或fRA作为UE专用级别的参数时,接收基站使用UE专用的DCI通知的K的取值或fRA的取值中的一个;
当K和/或fRA作为UE专用级别的参数时,接收基站使用特定PDCCH对应的DCI通知的K的取值或fRA的取值中的一个。
上述方案中,所述从每一簇中选择一个或多个PRB对作为上行随机接入的PRB对资源包括:
从每个簇中选择一个PRB对作为发送数据的PRB对资源;其中从每个簇中选择一个PRB对按照如下方式中的一种进行:
选择每个簇中簇内编号相同的PRB对;
对于簇号为偶数的簇,选择簇内编号为N2的PRB对,对于簇号为奇数的簇,选择簇内编号为N3的PRB对,其中,N2和N3设置为相同或不同;
选择相邻间隔为一个簇的两个簇中簇内编号为相同的PRB对。
上述方案中,当所述方法应用于用户设备时,接收基站通过RRC消息或DCI信息通知的具体的簇内选择的PRB对的编号;所述DCI为特定PDCCH对应的DCI。
上述方案中,所述从每一簇中选择一个或多个PRB对作为发送数据的PRB对资源包括:
从每个簇中选择数目相同的PRB对作为发送数据的PRB对资源;其中从每个簇中选择一个PRB对按照如下方式进行:
当子帧中支持i组上行随机接入时,选择每个簇中前i个PRB对;其中i为正整数。
上述方案中,按照如下方式中的一种确定K的取值:
方式1、选择使得所有簇能够在整个系统带宽内均匀分布的K值。
方式2、选择的K值使得编号为偶数的簇之间均匀分布,且使得相邻的偶数簇和奇数簇之间的间隔与K之间的差值为最小;或,选择使得编号 为奇数的簇之间均匀分布,且使得相邻的偶数簇和奇数簇之间的间隔与K之间的差值为最小;
方式3、选择使得所有簇能够在整个系统带宽内均匀分布的K值,在不存在K值使得所有簇能够在整个系统带宽内均匀分布的情况下,选择K值使得编号为偶数的簇之间均匀分布,且使得相邻的偶数簇和奇数簇之间的间隔与K之间的差值为最小;或,选择使得编号为奇数的簇之间均匀分布,且使得相邻的偶数簇和奇数簇之间的间隔与K之间的差值为最小。
上述方案中,当发送数据为上行随机接入信道信号时,为每一组随机接入分配超过6个PRB对时,此时从分配的PRB对中,选择6个PRB对承载上行随机接入序列和对应的CP;其中,选择是通过事先约定的规则,或者由基站动态选择然后通过信令通知UE的方式选择6个PRB。
上述方案中,还包括,对于每一组随机接入分配的PRB对中,剩余的PRB对发送任意填充数据;或重复发送上行随机序列和对应CP,所述重复包括全部重复或部分重复。
上述方案中,所述事先预定的规则为:选择每一组上行随机接入的PRB对中编号的前6个、或后6个、或中间6个来发送完整的上行随机接入序列和对应的CP。
上述方案中,当所述方法应用于用户设备时,接收基站通知的所述T的取值,T为一个或多个取值,T取值为簇内的PRB对编号。
上述方案中,如果
Figure PCTCN2017077560-appb-000016
被使用为PRB对资源分配,每个T值或T值的集合计算获得的P值对应的PRB对资源为一个UE或一个数据块TB分配的PRB对资源。
上述方案中,如果
Figure PCTCN2017077560-appb-000017
被使用为上行随机接入PRB对资源分配,每个T值或T值的集合计算获得的P值对应的PRB对资源为一组随机接入的PRB对资源。
本公开实施例还提出了一种载波中PRB资源分配装置,所述装置包括:
分簇单元,配置为按照预定的分簇方式,将PRB资源中划分多个簇;其中,每个簇中包含的PRB对的数目相同;
PRB对选择单元,配置为从每一簇中选择一个或多个PRB对作为传输数据的PRB对资源。
上述方案中,所述分簇单元还配置为:
根据簇的数量和簇之间的间隔K,确定各个簇的起始PRB对的编号
Figure PCTCN2017077560-appb-000018
并将从起始PRB对开始的连续N1个PRB对划分为一个簇;其中,N1为每个簇中包含的PRB对的数目。
上述方案中,所述PRB对选择单元包括:
第一选择模块,配置为从每个簇中选择一个PRB对作为发送数据的PRB对资源;其中第一选择模块按照如下方式中的一种方式从每个簇中选择一个PRB对:
选择每个簇中簇内编号相同的PRB对;
对于簇号为偶数的簇,选择簇内编号为N2的PRB对,对于簇号为奇数的簇,选择簇内编号为N3的PRB对,其中,N2和N3设置为相同或不同;
选择相邻间隔为一个簇的两个簇中簇内编号为相同的PRB对。
上述方案中,所述通知单元还配置为通过RRC消息或DCI信息通知UE具体的簇内选择的PRB对的编号;所述DCI为特定PDCCH对应的DCI。
上述方案中,所述PRB对选择单元包括:
第二选择模块,配置为从每个簇中选择数目相同的PRB对作为发送数据的PRB对资源;其中从每个簇中选择一个PRB对按照如下方式进行:
当子帧中支持i组上行随机接入时,选择每个簇中前i个PRB对;其中i为正整数。
本公开实施例又提出了一种计算机存储介质,所述计算机存储介质包括一组指令,当执行所述指令时,引起至少一个处理器执行上述的载波中PRB资源分配方法。
本公开实施例提供的技术方案,按照预定的分簇方式,将PRB资源中划分多个簇;其中,每个簇中包含的PRB对的数目相同;从每一簇中选择一个或多个PRB对作为发送数据的PRB对资源。通过本公开实施例的方案, 提供了一种非授权载波的随机接入的波形和一种资源分配方法,可以支持LTE系统中现有随机接入序列的映射,例如直接支持格式0的映射和发送,对于现有资源分配进行了改进,从而获得在频域离散的资源,从而满足地区管制的要求,也提供的一种PRB的分配,能够实现离散的资源分配,从而适用于非授权载波,使得设备在分配的资源以及其上的信号能量占到整个带宽以及能量的80%以上的要求。
附图说明
下面对本公开实施例中的附图进行说明,实施例中的附图是用于对本公开的进一步理解,与说明书一起用于解释本公开,并不构成对本公开保护范围的限制。
图1为是现有LTE FDD模式上行随机接入的PRB对资源示意图;
图2是现有LTE TDD模式子帧中有6组上行随机接入的PRB对资源示意图;
图3是本公开实施例提供的子帧中分配6个簇的资源示意图;
图4是本公开实施例提供的子帧中分配10个簇的资源示意图。
具体实施方式
为了便于本领域技术人员的理解,下面结合附图对本公开实施例作进一步的描述,并不能用来限制本公开的保护范围。需要说明的是,在不冲突的情况下,本申请中的实施例及实施例中的各种方式可以相互组合。
本公开实施例提出了一种载波中PRB资源分配方法,包括:
按照预定的分簇方式,将PRB资源中划分多个簇;其中,每个簇中包含的PRB对的数目相同;
从每一簇中选择一个或多个PRB对作为传输数据的PRB对资源。
其中,实际应用时,本公开实施例的方法可以应用于基站和UE。
当本公开实施例的方法应用于基站时,基站按照预定的分簇方式,将PRB资源中划分多个簇;其中,每个簇中包含的PRB对的数目相同;从每 一簇中选择一个或多个PRB对作为接收数据的PRB对资源。
当本公开实施例的方法应用于UE时,UE按照预定的分簇方式,将PRB资源中划分多个簇;其中,每个簇中包含的PRB对的数目相同;从每一簇中选择一个或多个PRB对作为发送数据的PRB对资源。
本公开实施例中,所述数据包括上行PRACH数据、上行PUSCH数据、上行PUCCH数据、SRS中的一个或多个。
本公开实施例中,按照预定的分簇方式,将PRB资源中划分多个簇包括:
根据簇的数量和簇之间的间隔K,确定各个簇的起始PRB对的编号
Figure PCTCN2017077560-appb-000019
并将从起始PRB对开始的连续N1个PRB对划分为一个簇;其中,N1为每个簇中包含的PRB对的数目。
本公开实施例中,所述确定各个簇的起始PRB对的编号
Figure PCTCN2017077560-appb-000020
包括:
Figure PCTCN2017077560-appb-000021
其中,
Figure PCTCN2017077560-appb-000022
为上行PRB对资源总数;
Figure PCTCN2017077560-appb-000023
为簇分配时的PRB对偏移量,
Figure PCTCN2017077560-appb-000024
的取值范围为
Figure PCTCN2017077560-appb-000025
K为簇号均为奇数的相邻簇的簇内同一位置的PRB对之间的间隔,或K为簇号均为偶数的相邻簇的簇内同一位置的PRB对之间的间隔;
fRA表示簇的编号;
Figure PCTCN2017077560-appb-000026
为簇的起始PRB对的编号。
本公开实施例中,所述确定各个簇的起始PRB对的编号
Figure PCTCN2017077560-appb-000027
包括:
Figure PCTCN2017077560-appb-000028
其中,
Figure PCTCN2017077560-appb-000029
为上行PRB对资源总数;
Figure PCTCN2017077560-appb-000030
取值范围为
Figure PCTCN2017077560-appb-000031
为簇分配时的PRB对偏移量;
K为簇号均为奇数的相邻簇的簇内同一位置的PRB对之间的间隔,或K为簇号均为偶数的相邻簇的簇内同一位置的PRB对之间的间隔;
fRA表示簇的编号;
Figure PCTCN2017077560-appb-000032
为簇的起始PRB对的编号;
Y为每个簇中支持的连续的PRB对的数量。
本公开实施例中,还包括:
Figure PCTCN2017077560-appb-000033
其中,
T用于描述每个簇内哪个或哪些PRB对被分配,T的取值大于等于0且小于等于Y-1;
P按照系统带宽的PRB对编号描述哪些PRB对被分配。
本公开实施例中,基站通过信令通知K的取值或fRA的取值中的一个,以使得UE根据通知的取值和系统带宽,确定另一个的取值。也就是说,当本公开实施例的方法应用于UE时,UE接收基站通过信令通知的K的取值或fRA的取值中的一个,以使得UE根据通知的取值和系统带宽,确定另一个的取值。
本公开实施例中,所述根据通知的取值和系统带宽,确定另一个的取值包括:
在系统带宽为20MHz或系统按照100个PRB对执行资源分配的情况下:
当通知的fRA取值为10时,确定对应K取值为10;
当通知的fRA取值为6时,确定对应K取值为16;
当通知的fRA取值为12时,确定对应K取值为8;
当通知的K取值为10时,确定对应fRA取值为10;
当通知的K取值为16时,确定对应fRA取值为6;
当通知的K取值为8时,确定对应fRA取值为12。
本公开实施例中,所述通过信令通知K的取值或fRA的取值中的一个(UE接收基站通过信令通知的K的取值或fRA的取值中的一个)按照如下方式中的一种执行:
通过DCI来发送,即UE接收基站通过DCI通知的K的取值或fRA的取值中的一个;
在K和/或fRA作为小区或载波级别的参数时,通过广播类型的RRC消息发送,即UE接收基站通过广播类型的RRC消息通知的K的取值或fRA的取值中的一个;
在K和/或fRA作为小区或载波级别的参数时,通过公共DCI来发送,即UE接收基站通过公共DCI通知的K的取值或fRA的取值中的一个;
当K和/或fRA作为UE专用级别的参数时,使用UE专用的DCI发送,即UE接收基站使用UE专用的DCI通知的K的取值或fRA的取值中的一个;
当K和/或fRA作为UE专用级别的参数时,使用特定PDCCH(比如PDCCH order)对应的DCI发送,即UE接收基站使用特定PDCCH(比如PDCCH order)对应的DCI通知的K的取值或fRA的取值中的一个。
本公开实施例中,所述从每一簇中选择一个或多个PRB对作为上行随机接入的PRB对资源包括:
从每个簇中选择一个PRB对作为发送数据的PRB对资源;其中从每个簇中选择一个PRB对按照如下方式中的一种进行:
选择每个簇中簇内编号相同的PRB对;
对于簇号为偶数的簇,选择簇内编号为N2的PRB对,对于簇号为奇数的簇,选择簇内编号为N3的PRB对,其中,N2和N3设置为相同或不同;
选择相邻间隔为一个簇的两个簇中簇内编号为相同的PRB对。
本公开实施例中,基站通过RRC消息或DCI通知UE具体的簇内选择的PRB对的编号;所述DCI为特定PDCCH(比如PDCCH order)对应的DCI。也就是说,当本公开的实施例应用于UE时,接收基站通过RRC消 息或DCI通知的具体的簇内选择的PRB对的编号;所述DCI为特定PDCCH(比如PDCCH order)对应的DCI。
本公开实施例中,所述从每一簇中选择一个或多个PRB对作为发送数据的PRB对资源包括:
从每个簇中选择数目相同的PRB对作为发送数据的PRB对资源;其中从每个簇中选择一个PRB对按照如下方式进行:
当子帧中支持i组上行随机接入时,选择每个簇中前i个PRB对;其中i为正整数。
本公开实施例中,按照如下方式中的一种确定K的取值:
方式1、选择使得所有簇能够在整个系统带宽内均匀分布的K值。
方式2、选择的K值使得编号为偶数的簇之间均匀分布,且使得相邻的偶数簇和奇数簇之间的间隔与K之间的差值为最小;或,选择使得编号为奇数的簇之间均匀分布,且使得相邻的偶数簇和奇数簇之间的间隔与K之间的差值为最小;
方式3、选择使得所有簇能够在整个系统带宽内均匀分布的K值,在不存在K值使得所有簇能够在整个系统带宽内均匀分布的情况下,选择K值使得编号为偶数的簇之间均匀分布,且使得相邻的偶数簇和奇数簇之间的间隔与K之间的差值为最小;或,选择使得编号为奇数的簇之间均匀分布,且使得相邻的偶数簇和奇数簇之间的间隔与K之间的差值为最小。
本公开实施例中,当发送数据为上行随机接入信道信号时,为每一组随机接入分配超过6个PRB对时,此时从分配的PRB对中,选择6个PRB对承载上行随机接入序列和对应的CP;其中,选择是通过事先约定的规则,或者由基站动态选择然后通过信令通知UE的方式选择6个PRB。
本公开实施例中,还包括,对于每一组随机接入分配的PRB对中,剩余的PRB对发送任意填充数据;或重复发送上行随机序列和对应CP,所述重复包括全部重复或部分重复。
本公开实施例中,所述事先预定的规则为:选择每一组上行随机接入的PRB对中编号的前6个、或后6个、或中间6个来发送完整的上行随机 接入序列和对应的CP。
本公开实施例中,基站将所述T的取值通知给UE,T为一个或多个取值,T取值为簇内的PRB对编号。也就是说,当本公开实施例的方法应用于UE时,UE接收基站通知的所述T的取值,T为一个或多个取值,T取值为簇内的PRB对编号。
本公开实施例中,如果
Figure PCTCN2017077560-appb-000034
被使用为PRB对资源分配,每个T值或T值的集合计算获得的P值对应的PRB对资源为一个UE或一个数据块TB分配的PRB对资源。
本公开实施例中,如果
Figure PCTCN2017077560-appb-000035
被使用为上行随机接入PRB对资源分配,每个T值或T值的集合计算获得的P值对应的PRB对资源为一组随机接入的PRB对资源。
基于与上述实施例相同或相似的构思,本公开实施例还提供另一种载波中PRB资源确定方法,包括:
按照预定的分簇方式,将PRB资源中划分多个簇;其中,每个簇中包含的PRB对的数目相同;
从每一簇中选择一个或多个PRB对作为发送数据的PRB对资源。
本公开实施例中,UE按照上述实施例中相同或相似的方法将PRB资源中划分多个簇、以及按照上述实施例中相同或相似的方法从每一簇中选择一个或多个PRB对作为发送数据的PRB对资源,在此不再赘述。
下面结合具体的实施场景进行说明。
本公开实施例主要包括两方面内容,用于上行随机接入的资源分配和用于离散PRB资源的分配。
(1)用于上行随机接入的资源分配包括:
分别在实施例1、2、3中进行描述。包括:
方式1,对应实施例1,随机接入的资源仍然沿用6个PRB对的大小,此时通过下面的等式获得6个PRB对所在簇的具体频域位置,然后在从每个簇中选一个PRB对构成随机接入的资源。
Figure PCTCN2017077560-appb-000036
方式2,对应实施例2,为了更好的占用且信号能量集中在80%带宽的要求,为随机接入需要分配更多的资源,且离散的间隔较小一些。在方式1的基础上,增加更多的簇达到分配更多的PRB的目的,然后对于更多的PRB对采用重复映射的方法。
方式3,对应实施例3,通过增加现有随机接入发送时的子载波间隔,例如间隔从1.25KHz增加到2.5KHz后,序列映射以及资源分配。
(2)用于离散PRB资源分配的方法
给出新的资源分配方法为PUSCH、PUCCH或SRS或随机接入资源。等式中通过使用下面的参数和一些约定规则来实现灵活的PRB对或频域资源分配。
Figure PCTCN2017077560-appb-000037
Figure PCTCN2017077560-appb-000038
其中,
Figure PCTCN2017077560-appb-000039
为上行PRB对资源总数。
Figure PCTCN2017077560-appb-000040
取值范围为
Figure PCTCN2017077560-appb-000041
为系统带宽中频域PRB对的编号,可以是高层信令通知或者通过DCI进行通知的。
K为相邻簇的簇(簇号均为奇数或偶数,如果是簇号为偶数与簇号为奇数的两个簇的间隔可以为K也可以不为K)内同一位置的PRB对之间的间隔,按PRB对计算,可以根据载波中的信号的功率谱密度获得(例如假设整个带宽、簇内的PRB对编号都是从低频到高频依次编号的。编号为3和编号为9的PRB对之间间隔的数量是6,实际间隔的PRB对为5个PRB对),K值也可以通过DCI或高层信令通知给UE。
fRA表示簇的数量或簇的编号,如果表示簇的数量,则取值为0~最大数 量减1,如果表示簇的编号,则总的编号个数为簇的数量。为了简化和减少信令开销,可以针对对应的系统带宽,在fRA给定的情况,暗含给出K值。例如,20MHz时,fRA为10时,对应暗含K取值为10;fRA为6时,对应暗含K取值为16;fRA为12时,对应暗含K取值为8。从只需要通知fRA的取值,而减少信令开销。并且fRA的取值也可以设置合理的取值范围,以减少fRA的开销。
Y为每个簇中支持的连续的PRB对的数量。每个簇都是相同的。如果每个簇内支持的PRB对数量为定值,或者为给定范围内的取值,也是可以减少Y的信令开销的,如果固定为定值,则可以固化该参数,不再发送该参数的信令。
Figure PCTCN2017077560-appb-000042
为每Y个连续的PRB对(称为一个簇)的起始PRB对的编号(簇内第一个PRB对在整个带宽中的PRB对的编号)。
T,描述每个簇内那个或那些PRB对被分配了。取值大于等于0且小于等于Y-1。T由基站通知给UE,可以是多个取值,例如T={0、1}时,那么每一个簇中编号为0和1的PRB对被分配。例如T=2时,那么每一个簇中编号为2的PRB对被分配。
P,按照系统带宽的PRB对编号描述那些PRB对被分配。
如果上述方式用于载波中PRB对资源分配,优选地,每个T值计算获得的P值(或值的集合)对应的PRB对资源为一组随机接入的PRB对资源。
下面结合具体的实施例进行说明。
实施例1
当子帧中分配6组随机接入的PRB资源时,每组使用6个PRB对,那么需要36个PRB对,采用下面的方式进行PRB资源的分配。
36个PRB对的分配采用下面的等式进行:
Figure PCTCN2017077560-appb-000043
其中,
Figure PCTCN2017077560-appb-000044
为上行PRB对资源总数。
Figure PCTCN2017077560-appb-000045
取值范围为
Figure PCTCN2017077560-appb-000046
为系统带宽中频域PRB对的编号,可以是高层信令通知或者通过DCI进行通知的。
K为相邻簇的簇(簇号均为奇数或偶数,如果是簇号为偶数与簇号为奇数的两个簇的间隔可以为K也可以不为K)内同一位置的PRB对之间的间隔,按PRB对计算,可以根据载波中的信号的功率谱密度获得(例如假设整个带宽、簇内的PRB对编号都是从低频到高频依次编号的。编号为3和编号为9的PRB对之间间隔的数量是6,实际间隔的PRB对为5个PRB对),K值也可以通过DCI或高层信令通知给UE。
fRA表示簇的数量或簇的编号,如果表示簇的数量,则取值为0~最大数量减1,如果表示簇的编号,则总的编号个数为簇的数量。为了简化和减少信令开销,可以针对对应的系统带宽,在fRA给定的情况,暗含给出K值。例如,20MHz时,fRA为10时,对应暗含K取值为10;fRA为6时,对应暗含K取值为16;fRA为12时,对应暗含K取值为8。从而只需要通知fRA的取值,减少信令开销。并且fRA的取值也可以设置合理的取值范围,以减少fRA的开销。fRA可以是一个集合,也可以是多个单独的取值,操作不受影响。
Figure PCTCN2017077560-appb-000047
为每6个连续的PRB对(称为一个簇)的起始PRB对的编号(簇内第一个PRB对在整个带宽中的PRB对的编号)。即簇的起始PRB对的编号(按照整个带宽的PRB对编号描述)。
采用上述等式可以获得下面的36个随机接入的PRB对(也可以是PRB,因为PRB在时域延长至子帧边界就是PRB对,两者编号相同,成对使用)。
例子1,假设,系统带宽为20MHz,计算PRB分配时按照对应100个PRB对(实际20MHz的系统有110个PRB,编号从0~109),编号为0~99,可以获得下面的PRB对资源。K取值为16(15、17也是可以的,只要使得载波中离散的PRB对不要间隔过大以至于不满足管制中的要求即可)。
Figure PCTCN2017077560-appb-000048
取值为4时,当fRA取值分别为0、2、4、5、3、1时,此时
Figure PCTCN2017077560-appb-000049
分别为4、20、36、58、74、90,那么此时分配的PRB对(按照20MHz带宽对 应的编号)为4~9、20~25、36~41、58~63、74~79、90~95。如图3所示,总计分配了36个PRB对。
然后再从每一个簇中选择一个货多个PRB(下面以一个为例)对组成6个PRB对作为现有的上行随机接入的PRB对资源,用于上行随机接入序列的发送。具体地,如何从每一个簇中选择一个PRB对组成一组上行随机接入的PRB对资源呢?下面提供一种简单的方式,这种方式有利于降低信令的开销。
方式1,对于子帧中只支持一组随机接入资源时,从每簇中选择第一个PRB对组成随机接入PRB对资源。对于子帧中支持2组随机接入资源时,从每簇中选择第一个PRB对组成第一组随机接入PRB对资源,从每簇中选择第2个PRB对组成第2组随机接入PRB对资源。对于子帧中支持3组随机接入资源时,从每簇中选择第1个PRB对组成第1组随机接入PRB对资源,从每簇中选择第2个PRB对组成第2组随机接入PRB对资源,从每簇中选择第3个PRB对组成第3组随机接入PRB对资源。子帧中支持4、5、6组随街接入资源时,依次类推。
方式2,为了避免邻近小区的随机接入PRB对资源相同在同一子帧带来的干扰,下面建议通知(例如高层信令或DCI来通知)每个小区中的随机接入的PRB对从簇中选择的顺序。例如,基站确定在随机接入的子帧中需要1组随机接入的PRB对资源用于UE随机接入序列发送,此时基站通过高层信令或DCI通知UE,从上述的6个簇中选择每个簇中第2个PRB对组成本小区或本UE的上行随机接入的PRB对资源。
所以,对于LAA系统的随机接入的PRB对资源分配为:采用上述等式来确定子帧中候选的用于随机接入的PRB对的6个簇;然后从每簇中选择一个PRB对组成随机接入的PRB对的资源。
每个簇中选取第n个PRB对组成一组随机接入资源,具体的n值可以通过广播方式或点到点方式通知给UE。n可以是多个取值。点到点方式包括使用(e)PDCCH中的DCI信息来通知,广播方式也可以采用(e)PDCCH中公共的DCI来通知。
考虑到在离散的每个随机接入的PRB对两侧预留子载波保护间隔,那 么意味着需要分配多于6个PRB对才能承载现有的6个连续的PRB对中的随机接入序列。所以本实施例中,也可以通过分配多于6个PRB对,例如7个PRB对,然后每个PRB对中两侧的若干个子载波不使用。
实施例2
增加子帧中每一组随机接入的PRB对的数量,例如从原有的6个增加到10个。这样可以使得随机接入资源在频域更好的离散,更好的满足设备发送信号的占用80%的带宽。
此时仍然沿用上述的PRB对资源分配的思路,但是需要做一些改进。此时的K值需要被调整取值范围,例如K取值大约为10个左右,例如10。此时需要分配10个簇时,fRA取值为0~9,为簇的编号。
Figure PCTCN2017077560-appb-000050
例子1,假设,系统带宽为20MHz,计算PRB分配时按照对应100个PRB对(实际20MHz的系统有110个PRB,编号从0~109),编号为0~99,可以获得下面的PRB对资源。K取值为10(11、12也是可以的,只要使得载波中离散的PRB对不要间隔过大以至于不满足管制中的要求即可)。
Figure PCTCN2017077560-appb-000051
取值为2时,当fRA取值分别为0、2、4、6、8、9、7、5、3、1时,此时
Figure PCTCN2017077560-appb-000052
分别为2、12、22、32、42、52、62、72、82、92,那么此时分配的PRB对为2~7、12~17、22~27、32~37、42~47、52~57、62~67、72~77、82~87、92~97。如图4所示,总计分配了60个PRB对。
分配12个簇的情况如下:
Figure PCTCN2017077560-appb-000053
取值为2时,此时间隔K为8,当fRA取值分别为0、2、4、6、8、10、11、9、7、5、3、1时,此时
Figure PCTCN2017077560-appb-000054
分别为2、10、20、28、36、44、52、60、68、76、84、92,那么此时分配的PRB对为2~7、10~15、20~25、28~33、36~41、44~49、52~57、60~65、68~73、76~81、84~89、92~97。
然后再从每一个簇中选择一个PRB对组成10个PRB对作为现有的上行随机接入的PRB对资源,用于上行随机接入序列的发送。具体地,如何从每一个簇中选择一个PRB对组成一组上行随机接入的PRB对资源呢?下 面提供一种简单的方式,这种方式有利于降低信令的开销。
方式1,对于子帧中只支持一组随机接入资源时,从每簇中选择第一个PRB对组成随机接入PRB对资源。对于子帧中支持2组随机接入资源时,从每簇中选择第一个PRB对组成第一组随机接入PRB对资源,从每簇中选择第2个PRB对组成第2组随机接入PRB对资源。对于子帧中支持3组随机接入资源时,从每簇中选择第1个PRB对组成第1组随机接入PRB对资源,从每簇中选择第2个PRB对组成第2组随机接入PRB对资源,从每簇中选择第3个PRB对组成第3组随机接入PRB对资源。子帧中支持4、5、6组随街接入资源时,依次类推。
方式2,为了避免邻近小区的随机接入PRB对资源相同在同一子帧带来的干扰,下面建议通知(例如高层信令或DCI来通知)每个小区中的随机接入的PRB对从簇中选择的顺序。例如,基站确定在随机接入的子帧中需要1组随机接入的PRB对资源用于UE随机接入序列发送,此时基站通过高层信令或DCI通知UE,从上述的6个簇中选择每个簇中第2个PRB对组成本小区或本UE的上行随机接入的PRB对资源。
对于每一组随机接入的资源,如何映射随机接入序列呢?有以下几种做法:
方式1,增加随机接入序列的长度,使得占用的资源从需要6个PRB对,增加到需要10个PRB对来承载发送。
方式2,使用现有的随机接入序列不变,例如LTE系统中随机接入格式0的序列(也可以包括CP,只是CP长度可以根据CCA位置而调整),但是仅仅从每组10个PRB组选择6个PRB对进行随机接入的序列发送,其余的4个由UE填充一些任意数据发送,或者重复选择的随机接入序列在6个PRB对中的前4个PRB对中的数据。例如,选择10个PRB对(假设编号为0~9)中的索引值较小的前6个PRB对(如0~5)进行随机接入序列的发送,然后在后4个PRB对(如6~9)中重复前4个PRB对(如0~4)中的随机接入序列发送。
如何从10个PRB对中选6个PRB对,具体有多种方式,例如选择前6个,或后6个,中间6个等,也可以通过信令动态通知UE,例如高层RRC 消息,或物理层的DCI信令能被使用。
如果增加一组随机接入的PRB对至12个PRB,也可以通过调整K值,采用上述类似的方式进行。对于多于6个PRB对采用部分重复或全部重复实际承载随机接入的PRB对的数据。
实施例3
修改现有随机接入的序列发送时的子载波间隔,例如从现有的1.25KHz修改为2.5KHz,然后确定每一组随机接入的PRB对为12个。
候选PRB对的分配仍然沿用上述实施2中,即产生72个PRB对为随机接入。需要分为12个簇来产生,然后从每一簇内选一个PRB对组成随机接入的12个PRB对。
此时的K值需要被调整取值范围,例如K取值大约为8个左右,例如8。此时需要分配12个簇时,fRA取值为0~11,为簇的编号。
Figure PCTCN2017077560-appb-000055
例子1,假设,系统带宽为20MHz,计算PRB分配时按照对应100个PRB对(实际20MHz的系统有110个PRB,编号从0~109),编号为0~99,可以获得下面的PRB对资源。K取值为8。
Figure PCTCN2017077560-appb-000056
取值为2时,当fRA取值分别为0、2、4、6、8、10、11、9、7、5、3、1时,此时
Figure PCTCN2017077560-appb-000057
分别为2、10、18、26、34、42、52、60、68、76、84、92,那么此时分配的PRB对为2~7、10~15、18~23、26~31、34~39、42~47、52~57、60~65、68~73、76~81、84~89、92~97。
然后再从每一个簇中选择一个PRB对组成12个PRB对作为现有的上行随机接入的PRB对资源,用于上行随机接入序列的发送。具体地,如何从每一个簇中选择一个PRB对组成一组上行随机接入的PRB对资源呢?下面提供一种简单的方式,这种方式有利于降低信令的开销。
方式1,对于子帧中只支持一组随机接入资源时,从每簇中选择第一个PRB对组成随机接入PRB对资源。对于子帧中支持2组随机接入资源时,从每簇中选择第一个PRB对组成第一组随机接入PRB对资源,从每簇中选 择第2个PRB对组成第2组随机接入PRB对资源。对于子帧中支持3组随机接入资源时,从每簇中选择第1个PRB对组成第1组随机接入PRB对资源,从每簇中选择第2个PRB对组成第2组随机接入PRB对资源,从每簇中选择第3个PRB对组成第3组随机接入PRB对资源。子帧中支持4、5、6组随街接入资源时,依次类推。
方式2,为了避免邻近小区的随机接入PRB对资源相同在同一子帧带来的干扰,下面建议通知(例如高层信令或DCI来通知)每个小区中的随机接入的PRB对从簇中选择的顺序。例如,基站确定在随机接入的子帧中需要1组随机接入的PRB对资源用于UE随机接入序列发送,此时基站通过高层信令或DCI通知UE,从上述的12个簇中选择每个簇中第2个PRB对组成本小区或本UE的上行随机接入的PRB对资源。
在随机接入的12个PRB对后,随机接入序列如何映射发送呢?下面提供一种方式。
确定了每一组随机接入的PRB对资源后,由于子载波间隔从原来的1.25KHz调整为2.5KHz,所以OFDM符号时长变为原来的一半,此时将原来的随机接入序列在时间上分为两半,前半在12个PRB对中的前6个PRB对(编号较小的6个PRB对)中映射,后半在后6个PRB对(编号较大的6个PRB对)中映射。
实施例4
本申请给随机接入分配PRB对的方式(实施例1、2、3中)可以被使用为UE分配用于PUSCH、PUCCH或SRS的PRB对资源。
本实施例中,给出新的资源分配方法为PUSCH、PUCCH或SRS或随机接入资源。等式中通过使用下面的参数和一些约定规则来实现灵活的PRB对或频域资源分配。
Figure PCTCN2017077560-appb-000058
Figure PCTCN2017077560-appb-000059
其中,
Figure PCTCN2017077560-appb-000060
为上行PRB对资源总数。
Figure PCTCN2017077560-appb-000061
取值范围为
Figure PCTCN2017077560-appb-000062
为系统带宽中频域PRB对的编号,可以是高层信令通知或者通过DCI进行通知的。
K为相邻簇的簇(簇号均为奇数或偶数,如果是簇号为偶数与簇号为奇数的两个簇的间隔可以为K也可以不为K)内同一位置的PRB对之间的间隔,按PRB对计算,可以根据载波中的信号的功率谱密度获得(例如假设整个带宽、簇内的PRB对编号都是从低频到高频依次编号的。编号为3和编号为9的PRB对之间间隔的数量是6,实际间隔的PRB对为5个PRB对),K值也可以通过DCI或高层信令通知给UE。
fRA表示簇的数量或簇的编号,如果表示簇的数量,则取值为0~最大数量减1,如果表示簇的编号,则总的编号个数为簇的数量。为了简化和减少信令开销,可以针对对应的系统带宽,在fRA给定的情况,暗含给出K值。例如,20MHz时,fRA为10时,对应暗含K取值为10;fRA为6时,对应暗含K取值为16;fRA为12时,对应暗含K取值为8。从只需要通知fRA的取值,而减少信令开销。并且fRA的取值也可以设置合理的取值范围,以减少fRA的开销。
Y为每个簇中支持的连续的PRB对的数量。每个簇都是相同的。如果每个簇内支持的PRB对数量为定值,或者为给定范围内的取值,也是可以减少Y的信令开销的,如果固定为定值,则可以固化该参数,不再发送该参数的信令。
Figure PCTCN2017077560-appb-000063
为每Y个连续的PRB对(称为一个簇)的起始PRB对的编号(簇内第一个PRB对在整个带宽中的PRB对的编号)。
T,描述每个簇内那个PRB对被分配了。取值大于等于0且小于等于Y-1。T由基站通知给UE,可以是多个取值,例如T={0、1}时,那么每一个簇中编号为0和1的PRB对被分配。例如T=2时,那么每一个簇中编号为2的PRB对被分配。
P,按照系统带宽的PRB对编号描述那些PRB对被分配。
如果上述方式用于随机接入PRB对资源分配,优选地,每个T值计算 获得的P值(或值的集合)对应的PRB对资源为一组随机接入的PRB对资源。
本公开实施例中的资源分配适用于非授权载波中的所有信道/信号,典型的信道/信号包括:PUSCH、PUCCH、SRS(指频域位置),上行随机接入信道,PDSCH也可以使用。
基于与上述实施例相同或相似的构思,本公开实施例还提供一种载波中PRB资源分配装置,所述装置包括:
分簇单元,配置为按照预定的分簇方式,将PRB资源中划分多个簇;其中,每个簇中包含的PRB对的数目相同;
PRB对选择单元,配置为从每一簇中选择一个或多个PRB对作为传输数据的PRB对资源。
实际应用时,本公开实施例的装置可以设置在基站上,也可以设置在UE上。
当本公开实施例的装置设置在基站上时,分簇单元,配置为按照预定的分簇方式,将PRB资源中划分多个簇;其中,每个簇中包含的PRB对的数目相同;PRB对选择单元,配置为从每一簇中选择一个或多个PRB对作为接收数据的PRB对资源。
当本公开实施例的装置设置在UE上时,分簇单元,配置为按照预定的分簇方式,将PRB资源中划分多个簇;其中,每个簇中包含的PRB对的数目相同;PRB对选择单元,配置为从每一簇中选择一个或多个PRB对作为发送数据的PRB对资源。
本公开实施例中,所述数据包括上行PRACH数据、PUSCH数据、PUCCH数据、SRS中的一个或多个。
本公开实施例中,所述分簇单元还配置为:
根据簇的数量和簇之间的间隔K,确定各个簇的起始PRB对的编号,并将从起始PRB对开始的连续N1个PRB对划分为一个簇;其中,N1为每个簇中包含的PRB对的数目。
本公开实施例中,所述分簇单元包括第一起始PRB对确认模块,配置 为根据如下公式确定各个簇的起始PRB对的编号
Figure PCTCN2017077560-appb-000064
Figure PCTCN2017077560-appb-000065
其中,
Figure PCTCN2017077560-appb-000066
为上行PRB对资源总数;
Figure PCTCN2017077560-appb-000067
为簇分配时的PRB对偏移量,
Figure PCTCN2017077560-appb-000068
的取值范围为;
K为簇号均为奇数的相邻簇的簇内同一位置的PRB对之间的间隔,或K为簇号均为偶数的相邻簇的簇内同一位置的PRB对之间的间隔;
fRA表示簇的编号;
Figure PCTCN2017077560-appb-000069
为簇的起始PRB对的编号。
本公开实施例中,所述分簇单元包括第二起始PRB对确认模块,配置为根据如下公式确定各个簇的起始PRB对的编号
Figure PCTCN2017077560-appb-000070
Figure PCTCN2017077560-appb-000071
其中,
Figure PCTCN2017077560-appb-000072
为上行PRB对资源总数;
Figure PCTCN2017077560-appb-000073
取值范围为
Figure PCTCN2017077560-appb-000074
为簇分配时的PRB对偏移量;
K为簇号均为奇数的相邻簇的簇内同一位置的PRB对之间的间隔,或K为簇号均为偶数的相邻簇的簇内同一位置的PRB对之间的间隔;
fRA表示簇的编号;
Figure PCTCN2017077560-appb-000075
为簇的起始PRB对的编号;
Y为每个簇中支持的连续的PRB对的数量。
本公开实施例中,所述第二起始PRB对确认模块还配置为根据如下方式确定分配的PRB对:
Figure PCTCN2017077560-appb-000076
其中,
T用于描述每个簇内哪个或哪些PRB对被分配,T的取值大于等于0 且小于等于Y-1;
P按照系统带宽的PRB对编号描述哪些PRB对被分配
本公开实施例中,当本公开的装置设置在UE上时,基站还包括通知单元,配置为通过信令通知K的取值或fRA的取值中的一个,以使得UE根据通知的取值和系统带宽,确定另一个的取值。相应地,UE侧的装置还包括:接收单元,用于接收基站通过信令通知的K的取值或fRA的取值中的一个,以使得UE根据通知的取值和系统带宽,确定另一个的取值。
本公开实施例中,所述根据通知的取值和系统带宽,确定另一个的取值包括:
在系统带宽为20MHz或系统按照100个PRB对执行资源分配的情况下:
当通知的fRA取值为10时,确定对应K取值为10;
当通知的fRA取值为6时,确定对应K取值为16;
当通知的fRA取值为12时,确定对应K取值为8;
当通知的K取值为10时,确定对应fRA取值为10;
当通知的K取值为16时,确定对应fRA取值为6;
当通知的K取值为8时,确定对应fRA取值为12。
本公开实施例中,所述通知单元按照如下方式中的一种通知K的取值或fRA的取值:
通过DCI来发送,即所述接收单元接收基站通过DCI通知的K的取值或fRA的取值中的一个;
在K和/或fRA作为小区或载波级别的参数时,通过广播类型的RRC消息发送,即所述接收单元接收基站通过广播类型的RRC消息通知的K的取值或fRA的取值中的一个;
在K和/或fRA作为小区或载波级别的参数时,通过公共DCI来发送,即所述接收单元接收基站通过公共DCI通知的K的取值或fRA的取值中的 一个;
当K和/或fRA作为UE专用级别的参数时,使用UE专用的DCI发送,即所述接收单元接收基站使用UE专用的DCI通知的K的取值或fRA的取值中的一个;
当K和/或fRA作为UE专用级别的参数时,使用PDCCH order对应的DCI发送,即所述接收单元接收基站使用特定PDCCH(比如PDCCH order)对应的DCI通知的K的取值或fRA的取值中的一个。
本公开实施例中,所述PRB对选择单元包括:
第一选择模块,配置为从每个簇中选择一个PRB对作为发送数据的PRB对资源;其中第一选择模块按照如下方式中的一种方式从每个簇中选择一个PRB对:
选择每个簇中簇内编号相同的PRB对;
对于簇号为偶数的簇,选择簇内编号为N2的PRB对,对于簇号为奇数的簇,选择簇内编号为N3的PRB对,其中,N2和N3设置为相同或不同;
选择相邻间隔为一个簇的两个簇中簇内编号为相同的PRB对。
本公开实施例中,所述通知单元还配置为通过RRC消息或DCI通知UE具体的簇内选择的PRB对的编号;所述DCI为特定PDCCH(比如PDCCH order)对应的DCI。也就是说,当本公开的实施例应用于UE时,所述接收单元接收基站通过RRC消息或DCI通知的具体的簇内选择的PRB对的编号;所述DCI为特定PDCCH(比如PDCCH order)对应的DCI。
本公开实施例中,所述PRB对选择单元包括:
第二选择模块,配置为从每个簇中选择数目相同的PRB对作为发送数据的PRB对资源;其中从每个簇中选择一个PRB对按照如下方式进行:
当子帧中支持i组上行随机接入时,选择每个簇中前i个PRB对;其中i为正整数。
本公开实施例中,所述分簇单元还配置为确定K的值,其中,所述分簇单元按照如下方式中的一种确定K的取值:
方式1、选择使得所有簇能够在整个系统带宽内均匀分布的K值。
方式2、选择的K值使得编号为偶数的簇之间均匀分布,且使得相邻的偶数簇和奇数簇之间的间隔与K之间的差值为最小;或,选择使得编号为奇数的簇之间均匀分布,且使得相邻的偶数簇和奇数簇之间的间隔与K之间的差值为最小;
方式3、选择使得所有簇能够在整个系统带宽内均匀分布的K值,在不存在K值使得所有簇能够在整个系统带宽内均匀分布的情况下,选择K值使得编号为偶数的簇之间均匀分布,且使得相邻的偶数簇和奇数簇之间的间隔与K之间的差值为最小;或,选择使得编号为奇数的簇之间均匀分布,且使得相邻的偶数簇和奇数簇之间的间隔与K之间的差值为最小。
本公开实施例中,当发送数据为上行随机接入信道信号时,为每一组随机接入分配超过6个PRB对时,此时从分配的PRB对中,选择6个PRB对承载上行随机接入序列和对应的CP;其中,选择是通过事先约定的规则,或者由基站动态选择然后通过信令通知UE的方式选择6个PRB。
本公开实施例中,还包括,对于每一组随机接入分配的PRB对中,剩余的PRB对发送任意填充数据;或重复发送上行随机序列和对应CP,所述重复包括全部重复或部分重复。
本公开实施例中,所述事先预定的规则为:选择每一组上行随机接入的PRB对中编号的前6个、或后6个、或中间6个来发送完整的上行随机接入序列和对应的CP。
本公开实施例中,所述通知单元还配置为将所述T的取值通知给UE,T为一个或多个取值,T取值为簇内的PRB对编号。也就是说,当本公开实施例的装置应用于UE时,所述接收单元接收基站通知的所述T的取值,T为一个或多个取值,T取值为簇内的PRB对编号。
本公开实施例中,
如果
Figure PCTCN2017077560-appb-000077
被使用为PRB对资源分配,每个T值或T值的集合计算获得的P值对应的PRB对资源为一个UE或一个数据块TB分配的PRB对资源。
本公开实施例中,
如果
Figure PCTCN2017077560-appb-000078
被使用为上行随机接入PRB对资源分配,每个T值或T值的集合计算获得的P值对应的PRB对资源为一组随机接入的PRB对资源。
实际应用时,分簇单元、PRB对选择单元、第一起始PRB对确认模块、第二起始PRB对确认模块、第一选择模块、第二选择模块可由载波中PRB资源分配装置中的处理器实现;所述通知单元、接收单元可由载波中PRB资源分配装置中的通信接口实现。
基于与上述实施例相同或相似的构思,本公开实施例还提供一种载波中PRB资源分配装置,设置在UE上,所述装置包括:
分簇确定单元,配置为按照预定的分簇方式,将PRB资源中划分多个簇;其中,每个簇中包含的PRB对的数目相同;
分簇确定单元,配置为从每一簇中选择一个或多个PRB对作为发送数据的PRB对资源。
本领域内的技术人员应明白,本发明的实施例可提供为方法、系统、或计算机程序产品。因此,本发明可采用硬件实施例、软件实施例、或结合软件和硬件方面的实施例的形式。而且,本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理 设备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
基于此,本公开实施例还提供了一种计算机存储介质,所述计算机存储介质包括一组指令,当执行所述指令时,引起至少一个处理器执行本发明实施例所描述的载波中PRB资源分配方法。
需要说明的是,以上所述的实施例仅是为了便于本领域的技术人员理解而已,并不用于限制本公开的保护范围,在不脱离本公开的发明构思的前提下,本领域技术人员对本公开所做出的任何显而易见的替换和改进等均在本公开的保护范围之内。
工业实用性
本公开实施例提供的技术方案,按照预定的分簇方式,将PRB资源中划分多个簇;其中,每个簇中包含的PRB对的数目相同;从每一簇中选择一个或多个PRB对作为传输数据的PRB对资源。通过本公开实施例的方案,提供了一种非授权载波的随机接入的波形和一种资源分配方法,可以支持LTE系统中现有随机接入序列的映射,例如直接支持格式0的映射和发送,对于现有资源分配进行了改进,从而获得在频域离散的资源,从而满足地区管制的要求,也提供的一种PRB的分配,能够实现离散的资源分配,从而适用于非授权载波,使得设备在分配的资源以及其上的信号能量占到整个带宽以及能量的80%以上的要求。

Claims (24)

  1. 一种载波中物理资源块资源分配方法,所述方法包括:
    按照预定的分簇方式,将物理资源块资源中划分多个簇;其中,每个簇中包含的物理资源块对的数目相同;
    从每一簇中选择一个或多个物理资源块对作为传输数据的物理资源块对资源。
  2. 根据权利要求1所述的载波中物理资源块资源分配方法,其中,
    所述数据包括上行物理随机接入信道数据、上行物理共享信道数据、上行物理控制信道数据、探测参考符号中的一个或多个。
  3. 根据权利要求1所述的载波中物理资源块资源分配方法,其中,
    按照预定的分簇方式,将物理资源块资源中划分多个簇包括:
    根据簇的数量和簇之间的间隔K,确定各个簇的起始物理资源块对的编号,并将从起始物理资源块对开始的连续N1个物理资源块对划分为一个簇;其中,N1为每个簇中包含的物理资源块对的数目。
  4. 根据权利要求3所述的载波中物理资源块资源分配方法,其中,所述确定各个簇的起始物理资源块对的编号
    Figure PCTCN2017077560-appb-100001
    包括:
    Figure PCTCN2017077560-appb-100002
    其中,
    Figure PCTCN2017077560-appb-100003
    为上行物理资源块对资源总数;
    Figure PCTCN2017077560-appb-100004
    为簇分配时的物理资源块对偏移量,
    Figure PCTCN2017077560-appb-100005
    的取值范围为
    Figure PCTCN2017077560-appb-100006
    K为簇号均为奇数的相邻簇的簇内同一位置的物理资源块对之间的间隔,或K为簇号均为偶数的相邻簇的簇内同一位置的物理资源块对之间的间隔;
    fRA表示簇的编号;
    Figure PCTCN2017077560-appb-100007
    为簇的起始物理资源块对的编号。
  5. 根据权利要求3所述的载波中物理资源块资源分配方法,其中,所述确定各个簇的起始物理资源块对的编号
    Figure PCTCN2017077560-appb-100008
    包括:
    Figure PCTCN2017077560-appb-100009
    其中,
    Figure PCTCN2017077560-appb-100010
    为上行物理资源块对资源总数;
    Figure PCTCN2017077560-appb-100011
    取值范围为
    Figure PCTCN2017077560-appb-100012
    为簇分配时的物理资源块对偏移量;
    K为簇号均为奇数的相邻簇的簇内同一位置的物理资源块对之间的间隔,或K为簇号均为偶数的相邻簇的簇内同一位置的物理资源块对之间的间隔;
    fRA表示簇的编号;
    Figure PCTCN2017077560-appb-100013
    为簇的起始物理资源块对的编号;
    Y为每个簇中支持的连续的物理资源块对的数量。
  6. 根据权利要求5所述的载波中物理资源块资源分配方法,其中,还包括:
    Figure PCTCN2017077560-appb-100014
    其中,
    T用于描述每个簇内哪个或哪些物理资源块对被分配,T的取值大于等于0且小于等于Y-1;
    P按照系统带宽的物理资源块对编号描述哪些物理资源块对被分配。
  7. 根据权利要求4或5所述的载波中物理资源块资源分配方法,其中,当所述方法应用于用户设备时,接收基站通过信令通知的K的取值或fRA的取值中的一个,以使得用户设备根据通知的取值和系统带宽,确定另一个的取值。
  8. 根据权利要求7所述的载波中物理资源块资源分配方法,其中,所述根据通知的取值和系统带宽,确定另一个的取值包括:
    在系统带宽为20MHz或系统按照100个物理资源块对执行资源分配的 情况下:
    当通知的fRA取值为10时,确定对应K取值为10;
    当通知的fRA取值为6时,确定对应K取值为16;
    当通知的fRA取值为12时,确定对应K取值为8;
    当通知的K取值为10时,确定对应fRA取值为10;
    当通知的K取值为16时,确定对应fRA取值为6;
    当通知的K取值为8时,确定对应fRA取值为12。
  9. 根据权利要求7所述的载波中物理资源块资源分配方法,其中,接收基站通过信令通知的K的取值或fRA的取值中的一个按照如下方式中的一种执行:
    接收基站通过下行控制信息通知的K的取值或fRA的取值中的一个;
    在K和/或fRA作为小区或载波级别的参数时,接收基站通过广播类型的无线资源控制消息通知的K的取值或fRA的取值中的一个;
    在K和/或fRA作为小区或载波级别的参数时,接收基站通过公共下行控制信息通知的K的取值或fRA的取值中的一个;
    当K和/或fRA作为UE专用级别的参数时,接收基站使用UE专用的下行控制信息通知的K的取值或fRA的取值中的一个;
    当K和/或fRA作为UE专用级别的参数时,接收基站使用特定物理下行控制信道对应的下行控制信息通知的K的取值或fRA的取值中的一个。
  10. 根据权利要求1所述的载波中物理资源块资源分配方法,其中,
    所述从每一簇中选择一个或多个物理资源块对作为上行随机接入的物理资源块对资源包括:
    从每个簇中选择一个物理资源块对作为发送数据的物理资源块对资源;其中从每个簇中选择一个物理资源块对按照如下方式中的一种进行:
    选择每个簇中簇内编号相同的物理资源块对;
    对于簇号为偶数的簇,选择簇内编号为N2的物理资源块对,对于簇号 为奇数的簇,选择簇内编号为N3的物理资源块对,其中,N2和N3设置为相同或不同;
    选择相邻间隔为一个簇的两个簇中簇内编号为相同的物理资源块对。
  11. 根据权利要求1或10所述的载波中物理资源块资源分配方法,其中,当所述方法应用于用户设备时,接收基站通过RRC消息或下行控制信息通知的具体的簇内选择的物理资源块对的编号;所述下行控制信息为特定物理下行控制信道对应的下行控制信息。
  12. 根据权利要求1所述的载波中物理资源块资源分配方法,其中,
    所述从每一簇中选择一个或多个物理资源块对作为发送数据的物理资源块对资源包括:
    从每个簇中选择数目相同的物理资源块对作为发送数据的物理资源块对资源;其中从每个簇中选择一个物理资源块对按照如下方式进行:
    当子帧中支持i组上行随机接入时,选择每个簇中前i个物理资源块对;其中i为正整数。
  13. 根据权利要求3所述的载波中物理资源块资源分配方法,其中,按照如下方式中的一种确定K的取值:
    方式1、选择使得所有簇能够在整个系统带宽内均匀分布的K值;
    方式2、选择的K值使得编号为偶数的簇之间均匀分布,且使得相邻的偶数簇和奇数簇之间的间隔与K之间的差值为最小;或,选择使得编号为奇数的簇之间均匀分布,且使得相邻的偶数簇和奇数簇之间的间隔与K之间的差值为最小;
    方式3、选择使得所有簇能够在整个系统带宽内均匀分布的K值,在不存在K值使得所有簇能够在整个系统带宽内均匀分布的情况下,选择K值使得编号为偶数的簇之间均匀分布,且使得相邻的偶数簇和奇数簇之间的间隔与K之间的差值为最小;或,选择使得编号为奇数的簇之间均匀分布,且使得相邻的偶数簇和奇数簇之间的间隔与K之间的差值为最小。
  14. 根据权利要求1所述的载波中物理资源块资源分配方法,其中,当发送数据为上行随机接入信道信号时,为每一组随机接入分配超过6个 物理资源块对时,此时从分配的物理资源块对中,选择6个物理资源块对承载上行随机接入序列和对应的循环前缀;其中,选择是通过事先约定的规则,或者由基站动态选择然后通过信令通知UE的方式选择6个物理资源块。
  15. 根据权利要求14所述的载波中物理资源块资源分配方法,其中,还包括,对于每一组随机接入分配的物理资源块对中,剩余的物理资源块对发送任意填充数据;或重复发送上行随机序列和对应循环前缀,所述重复包括全部重复或部分重复。
  16. 根据权利要求14所述的载波中物理资源块资源分配方法,其中,所述事先预定的规则为:选择每一组上行随机接入的物理资源块对中编号的前6个、或后6个、或中间6个来发送完整的上行随机接入序列和对应的循环前缀。
  17. 根据权利要求6所述的载波中物理资源块资源分配方法,其中,当所述方法应用于用户设备时,接收基站通知的所述T的取值,T为一个或多个取值,T取值为簇内的物理资源块对编号。
  18. 根据权利要求6所述的载波中物理资源块资源分配方法,其中,
    如果
    Figure PCTCN2017077560-appb-100015
    被使用为物理资源块对资源分配,每个T值或T值的集合计算获得的P值对应的物理资源块对资源为一个用户设备或一个数据块分配的物理资源块对资源。
  19. 根据权利要求6所述的载波中物理资源块资源分配方法,其中,
    如果
    Figure PCTCN2017077560-appb-100016
    被使用为上行随机接入物理资源块对资源分配,每个T值或T值的集合计算获得的P值对应的物理资源块对资源为一组随机接入的物理资源块对资源。
  20. 一种载波中物理资源块资源分配装置,所述装置包括:
    分簇单元,配置为按照预定的分簇方式,将物理资源块资源中划分多个簇;其中,每个簇中包含的物理资源块对的数目相同;
    物理资源块对选择单元,配置为从每一簇中选择一个或多个物理资源块对作为传输数据的物理资源块对资源。
  21. 根据权利要求20所述的载波中物理资源块资源分配装置,其中,
    所述分簇单元配置为:
    根据簇的数量和簇之间的间隔K,确定各个簇的起始物理资源块对的编号
    Figure PCTCN2017077560-appb-100017
    并将从起始物理资源块对开始的连续N1个物理资源块对划分为一个簇;其中,N1为每个簇中包含的物理资源块对的数目。
  22. 根据权利要求20所述的载波中物理资源块资源分配装置,其中,
    所述物理资源块对选择单元包括:
    第一选择模块,配置为从每个簇中选择一个物理资源块对作为发送数据的物理资源块对资源;其中第一选择模块按照如下方式中的一种方式从每个簇中选择一个物理资源块对:
    选择每个簇中簇内编号相同的物理资源块对;
    对于簇号为偶数的簇,选择簇内编号为N2的物理资源块对,对于簇号为奇数的簇,选择簇内编号为N3的物理资源块对,其中,N2和N3设置为相同或不同;
    选择相邻间隔为一个簇的两个簇中簇内编号为相同的物理资源块对。
  23. 根据权利要求20所述的载波中物理资源块资源分配装置,其中,
    所述物理资源块对选择单元包括:
    第二选择模块,配置为从每个簇中选择数目相同的物理资源块对作为发送数据的物理资源块对资源;其中从每个簇中选择一个物理资源块对按照如下方式进行:
    当子帧中支持i组上行随机接入时,选择每个簇中前i个物理资源块对;其中i为正整数。
  24. 一种计算机存储介质,所述计算机存储介质包括一组指令,当执行所述指令时,引起至少一个处理器执行如权利要求1至19任一项所述的载波中物理资源块资源分配方法。
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