CN101395831B - Method and apparatus for sharing radio resources in a wireless communications system - Google Patents

Abstract

A physical layer packet format and signaling method is provided to minimize signaling overhead wherein multiple users share air interface resources to improve efficiency in orthogonal frequency division multiplexing (OFDM) and orthogonal frequency division multiple access (OFDMA) communication systems.

Description

Share the method and apparatus of Radio Resource in wireless communication system

Technical field

The present invention relates to wireless communication system, more specifically, relate to a kind of new method of sharing Radio Resource in wireless communication system.

Background technology

In wireless multiple-access communication system, all interior wireless users of specific cell share radio traffic channel resource (for example, bandwidth and the time interval).Because effective distribution of traffic channel resource between each wireless user directly affects the integral body utilization of traffic channel resource and the service quality that each wireless user experiences, thereby it is very crucial for the high-performance that guarantees all these users.

It is a kind of that the method for radio communication service is provided is to utilize existing OFDM (OFDM) technology.Comprise in other technology that radio communication is provided between a plurality of users: cut apart time division multiple access (TDMA) technology of wireless communication resources according to the time and cut apart code division multiple access (CDMA) technology of wireless communication resources according to spreading code between each user.

OFDM can carry respectively a part of user data by signal spectrum being divided into many equidistant tones (tone) on each frequency band.Each OFDM tone is commonly referred to as frequency sub-carrier.An OFDM relatively main advantage of frequency division multiplexing (FDM) technology of other type is, each tone and other tone are quadratures, and this just means between two tones and can not interfere with each other.Like this, allow tone overlapping, thereby compared with other FDM technology, increased lower the maximum amount of data that can communicate by letter of given allocated bandwidth.

Because independent tone or sets of tones can be distributed to the specific user, so the multiplexing essence of OFDM makes it be suitable for realizing under the multiple access environment.This just allows a plurality of users to transmit and receive data simultaneously, and unlike in tdma system etc. " time slot " to be allocated.The more important thing is, a plurality of frequency sub-carrier that can account for its bandwidth in total available bandwidth larger proportion are distributed to those requirements than the user of great share bandwidth resources.When a plurality of users adopted this mode to share bandwidth, system was commonly referred to as OFDM access or OFDMA.

In OFDMA, to each user who sends information, can distribute the tone of predetermined number, perhaps, alternately, can come interactive information to the tone assignment of variable number to the user.The distribution of tone is controlled by media access control (MAC) layer usually.The MAC layer is responsible for Resources allocation according to user's request usually.

The resource that certain base station is distributed can effectively be transmitted one or more grouping bags.When the resource priority allocation was given more than a grouping bag, this preferential resource was distributed to be commonly referred to as sticky assignment or to continue and is distributed.Similarly, being commonly referred to as non-sticky with regard to the distribution that stops after grouping bag of transmission distributes or non-lasting distribution.Sticky assignment reduces the expense of Resources allocation between each user, thereby can improve performance when the specific user needs the bandwidth of specific assigned.

Although sticky assignment can reduce expense and increase the effective throughput of system, the mode of this use system resource is not to be all desirable in all cases.Sticky assignment is set usually can guarantees specific user's minimum quality of service.When realizing that ip voice (VoIP) is used, can use sticky assignment.In these cases, when resource was distributed to a large number of users, sticky assignment had reduced communication delay.Yet the user often can not take full advantage of the resource of distributing to them.For example, in VoIP communication, the data in the time of can using data rate far below normal speech to send silence.In these cases, in the situation that not introduce the utilization that excess overhead or essence complexity maximize the resource that sticky assignment is distributed will be very favourable.

A kind of error control method is arranged, i.e. mixed automatic retransmission request (H-ARQ) method.In H-ARQ realized, when cyclic redundancy check (CRC) (CRC) failure of the packet bag that receives, receiver added (can not be decoded) packet bag to and detects buffering area (be positioned at receiver place).In the H-ARQ system, again transmit unacknowledged grouping bag, and construct the grouping bag of transmission again with being stored in the data that detect in buffering area.When the data from the detection buffering area are merged with the data that receive, just can guarantee to reproduce more accurately the grouping bag.Under these circumstances, if next by the cyclic redundancy check (CRC) to this grouping bag, so just determined the accuracy of data configuration.

In the system that uses H-ARQ, regularly clear buffer is to keep superperformance very crucial.Specifically, if plan to send to a user's information and plan to send to another one user's information to mix, so just may detect the misuse of buffering area.Wrap in the system of only planning to a user in each grouping, when new specific user's H-ARQ sequence begins, allow to remove the detection buffering area.May to attempt the single packet bag is decoded and a user is only arranged more than the user of be the purpose user in the situation that have, and the method for optimizing the new H-ARQ sequence of indication in the system that uses the subgroup bag will be comparatively favourable.In such system, indicate new H-ARQ sequence to a plurality of users, make each user can determine whether remove and detected buffering area.

OFDMA is that a kind of a plurality of user uses OFDM to carry out the system of multiple access access.In traditional OFDMA data sending apparatus, a kind of method of frequency division and time-division that realizes has been proposed when carrying out the multiple access access.And, also consider to realize diversity on frequency direction and time orientation, make the raising error correcting capability become possibility.

OFDM has showed different design methods.Cut apart in a kind of mode that makes a lot of users can share a communication channel combination that this channel can be counted as modulation and multiple access method.TDMA was cut apart according to the time, and CDMA is cut apart according to spreading code, and OFDM is cut apart according to frequency.OFDM is a kind of technology that frequency spectrum is divided into many equidistant tones and carries user part message on each tone.A tone can be counted as a frequency sub-carrier.OFDM can be considered to a kind of of frequency division multiplexing (FDM).But OFDM has a kind of important characteristic, i.e. each tone and all other tone quadratures.FDM needs the frequency protection frequency band usually between frequency, so that these frequencies do not interfere with each other.OFDM allows the spectrum overlapping of each tone, and because these tones are quadratures, so do not interfere with each other.By allowing band overlapping, reduced the total amount of required frequency spectrum.

Owing to can being different user schedule of apportionment tone or sets of tones, so OFDM also can be looked at as a kind of multiple access technique.A plurality of users share given bandwidth by this way, have so formed the system that is called OFDM access (OFDMA).When the user has information to send, can distribute for it tone of predetermined number; Perhaps, alternately, the amount of information that can will send according to the user is the tone of user assignment variable number.This distributes by media access control (MAC) layer that distributes according to the user's request scheduling resource controls.

In the scheme that the enhancing CDMA2000 of current proposition eats dishes without rice or wine, the group Resource Allocation Formula is put into a plurality of travelling carriages in a dispatch group.Each dispatch group is shared a public running time-frequency resource set.Utilize the bitmap signaling effectively to control time-frequency resource allocating to each the user's travelling carriage in dispatch group.

In bitmap controls 1, control with two bitmaps the running time-frequency resource of distributing to each user.First bitmap is called bitmap 1, is used for receiving service at every which travelling carriage of frame indicating.Each bit position of bitmap 1 is corresponding to a travelling carriage in dispatch group.If the corresponding bit of a travelling carriage is set as 1, this travelling carriage is in state of activation so, is namely sending data.If the corresponding bit of a travelling carriage is set as 0, this travelling carriage is in unactivated state so, does not namely send data.Second bitmap is called bitmap 2, is used to indicate the current running time-frequency resource that each is in the travelling carriage of state of activation of distributing to.The first bit of bitmap 2 is corresponding in bitmap 1, first is in user's (being called excited users 1) of state of activation, the second bit of bitmap 2 is corresponding to second user's (being called excited users 2) who is in state of activation, the 3rd bit of bitmap 2 is corresponding to the 3rd user's (being called excited users 3) who is in state of activation, etc.Running time-frequency resource is distributed to excited users 1 continuously to last excited users.In bitmap 21 expression distributes M running time-frequency resource, and 0 expression distributes N running time-frequency resource.

In bitmap controlled 2, the first bitmap was called bitmap 1, be used to indicate at this moment between in the interval, which travelling carriage in dispatch group will send new grouping bag.Each bit in bitmap 1 is associated with a travelling carriage in dispatch group.This travelling carriage of in bitmap 11 expression will send new grouping bag, and 0 represents that this travelling carriage does not have new grouping bag to send.The travelling carriage that is associated with first bit in bitmap 1 is called new grouping bag travelling carriage 1, and second bit in bitmap 1 is called new grouping bag travelling carriage 2, etc.The second bitmap is called bitmap 2, and the running time-frequency resource of sharing with dispatch group is corresponding one by one.This running time-frequency resource is current is used in bitmap 21 expression, 0 this running time-frequency resource of expression be not used at that time.New grouping bag travelling carriage 1 checks that bitmap 2 just knows that first untapped running time-frequency resource will distribute to it, and new grouping bag travelling carriage 2 checks that bitmap 2 just knows that second untapped running time-frequency resource will distribute to it, etc.

Yet for the signaling of the size that minimizes the running time-frequency resource common set that changes dispatch group, the user in dispatch group does not always use the size of running time-frequency resource fully.Thereby second group of user is called shared group, also is associated to use dispatch group there is no the surplus resources that uses with dispatch group.

Further, it should be noted, the running time-frequency resource of a plurality of groups can be overlapping partially or completely.This is called the scheduling resource group and shares.For example, 2 dispatch group, dispatch group A and dispatch group B have a common running time-frequency resource district.That is to say, the part running time-frequency resource of dispatch group A is identical with the part running time-frequency resource of dispatch group B.Do not have overlappingly in order to ensure the running time-frequency resource of distributing to travelling carriage, adopt different sequencing models to distribute the running time-frequency resource of each group.For example, dispatch group A with ascending order mode Resources allocation dispatch group B with descending mode Resources allocation.

Under the scheduling resource group was shared situation, the resource signaling that current handle can be shared to the mechanism of shared group was: by control channel this resource of signaling clearly.This method expense is very large.The present invention will describe in detail a kind of in the shared situation of scheduling resource group, in the situation that increase minimum or zero signaling consumption, untapped resource be passed through to have now bitmap signaling signaling to the method for shared group.

In wireless communication system, in a specific cell, a plurality of travelling carriages also referred to as the user, utilize the shared Radio Resource of sound or data service that carries of principle of multiplexing of certain type.This principle of multiplexing can be frequency division multiple access (FDMA), and wherein resource is counted as the frequency chunks on interval sometime; Time division multiple access (TDMA), wherein resource is counted as the time interval; Code division multiple access (CDMA), wherein resource is counted as quadrature or the pseudo-orthogonal coding on interval sometime; OFDM access (OFDMA), wherein resource is counted as the frequency sub-carrier on interval sometime; Or the combination of above-mentioned principle.

The base station can be distributed to specific travelling carriage to resource and transmit a grouping bag, or uses within the limited time interval.This resource is distributed and is called non-continuing or the non-sticky distribution.The base station can also be distributed to specific travelling carriage to resource and transmit more than one grouping bag, cancels until trigger one the action that distributes this resource.Cancel Resources allocation action can but be not limited to be expired or the packet loss that divides into groups triggers by clear and definite cancellation assignment messages, default timer.This resource is distributed and is called lasting or sticky assignment.Those skilled in the art also know, use sticky assignment might save sizable expense.

Yet, the possibility of using sticky assignment will exist resource not to be used.May be because the situation that resource is not used occurs many reasons.For example, sticky user may be the voip user, and VoIP grouping bag premature termination or 1/8 rate speech frame situation about being blocked.When this phenomenon occurs, to wait for the arrival of next VoIP grouping bag due to this user, thereby remain on the resource that the sticky assignment mode is distributed to this user the state of not being used.

Sharing sticky assignment (SSA) is a kind of technology that Radio Resource is shared enough in time, and wherein allocation of radio resources adopts the user of sticky assignment at least one and another adopts user of viscosity or non-sticky distribution at least.In this technology, be unique identification that is called MAC index (MACID) of each user assignment.The unique scrambler of this sign and this user is associated.More than one user can in time share specific resources.Yet at any given time, the base station can only provide resource for a user.The transmitter of base station comes this subgroup bag of scrambling with the purpose user's of the data sub-packet bag after encoding scrambler.The data sub-packet bag that user's receiver comes descrambling to receive with the scrambler of distributing to this user.If the subgroup bag that receives is to the specific user, the descrambling process is the inverse process of the transmitter scrambling process of carrying out so, and this user's receiver this subgroup bag of can correctly decoding.On the other hand, if the subgroup bag that receives not to a certain specific user, the descrambling process is no longer the inverse process of scrambling process so, and this user's receiver can not be correctly decoded this packet bag.

Utilize the H-ARQ technology,, may send with the form of subgroup bag more than this grouping wraps once with before data grouping bag is correctly decoded in the enough energy of accumulation and coded identification.Therefore, even this grouping bag is not correctly decoded, receiver also detects in buffering area the symbol of the subgroup bag that receives is added to, so that the symbol of the subgroup bag that these can be received carries out soft merging with the symbol that obtains from the transmission of next subgroup bag.If plan to send to a user's symbol and plan to send to another user's symbol to mix, may detect so the misuse of buffering area, namely produce grievous injury to detecting performance.For fear of the misuse that buffering area occurs to detect, can signal new H-ARQ sequence and begin.If receive the notice that new H-ARQ sequence begins, receiver will be removed the detection buffering area of receiver.Can indicate new H-ARQ sequence to begin by the signal that is called ARQ sequence of events number (AI_SN).When beginning to transmit new H-ARQ sequence, this signal switches between two states, and when transmitting the subsequent subpacket bag of before failed subgroup bag, this signal rests on previous state.This AI_SN indicating device can be carried in the header field of subgroup bag, perhaps is carried in independent signaling channel.

As the example that provides in Fig. 1, a shortcoming of such scheme is, when the voip user 130 who has carried out with sticky assignment distributing has occupied resource 110 with the shared same resource 110 of the type of doing one's best (BE) data user 140 of having carried out with viscosity or non-sticky distributing and current BE user 140 because its unsettled H-ARQ retransmits, voip user 130 is before can regaining channel resource 110, and having to by the time, unsettled H-ARQ of the BE user 104 retransmits the maximum retransmit number that successfully finishes or reach BE user 140.This might cause the excessive time-delay of using such as delay sensitive types such as VoIP and service quality (QoS) is reduced.In Fig. 1, a plurality of users need to carry out blind coding to this channel resource to sharing of channel resource, and monitor the AI_SN indication, detect buffering area to remove when new H-ARQ sequence begins.For example, as shown by arrows, user 130 and 140 shared channel resources 110, and monitor AI_SN indicating device 120.Each shared channel resources forms the SSA group with the user who distributes to it.And in a particular sector, can there be a plurality of so independent SSA groups.

Although Packet data service and application increase sharply, high-quality voice transfer remains an importance of wireless communication system design.Concerning effective management of the voice-and-data user that coexists for indispensable network performance.For example, in cdma2000 1x evolution data optimization (1xEV-DO) system, access network (AN) and access terminal grouped data between (AT) and the transmission of VoIP business are dispatched by AN usually.

Speech business is discontinuous in essence, and is comprised of larger inactivity minute section.Need to weave into group to the voice user of some, and distribute a shared running time-frequency resource set.Realize statistical multiplexing gain between the group membership.When the base station determined that the specific user is in discontinuous transmission (DTX) state in special time period, the base station can be given another user this user's time-frequency resource allocating.Statistical multiplexing gain also transmits to realize by premature termination H-ARQ.In case the user has confirmed its VoIP bag, according to the dispatching algorithm of using, other group membership begins to use this running time-frequency resource.

When setting up a group, distribute a unique identifier, GroupID.When AN distributed to this group to an AT, the unique identifier of AT, namely the MAC index, associated with this GroupID AN by the vertical message (Group Setup Message) of the establishment in table 1.Top signaling by the upper carrying of forward link data channel (F-DCH) is managed described message.

Table 1: message is found in voice user's establishment

Set up vertical message and also define the accurate location of Resource Block and the sequencing model of indexed resource allocation order.In time domain, the shared resource set is one group of VoIP frame that comprises the VoIP interlace mode.In frequency domain, although also can use the set of piece channel resource (BRCH), but shared resource is generally the set of distributed resource channel (DRCH).

Be unique ranking index of each AT distribution in group, and a fixedly interlace offset that is used in its superframe that sends for the first time the subgroup bag.Here it is will be adjusted into the continuous time between transmission for the first time the frame duration (20 milliseconds) of vocoder.

In case set up user group and for this user organize continue to distribute share the running time-frequency resource set after, use bitmap signaling is each user resource allocation (Fig. 2) in each VoIP frame.Bitmap signaling Resources allocation is used in the base station, and the user uses the bitmap signaling to determine its resource accurately in shared running time-frequency resource set.The bitmap signaling is used for first subgroup bag and follow-up re-transmission.

The length of the first bitmap (bitmap 1) is the number of user in group.The first bitmap is used for just serviced at which AT of each VoIP frame indicating.According to its ranking index, each AT is corresponding fixing position in bitmap.In the VoIP of correspondence frame, " 1 " expression excited users, and " 0 " expression non-excited users.The second bitmap (bitmap 2) can be used to refer to number and/or the grouping packet format of the piece that distributes.

Each AT has the distribution of the AT of less bit map location and determines its distribution in the first bitmap based on all.The first bitmap is used to refer to the AT of activation.The position of bit map location corresponding A T.For example, distributed the AT of the 0th group of position based on its distribution of the 0th location positioning in the first bitmap.Having ' 1 ' AT in the first bitmap activates.M piece of beginning distributed to has first AT of ' 1 ', and the piece of N is thereafter distributed to the AT with second ' 1 '.If only have the first bitmap, M and N are identical so, if two bitmaps are arranged, M and N can be different so.Have the primary importance in corresponding second bitmap of first user of ' 1 ' in the first bitmap, have in the first bitmap the second place in corresponding second bitmap of user of second ' 1 ', etc.

Position according to AT in the first bitmap is distributed, and distributes the ACK position to AT.For example, distribute the beginning N/2 AT in the first bitmap to send its ACK in an ACK position, and distribute in the first bitmap N/2 AT thereafter to send its ACK second ACK position.Similarly, can use even/strange structure, whereby, the AT that distributes on strange position in the first bitmap sends its ACK in an ACK position, and the locational AT of the idol of distributing in the first bitmap sends its ACK in the 2nd ACK position.

For the impact of the detection mistake that minimizes new H-ARQ sequence indicating device, indicated the beginning of new H-ARQ sequence by AI_SN.When beginning to transmit new H-ARQ sequence, AI_SN switches between two indicating devices, and when transmitting the subsequent subpacket bag of before failed subgroup bag, AI_SN rests on same state.Specifically, transmitter sends same indicating device in each subgroup bag of same H-ARQ sequence.When new H-ARQ sequence began, transmitter switched to indicating device on the another one indicating device.If receiver has missed the new H-ARQ indicating device of the first subgroup bag transmission, this receiver still can detect new H-ARQ indicating device.This is because the indicating device in the transmission of subsequent subpacket bag is different from the indicating device in previous subgroup bag transmission.Therefore, the corresponding mistake that detects of described new H-ARQ indicating device has effectively robustness.

According to the statistical property of speech business, need size and desired VoIP time delay and the performance requirement of the carefully compromise running time-frequency resource set that distributes.In order to ensure desired properties, may be required in the most of the time, surplus resources is arranged in group.Due to voice user and data user and deposit, thereby, the data user's (type of for example doing one's best business) who also comprises certain type in group together with the voip user, and the way that makes the data user be used for packet data transmission to surplus resources is very helpful.

Summary of the invention

In order to realize above-mentioned related invention purpose, present invention includes the feature that proves absolutely below and particularly point out in the claims.The following description and the accompanying drawing that provides have described exemplary embodiment of the present invention in detail.These embodiment have only illustrated several in the various ways that can use the principle of the invention.The detailed description of the present invention by carrying out below in conjunction with accompanying drawing makes other purpose of the present invention, advantage and New Characteristics clearer.

Summarize widely the even more important feature of the present invention, in order to can understand better following detailed description of the present invention, and be familiar with better the present invention's contribution technically.To illustrate also that hereinafter the present invention consists of the additional technical feature of the theme of claims.

In this respect, before describing at least one embodiments of the invention in detail, it should be understood that the application on structure detail and arrangement of components shown in that the present invention provides in being not limited to the following describes or accompanying drawing.The present invention can have other embodiment, and can put into practice in many ways and carry out.Should also be understood that word used herein and term only are used for illustration purpose, and should not regard as for restriction the present invention.

Similarly, those skilled in the art can be understood that, can be at an easy rate the disclosure based on concept other is used for realizing the structure of several purposes of the present invention, the basis of method and system as design.Therefore, importantly, as long as equivalent constructions does not deviate from the spirit and scope of the present invention, just think that claim comprises this equivalent constructions.

The present invention is by providing the method and system that can facilitate a plurality of user's shared resources to solve above-mentioned one or more problem.The present invention can find purposes in a variety of application.

An object of the present invention is to improve system effectiveness by the time-delay that allows the shared same asset of a plurality of users to reduce simultaneously the user of delay sensitive type application.

Another object of the present invention is, the base station gives user's processing more preferably that user that the delay sensitive type uses uses than time delay non-sensitive type when scheduled transmission, and the user who uses for the delay sensitive type provides shorter queuing delay and better QoS.Priority treatment can for, but be not limited to, during delay sensitive type user's new grouping bag (being new H-ARQ sequence) beginning, when unwrapping the beginning than time delay non-sensitive type user's new grouping, the higher chance of obtaining shared resource priority and more selection shared resource is arranged.

Another purpose of the present invention is the signaling consumption that reduces configuration and distribute shared resource.

Another purpose of the present invention is to provide a kind of multiplexed speech user and data user and makes them can share the method for identical running time-frequency resource, obtaining more effectively the utilizing of Radio Resource, thereby obtains the performance of better wireless system.

Another purpose of the present invention is by for voice user and data user distribute larger Resource Block (comparing with voice user's Resource Block), and keeps simultaneously the priority of higher voice user's transmission, serves better the voice user.

Another purpose of the present invention is that the bitmap signaling of utilizing existing bitmap control 1 or bitmap to control in 2 is come the surplus resources signaling to the travelling carriage in shared group.

Another purpose of the present invention be increase with minimum or zero signaling consumption the available resources signaling to the travelling carriage in shared group.

The invention provides and a kind ofly comprise that several different methods and device, a plurality of user share Radio Resource rather than resemble sticky assignment the system of allocation of radio resources to the specific user.The Radio Resource (for example, tone or frequency sub-carrier) that is used for sharing between a plurality of users is provided, and particularly sticky assignment has been given specific user's tone or the grouping pack arrangement of frequency sub-carrier.As disclosed, a grouping bag can be divided into a plurality of subgroup bags.Also providing a plurality of users of signaling to share has adopted the sticky assignment mode to distribute to the method for specific user's Radio Resource.Especially, disclose and utilized the H-ARQ error control with the base station that promotes to improve and the method for the communication between a plurality of user, especially disclose the communication means that utilizes the subgroup bag.

According to an aspect of the present invention, disclose a plurality of users of a kind of permission and shared same asset, reduce simultaneously the method for the user's that the delay sensitive type uses time-delay, the method comprises: form one or organize more than a shared sticky assignment (SSA) in a sector; Distribute more than a shared viscosity resource at least one SSA group; Described user is divided into first kind user and Equations of The Second Kind user at least; When described shared resource can be used for new grouping bag (being new H-ARQ sequence), give the described first kind user priority of obtaining described shared resource than described Equations of The Second Kind user Geng Gao; And when beginning transmission of new packets bag, give described first kind user than the described Equations of The Second Kind user chance of more options shared resource more.

According to another aspect of the present invention, disclose a kind of for minimizing the signaling consumption of setting up described SSA group, add and delete the user, indicate the H-ARQ state of described shared resource in described SSA group, and the method for identity of indicating the purpose user of current transmission.

According to an aspect of the present invention, disclose a kind of for voice user and data user are organized into groups, and make them can effectively share the new method of running time-frequency resource, the method comprises: send to setting up vertical message (being different to the voice user's) each data user who distributes to group with user and group specific information, and described user begins to monitor bitmap once receiving the vertical message of this establishment; Use bitmap signaling (perhaps using AI_SN and user index) notify voice user and data user they whether be activated, which resource block assignments to they and/or distributed which modulation and the encoding scheme index; Based on data user's QoS demand is controlled data user's access in the data user; The data user is assigned in a plurality of groups to alleviate the resource constraint to possible re-transmission; Utilize other resource, F_SCCH of surplus resources or bitmap signaling or based on the GroupID of blind Detecting, information (for example organizing management information) be broadcast to all users in this group.

According to the of the present invention first preferential embodiment, the individual voice user's of bitmap signal multiplex many (N) who expands by use transmission with many (M) individual data user's transmission to share identical running time-frequency resource.Although described voice user has higher service priority,, if any surplus resources is arranged, described surplus resources can be divided into and allows simultaneously maximum K the K that the data user sends data pipelines.Follow the VoIP bitmap, add the data bitmap and indicate grouping bag transfer of data.At the scheduler at AN place based on decisions such as channel quality, QoS demand and buffer states for which data user's service with use which modulation and encoding scheme (MCS).The data bitmap generally includes data bit figure header and corresponding MCS and resource size field.The data user of each activation will check the user in its front (comprising voice user and data user) on bitmap, calculates shared piece, and locates the current piece accurately of distributing to this data user.The size of coding groups bag depends on the size of surplus resources and the MCS scheme of using.If the number of information bit is less than the size of coding groups bag, may also need so to fill.This scheduler is designed to this data user's of balance power and MCS.Can be by the mapping of top signaling adjustment from the MCS bit to the actual packet form.

A variant according to a first advantageous embodiment of the invention utilizes the AI_SN bit of each data pipe in data bit figure header, and many (N) individual voice user and many (M) individual data user are organized into groups to share identical running time-frequency resource.By a new grouping bag indicating device, illustrated AI_SN namely as in [0016] is set to ' 1 ' or ' 0 ' or be somebody's turn to do by switchings and newly divide into groups to wrap indicating device, with the beginning of the new grouping bag that utilizes this new bag indicating device designation data pipeline.In case indicated new H-ARQ grouping bag, the data user in all this groups just attempts blind Detecting and should grouping wrap, and still, only has the dispatched users in this data pipe just can be successful, this be because of with this user's MAC ID scrambling this grouping wrap.

Another variant according to a first advantageous embodiment of the invention utilizes the user index of clearly indicating each data pipe in data bit figure header that many (N) individual voice user and many (M) individual data user are organized into groups to share identical running time-frequency resource.Keep in MCS value, for example ' 000 ', indicate the re-transmission of grouping bag, the new grouping of the indication transmission of wrapping of other value.

Another variant according to a first advantageous embodiment of the invention, the bitmap mapping of profit in data bit figure header organizes into groups to share identical running time-frequency resource to many (N) individual voice user and many (M) individual data user.The length of this data bit figure header is M, and whether each bit indicates corresponding data user to be activated.Similarly, need to keep in MCS value, for example ' 000 ', indicate the re-transmission of grouping bag, the new grouping of the indication transmission of wrapping of other value.

According to a further aspect in the invention, disclose a kind of for voice user and data user are organized into groups, and minimize grouping bag transfer of data to the new method of the impact of VoIP performance, the method comprises: the data user is distributed to a plurality of groups, so that described data user shares larger resource pool, and seldom having an opportunity to clash with the VoIP business, is especially such when retransmitting.

Appended and form in the claim of a disclosure part in the disclosure, particularly pointed out the various features of the novelty of other purpose of the present invention and performance characteristic of the present invention.In order to understand better the present invention, its service advantages and the special purpose by using it to reach, should be with reference to the illustrative flesh and blood of accompanying drawing and the preferred embodiment of the present invention of wherein setting forth.

It should be understood that any one feature of the present invention all can use separately or combine use with further feature.It should be understood that the feature of not mentioning can combine use with one or more features of mentioning here here.By the research drawings and detailed description, it will be appreciated by one of skill in the art that or become and understand other system of the present invention, method, feature and advantage.All such systems, method, feature and advantage all should be included in this manual, all should be within the scope of the invention, and all should be subject to the protection of claims.

The following description and accompanying drawing have specifically described exemplary embodiments more of the present invention.These embodiment have only illustrated and have realized a few in various ways that the present invention can adopt.

Description of drawings

For a more complete understanding of the present invention and advantage, can be with reference to below in conjunction with the description of the drawings, the same tag in accompanying drawing represents identical part:

Fig. 1 shows an example of existing technology in a plurality of shared among users resources.

Fig. 2 shows an example of traditional method of utilizing bitmap signaling marshalling voice user, and its Bitmap 1 expression is just receiving the voip user of service, and optional bitmap 2 represents size and/or the grouping packet format of institute's Resources allocation.Originally there is shown the example that the group resource is distributed.24 AT in a group are distributed in the shared resource set of a VoIP frame that in this example, 8 the DRCH resources (each DRCH is 16 tone * 8 symbols that are distributed in frequency domain) by each frame in two consecutive frames is formed.

The flow chart of Fig. 3 method of enabled wireless resource-sharing that is some embodiment according to the present invention in the OFDMA system.

Fig. 4 is depicted as a plurality of users and carries out the example that resource is distributed.

Fig. 5 illustrates according to the exemplary transmission sequence in a header portion of the present invention.

Fig. 6 illustrates according to the exemplary transmission sequence in another header portion of the present invention.

Fig. 7 illustrates an example according to the preferred embodiment of resource share method of the present invention.

Fig. 8 illustrates an example according to the alternate embodiments of resource share method of the present invention.

Fig. 9 illustrates the exemplary control channel structure according to bearing shared sticky assignment message of the present invention or AI_SN indicating device.

Figure 10 A illustrates and utilizes expansion bitmap signaling with K data pipeline N voice user of marshalling and M data user's a example.The data bitmap comprises data bit figure header, MCS and size field.The data user that the indication of data bit figure header activates; MCS index corresponding to MCS field indication; Size field is informed the number of the piece of distributing to described user.Last data pipe only needs the MCS field;

Figure 10 B illustrates each data pipe is indicated the arrival of new subgroup bag with the AI_SN of 1 bit the pattern 1 of data bit figure header.Suppose to have K data pipeline, the length of data bit figure header is K bit.

Figure 10 C illustrates the pattern 2 that the data bit figure header of the activation data user in each data pipe clearly indicated in user's index.Supposing has L bit (supporting at most 2^L data user) in index, the length of data bit figure header becomes L * K bit.

Figure 10 D illustrates each data user and represents it is the mode 3 of data pipe with the data bit figure header that transmits of having given this corresponding user assignment (' 1 ') no (' 0 ') with 1 bit.Suppose to have in group M data user, the length of data bit figure header is M.

Figure 11 illustrates an example of the bitmap signaling of the bitmap control 1 that is used to refer to the shared group resource.

Figure 12 is given in the overlapping situation of the resource part of dispatch group, is used for controlling at bitmap the illustrative example of signaling of the resource of 1 indicating shared group.

Figure 13 provides an illustrative example in the signaling of the resource of bitmap control 2 indicating shared group.

Embodiment

For making those skilled in the art make and to use the present invention, provide following explanation.In the situation that do not deviate from the spirit and scope of the present invention that limit here, except the embodiment and application of following detailed description, General Principle described here can also be applied to other embodiment and application.The present invention is not limited to given embodiment, and should comprise the maximum magnitude consistent with principle disclosed herein and feature.

Referring to Fig. 3, show the flow chart of realizing the embodiment that Radio Resource is shared in the OFDMA system.In the embodiment show in figure 3, receiver is receiving the process of information from step 101 in system.In step 103, receiver waits for that new subgroup bag arrives.During step 103, after receiving the subgroup bag, receiver has determined whether to receive new H-ARQ sequence indicating device.According to the present invention, can indicate new H-ARQ sequence with multiple different mode.

Consider the purpose user of the bag of signaling grouping in several ways.The purpose user's who comprises the grouping bag user's method clearly and/or is impliedly notified in utilization in wireless system, notice sends to the purpose user with particular packet.According to some embodiment of the present invention, the grouping pack arrangement makes the user can determine whether a specific grouping bag or subgroup bag will send to this specific user.According to this grouping pack arrangement, be the unique scrambler of each user assignment in system.Can distribute this unique scrambler with multiple different mode, comprise the method for other unique identifier that uses Mobile Station Identifier, MAC Address and specific user.Utilize this grouping pack arrangement, preferably, each subgroup bag is divided into header field and data field, can the subset of grouping bag or subgroup be responsible for assigning or minute task the specific user.In alternative embodiment of the present invention, the subgroup bag is not divided into header field and data field.

When impliedly identifying the purpose user of subgroup bag with scrambler, transmitter comes the data field of this subgroup bag of scrambling with unique scrambler of distributing to this purpose user, and the header field of this subgroup bag of scrambling alternatively.Only have the reception user of specific unique scrambler of those these subgroup bags that have to encode this grouping bag of could decoding, thereby, impliedly signaling these users they whether be the purpose user.Alternately, in other embodiments of the invention, can use header without the header of the grouping bag of scrambling or subgroup bag to send clearly information about the purpose user of grouping bag.

When the user received the grouping bag of specific scrambling, this user used its unique scrambler to remove this subgroup bag of descrambling based on the method for scrambling of using in system.If the grouping bag is to come scrambling with unique scrambler of distributing to this specific user, so, the grouping bag after descrambling is the Correct of original packet bag or subgroup bag.If user's scrambler that is to say to be used for the scrambler of coding groups bag different, this user is non-purpose user, and so, concerning this non-purpose user, the grouping bag after descrambling is useless.A kind ofly verify whether successful method is the descrambling process: utilize this grouping bag self-contained, the value that namely sends in the header of grouping bag or subgroup bag, or through the value that optional another signaling channel sends, carry out cyclic redundancy check (CRC).By determine grouping bag after descrambling or subgroup bag whether with original grouping bag or subgroup bag coupling, cyclic redundancy check (CRC) can verify that whether particular packet is take this user as the destination.

Use in the realization of H-ARQ at some, whenever cyclic redundancy check (CRC) (CRC) failure of subgroup bag or grouping bag, receiver just adds the information that receives in detection buffering area on receiver to.As discussed herein, if with the packet bag that will send to a user with to send to another packet bag of same subscriber maybe will send to another user's packet bag to mix, may detect so the buffering area misuse.For fear of misuse, embodiments of the invention provide a kind of host-host protocol that interweaves for specific H-ARQ.Due to new H-ARQ signaling begin be to want signaling receiver, above design to make the H-ARQ sequence at receiver place will complete before the new sequence of beginning.

Because the information that detects in buffering area will be useless in the reconstruction of the grouping bag of specific receiver, thereby in case receive the notice that new H-ARQ sequence has begun, receiver is just removed the detection buffering area at receiver place.In certain embodiments, send clearly the new H-ARQ sequence signal of indication in the header of grouping bag or subgroup bag.In further embodiments, send the signal of the new H-ARQ sequence of indication in such as the independent signaling channel of dedicated frequency subchannel.Therefore, can indicate new H-ARQ sequence with multiple different Signalling method or structure.

Except indicating new H-ARQ sequence, some embodiment also minimizes the impact of the detection mistake of new H-ARQ sequence indicating device.In certain embodiments, indicated the beginning of new H-ARQ sequence by a signal.When beginning to transmit new H-ARQ sequence, this signal switches between two indicating devices, and during the subgroup bag in retransmitting previous H-ARQ sequence, this signal remains unchanged.Like this, each subgroup bag of same H-ARQ sequence just transmits with same indicating device.New H-ARQ sequence Once you begin, indicating device just will be switched.In these embodiments, receiver can be by determining whether the indicating device of using in the subsequent subpacket bag is different from the indicating device of using in last subgroup bag transmission and detects new H-ARQ indicating device.

Refer again to Fig. 3, in step 105, receiver determines whether to have indicated new H-ARQ sequence.If received the indicating device of new H-ARQ sequence, so, in step 107, the place removes the H-ARQ buffering area at receiver.Otherwise, data sub-packet bag and the current data sub-packet bag that receives of storing in buffering area carried out soft merging.No matter whether removed buffering area, in step 109, all detected data in the subgroup bag.Detect the step that data can comprise descrambling subgroup bag or parton grouping bag in the subgroup bag.Detect data in step 109 after, in step 111, carry out CRC, namely this grouping bag self-contained in the subgroup packet head or the crc value that transmits in optional signaling channel with according to the subgroup bag in the value that calculates of the data that detect compare.If the CRC failure, execution in step 115 so, failed subgroup bag is added to detect in buffering area.As mentioned above, detect buffering area and allow the subgroup bag that retransmitted afterwards and failed subgroup inclusion are closed, thereby improve the possibility that builds correct subgroup bag.After being added in the detection buffering area, can take OFF or the form that do not send is carried out NACK to transmitter to failed subgroup bag in step 115.

If in step 111, CRC passes through, in step 113, receiver carries out ACK so, namely confirms correctly to have received this grouping bag to transmitter.ACK need to send a signal to transmitter from receiver by Return Channel usually.When transmitter failed to receive the ACK of particular sub-packet bag, transmitter will continue to resend the subgroup bag of this not confirmed.This process repeats limited number of attempt.Number of attempt depends on specific application.Send ACK in step 113 after, re-execute step 103, namely receiver is waited for new grouping bag again.

Be used for sending the second row that one of the indicating device of new H-ARQ sequence or H-ARQ indicating device can use quadravalence Walsh (Walsh) matrix, namely

Or " 0101 ".Other indicating device can use the fourth line of walsh matrix, namely

Or " 0110 ".Only use two walsh codes to indicate new H-ARQ sequence, therefore, can come multiplexing out of Memory with remaining two walsh codes, such as, ID sent in the CDM mode.

Referring now to Fig. 4,, wherein show and the invention provides the example that resource is distributed.In the illustrated embodiment, 8 distributed sub-carriers (201,202,203,204,205,206,207 and 208) have been distributed.Wherein 4 subcarriers (202,204,206 and 208) are used for sending new H-ARQ indicating device, and other 4 subcarriers (201,203,205 and 207) are used for sending data.The header that this particular example also shows the subgroup bag is comprised of separately new H-ARQ indicating device.In addition, in order to utilize the frequency diversity, 4 bits of the indicating device of this coding (header) are distributed in the resource of distributing.The modulation format of new H-ARQ indicating device is independent of resource and distributes, and for example, can use two-phase PSK (BPSK).Other modulation and configuration be can also use, and these modulation and configuration understood with this.

In other embodiments of the invention, the power output that is used for sending H-ARQ indicating device (head part of subgroup bag) can have obvious increase than the power output of the data division of subgroup bag.In such embodiments, send new H-ARQ indicating device by higher-wattage, can guarantee its reliability.

According to the present invention, some embodiments of the present invention can be used the signaling of sharing form.In certain embodiments, the use of this form is distributed by preferred (or " viscosity ") and hints, therefore, shared form described herein is all used in the transmission of all response sticky assignment.As a result, the user of all shared Radio Resources has been assigned with sticky assignment.Yet, in other embodiments of the invention, also can share form by signaling in assignment messages.In such embodiments, there is no need user assignment sticky assignment for the user's shared resource that has sticky assignment.In the situation that do not deviate from spirit of the present invention, can indicate the shared form that uses with other multiple Signalling method.

In other embodiments of the invention, can be related with the specific resources distribution, indication grouping bag process information, for example size is wrapped in the Multi-encoder grouping, or the modulation of data segment and encoding scheme (MCS).In such embodiments, the modulation that can fixed resource distributes, the perhaps modulation that distributes of indication or signaling resource clearly in resource is distributed.In another embodiment, MCS can dynamically change, and can come signaling MCS clearly by message in independent channel.In yet another embodiment, can come impliedly signaling MCS with the receiver at blind Detecting MCS just.In addition, the size of encoder packet bag can be different.The speed matching method that can use perforation or repeat distributes rate-matched to the size of different coding device grouping bag resource.With specific resources distribute the different coding device grouping bag be associated size number seldom, and receiver can carry out blind Detecting between them.For example, if a voip user's vocoder can send the frame of full rate, 1/2 speed, 1/4 speed and 1/8 speed, so just low rate frame is used and repeated so that all frames are all full rates.Receiver can carry out blind Detecting between different speed.In another embodiment, can indicate clearly the size of encoder packet bag, perhaps in header field or as the size of the clear and definite message signaling receiver encoder packet bag in individual channel.

About the ACK (confirmation) of H-ARQ process and NACK (not confirming) response, ACK and NACK represent with on-off keying, and specifically, NACK is with disconnected OFF (not transmission) expression, and ACK represents with logical ON.In this way, the processing at receiver place is all identical for all users.Usually, when the received data of user are not during take them as purpose, the user always responds with NACK.Thereby, owing in fact not transmitting, so a plurality of non-purpose user can utilize the same asset of assigning to respond with NACK, do not occur and do not have conflict.This just allows the purpose user to utilize shared Radio Resource signaling ACK, occurs and do not have conflict.The method of this special signaling ACK and NACK will saving resource, can certainly use in the present invention other to send the method for ACK and NACK response.

According to other aspects of the invention, can send clearly subgroup bag index in subgroup packet head part.In certain embodiments, the first subgroup bag index that occurs in the header portion of the first subgroup bag represents the first subgroup bag transmission.The first subgroup bag index also indicates receiver to begin the transmission of new packets bag.Simultaneously, any other subgroup bag index occurs and be expressed as the subsequent subpacket bag that retransmits previous kaput grouping bag.

In example shown in Figure 5, the sequence of quaternary (4-ray) walsh code as indication subgroup bag index.The first walsh code, W ₀ ⁴, be used to refer to the first subgroup bag transmission.The second walsh code, W ₁ ⁴, be used to refer to the second subgroup bag transmission.The 3rd walsh code, W ₂ ⁴, be used to refer to the 3rd subgroup bag transmission, etc.For minimal overhead, " n " the individual subgroup bag that only needs signaling clearly to begin, other subgroup bag transmission can come signaling with the continuation signal.As shown in Figure 5, utilize walsh code and complement thereof, can notify with the 4-ray walsh code 8 sub-packet transmissions of beginning.Corresponding subgroup bag transmission afterwards can be the complement of the 4th walsh code, As continuing indicating device.

In certain embodiments, the indication of transmission of new packets bag is included between the subset of two mutually exclusive walsh codes and switches.As shown in the example in Fig. 6, the first and second 4-ray walsh codes, W ₀ ⁴And W ₁ ⁴, form the first subset, and the third and fourth 4-ray walsh code, W ₂ ⁴And W ₃ ⁴, form the second subset.In the present embodiment, the first subgroup bag transmission is by the walsh code W in header portion ₁ ⁴Or W ₃ ⁴Indicate.For example, can use W ₁ ⁴Indicate the transmission for the first time of i grouping bag.Then, can use W ₀ ⁴Indicate i all subsequent transmission of grouping bag.For the transmission for the first time of i+1 grouping bag, can use W ₃ ⁴Indicate the transmission of the first subgroup bag.And, due to W ₃ ⁴In the second subset of walsh code, and W0 ⁴And W ₁ ⁴In the first subset of walsh code, so the W in the header portion of the first subgroup bag ₃ ⁴Also the transmission of the new grouping bag of indication begins.Can use W ₂ ⁴Indicate the subsequent transmission of i+1 grouping bag.Transmission for the first time for i+2 bag can reuse W ₀ ⁴Be used as indicating device, etc.

Like this, just can indicate the transmission of grouping bag new, even-numbered to begin with the walsh code in walsh code first subset.Can indicate with the residue walsh code in walsh code the first subset the later retransmission of the packet transmissions of even-numbered.By similar mode, can indicate packet transmissions new, odd-numbered to begin with the walsh code in walsh code second subset.Can indicate with the residue walsh code in walsh code the second subset the later retransmission of the packet transmissions of odd-numbered.Can use the beginning of other indication packet transmissions and the method for grouping packet number.For example, can carry clearly the subgroup packet number in header portion.

The invention provides unique method and the system of a kind of user's for also reduce simultaneously the application of delay sensitive type in the shared same asset of a plurality of users of wireless communication system permission time-delay.Yet, should be appreciated that following disclosing provides many different embodiment or example, is used for realizing different technologies feature of the present invention.The concrete example of assembly, signal, message, agreement and distribution hereinafter has been described, to simplify the disclosure.Certainly, these are only example but not are used for the scope that restriction claim of the present invention is protected.In order to prevent that unnecessary details from making the present invention become unclear, do not explain detailedly when providing known element.A lot of details unnecessary concerning understanding the present invention fully all within those skilled in the art's skill, therefore, have been omitted such details to a great extent.Control circuit described herein all within those skilled in the art's skill, thereby, omitted the details about these control circuits.

A kind of exemplary resources that Fig. 7 shows is according to an aspect of the present invention shared method.Referring to Fig. 7, SSA group N comprises 2 shared viscosity resources 210 and 220.In the first preferred embodiment, each shared resource has formed the business that independent tubes is used for carrying different user.AI_SN indicating device 230 and 240 indicates respectively to share in viscosity resource 210 and 220, whether new grouping bag begins.If the beginning is unwrapped in the new grouping of sharing in the viscosity resource, so corresponding AI_SN indicating device 230 or 240 switches between " 0 " and " 1 ".Otherwise AI_SN indicating device 230 or 240 remains on previous state.In the example shown in Fig. 7, BE user 250 and two voip users 260 and 270 share viscosity resources 210, simultaneously voip user 260 and 270 with the shared viscosity resource 220 of another BE user 280.

The transmitter at place, base station comes this subgroup bag of scrambling with the purpose user's of coded data subgroup bag scrambler.This data sub-packet bag that user's receiver comes descrambling to receive with the scrambler of distributing to this user.If the subgroup bag that receives is to the specific user, the descrambling process will be the inverse process of the scrambling process of carrying out at the transmitter place so, and this user's receiver this subgroup bag of can correctly decoding.On the other hand, if the subgroup bag that receives not to a certain specific user, the descrambling process will not be the inverse process of scrambling process so, and this user's receiver can not be correctly decoded this packet bag.

A grouping bag is transmitted to any user who uses identical shared resource in the base station, successfully decodes or reaches maximum retransmission until this grouping is coated.Therefore, redirect between the shared resource that can only distribute at the boundary of grouping bag to a user's who has distributed a plurality of shared resources transmission, rather than redirect between the re-transmission of the subgroup bag of same grouping bag.The purpose that this restriction is set is for when receiver carries out blind Detecting, reduces the quantity of decoding hypothesis and detection buffering area.In the situation that be indifferent to the complexity of receiver, can cancel such restriction.

As shown by arrows, 250 pairs of viscosity resources of BE user 210 are carried out blind decoding and are monitored AI_SN indicating device 230, when beginning newly to divide into groups in convenient viscosity resource 210 to unwrap, remove the detection buffering area in its receiver.280 pairs of viscosity resources of BE user 220 are carried out blind decoding and are monitored AI_SN indicating device 240, when beginning newly to divide into groups in convenient viscosity resource 220 to unwrap, remove the detection buffering area in its receiver.Each in voip user 260 and 270 detects buffering area with first in its receiver viscosity resource 210 is carried out blind decoding and monitored AI_SN indicating device 230, when unwrapping the beginning with the new grouping in convenient viscosity resource 210, remove first in its receiver and detect buffering area.Simultaneously, each in voip user 260 and 270 also detects buffering area with second in its receiver viscosity resource 220 is carried out blind decoding and monitored AI_SN indicating device 240, when unwrapping the beginning with the new grouping in convenient viscosity resource 220, remove second in its receiver and detect buffering area.In addition, BE user 250 or 280 can remove its independent detection buffering area, and voip user 260 or 270 can remove first and second in its receiver and detect buffering area when it successfully decodes bag when it successfully decodes bag.

In Fig. 7, voip user 260 and 270 can with its earliest availability select a shared viscosity resource to begin the transmission of new grouping bag (being new H-ARQ sequence) in such as the shared viscosity resource of a plurality of distribution of resource 210 and 220, and each in BE user 250 and 280 is endowed one and selects the chance of shared resource to begin the transmission of new grouping bag.In the present invention, although give chance that any class user selects resource can more than or be no less than at least the chance that any other class user selects resource, but more preferably, at beginning transmission of new packets bag when (being new H-ARQ sequence), should give chance that user that the delay sensitive type uses selects shared resource more than or be no less than at least the chance that user that the time delay non-sensitive type uses selects shared resource.

When successfully or H-ARQ when transmission of completing the grouping bag in shared resource after reaching maximum retransmission unsuccessfully, the base station gives the user that the delay sensitive type uses the priority of the user Geng Gao that uses than time delay non-sensitive type and obtains idle shared resource to begin the transmission of new grouping bag.

In an alternative embodiment, each shared viscosity resource in the SSA group can form an independent tubes with the business of carrying different user, perhaps the partly or entirely shared viscosity resource in the SSA group can form a combined pipe, to carry at least one user's business.If the formation of combined pipe is not dynamically all to have distributed to the user who dispatches based on channel and flow situation, user type, the availability of each shared resource and all shared resources in the SSA group, there is so which shared resource to distribute to the user who dispatches.For example, because the data rate that VoIP uses is more stable comparatively speaking, so can be defined as by the user that combined pipe carries non-voip user to those its business.In the case, considering that the shared pipeline of independent distribution and the pipeline that combination distributes can carry those its business can be by the user's of combined pipe carrying business, thereby these users need to carry out blind decoding.Fig. 8 shows the example of this alternative embodiment.Referring to Fig. 8, share viscosity resource 310 and 320 and distributed to BE user 350.The quantity of carrying out the required hypothesis of blind decoding and detecting buffering area in order to reduce user 350, can further limit, for example, as shown in the thick arrow in Fig. 8, business to user 350 only can be carried by the independent pipeline of resource 310 or the combined pipe of resource 310 and 320, but can not be carried by the independent pipeline of resource 320.In the case, user 350 receiver first detects buffering area the independent pipeline of resource 310 is carried out blind decoding with it, and with its second detection buffering area, the combined pipe of resource 310 and 320 is carried out blind decoding.And user 350 monitors AI_SN indicating device 330 and 340.In the situation that be indifferent to the complexity of receiver, can cancel such restriction.

In the example shown in Fig. 7,250,260,270 and 280 have distributed their shared viscosity resources separately take sticky assignment as the user.In addition, can distribute to the user that the delay sensitive type is used to the combination of any shared resource in the SSA group or any shared resource provisionally, namely non-sticky distributes, as long as these shared resources are available temporarily.Distribute the user of shared resource to need not to carry out blind decoding with the non-sticky method of salary distribution, also need not to monitor the AI_SN indicating device.Therefore, from receiver, sharing operation is transparent for non-sticky users.And, when the base station begins to transmit the new grouping bag of non-sticky users, no matter whether the base station switched the AI_SN indicating device, distribute shared viscosity resource concerning those sticky user 250,260,270 and 280 receiver for non-sticky users so, also transparent, until relate to decoding.For correctly decoding grouping bag separately, only when the beginning is unwrapped in its new grouping, detect buffering area just each user in sticky user 250,260,270 and 280 need to remove it.Yet when base station dispatcher gave with transmitting and scheduling the non-sticky users of using shared viscosity resource, base station dispatcher need to be considered the issuable potential time-delay of those delay sensitive type users that distributed shared viscosity resource.For a shared viscosity resource that load is lighter, non-sticky users is added to the utilance that can help to improve this shared viscosity resource on this shared viscosity resource.

According to another aspect of the present invention, disclose a kind of for minimizing the signaling consumption setting up described SSA group and need, adding and delete user, the H-ARQ state (for example, utilizing the AI_SN indicating device) of indicating shared resource and the method for indicating the purpose user identity of current transmission in the SSA group.We illustrate the method as an example of the control signal of the advanced interface evolution (AIE) of the current CDMA2000 standard of developing example.Those skilled in the art are clear that when the method for the present invention is applied to other wireless communication standard, other variation to be arranged very much.

Fig. 9 shows according to exemplary signal channel architecture of the present invention, and this channel can be used for sending shared sticky assignment, be used for setting up the SSA group or be used for sending the AI_SN indicating device by bearer messages.Referring to Fig. 9, at first the CRC bit is added on the information bit of message by CRC element 410.Encoder 415 adds forward error correction (FEC) coding on the output sequence of CRC element 410 to.420 pairs of coded-bits from encoder 415 of rate-matched element carry out repetition and/or perforation, so as the rate-matched in F-SSCH to a certain fixed rate.Then, scrambler 425 uses from the scrambler scrambling of scrambler generator 430 output sequence from rate-matched element 320.Scrambler generator 430 is PN registers, and with control channel, channel logo that be used to refer to purpose as seed.Scrambler sequence is interweaved by channel interleaver 435.Then, the sequence after interweaving is modulated by modulator 440.Then, the output of the homophase of modulator 440 (I) and quadrature (Q) is respectively by channel gain element 445 and 450 control that gains.Then, utilize FDMA, CDMA, TDMA, OFDMA or its combination to carry out multiplexing to channel gain element 445 and 450 composite signal and other channels of exporting by channel multiplexer 455.

In order to set up the SSA group, the channel id of the quantity of the shared resource in the quantity that the SSA that layer 3 information broadcast are being set up with indication to the user organizes, each SSA group and the correspondence of each shared resource in each SSA group.This layer 3 message can be indicated the position of AI_SN indicating device in bitmap corresponding to each shared resource in each SSA group clearly.Perhaps can impliedly indicate the position of AI_SN indicating device in bitmap corresponding to each shared resource in each SSA group by the sequence of the shared resource that occurs in layer 3 message of setting up SSA group.

In order to indicate the H-ARQ state of each shared resource, the control channel shown in Fig. 9 sends the bitmap as the AI_SN indicating device of information payload.Wherein, the order that occurs with shared resource in setting up layer 3 message of SSA group of each bit in bitmap is corresponding to the AI_SN indicating device of a shared resource.Layer 3 message of this same SSA of foundation group also distribute a specific scrambler to this control channel, with type or the purpose of indicating this control channel, thereby make the user can correspondingly explain the meaning of this information payload.Wireless parameter such as the channel id of this control channel can be indicated by same layer 3 message, also can be by broadcast channel at the superframe preamble indicating.

In order to identify the purpose user of the subgroup bag that is sending, come this subgroup bag of scrambling with unique scrambler of this purpose user.The subgroup bag that each user comes the shared viscosity resource of descrambling by its distribution to receive with its unique scrambler.

Share the viscosity resource to sticky user in order to distribute, by the assignment messages of the transmission of the control channel shown in Fig. 9 as information payload.Assignment messages comprises purpose user's sign, lasting (or viscosity) bit (for example, being made as " 1 "), the channel id that belongs to the shared resource of distributing to this user and the additional bit of setting at least.When the user had correctly received the assignment messages that sends and this channel id belong in the shared resource that layer 3 message have set up one in the SSA group together with continuing (or viscosity) bit, this user knew, it has been given shared sticky assignment.This user's expectation is shared this resource with more users.And this user will monitor corresponding AI_SN bit.For more shared resources being added the user who has distributed at least one shared viscosity resource to, the additional bit (for example, being made as " 1 ") in assignment messages is set.For provisionally shared sticky assignment of resources to non-sticky users, the lasting bit (for example, being made as " 0 ") in assignment messages is not set.For the distribution of the combined pipe of a plurality of shared resources being limited to a sticky user, such as the user 350 in the example in Fig. 8, channel id in assignment messages should be the father's channel id corresponding to the combination shared resource, and lasting bit should be set (for example, be made as " 1 "), replenish bit and depend on except at least one different shared resource, whether also distributed combined resource.

By allowing a plurality of users to share a plurality of shared resources (or pipeline), for example M user shares N pipeline, and wherein M and N are the integer more than or equal to 1, and in the present invention, disclosed method provides the thinner granularity that is used in a plurality of shared among users resources.And in disclosed technology before, N is always 1.Therefore, in the present invention, disclosed method makes system can increase gradually shared ratio, and obtain system effectiveness and the QoS that guarantees between appropriate balance.

Because access is shared the higher priority of pipeline and distributed to the user's that the delay sensitive type uses one of them more early availability of a plurality of shared pipeline, in the present invention, disclosed method provides shorter queuing delay for these users, thereby better QoS is provided.

In the present invention disclosed method can but be not limited to be applied to adopt the wireless communication system of the combination of following principle of multiplexing or following principle of multiplexing: resource frequency division multiple access (FDMA), wherein resource refers to the frequency chunks on interval sometime; Time division multiple access (TDMA), wherein resource refers to the time interval; Code division multiple access (CDMA), wherein resource refers to quadrature or the pseudo-orthogonal coding on interval sometime; OFDM access (OFDMA), wherein resource refers to the frequency sub-carrier of the quadrature on interval sometime.

The invention provides the new method that a kind of voice user of making and data user share identical running time-frequency resource, more effectively utilizing the less radio-frequency resource, thereby improve the performance of wireless system.It should be understood, however, that following disclosing provides many different embodiment or the example that is used for realizing different technologies feature of the present invention.The following describes the concrete example of assembly, signal, message, agreement and distribution, to simplify the disclosure.Certainly, these are only example, but not are used for the scope that restriction claim of the present invention is protected.In order to prevent that unnecessary details from making the present invention become unclear, do not explain detailedly for the known elements that provides.A lot of details unnecessary concerning understanding the present invention fully all within those skilled in the art's skill, therefore, have been omitted such details to a great extent.Here the control circuit of explanation is all within those skilled in the art's skill, thereby, omitted the details about these control circuits.

According to an aspect of the present invention, the base station sends the vertical message of establishment and begins the foundation group, and the user is joined in group.Parameter with a cover group and user's special use is come definitions section, such as, group ID, resource location, voip user's quantity, data user's quantity, bitmap lengths etc.The vertical message of establishment in table 1 is sent to each voip user, and the vertical message of the establishment in table 2 is sent to each data user.As the example of the overhead requirements that minimizes the MCS indication, based on data user's channel situation arranges 4 MCS index (Mod_Coding_1, Mod_Coding_2, Mod_Coding_3 and Mod_Coding_4) in the vertical message of this user's establishment.Thereby, only need 2 MCS index that bit is indicated described data user clearly.Can be by top signaling mapping from described bit to actual MCS based on long term channel and/or power availability adjustment.

Table 2: message is found in data user's establishment

Figure 10 A illustrates an example of the individual voice user of bitmap signal multiplex many (N) that utilizes expansion and many (M) individual data user's new method.Although these voice users have higher service priority,, if there is any surplus resources, these surplus resources can be divided into and allows maximum K the K that the data user transmits simultaneously (the individual data pipeline of K＜M).According to VoIP bitmap 1000, increase data bit Figure 100 5 and indicate grouping bag transfer of data.Bitmap 21010 is optional, provides extraneous information to indicate number and/or the grouping packet format of the piece that distributes to the voip user.The scheduler at AN place determines for which data user serve, distributed how many resources, use which MCS, QoS demand and buffer state etc. based on channel quality.Data bit Figure 100 5 generally includes K-1 corresponding MCS of data pipeline of data bit figure header 1015, beginning and the MCS field 1025 of resource size field 1020 and last pipeline.The data user of each activation will consider the user in its front (comprising voice user and data user) on bitmap, calculates shared piece, and locates the current piece accurately of distributing to this data user.Due to the size of having notified each user's total resources, thus the size of last data pipe can be calculated at an easy rate, and also last pipeline only needs MCS field 1025.The block size of coding depends on the size of Resources allocation and the MCS scheme of using.If information bit is less than the size of coding groups bag, may also need to fill so.The scheduler equilibrium criterion user's at AN place power and MCS.Can adjust mapping from the MCS bit to the actual packet packet format by top signaling.All equal an example of 1 as M and K, the data bitmap will reduce to only 1025, does not need 1015 and 1020.Under this scene, keep a MCS value, for example ' 00 ', indicate re-transmission, and the arrival of the new grouping bag of other value indication except ' 00 '.Described data user will consider all activated voice user on bitmap, sign is distributed to these voice users' Resource Block, and deletion is distributed to these voice users' Resource Block to locate the current rest block of distributing to described data user from whole Resource Block of distributing to this group.If determine not from voip user's surplus resources according to bitmap, ignore so the MCS index value.

The AI_SN bit of each data pipe in the data bit figure header that utilizes shown in 230 has been shown in Figure 10 B, and multiplexing many (N) individual voice user and many (M) individual data user are with the pattern 1 of the data bit figure header of shared identical running time-frequency resource.Suppose to have K data pipeline, the length of data bit figure header is the K bit.By indicating device is wrapped in new grouping, namely as illustrated AI_SN in [0016], be set to ' 1 ' or ' 0 ', or by switch the bag indicating device that should newly divide into groups between " 1 " and " 0 ", to utilize the beginning of grouping bag new in this new grouping bag indicating device designation data pipeline.In case indicated new H-ARQ grouping bag, the data user in all this groups just attempts this grouping of blind Detecting and wraps, and still, only has the dispatched users in this data pipe just can be successful.This be because with this user's special MAC ID scrambling this grouping wrap.In case the switching of AI_SN detected, described receiver will be removed the H-ARQ buffering area at receiver place and restart to attempt decoding.Otherwise it will attempt the symbol that receives and the symbol that had before received are carried out soft merging, wherein, and this symbol that had before received was stored in buffering area before attempting this grouping bag of decoding in.In the number K of data pipe equals 1 example, only stay next AI_SN in 230, and do not need 1020 in Figure 10 A.If determine that according to bitmap previous user does not have surplus resources, ignores the MCS index value so.

The user index of each data pipe in the data bit figure header that utilizes shown in 235 has been shown in Figure 10 C, and multiplexing many (N) individual voice user and many (M) individual data user are with the pattern 2 of the data bit figure header of shared identical running time-frequency resource.Supposing has L bit (supporting at most M=2^L data user) in index, the length of data bit figure header becomes L * K bit.In the present embodiment, the MCS field in 1020 and 1025 in all Figure 10 A all needs to keep a value, and for example ' 000 ', indicate the re-transmission of grouping bag, all other values are the transmission of the new grouping bag of indication.In the number K of data pipe equals 1 example, only stay next user index field in 235, and do not need 1020 in Figure 10 A.As the number K of the data pipe in group during less than data user's number M, preferred this pattern.In the number K of data pipe equals 1 example, only stay next index field in 230, and do not need 1020 in Figure 10 A.If determine that according to bitmap previous user does not have surplus resources, ignores the MCS index value so.

Bitmap in the data bit figure header that utilizes shown in 240 has been shown in Figure 10 D, and multiplexing many (N) individual voice user and many (M) individual data user are with the mode 3 of the data bit figure header of shared identical running time-frequency resource.More particularly, each data user represents it is to have distributed data pipe to transmit to this corresponding user (' 1 ') no (' 0 ') at the place, fixed position with 1 bit.Suppose to have in group M data user, the length of data bit figure header is M.In the present embodiment, the MCS field in 1020 and 1025 in all Figure 10 A all needs to keep a value, and for example ' 000 ', indicate the re-transmission of grouping bag, all other values are the transmission of the new grouping bag of indication.When the number K of data pipe in group and data user's number M near the time, preferred this pattern.If the voip user does not have surplus resources, the data bitmap will all be set as 0.In all above-described embodiments, for the voip user, bitmap 2 is all optional.The data user is not in the situation that have bitmap 2 can work yet.

Data bit figure header also can mix user's index, bitmap indication and AI_SN and indicate excited users.

Re-transmission for the packet bag has several different methods.A kind of method is the re-transmission that postpones simply the subgroup bag, until that resource becomes is available.Another kind method is to utilize adaptive retransmission, namely cuts apart the subgroup bag to adapt to the size for the surplus resources that retransmits.Another kind of more positive method is to allow AN to be preserved for retransmitting the required resource of any subgroup bag in group, until confirm this subgroup bag or reach maximum retransmission.But this method may affect voip user's transmission slightly.Also having a kind of is can utilize forward link shared control channel F-SCCH to dispatch any available resources that do not kept by other group to retransmit to be used for the subgroup bag.

In the above-described embodiments, the data user can also be the member of a plurality of groups.This data user will receive the vertical message of a plurality of establishments, and must monitor a plurality of bitmaps from AN.For instance, at a certain frame, AN just one group of described user of activation in these groups comes the transmission of data.Described data user has larger resource pool to use, and this will bring higher junction efficiency.In addition, because AN can utilize surplus resources and/or the voip user be carried out complicated scheduling come that any available resources in any group are distributed to the activation data user and retransmit being used for, so this also will bring the less restriction to the re-transmission of subgroup bag.If ability allows, the user also can serve simultaneously by a plurality of groups.If run through the grouping bag that all group resources only have a coding, an ACK/NAK is just enough so, otherwise, just need a plurality of ACK/NAK.

In order further to alleviate retransmitting the restriction of resource, can control to determine a termination more Zao than default value with power, in order to can reduce number of retransmissions.

Provided the ACK/NACK channel design in the example (Fig. 2) of a shared resource that is formed by 2 frames.Supposing has N voip user and M data user, and based on the position of voip user in the first bitmap, the voip user being indexed is 1,2, ..., N is after M data user is connected on voip user in the first bitmap, sequentially index and be N+1, N+2 ..., N+M.Based on the index of AT, these AT are distributed in the ACK position.For example, distribute N/2 VoIP AT of beginning and M/2 data AT to send its ACK in an ACK position, and distribution N/2 VoIP AT and M/2 data AT thereafter send its ACK second ACK position.Similarly, can use even/strange structure, whereby, distribute AT with strange index to send its ACK in an ACK position, and distribute AT with even index to send its ACK in the 2nd ACK position.

With accomplished in many ways, message (for example, group management information) is broadcast to all users in group.In an example, an extra bit is added to represent in bitmap that whether this surplus resources is used for broadcasting.Again for example, when the usage data user index, can keep a value (if use 3 bits, for example ' 111 ') and indicate the broadcast message in surplus resources.In another example, can indicate broadcasting transmitting in surplus resources with F_SCCH, or other outer resource of group.In the end in example, AT can transmit the broadcast packet with the GroupID scrambling, and allows the AT in this group come these groupings of blind Detecting to wrap.

Can be summarised as two kinds of user types to the voip user in the present invention and data user, the user of the first kind has higher priority to for example delay sensitive type business, and the user of Second Type has lower priority to the insensitive business of for example time delay.At this moment, still can use said method.

But, in the situation that do not depart from spirit of the present invention, can there be other that method of the value of reservation bit is set, this it will be apparent to those skilled in the art that.

Although in above-mentioned each example, be all that the base station sends message and the travelling carriage receipt message, the present invention also can be used for being sent by arbitrary communication terminal and using these new methods by the message that arbitrary other communication terminal receives.

Be used for realization or execution various illustrative boxes, module and the circuit relevant with disclosed embodiment and can be but be not limited to general processor, digital signal processor (DSP), application-specific integrated circuit (ASIC) (ASIC), the memory device such as RAM, ROM, EPROM or EEPROM, field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware component, and the above-mentioned combination in any for realizing that institute's representation function here designs.

The invention provides and be supported in the unique method of sharing Radio Resource in ofdma communication system.It should be understood, however, that following disclosing provides many different embodiment or the example that is used for realizing different technologies feature of the present invention.The instantiation of assembly, signal, message, agreement and distribution hereinafter has been described, to simplify the disclosure.Certainly, these are only example, but not have a mind to limit the scope that claim of the present invention is protected.In order to prevent that unnecessary details from making the present invention become unclear, do not explain detailedly the known elements that provides.A lot of details unnecessary concerning understanding the present invention fully all within those skilled in the art's skill, therefore, have been omitted such details to a great extent.Control circuit described herein all within those skilled in the art's skill, thereby, omitted the details about these control circuits.

According to an aspect of the present invention, control 1 with bitmap and come the Control and Schedule group.Bitmap is controlled 2 and not only is used for the running time-frequency resource that expression is used by the dispatch group travelling carriage, also be used for signaling and carry out the shared resource of other dispatch group of dispatch group resource-sharing with the current scheduling group, perhaps also be used to indicate the available surplus resources that can be used by the shared group travelling carriage.By with bitmap 1 in excited users do not have related bit to realize the resource that signaling is used by other dispatch group.Further, realize signaling in bitmap 2 by the clear and definite mapping one to one of resource of using with other dispatch group.This resource of in bitmap 21 indication is just used by other dispatch group.Lift an illustrative examples, consider Figure 11, the running time-frequency resource of the running time-frequency resource of the dispatch group A shown in it and dispatch group B is fully overlapping.In the case, dispatch group is shared 10 running time-frequency resources.Further, in this illustrative example, 1 in bitmap 2 expression is associated with this excited users by 2 running time-frequency resources, 1 expression have a running time-frequency resource to be associated with this excited users.Should also be noted that to be, dispatch group A is with ascending order mode Resources allocation, and dispatch group B is with descending mode Resources allocation.Bitmap 1 instruct MS 3 and MS2 in dispatch group A activate.Bitmap 2 indication running time-frequency resources 1 in dispatch group A have been distributed to MS3 and running time-frequency resource 2 and 3 has been distributed to MS2.Now, use with excited users and do not have the explanation of other bit in related bitmap 2 to indicate running time-frequency resource whether to be used by other dispatch group.In this illustrative example, the bitmap 2 of dispatch group A illustrates, and running time-frequency resource 9 and 10 has been used by other dispatch group.Therefore, the travelling carriage in the shared group of the surplus resources of shared dispatch group A just can be known by bitmap 1 and the bitmap 2 of checking dispatch group A, running time-frequency resource 1,2,3,9 and 10 has been used, and running time-frequency resource 4,5,6,7 and 8 is their spendable surplus resources.

In order to be interpreted as that what is expressed as the group B that is scheduled to running time- frequency resource 9 and 10 and has used, and also shows the bitmap of dispatch group B in Figure 11.In the case, bitmap 1 illustrates MS7 and activates, and bitmap 2 illustrates 2 time-frequency resource allocating to MS7.Remember that dispatch group B adopts the descending mode to come Resources allocation, so very clear, resource 9 and 10 has been distributed to MS7.Do not have other bit of related bitmap 2 to show that 3 running time-frequency resources of beginning group A that is scheduled has used with excited users in dispatch group B Fig. 1 in place yet.The correspondence of the running time-frequency resource that now, uses in bitmap 2 is just very clear.In the resource sequencing model of other dispatch group, last bit of bitmap 2 is corresponding to the running time-frequency resource of the first running time-frequency resource, and bit second from the bottom is corresponding to the running time-frequency resource of the second running time-frequency resource, etc.

Although in illustrative example shown in Figure 11, the running time-frequency resource of two dispatch group is fully overlapping.All right direct expansion to the situation of overlapping, as shown in Figure 12.In this illustrative example, identical in the foundation of dispatch group A and dispatch group B and Figure 11, but dispatch group A is using running time-frequency resource 1 to 10, and dispatch group A uses scheduling resource 3 to 11.Can see from the bitmap 2 of dispatch group A, the travelling carriage in dispatch group A has used running time-frequency resource 1,2 and 3, and dispatch group B has used running time-frequency resource 10.The bitmap 2 of dispatch group B illustrates scheduling resource 10 and 11 and has distributed to MS7, and dispatch group A has used running time-frequency resource 3.Thereby the travelling carriage in the shared group at dispatch group A place can be known, can share idle running time-frequency resource 4,5,6,7,8 and 9.It is now just very clear: if a plurality of dispatch group is shared X running time-frequency resource, and one of them dispatch group is being dispatched running time-frequency resource O to P, so, being mapped as of the bit that is not associated with excited users in control bit Fig. 1 and the bit in this dispatch group Fig. 2 in place: whether last bit indexed resource P-X of bitmap 2 has been used by other dispatch group, whether the penultimate bit indexed resource P-X+1 of bitmap 2 has been used by other dispatch group, whether the bit indexed resource P-X+2 third from the bottom of bitmap 2 has been used by other dispatch group, etc.

According to still another embodiment of the invention, the size of the running time-frequency resource of the travelling carriage of the shared group in the bit that the number by conclusivelying show idle running time-frequency resource or base station are wanted to distribute in bitmap 2 not with the excited users of bitmap 1 is associated is come the idle running time-frequency resource of signaling.Due to the line of demarcation that can obtain from the bit that is associated with excited users bitmap 1 between occupied running time-frequency resource and idle running time-frequency resource, so just can represent whole idle running time-frequency resource in the situation that line of demarcation and length are known.

According to another invention of the present invention, control 2 with bitmap and come the Control and Schedule group.In this control mode, bitmap 2 not only is used for the running time-frequency resource that expression dispatch group travelling carriage uses, and carries out the shared resource of other dispatch group of dispatch group resource-sharing with the current scheduling group but also be used for signaling.In the case, clear and definite man-to-man mapping relations are arranged between the bit in bitmap 2 and running time-frequency resource.In the case, in interval sometime, when running time-frequency resource can not be used for the initial transmission of grouping bag, bitmap was with all surplus resources of 1 those running time-frequency resources that come signaling to comprise to be used by other dispatch group.Lift an illustrative examples, consider Figure 13, wherein show the running time-frequency resource of dispatch group A and dispatch group B.In the case, dispatch group A is dispatching running time-frequency resource 1 to 10, and dispatch group B is dispatching running time-frequency resource 3 to 11.Bitmap 1 instruct MS 3 and MS2 in dispatch group A have a new packet transmissions.Bitmap 2 indication running time-frequency resources 0 in dispatch group A have been distributed to MS3 and running time-frequency resource 4 has been distributed to MS2.Now, use with excited users and do not have the explanation of other bit in related bitmap 2 to indicate running time-frequency resource whether to be used by other dispatch group.In this illustrative example, the bitmap 2 of dispatch group A shows that running time-frequency resource 10 has been used by other dispatch group.Therefore, the travelling carriage in the shared group of the surplus resources of shared dispatch group A just can be known by bitmap 1 and the bitmap 2 of checking dispatch group A, running time-frequency resource 1,2,3,4 and 10 has been used, and running time-frequency resource 5,6,7,8 and 9 is their spendable surplus resources.

Check the bitmap 1 of the dispatch group B in Figure 13 as can be known, MS7 is scheduled to send new bag.MS7 will check that the concurrent current frequency resource 10 of the bitmap 2 of dispatch group B distributed to it.Except the running time-frequency resource that the dispatch group A that indicates uses, running time- frequency resource 3 and 4 also will be shown as and be used.Therefore, a part of travelling carriage of sharing in the shared group of surplus resources of dispatch group B will know, running time- frequency resource 3,4,10 and 11 occupied, and running time- frequency resource 5,6,7,8,9 and 10 is idle sharable.

In another embodiment of the present invention, the travelling carriage in the shared group of dispatch group A detects from all and this dispatch group and shares a part of their all bitmaps of dispatch group of scheduling running time-frequency resource.This travelling carriage can be determined the idling-resource that is not used accordingly.

In order to make those skilled in the art can understand or use the present invention, more than provided the detailed description of disclosed embodiment of the present invention.Those skilled in the art are easy to these embodiment are made multiple change, and General Principle described here is applicable to be included in other embodiment within spirit of the present invention and protection range.Therefore, protection scope of the present invention is not limited only to described embodiment, but comprises that all meet the widest protection range of principle of the present invention and new feature.

Claims (20)

1. a method of sharing Radio Resource in OFDM (OFDMA) communication system, is characterized in that, described ofdma communication system comprises transmitter, the first receiver and the second receiver, said method comprising the steps of:

But provide a plurality of distributing radio resource;

For each receiver is specified unique scrambler;

The grouping bag is provided;

Define a plurality of subgroup bags of this grouping bag;

But select this first receiver or the second receiver to receive this grouping bag by the first distributing radio resource; And,

Utilize selected this first receiver or the second receiver scrambler separately to carry out scrambling to the data field of described a plurality of subgroup bags processes at the transmitter place;

At each receiver place, with each receiver separately unique scrambler the subgroup bag that receives is carried out scramble process, if the subgroup bag is to come scrambling with unique scrambler of distributing to this receiver, so, grouping bag after descrambling is the Correct of original packet bag or subgroup bag, if the scrambler of receiver is to be used for the scrambler of coding groups bag different, the grouping bag after descrambling is useless.

2. method according to claim 1, is characterized in that, but this transmitter is distributed to this first receiver with continuous fashion with this first distributing radio resource.

3. method according to claim 2, is characterized in that, but this transmitter is further distributed to this second receiver with continuous fashion with this first distributing radio resource.

4. method according to claim 2, is characterized in that, but this transmitter is further distributed to this second receiver with non-continuous fashion with this first distributing radio resource.

5. method according to claim 2, is characterized in that, and is further comprising the steps:

In each receiver place, the processing of decoding;

At each receiver place, carry out cyclic redundancy check (CRC);

If the cyclic redundancy check (CRC) of a receiver is sure, this receiver sends and confirms so; And

If the cyclic redundancy check (CRC) of a receiver negates that this receiver sends the confirmation negating so.

6. method according to claim 5, is characterized in that, sends clearly confirmation with logical keying, and impliedly send Negative Acknowledgement with the scission of link control.

7. method according to claim 5, is characterized in that, and is further comprising the steps:

The notice that this transmitter will send new grouping bag offers receiver;

The place provides the detection buffering area at this receiver;

If the place detects the notice that sends new grouping bag at this receiver, before to the decoding of grouping bag, remove this detection buffering area so;

If this receiver detects the notice that sends new grouping bag, so before to the decoding of grouping bag, the subgroup bag of the descrambling of storing in the subgroup bag of the current descrambling of soft merging and this detection buffering area;

Detect data in the subgroup bag, if cyclic redundancy check (CRC) negates so the subgroup bag after soft merging to be stored in this detection buffering area.

8. method according to claim 7, is characterized in that, the notice that sends new grouping bag further comprises: send index signal by signaling channel, described signaling channel is independent of the channel of the described grouping bag of carrying.

9. method according to claim 7, is characterized in that, the notice that sends new grouping bag further comprises: provide index signal in the header of each subgroup bag.

10. method according to claim 7, is characterized in that, this transmitter provides the notice that sends new grouping bag with Walsh Walsh code.

11. method according to claim 10, it is characterized in that, the notice that sends new grouping bag further comprises: begin by the new packet transmissions of the indication of the switching between signaling the one Walsh code and the 2nd Walsh code, a described Walsh code and the 2nd Walsh code belong to respectively mutually exclusive Walsh numeral collection.

12. method according to claim 11 is characterized in that, this transmitter further uses the Walsh code that is different from a Walsh code or the 2nd Walsh code that information is sent to receiver clearly.

13. method according to claim 12 is characterized in that, this information comprises modulation and the encoding scheme of data field.

14. method according to claim 12 is characterized in that, this information comprises the size of Multi-encoder grouping bag.

15. method according to claim 12 is characterized in that, this information comprises subgroup bag index.

16. share the system of Radio Resource in an ofdma communication system, it is characterized in that, comprising:

Transmitter is used for sending by the first Radio Resource a plurality of subgroup bags that form the grouping bag;

The first receiver and the second receiver are used for receiving described a plurality of subgroup bags by this first Radio Resource from this transmitter;

Wherein this transmitter comes the data field of the subgroup bag in the described a plurality of subgroup bags of scrambling with unique scrambler related with this first receiver or the second receiver; And

Each receiver comes subgroup bag in the described a plurality of subgroup bags of descrambling with separately unique scrambler; If the grouping bag is to come scrambling with unique scrambler of distributing to this receiver, so, grouping bag after descrambling is the Correct of original packet bag or subgroup bag, if the scrambler of receiver to be used for the scrambler of coding groups bag different, the grouping bag after descrambling is useless.

17. system according to claim 16 is characterized in that, each receiver carries out the validity that cyclic redundancy check (CRC) is verified this subgroup bag.

18. system according to claim 17 is characterized in that, each receiver checks that the header of this subgroup bag is to determine whether this subgroup bag sends to this first receiver.

19. system according to claim 17 is characterized in that, each receiver checks that indicating device clear and definite in one other channel is to determine whether this subgroup bag sends to this first receiver.

20. system according to claim 16 is characterized in that, each receiver carries out following operation: if its cyclic redundancy check (CRC) is sure, sends so and confirm; If its cyclic redundancy check (CRC) negates to send so the confirmation negating.

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