CN101742665B - Method for sub-channelizing and mapping wireless resources - Google Patents
Method for sub-channelizing and mapping wireless resources Download PDFInfo
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Abstract
The invention discloses a method for sub-channelizing and mapping wireless resources, which comprises the steps of carrying out replacement and rearrangement on the resources in a conventionally distributed resource group in each uplink sub-frame by taking the basic unit (tile) as the unit; dividing the conventionally distributed resources in each uplink sub-frame into distributed resource sub-groups corresponding to all TTI allocations according to allocated transmission time interval (TTI) allocation combined information; and replacing and/or mapping an LDRU onto the tile in the frequency band of the corresponding distributed resource sub-group in a frequency hopping way according to the logic distributed resource block (LDRU) structure under the corresponding TTI allocation of the distributed resource sub-group in each distributed resource sub-group. The adoption of the method can realize the sub-channelizing and the mapping of the wireless resources with the different TTI allocation combinations, thereby meeting a variety of user business performance demands, fully and high-efficiently utilizing the resources and improving the frequency spectrum effectiveness of a system.
Description
Technical field
The present invention relates to the Radio Resource mapping techniques in the OFDM (OFDM), particularly relate to the method that a kind of different Transmission Time Interval (TTI, Transmission Time Interval) is gone up Radio Resource sub-channelizing and mapping.
Background technology
Along with the constantly development of broadband wireless communication technique ground; All adopt the access mode of OFDM such as micro-wave access to global intercommunication (WiMAX), Ultra-Mobile Broadband (UMB) and 3GPP Long Term Evolution next generation mobile communication systems such as (LTE), different user is realized the purpose that multiple access inserts through the orthogonal sub-carriers resource that takies some.
In ofdm system, on time domain, be divided into a plurality of OFDM symbols, on frequency domain, then be divided into a plurality of subchannels, each subchannel is the set of one group of subcarrier.Sub-channelizing (Subchannelization) allows user site that through-put power is concentrated on the sub-set (subchannel) of total OFDM subcarrier, can improve coverage and ability, also can make a plurality of user site on different subchannels, carry out synchronous transmission.The main foundation of resource sub-channelizing and resource mapping is the frame structure of system in the wireless communication system, and the scheduling time of Radio Resource divides according to the frame structure of system at interval, and for example: a scheduling time can be a sub-frame or a plurality of subframe at interval.Usually, with the subframe for scheduling time granularity can provide good dispatching flexibility with the scheduling real-time.
In order to accomplish to wireless resource allocation; At first need carry out the sub-channelizing and the mapping of Radio Resource; That is: with the logical resource unit according to the structure mapping of sub-channelizing rule and Resource Unit to the Radio Resource of physics, so that system utilizes the logical resource unit to dispatch and the resource allocation indication.For the situation of single sub-frame TTI configuration, system has carried out frequency partition with the Radio Resource on each subframe, in each subregion, is divided into centralized resources group and distributed resource group again, to obtain the gain of frequency selectivity and frequency diversity scheduling respectively.That is to say that centralized mapping resource and distributed mapping resource can be frequency division multiplexings on a sub-frame, promptly share the frequency resource on the sub-frame.
In the prior art, the process that system carries out respective sub-channelization and resource mapping is: be that unit replaces (permutation) rearrangement with the available subcarrier resource on each subframe with N Physical Resource Block (PRU) earlier; To reset resource allocation after (reordered) again in several frequency partition (FrequencyPartition); On each frequency partition, be divided into centralized again carrier resource and the distributed resource group.Wherein, resource and centralized logical resource block (LLRU) can directly be shone upon in the centralized resources group; The distributed resource group is divided into two types of resources again: distributed resource and conventional distributed resource that ascending power is optimized, with optimization of system performance.The distributed resource that system at first distributes ascending power to optimize, and be mapped to logical, distributed Resource Block (LDRU) after with the frequency hopping substitute mode frequency hopping unit (hopping units) being reset in this frequency field, claim again on the subframe cascade distributed resource blocks; The residue distributed resource in conventional distributed resource zone, is that unit replace rearrangement with the elementary cell (tile) that constitutes such resource then as conventional distributed resource, and shines upon with corresponding LDRU.
But for the wireless transmission of terminal to base station, promptly so-called uplink (Uplink Transmission) also need be considered another key factor, i.e. the problem of up covering.Because the power at terminal is limited, the raising of up covering need be considered the subframe cascade is dispatched to a great extent, thus accumulating signal energy effectively.For example: for the uplink of some power limited, a TTI can comprise more than one subframe, so that enlarge up covering or improve up-link capacity.
For the situation that comprises a plurality of subframes among the TTI; Two kinds of method for mapping resource are arranged: a kind of method is; A Resource Block still is distributed in the sub-frame; The a plurality of Resource Block that distribute for the terminal can the time priority principle distribute on a plurality of subframes among the TTI, though this method can solve the problem of up covering to a certain extent, when this method can not be divided exactly by the number of sub frames in the TTI at the scheduled resources piece; Terminal power is subject on the maximum subframe of the Resource Block of distribution, thereby makes up covering still can receive certain restriction.Another kind method is; Resource Block on a plurality of subframes among the TTI is carried out cascade, dispatch, realize the scheduling on many subframes TTI as an expanding resource blocks; This method also can solve the problem of up covering to a certain extent; But shortcoming is, the scheduling underaction, and the scheduling granularity is thicker.
In order effectively to address the above problem; Can the running time-frequency resource on the Resource Block be distributed on each sub-frame in the TTI; That is: the resource on the Resource Block is expanded distribution in time; Compaction profile on frequency, thus cumlative energy improves up covering to solve the problem of power limited.And identical under scheduling granularity and the single sub-frame TTI situation, it is thinner to dispatch granularity, and dispatching flexibility is bigger.For instance, when TTI was configured to two sub-frame, a Resource Block was made up of two elementary cells, distributes an elementary cell on each subframe respectively; When TTI was configured to three sub-frame, a Resource Block was made up of three elementary cells, distributes an elementary cell on each subframe respectively; When TTI was configured to four sub-frame, a Resource Block was made up of four elementary cells, distributes an elementary cell on each subframe respectively.
At present, under a lot of situation, system is in order to provide scheduling more flexibly, and further optimization of system performance can be used single sub-frame TTI and many subframes TTI scheduling mixing, to satisfy the dispatching requirement of different user.So-called multiple TTI mixed configuration; The transmission means that a part of exactly resource employing TTI is a sub-frame is dispatched; And another part resource to adopt TTI be that the transmission means of a plurality of subframes (subframe cascade) is dispatched; In this case, just need further divide into groups to Radio Resource, sub-channelizing and resource mapping treatment.But, also there are not concrete Radio Resource sub-channelizing and mapping scheme to propose to the situation of different TTI mixed configuration.
Summary of the invention
In view of this, main purpose of the present invention is to provide the method for a kind of Radio Resource sub-channelizing and mapping, can realize the sub-channelizing and the resource mapping of the fashionable Radio Resource of different TTI configuration groups.
For achieving the above object, technical scheme of the present invention is achieved in that
The method of a kind of Radio Resource sub-channelizing and mapping comprises:
Is unit with the resource in the conventional distributed resource group in each sub-frame of uplink with elementary cell tile, in the frequency band of this resource, replaces rearrangement;
According to the Transmission Time Interval TTI configuration combined information of configuration, the conventional distributed resource after resetting in each sub-frame of uplink is divided into the distributed resource group of corresponding each TTI configuration;
In each distributed resource group; According to the logical, distributed Resource Block LDRU structure under the corresponding TTI configuration of this distributed resource group, LDRU is mapped on the tile of corresponding each subframe in corresponding distributed resource group frequency band with displacement and/or frequency hopping mode.
Wherein, the displacement of conventional distributed resource rearrangement mode is identical in said each sub-frame of uplink; Or it is different according to subframe numbers.
In the such scheme, the TTI of said configuration configuration combination information from base station is confirmed according to the configuration of sub-frame of uplink number and the dispatching requirement of customer service.
This method further comprises: said base station is sent determined TTI configuration combined information through the form of system configuration control information to terminal broadcast.
In the such scheme, said TTI configuration combination packets of information is drawn together: the configuration compound mode of the number of TTI configuration categories and TTI.Said TTI configuration combined information also comprises: the resource of each TTI configuration compound mode is occupied ratio.
In the such scheme, said sub-frame of uplink number be configured to one to four sub-frame; Said TTI configuration compound mode is: TTI is merely a kind of combination of number of sub-frames; Or TTI is that a sub-frame and TTI are the combination of two sub-frame; Or TTI is that a sub-frame and TTI are the combination of three sub-frame; Or TTI is that a sub-frame and TTI are the combination of four sub-frame, or TTI is that a sub-frame, TTI are that two sub-frame and TTI are the combination of four sub-frame.
This method further comprises: occupy ratio according to corresponding resource under the TTI configuration compound mode in the said TTI configuration combined information and each TTI configuration; Conventional distributed resource after resetting in each sub-frame of uplink is divided into distributed resource group, and confirms the size of each distributed resource group.
In the such scheme, will comprise that the TTI of different number subframes disposes pairing resource respectively as different distributions formula resource subset.
In the such scheme, said LDRU is mapped to corresponding each subframe all tile discrete distribution in corresponding distributed resource group frequency band with displacement and/or frequency hopping mode.
The method of Radio Resource sub-channelizing provided by the present invention and mapping is divided into distributed resource group according to TTI configuration combined information with conventional distributed resource by the base station, in the zone of each distributed resource group; Carry out the resource mapping according to the corresponding resource blocks type, so, can pass through Radio Resource sub-channelizing and mapping scheme flexibly; Realization is dispatched different TTI configuration combined resource; Thereby for the user provides frequency diversity gain and power ascension effect, satisfy various users' service feature requirement, Cell Edge User is improved up covering; Utilize resource fully efficiently, improve system spectral efficiency.
Method of the present invention can adopt the sub-channelizing and the resource mapping of different scheme realization Radio Resources to different TTI configuration combinations, and realization is simple, convenient, flexible, can reduce the implementation complexity of system, is applicable to the application in the future broadband wireless communication systems.
Description of drawings
Fig. 1 is the realization flow sketch map of the inventive method one embodiment;
Fig. 2 is LDRU is formed in different TTI configuration down among the embodiment one tile at discrete distribution sketch map physically;
Fig. 3 is the distribution schematic diagram of LDRU under two sub-frame of uplink conditions among the embodiment one;
Fig. 4 is LDRU is formed in different TTI configuration down among the embodiment two tile at discrete distribution sketch map physically;
Fig. 5 is the distribution schematic diagram of LDRU under two sub-frame of uplink conditions among the embodiment two;
Fig. 6 is LDRU is formed in different TTI configuration down among the embodiment three tile at discrete distribution sketch map physically;
Fig. 7 is the distribution schematic diagram of LDRU under three sub-frame of uplink conditions among the embodiment three;
Fig. 8 is LDRU is formed in different TTI configuration down among the embodiment four tile at discrete distribution sketch map physically;
Fig. 9 is the distribution schematic diagram of LDRU under four sub-frame of uplink conditions among the embodiment four;
Figure 10 is LDRU is formed in different TTI configuration down among the embodiment five tile at discrete distribution sketch map physically;
Figure 11 is the distribution schematic diagram of LDRU under four sub-frame of uplink conditions among the embodiment five;
Figure 12 is LDRU is formed in different TTI configuration down among the embodiment six tile at discrete distribution sketch map physically;
Figure 13 is the distribution schematic diagram of LDRU under four sub-frame of uplink conditions among the embodiment six;
Figure 14 is LDRU is formed in different TTI configuration down among the embodiment seven tile at discrete distribution sketch map physically;
Figure 15 is the distribution schematic diagram of LDRU under two sub-frame of uplink conditions among the embodiment seven.
Embodiment
Basic thought of the present invention is: system disposes combined information according to TTI, and conventional distributed resource is divided into distributed resource group, in the zone of each distributed resource group, carries out the resource mapping according to the corresponding resource blocks type.
Wherein, said TTI configuration combined information can obtain different TTI configuration combinations by factors such as the dispatching requirement decision of base station according to the sub-frame of uplink number and the customer service of configuration; Further, resulting TTI configuration combined information can send to subordinate terminal through broadcast mode by the base station.
Among the present invention, the base station can be carried out the scheduling of subframe tandem type according to user's QoS (QoS) requirement for big data quantity and the not high service-user of delay requirement, that is: comprise greater than a sub-frame in a TTI.Distribute for different subframe tandem type scheduled resources; Adopt the logical, distributed Resource Block design under the different TTI configuration; Be called subframe cascade distributed resource blocks again, the structure of every kind of subframe cascade distributed resource blocks adapts to the resource allocation under the corresponding scheduling mode respectively.
The present invention is in the ascending resource mapping of ofdm system, and the base station can be provided with different TTI according to the configuration of system uplink number of sub-frames, the requirement of user QoS and user's channel condition.For example: in the system, a radio frames is made up of eight sub-frame, and sub-frame of uplink generally can dispose 1～4 sub-frame, and so, the number of sub frames that TTI comprised just can be 1～4.Carry out the TTI configuration according to dispatching requirement of user in the system, can there be a plurality of different TTI configurations simultaneously in a system, as: TTI is configured to the combination of a sub-frame and two sub-frame respectively; Or the combination of sub-frame and three sub-frame; Or the combination of sub-frame and four sub-frame; Or the combination of a sub-frame, two sub-frame and four sub-frame; Or TTI is merely combination of a kind of number of sub-frames or the like.
In the conventional distributed resource on each subframe; Can be that granularity is carried out the rearrangement of tile level subcarrier with certain constant series according to the tile that constitutes conventional distributed resource blocks; Accomplish the sub-channelizing process of conventional distributed resource on each subframe, the conventional distributed resource sub-channelizing process in the TTI on each sub-frame can be identical or different.Wherein, the size of a tile can be N OFDM symbols of 6 number of sub-carrier *, and N is the symbolic number in the sub-frame, and general, N is 6.
Among the present invention, the base station can further be divided into conventional distributed resource the distributed resource group of corresponding TTI configuration according to different TTI configurations.In each distributed resource group; According to this distributed resource group corresponding TTI configuration and corresponding resource blocks structure; With TTI configuration down the tile in each subframe carry out resource with displacement and/or frequency hopping mode with logical resource block and shine upon, that is: shine upon according to the tile constant series and the logical resource block of each subframe.When the constant series of each subframe are identical, then also need further frequency hopping mode, as: in distributed resource group, tile is carried out cyclic shift, carry out the resource mapping with logical resource block more afterwards.
The handling process of Radio Resource sub-channelizing of the present invention and mapping method one embodiment, as shown in Figure 1, may further comprise the steps:
Step 101: the base station is unit with tile with the resource in the conventional distributed resource group in each sub-frame of uplink, in the frequency band of this resource, replaces rearrangement;
Here, the displacement of the conventional distributed resource in each sub-frame of uplink rearrangement mode can be identical; Also can be and difference according to subframe numbers.Wherein, displacement rearrangement mode can adopt prior art, resets by certain sequence or certain mode or certain rule.
Step 102:, the conventional distributed resource after resetting in each sub-frame of uplink is divided into the distributed resource group of corresponding each TTI configuration according to the TTI configuration combined information of configuration;
Here; Said TTI configuration combined information can comprise: the number of TTI configuration categories and TTI are that a sub-frame and TTI are the configuration compound mode of N sub-frame; The value of N is smaller or equal to the number of sub-frame of uplink in the radio frames, and typical value is 2 or 3 or 4.For example: TTI configuration combination packets of information draws together that TTI configuration categories number is 2, the configuration compound mode is that TTI is that a sub-frame and TTI are the combination of three sub-frame.Further, TTI configuration combined information can also comprise that the resource of each TTI configuration compound mode occupies ratio, such as: TTI is that sub-frame configuration resource down accounts for 60%, and TTI is that the resource under three sub-frame dispose accounts for 40%.
Occupy ratio according to corresponding resource under the TTI configuration compound mode in the said TTI configuration combined information and each TTI configuration; Can the conventional distributed resource after resetting in each sub-frame of uplink be divided into corresponding distributed resource group, and confirm the size of each distributed resource group.Concrete, can the TTI that comprise different number subframes be disposed pairing resource respectively as different distributions formula resource subset, as: with TTI is that sub-frame configuration resource is down organized as distributed resource; TTI is that the resource under the configuration of two sub-frame is organized as distributed resource; TTI is that the resource under the configuration of three sub-frame is organized as distributed resource; TTI is that the resource under the configuration of four sub-frame is organized as distributed resource.
Step 103: in each distributed resource group,, LDRU is mapped on the tile of corresponding each subframe in this distributed resource group frequency band with displacement and/or frequency hopping mode according to the LDRU structure under the corresponding TTI configuration of this distributed resource group;
Here, in TTI is pairing distributed resource of the configuration group of a sub-frame, a LDRU is mapped on m the tile of said subframe in this distributed resource group frequency band, the typical value of m can be 3; M tile discrete distribution on whole frequency band;
In TTI is pairing distributed resource of the configuration group of two sub-frame, a LDRU is mapped on m the tile of said two sub-frame in this distributed resource group frequency band, the typical value of m can be 1 or 2; According to displacement and/or frequency hopping mode LDRU is mapped to the tile on said two sub-frame, a said m tile is evenly distributed on said two sub-frame;
In TTI is pairing distributed resource of the configuration group of three sub-frame, a LDRU is mapped on m the tile of said three sub-frame in this distributed resource group frequency band, the typical value of m can be 3; According to displacement and/or frequency hopping mode LDRU is mapped to the tile on said three sub-frame, a said m tile is evenly distributed on said three sub-frame;
In TTI is pairing distributed resource of the configuration group of four sub-frame, a LDRU is mapped on m the tile of said four sub-frame in this distributed resource group frequency band, the typical value of m can be 4; According to displacement and/or frequency hopping mode LDRU is mapped to the tile on said four sub-frame; A said m tile is evenly distributed on said four sub-frame.
Wherein, said tile is for constituting the base unit of a LDRU; Said LDRU is that TTI comprises the LDRU under a plurality of sub-frame configuration.
For the TTI configuration combined information that obtains disposing, before step 101, the inventive method can further include:
Step 100: current TTI configuration combination is confirmed in the base station, and determined TTI configuration combined information is sent to self all terminal of subordinate.
Here, the base station can be made up multiple TTI configuration according to the configuration of sub-frame of uplink number and the dispatching requirement of customer service, and confirms as the TTI configuration combination of current system configuration.Wherein, the configuration of sub-frame of uplink number is meant has for what sub-frame of uplink in the current wireless frame, be generally 1～4 sub-frame; The dispatching requirement of customer service can be professional real-time requirement, as: business be real-time or professional be non real-time.
Determined TTI configuration combined information can be sent to terminal broadcast through the form of system configuration control information in the base station.
Below in conjunction with accompanying drawing and specific embodiment the present invention is described further.
The size of supposing the tile of formation LDRU is 6 number of sub-carrier * subframe internal symbol numbers, and for a conventional subframe, the symbolic number in the subframe is 6, and the size of tile is exactly 6*6 so.
Embodiment one:
The sub-frame of uplink number of supposing a radio frames is two, and system is provided with two kinds of TTI configurations, and being respectively TTI is a sub-frame and two sub-frame.A plurality of tile that a LDRU is formed in different TTI configuration down according to sub-channelizing and respective resources block structure in discrete distribution physically, as shown in Figure 2.Wherein, TTI is that the LDRU of a sub-frame is made up of three tile; TTI is that the LDRU of two sub-frame is made up of two tile, and the pane that each oblique line is filled is represented a tile.Fig. 2's is subframe laterally, and each subframe has 6 symbols, vertically is subcarrier.Fig. 2 is merely sketch map, and three tile when TTI is a sub-frame, two tile when TTI is two sub-frame do not represent continuously or uniformly-spaced.
The base station is divided into distributed resource group 1 and distributed resource group 2 according to the system configuration control information with conventional distributed resource.Wherein, said system configuration control information comprises: the information such as size of the number of sub frames of TTI and corresponding distributed resource group.
In distributed resource group 1, TTI is configured to a sub-frame, and a LDRU in this distributed resource group is mapped on three tile on this subframe according to the substitute mode of tile, and is as shown in Figure 3.Among Fig. 3, horizontal line is filled or a blank pane of filling is a tile who forms Resource Block.Specifically how be mapped to and adopt on the subframe and the similar mode of prior art, repeat no more here through the tile substitute mode.
In distributed resource group 2, TTI is configured to two sub-frame, and a LDRU in this distributed resource group is mapped to respectively on the tile on each subframe according to displacement and/or frequency hopping (hopping) mode of tile, and is as shown in Figure 3.Among Fig. 3, in the zone of distributed resource group 2, two panes that identical patterns is filled represent to form two tile of a LDRU, that is to say that a LDRU is mapped to respectively on two sub-frame, tile of mapping on each subframe.Wherein, said frequency hopping mode can be that the tile after the displacement is shifted by frame number, and is general, if the constant series that each subframe adopts are identical, then needs further to adopt the frequency hopping mode.
Embodiment two:
The sub-frame of uplink number of supposing a radio frames is two, and system is provided with two kinds of TTI configurations, and being respectively TTI is a sub-frame and two sub-frame.A plurality of tile that a LDRU is formed in different TTI configuration down according to sub-channelizing and respective resources block structure in discrete distribution physically, as shown in Figure 4.Wherein, TTI is that the LDRU of a sub-frame is made up of three tile; TTI is that the LDRU of two sub-frame is made up of four tile, and the pane that each oblique line is filled is represented a tile.Fig. 4's is subframe laterally, and each subframe has 6 symbols, vertically is subcarrier.Fig. 4 is merely sketch map, and three tile when TTI is a sub-frame, four tile when TTI is two sub-frame do not represent continuously or uniformly-spaced.
The base station is divided into distributed resource group 1 and distributed resource group 2 according to the system configuration control information with conventional distributed resource.
In distributed resource group 1, TTI is configured to a sub-frame, and a LDRU in this distributed resource group is mapped on three tile on this subframe according to the substitute mode of tile, and is as shown in Figure 5.Among Fig. 5, horizontal line is filled or a blank pane of filling is a tile who forms Resource Block.
In distributed resource group 2; TTI is configured to two sub-frame, and a LDRU in this distributed resource group is mapped to respectively on two tile on each subframe according to displacement and/or the frequency hopping mode of tile, and is as shown in Figure 5; The pane that oblique line is filled representes to form four tile of a LDRU; That is to say that a LDRU is mapped to respectively on two sub-frame, two tile of mapping on each subframe.Wherein, said frequency hopping mode can be that the tile after the displacement is shifted by frame number, and is general, if the constant series that each subframe adopts are identical, then needs further to adopt the frequency hopping mode.
Embodiment three:
The sub-frame of uplink number of supposing a radio frames is three, and system is provided with two kinds of TTI configurations, and being respectively TTI is a sub-frame and three sub-frame.A plurality of tile that a LDRU is formed in different TTI configuration down according to sub-channelizing and respective resources block structure in discrete distribution physically, as shown in Figure 6.Wherein, TTI is that the LDRU of a sub-frame is made up of three tile; TTI is that the LDRU of three sub-frame is made up of three tile, and the pane that each oblique line is filled is represented a tile.Fig. 6's is subframe laterally, and each subframe has 6 symbols, vertically is subcarrier.Fig. 6 is merely sketch map, and three tile when TTI is a sub-frame, three tile when TTI is three sub-frame do not represent continuously or uniformly-spaced.
The base station is divided into distributed resource group 1 and distributed resource group 2 according to the system configuration control information with conventional distributed resource.
In distributed resource group 1, TTI is configured to a sub-frame, and a LDRU in this distributed resource group is mapped on three tile on this subframe according to the substitute mode of tile, and is as shown in Figure 7.Among Fig. 7, oblique line is filled or a blank pane of filling is a tile who forms Resource Block.
In distributed resource group 2, TTI is configured to three sub-frame, and a LDRU in this distributed resource group is mapped to respectively on the tile on each subframe according to displacement and/or the frequency hopping mode of tile, and is as shown in Figure 7.Among Fig. 7, in the zone of distributed resource group 2, three panes that identical patterns is filled represent to form three tile of a LDRU, that is to say that a LDRU is mapped to respectively on three sub-frame, tile of mapping on each subframe.Wherein, said frequency hopping mode can be that the tile after the displacement is shifted by frame number, and is general, if the constant series that each subframe adopts are identical, then needs further to adopt the frequency hopping mode.
Embodiment four:
The sub-frame of uplink number of supposing a radio frames is four, and system is provided with two kinds of TTI configurations, and being respectively TTI is a sub-frame and two sub-frame.A plurality of tile that a LDRU is formed in different TTI configuration down according to sub-channelizing and respective resources block structure in discrete distribution physically, as shown in Figure 8.Wherein, TTI is that the LDRU of a sub-frame is made up of three tile; TTI is that the LDRU of two sub-frame is made up of two tile, and the pane that each oblique line is filled is represented a tile.Fig. 8's is subframe laterally, and each subframe has 6 symbols, vertically is subcarrier.Fig. 8 is merely sketch map, and three tile when TTI is a sub-frame, two tile when TTI is two sub-frame do not represent continuously or uniformly-spaced.
The base station is divided into distributed resource group 1 and distributed resource group 2 according to the system configuration control information with conventional distributed resource.
In distributed resource group 1, TTI is configured to a sub-frame, and a LDRU in this distributed resource group is mapped on three tile on this subframe according to the substitute mode of tile, and is as shown in Figure 9.Among Fig. 9, oblique line is filled or a blank pane of filling is a tile who forms Resource Block.
In distributed resource group 2, TTI is configured to two sub-frame, and a LDRU in this distributed resource group is mapped to respectively on the tile on each subframe according to displacement and/or the frequency hopping mode of tile, and is as shown in Figure 9.Among Fig. 9, in the zone of distributed resource group 2, two panes that identical patterns is filled represent to form two tile of a LDRU, that is to say that a LDRU is mapped to respectively on two sub-frame, tile of mapping on each subframe.Wherein, said frequency hopping mode can be that the tile after the displacement is shifted by frame number, and is general, if the constant series that each subframe adopts are identical, then needs further to adopt the frequency hopping mode.
Embodiment five:
The sub-frame of uplink number of supposing a radio frames is four, and system is provided with two kinds of TTI configurations, and being respectively TTI is a sub-frame and four sub-frame.A plurality of tile that a LDRU is formed in different TTI configuration down according to sub-channelizing and respective resources block structure in discrete distribution physically, shown in figure 10.Wherein, TTI is that the LDRU of a sub-frame is made up of three tile; TTI is that the LDRU of four sub-frame is made up of four tile, and the pane that each oblique line is filled is represented a tile.Figure 10's is subframe laterally, and each subframe has 6 symbols, vertically is subcarrier.Figure 10 is merely sketch map, and three tile when TTI is a sub-frame, four tile when TTI is four sub-frame do not represent continuously or uniformly-spaced.
The base station is divided into distributed resource group 1 and distributed resource group 2 according to the system configuration control information with conventional distributed resource.
In distributed resource group 1, TTI is configured to a sub-frame, and a LDRU in this distributed resource group is mapped on three tile on this subframe according to the substitute mode of tile, and is shown in figure 11.Among Figure 11, oblique line is filled or a blank pane of filling is a tile who forms Resource Block.
In distributed resource group 2, TTI is configured to four sub-frame, and a LDRU in this distributed resource group is mapped to respectively on the tile on each subframe according to displacement and/or the frequency hopping mode of tile, and is shown in figure 11.Among Figure 11, in the zone of distributed resource group 2, four panes that identical patterns is filled represent to form four tile of a LDRU, that is to say that a LDRU is mapped to respectively on four sub-frame, tile of mapping on each subframe.Wherein, said frequency hopping mode can be that the tile after the displacement is shifted by frame number, and is general, if the constant series that each subframe adopts are identical, then needs further to adopt the frequency hopping mode.
Embodiment six:
The sub-frame of uplink number of supposing a radio frames is four, and system is provided with three kinds of TTI configurations, and being respectively TTI is a sub-frame, two sub-frame and four sub-frame.A plurality of tile that a LDRU is formed in different TTI configuration down according to sub-channelizing and respective resources block structure in discrete distribution physically, shown in figure 12.Wherein, TTI is that the LDRU of a sub-frame is made up of three tile; TTI is that the LDRU of two sub-frame is made up of two tile; TTI is that the LDRU of four sub-frame is made up of four tile, and the pane that each oblique line is filled is represented a tile.Figure 12's is subframe laterally, and each subframe has 6 symbols, vertically is subcarrier.Figure 12 is merely sketch map, and three tile when TTI is a sub-frame, two tile when TTI is two sub-frame, four tile when TTI is four sub-frame do not represent continuously or uniformly-spaced.
The base station is divided into distributed resource group 1, distributed resource group 2 and distributed resource group 3 according to the system configuration control information with conventional distributed resource.
In distributed resource group 1, TTI is configured to a sub-frame, and a LDRU in this distributed resource group is mapped on three tile on this subframe according to the substitute mode of tile, and is shown in figure 13.Among Figure 13, oblique line is filled or a blank pane of filling is a tile who forms Resource Block.
In distributed resource group 2, TTI is configured to two sub-frame, and a LDRU in this distributed resource group is mapped to respectively on the tile on each subframe according to displacement and/or the frequency hopping mode of tile, and is shown in figure 13.Among Figure 13, in the zone of distributed resource group 2, four panes that identical patterns is filled represent to form four tile of two LDRU, that is to say that each LDRU is mapped to respectively on two sub-frame, tile of mapping on each subframe.Wherein, said frequency hopping mode can be that the tile after the displacement is shifted by frame number, and is general, if the constant series that each subframe adopts are identical, then needs further to adopt the frequency hopping mode.
In distributed resource group 3, TTI is configured to four sub-frame, and a LDRU in this distributed resource group is mapped to respectively on the tile on each subframe according to displacement and/or the frequency hopping mode of tile, and is shown in figure 13.Among Figure 13, in the zone of distributed resource group 3, four panes that identical patterns is filled represent to form four tile of a LDRU, that is to say that a LDRU is mapped to respectively on four sub-frame, tile of mapping on each subframe.Wherein, said frequency hopping mode can be that the tile after the displacement is shifted by frame number, and is general, if the constant series that each subframe adopts are identical, then needs further to adopt the frequency hopping mode.
Embodiment seven:
The sub-frame of uplink number of supposing a radio frames is two, and system is provided with two kinds of TTI configurations, and being respectively TTI is a sub-frame and two sub-frame.A plurality of tile that a LDRU is formed in different TTI configuration down according to sub-channelizing and respective resources block structure in discrete distribution physically, shown in figure 14.Wherein, TTI is that the LDRU of a sub-frame is made up of three tile; TTI is that the LDRU of two sub-frame is made up of three tile; The pane that each oblique line is filled is represented a tile.Figure 14's is subframe laterally, and each subframe has 6 symbols, vertically is subcarrier.Figure 14 is merely sketch map, and three tile when TTI is a sub-frame, three tile when TTI is two sub-frame do not represent continuously or uniformly-spaced.
The base station is divided into distributed resource group 1 and distributed resource group 2 according to the system configuration control information with conventional distributed resource.
In distributed resource group 1, TTI is configured to a sub-frame, and a LDRU in this distributed resource group is mapped on three tile on this subframe according to the substitute mode of tile, and is shown in figure 15.Among Figure 15, horizontal line is filled or a blank pane of filling is a tile who forms Resource Block.
In distributed resource group 2, TTI is configured to two sub-frame, and a LDRU in this distributed resource group is mapped to respectively on the tile on each subframe according to displacement and/or the frequency hopping mode of tile, and is shown in figure 15.Among Figure 15, in the zone of distributed resource group 2, three panes that identical patterns is filled represent to form three tile of a LDRU, that is to say that each LDRU is mapped to respectively on two sub-frame, shine upon one or two tile on each subframe respectively.Wherein, said frequency hopping mode can be that the tile after the displacement is shifted by frame number, and is general, if the constant series that each subframe adopts are identical, then needs further to adopt the frequency hopping mode.
The above is merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the method for Radio Resource sub-channelizing and mapping is characterized in that this method comprises:
Is unit with the resource in the conventional distributed resource group in each sub-frame of uplink with elementary cell tile, in the frequency band of this resource, replaces rearrangement;
According to the Transmission Time Interval TTI configuration combined information of configuration, the conventional distributed resource after resetting in each sub-frame of uplink is divided into the distributed resource group of corresponding each TTI configuration;
In each distributed resource group; According to the logical, distributed Resource Block LDRU structure under the corresponding TTI configuration of this distributed resource group, LDRU is mapped on the tile of corresponding each subframe in corresponding distributed resource group frequency band with displacement and/or frequency hopping mode.
2. method according to claim 1 is characterized in that, the displacement of conventional distributed resource rearrangement mode is identical in said each sub-frame of uplink; Or it is different according to subframe numbers.
3. method according to claim 1 is characterized in that, the TTI configuration combination information from base station of said configuration is confirmed according to the configuration of sub-frame of uplink number and the dispatching requirement of customer service.
4. method according to claim 3; It is characterized in that; Said with each sub-frame of uplink in resource in the conventional distributed resource group be unit with elementary cell tile; Before in the frequency band of this resource, replacing rearrangement, this method further comprises: current TTI configuration combination is confirmed in said base station, and sends determined TTI configuration combined information through the form of system configuration control information to terminal broadcast.
5. according to claim 1,2,3 or 4 described methods, it is characterized in that said TTI configuration combination packets of information is drawn together: the configuration compound mode of the number of TTI configuration categories and TTI.
6. method according to claim 5 is characterized in that, said TTI configuration combined information also comprises: the resource of each TTI configuration compound mode is occupied ratio.
7. method according to claim 5 is characterized in that, said sub-frame of uplink number be configured to one to four sub-frame; Said TTI configuration compound mode is: TTI is merely a kind of combination of number of sub-frames; Or TTI is that a sub-frame and TTI are the combination of two sub-frame; Or TTI is that a sub-frame and TTI are the combination of three sub-frame; Or TTI is that a sub-frame and TTI are the combination of four sub-frame, or TTI is that a sub-frame, TTI are that two sub-frame and TTI are the combination of four sub-frame.
8. method according to claim 1; It is characterized in that; This method further comprises: occupy ratio according to corresponding resource under the TTI configuration compound mode in the said TTI configuration combined information and each TTI configuration; Conventional distributed resource after resetting in each sub-frame of uplink is divided into distributed resource group, and confirms the size of each distributed resource group.
9. method according to claim 8 is characterized in that, will comprise that the TTI of different number subframes disposes pairing resource respectively as different distributions formula resource subset.
10. method according to claim 1 is characterized in that, said LDRU is mapped to corresponding each subframe all tile discrete distribution in corresponding distributed resource group frequency band with displacement and/or frequency hopping mode.
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| US10206211B2 (en) | 2015-06-04 | 2019-02-12 | Futurewei Technologies, Inc. | Device, network, and method for wideband long-term evolution (LTE) uplink transmission |
| CN107690188B (en) * | 2016-08-05 | 2019-12-24 | 上海朗帛通信技术有限公司 | Method and device in wireless transmission |
| WO2018053851A1 (en) * | 2016-09-26 | 2018-03-29 | Qualcomm Incorporated | Resource mapping based on spectral efficiency |
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| CN1221545A (en) * | 1996-06-07 | 1999-06-30 | 诺基亚电信公司 | Channel allocation method for packet network |
| CN1747586A (en) * | 2004-09-10 | 2006-03-15 | 中兴通讯股份有限公司 | Configuration and selection for subchannel of TD-SCDMA |
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| CN1221545A (en) * | 1996-06-07 | 1999-06-30 | 诺基亚电信公司 | Channel allocation method for packet network |
| CN1747586A (en) * | 2004-09-10 | 2006-03-15 | 中兴通讯股份有限公司 | Configuration and selection for subchannel of TD-SCDMA |
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