CN101395831A - 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 the wireless communication system

Technical field

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

Background technology

In wireless multiple-access communication system, all interior wireless users of specific cell share radio traffic channel resource (for example, the bandwidth and the time interval).Because effective distribution of traffic channel resource directly affects the integral body utilization of traffic channel resource and the service quality that each wireless user is experienced between each wireless user, 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: between each user, cut apart time division multiple access (TDMA) technology of wireless communication resources and cut apart code division multiple access (CDMA) technology of wireless communication resources according to spreading code according to the time.

OFDM can carry a part of user data respectively 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 that 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, increased following the maximum amount of data that can communicate by letter of given allocated bandwidth compared with other FDM technology.

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 multi-user inserts environment.This just allows a plurality of users to transmit and receive data simultaneously, and is unlike in such etc. " time slot " to be allocated in the tdma system.The more important thing is, can distribute to those to its bandwidth accounts for larger proportion in total available bandwidth a plurality of frequency sub-carrier and require user than the great share bandwidth resources.When a plurality of users adopted this mode shared bandwidth, system was commonly referred to as OFDM and inserts 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 usually by the control of medium access control (MAC) layer.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 allocation was commonly referred to as sticky assignment or continues and distributes.Similarly, being commonly referred to as non-sticky in a grouping bag of transmission back with regard to the distribution that stops 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 using system resource is not all to be desirable in all cases.The minimum quality of service that sticky assignment usually can guarantee the specific user is set.When realizing that ip voice (VoIP) is used, can use sticky assignment.In these cases, when a large number of users was given in resource allocation, sticky assignment had reduced communication delay.Yet the user often can not make full use 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, the utilization of the resource that maximization distributes sticky assignment under the situation of not introducing excess overhead or essence complexity 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 the Cyclic Redundancy Check of the packet bag that receives was failed, receiver added (can not be decoded) packet bag to detection buffering area (being positioned at the receiver place).In the H-ARQ system, transmit unacknowledged grouping bag again, and use the data that are stored in the detection buffering area to construct the grouping bag of transmission again.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, so just determined the accuracy of data configuration next by cyclic redundancy check (CRC) to this grouping bag.

In the system that uses H-ARQ, regularly clear buffer is to keep superperformance very crucial.Specifically, mix with the information that plan sends to the another one user, so just may detect the misuse of buffering area if plan sends to a user's information.Give in a user's the system in each grouping bag plan, 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 one user be under purpose user's the situation having, and the method for optimizing the new H-ARQ sequence of indication in the system that uses son grouping bag will be comparatively favourable.In such system, indicate new H-ARQ sequence to give 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 that multiple access inserts.In traditional OFDMA data sending apparatus, a kind of frequency division and method of time-division of realizing proposed when carrying out the multiple access access.And, also consider on frequency direction and time orientation, to realize diversity, make that improving error correcting capability becomes possibility.

OFDM has showed different design methods.Cut apart the combination that this channel can be counted as modulation and multiple access method in a kind of mode that makes a lot of users can share a communication channel.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 be 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 to be called the system that OFDM inserts (OFDMA).When the user has information to send, can distribute the tone of predetermined number for it; Perhaps, alternately, can distribute the tone of variable number for the user according to the amount of information that the user will send.This distributes by medium access control (MAC) the layer control that distributes according to the user's request scheduling resource.

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 the dispatch group.Each dispatch group is shared a public running time-frequency resource set.Utilize the bitmap signaling to control effectively time-frequency resource allocating to each the user's travelling carriage in the dispatch group.

In bitmap control 1, use two bitmaps to come Control Allocation to give each user's running time-frequency resource.First bitmap is called bitmap 1, is used for receiving service at every which travelling carriage of frame indication.Each bit position of bitmap 1 is corresponding to a travelling carriage in the dispatch group.If the corresponding bit of a travelling carriage is set as 1, this travelling carriage is in state of activation so, is promptly sending data.If the corresponding bit of a travelling carriage is set as 0, this travelling carriage is in unactivated state so, does not promptly 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.First bit of bitmap 2 is corresponding to first is in user's (being called excited users 1) of state of activation in the bitmap 1, 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, or the like.Running time-frequency resource is distributed to excited users 1 continuously to a last excited users.In the bitmap 21 expression distributes M running time-frequency resource, and 0 expression distributes N running time-frequency resource.

In bitmap control 2, first bitmap is called bitmap 1, is used in reference to be shown in this time interval, and which travelling carriage in the dispatch group will send new grouping bag.Each bit in the bitmap 1 is associated with a travelling carriage in the dispatch group.This travelling carriage of in the bitmap 11 expression will send new grouping bag, and 0 represents that then this travelling carriage does not have new grouping bag to send.The travelling carriage that is associated with first bit in the bitmap 1 is called new grouping bag travelling carriage 1, and second bit in the bitmap 1 is called new grouping bag travelling carriage 2, or the like.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 the bitmap 21 expression, 0 then 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, or the like.

Yet for the signaling of the size that minimizes the running time-frequency resource common set that changes dispatch group, the user in the 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 with dispatch group to use dispatch group not have the surplus resources that uses.

Further, it should be noted that a plurality of groups running time-frequency resource 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 that 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, current handle can be for the mechanism of shared group by the resources shared signaling: by control channel this resource of signaling clearly.This method expense is very big.The present invention will describe in detail a kind of under the shared situation of scheduling resource group, under the situation that increases minimum or zero signaling consumption, give the method for shared group untapped resource by having bitmap signaling signaling now.

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

The base station can transmit a grouping bag for resource allocation specific travelling carriage, or uses in the limited time interval.This resource allocation is called non-continuing or the non-sticky distribution.The base station can also transmit more than one grouping bag for resource allocation specific travelling carriage, up to triggering the action that a cancellation distributes this resource.The action of cancellation Resources allocation can but be not limited to expire or the packet loss that divides into groups triggers by clear and definite cancellation assignment messages, default timer.This resource allocation 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 multiple former thereby the situation that resource is not used takes place.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 takes place,, thereby remain on the state of not being used with the resource that the sticky assignment mode is distributed to this user because this user will wait for the arrival of next VoIP grouping bag.

Sharing sticky assignment (SSA) is a kind of Radio Resource share technique enough in time that makes, 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, for each user distributes a unique identification that is called MAC index (MACID).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 uses the purpose user's of the data sub-packet bag behind the coding scrambler to come scrambling the son grouping to wrap.The data sub-packet bag that user's receiver comes descrambling to receive with the scrambler of distributing to this user.If the son that receives grouping bag 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 son grouping bag of can correctly decoding.On the other hand, if the son that receives grouping is wrapped not to a certain specific user, the descrambling process no longer is 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, with before data grouping bag is correctly decoded, may send with the form of son grouping bag more than this grouping wraps once in the enough energy of accumulation and coded identification.Therefore, even this grouping bag is not correctly decoded, receiver also detects in the buffering area the symbol of the son grouping bag that receives is added to, so that the symbol of the son that these can be received grouping bag carries out soft merging with the symbol that obtains from the transmission of next height grouping bag.If plan sends to a user's symbol and mixes with the symbol that plan sends to another user, may detect the misuse of buffering area so, promptly produce grievous injury to detecting performance.For fear of the misuse that buffering area takes place 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 previous son grouping bag of failing, this signal rests on previous state.This AI_SN indicating device can be carried in the header field of son grouping bag, perhaps is carried in the independent signaling channel.

As the example that provides among 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 type of doing one's best (BE) data user 140 shared same resources 110 of having carried out with viscosity or non-sticky distributing and current BE user 140 because of 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 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 is formed 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.

Though 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 of coexistence for indispensable the 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 made up of bigger inactivity minute section.Need weave into group to the voice user of some, and distribute a shared running time-frequency resource set.Between the group membership, realize statistical multiplexing gain.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 by premature termination H-ARQ to be realized.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, promptly the MAC index associated with this GroupID AN by the upright message (Group Setup Message) of the establishment in the table 1.Go up the top signaling of carrying by forward link data channel (F-DCH) and manage described message.

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

Set up upright message and also define the accurate position 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).

In group, be unique ranking index of each AT distribution, and a fixedly interlace offset that is used in its superframe that sends son grouping bag for the first time.The time that Here it is between continuous first time will being sent be adjusted into 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 son grouping bag and follow-up re-transmission.

The length of first bitmap (bitmap 1) is the number of user in the group.First bitmap is used at which AT of each VoIP frame indication just serviced.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.Second bitmap (bitmap 2) can be used to refer to the number and/or the grouping packet format of the piece that is distributed.

Each AT determines its distribution based on all have the AT of less bit map location in first bitmap distribution.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 to determine its distribution based on the 0th position in first bitmap.Having ' 1 ' AT in 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 have only first bitmap, M is identical with N so, if two bitmaps are arranged, M can be different with N so.Have the primary importance in corresponding second bitmap of first user of ' 1 ' in first bitmap, have in first bitmap second place in second ' 1 ' corresponding second bitmap of user, or the like.

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

For the influence of the detection mistake that minimizes new H-ARQ sequence indicating device, indicate 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 previous son grouping bag of failing, AI_SN rests on same state.Specifically, transmitter sends same indicating device in each son grouping 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 sub-packet transmissions, 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 the previous sub-packet transmissions.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 the desired VoIP time delay and the performance requirement of the carefully compromise running time-frequency resource set that is distributed.In order to ensure desired properties, may be required in the most of the time, surplus resources is all arranged in the group.Because voice user and data user also deposit, thereby, in group, also comprise data user's (type of for example doing one's best business) of certain type, and the way that makes the data user be used for packet data transmission to surplus resources is very helpful with the voip user.

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 multiple mode 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 feature clearer.

Summarized the even more important feature of the present invention widely,, and be familiar with the present invention's contribution technically better so that can understand following detailed description of the present invention better.To illustrate also that hereinafter the present invention constitutes 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 the 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 and be used to limit the present invention.

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

The present invention is by providing the method and system that can make things convenient for 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 the user of delay sensitive type application simultaneously.

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 short 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, the higher chance of obtaining shared resource priority and more selection shared resource is arranged than time delay non-sensitive type user's new grouping.

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

Another purpose of the present invention provides a kind of multiplexed speech user with the data user and make them can share the method for identical running time-frequency resource, obtaining the more effective utilization to 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 bigger Resource Block (comparing with voice user's Resource Block), and keeps the priority of higher voice user's transmission simultaneously, serves the voice user better.

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

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

The invention provides and a kind ofly comprise that several different methods and device, a plurality of user share Radio Resource rather than resemble the system that allocation of radio resources is given the sticky assignment 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 the tone or the grouping pack arrangement of frequency sub-carrier.As disclosed, a grouping bag can be divided into a plurality of son grouping 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, especially disclose and utilized the divide into groups communication means that wraps of son with the base station that promotes improve and the method for communicating between a plurality of user.

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

According to another aspect of the present invention, disclose and a kind ofly be used for minimizing the signaling consumption of setting up described SSA group, add and the H-ARQ state of deletion user, the described shared resource of indication, and indicated the purpose user's of current transmission the method for identity in described SSA group.

According to an aspect of the present invention, a kind of being used for voice user and data user's marshalling disclosed, and make them can effectively share the new method of running time-frequency resource, this method comprises: send to each data user who distributes to group with user and group specific information setting up upright message (being different to the voice user's), and described user begins to monitor bitmap once receiving the upright 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 given them and/or distributed which modulation and the encoding scheme index; Based on data user's QoS demand, control 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 come information (for example organizing management information) is broadcast to all users in this group based on the GroupID of blind Detecting.

According to the of the present invention first preferential embodiment, the transmission of the individual voice user of bitmap signal multiplex many (N) by using expansion and many (M) individual data user's transmission are with shared 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 maximum K the K that the data user sends data pipelines simultaneously.Follow the VoIP bitmap, add the data bitmap and indicate grouping bag transfer of data.Which modulation and encoding scheme (MCS) are served and used to scheduler at the AN place for which data user based on decisions such as channel quality, QoS demand and buffering zone states.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 the bitmap, calculates shared piece, and locatees the current piece accurately of distributing to this data user.The size of coding groups bag depends on the size and the employed MCS scheme of surplus resources.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 the mapping from the MCS bit to the actual packet form by the top signaling adjustment.

A variant according to a first advantageous embodiment of the invention utilizes the AI_SN bit of each data pipe in the data bit figure header, and many (N) individual voice user is organized into groups to share identical running time-frequency resource with many (M) individual data user.By a new grouping bag indicating device, illustrated AI_SN just as in [0016] is set to ' 1 ' or ' 0 ' or should new grouping bag indicating device by switching, 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, has only 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 the MCS value, for example ' 000 ', indicate the re-transmission of grouping bag, the then new grouping of the indication transmission of wrapping of other value.

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

According to a further aspect in the invention, a kind of being used for voice user and data user's marshalling disclosed, and minimize the new method of grouping bag transfer of data to the VoIP Effect on Performance, this method comprises: the data user is distributed to a plurality of groups, so that described data user shares bigger resource pool, and seldom having an opportunity and the VoIP business clashes, is such when retransmitting especially.

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 the present invention, its service advantages and special purpose better by using it to reach, should be with reference to the accompanying drawings and the illustrative flesh and blood of 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 specification, all should be within the scope of the invention, and all should be subjected 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 in the multiple mode that the present invention can adopt a few.

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 the accompanying drawing is represented 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 wherein bitmap 1 expression is just receiving the voip user of service, optionally the size and/or the grouping packet format of bitmap 2 expression institute Resources allocation.Originally there is shown an example of group resource allocation.In this example, the shared resource of a VoIP frame of being made up of 8 DRCH resources (each DRCH is 16 tone * 8 symbols that are distributed in frequency domain) of each frame in two consecutive frames is gathered 24 AT that distribute in the group.

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

Fig. 4 is depicted as the example that a plurality of users carry out resource allocation.

Fig. 5 illustrates according to the exemplary transmission sequence in the 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 the example of expansion bitmap signaling with K data pipeline N voice user of marshalling and M data user.The data bitmap comprises data bit figure header, MCS and size field.The data user that the indication of data bit figure header activates; The corresponding MCS index of 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 the pattern 1 of data bit figure header that AI_SN that each data pipe uses 1 bit indicates the arrival of new son grouping bag.Suppose to have K data pipeline, then the length of data bit figure header is K bit.

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

Figure 10 D illustrate each data user with 1 bit represent be (' 1 ') not (' 0 ') distributed the mode 3 of data pipe for this corresponding user with the data bit figure header that transmits.Suppose to have in the group M data user, then 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 under the overlapping situation of the resource part of dispatch group, is used for an illustrative example of in bitmap control 1 signaling of the resource of indication shared group.

Figure 13 provides and is used for an illustrative example of in bitmap control 2 signaling of the resource of indication shared group.

Embodiment

For making those skilled in the art make and to use the present invention, provide following explanation.Under the situation of the spirit and scope of the present invention that do not deviate from here to be limited, except the embodiment of following detailed description with using, 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 and principle disclosed herein and the consistent maximum magnitude of feature.

Referring to Fig. 3, show the flow chart of in the OFDMA system, realizing the embodiment that Radio Resource is shared.In the embodiment show in figure 3, receiver receives the process of information from step 101 in system.In step 103, receiver waits for that new son grouping bag arrives.During step 103, receive after the son grouping 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 different ways.

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 son grouping bag will send to this specific user.According to this grouping pack arrangement, for each user in the system distributes unique scrambler.Can distribute this unique scrambler with different ways, comprise the method for other unique identifier that uses Mobile Station Identifier, MAC Address and specific user.Utilize this grouping pack arrangement, preferably, each sub bag that divides into groups is divided into header field and data field, can be responsible for assigning the subclass of grouping bag or sub the grouping or divide and task the specific user.In alternative embodiment of the present invention, bundle grouping bag is not divided into header field and data field.

When using scrambler impliedly to identify the purpose user of son grouping bag, transmitter comes the data field that scrambling should son grouping bag with unique scrambler of distributing to this purpose user, and the header field that scrambling should son grouping bag alternatively.Have only those reception users that have specific unique scrambler of this son grouping bag that is used for encoding this grouping of could decoding to wrap, 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 son grouping bag to send information clearly about the purpose user of grouping bag.

When the user received the grouping bag of specific scrambling, this user used its unique scrambler to go descrambling the grouping to wrap based on the method for scrambling of using in the system.If the grouping bag is to come scrambling with unique scrambler of distributing to this specific user, so, the grouping bag behind the descrambling is the correct expression of original packet bag or son grouping bag.If user's scrambler that is to say that with to be used for the scrambler of coding groups bag different this user is non-purpose user, so, concerning this non-purpose user, the grouping bag behind the descrambling is useless.Whether successful method is a kind of checking descrambling process: utilize this grouping bag self-contained, i.e. the value that sends in the header of bag or sub-grouping bag that divides into groups, or warp is the value of another signaling channel transmission optionally, carries out cyclic redundancy check (CRC).By determine grouping bag behind the descrambling or son grouping bag whether with original grouping bag or son grouping bag coupling, cyclic redundancy check (CRC) can verify that whether particular packet is the destination with this user.

Use in the realization of H-ARQ at some, whenever the Cyclic Redundancy Check failure of son grouping bag or grouping bag, receiver just adds the information that receives in the detection buffering area on the receiver to.As discussed herein, if maybe will send to another user's data grouping bag with another packet bag that will send to same subscriber and mix, may detect the buffering area misuse so will send to user's data grouping bag.For fear of misuse, embodiments of the invention provide a kind of host-host protocol that specific H-ARQ interweaves that is used for.Because the beginning of new H-ARQ signaling is to want the signaling receiver, more than design makes the H-ARQ sequence at receiver place will finish before the new sequence beginning.

Because the information that detects in the 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, in the header of grouping bag or son grouping bag, send the new H-ARQ sequence signal of indication clearly.In further embodiments, in such as the independent signaling channel of dedicated frequency subchannel, send the signal of the new H-ARQ sequence of indication.Therefore, can use multiple different Signalling method or structure to indicate new H-ARQ sequence.

Except indicating new H-ARQ sequence, some embodiment also minimizes the influence of the detection mistake of new H-ARQ sequence indicating device.In certain embodiments, indicate 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 grouping of the son in retransmitting previous H-ARQ sequence bag, this signal remains unchanged.Like this, each son grouping bag of same H-ARQ sequence just all uses same indicating device to transmit.Once you begin new H-ARQ sequence, indicating device just will be switched.In these embodiments, receiver can be by determining whether the indicating device that uses in the subsequent subpacket bag is different from the indicating device that uses in the last sub-packet transmissions 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, remove the H-ARQ buffering area at the receiver place.Otherwise, data sub-packet bag and the current data sub-packet bag of storing in the buffering area that receives carried out soft merging.No matter whether removed buffering area, in step 109, all in son grouping bag, detect data.In son grouping bag, detect the step that data can comprise descrambling grouping bag or parton grouping bag.In step 109, detect after the data, in step 111, carry out CRC, promptly this grouping bag self-contained in son grouping packet head or the crc value that in optional signaling channel, transmits with according to son grouping bag in the value that goes out of detected data computation compare.If the CRC failure, execution in step 115 so, the son of failure grouping bag is added to detect in the buffering area.As mentioned above, detect buffering area and allow the son grouping bag that retransmitted afterwards and the son grouping inclusion of failure are closed, thereby improve the possibility that makes up correct son grouping bag.In step 115 the son grouping bag of failure be added to detect in the buffering area after, can take OFF or the form that do not send is carried out NACK to transmitter.

If CRC passes through in the step 111, in step 113, receiver carries out ACK so, promptly confirms correctly to have received this grouping bag to transmitter.ACK need 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 this son that is not identified grouping bag.This process repeats limited number of attempt.Number of attempt depends on specific application.Send after the ACK in step 113, re-execute step 103, promptly receiver is waited for new grouping bag once more.

Be used for sending second row, the i.e. W that one of the indicating device of new H-ARQ sequence or H-ARQ indicating device can use quadravalence Walsh (Walsh) matrix ₁ ⁴Or " 0101 ".Other indicating device can use the fourth line of walsh matrix, i.e. W ₃ ⁴Or " 0110 ".Only use two walsh codes to indicate new H-ARQ sequence, therefore, can use remaining two walsh codes to come multiplexing out of Memory, such as, ID sent in the CDM mode.

Referring now to Fig. 4,, wherein shows an example that the invention provides resource allocation.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) then are used for sending data.This specific example also shows the header of son grouping bag and is made up 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 being distributed.The modulation format of new H-ARQ indicating device is independent of resource allocation, 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 son grouping bag) can have obvious increase than the power output of the data division of son grouping bag.In such embodiments, send new H-ARQ indicating device, can guarantee its reliability by higher-wattage.

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 hinted that by preferred (or " viscosity ") distribution 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 in assignment messages, share form by signaling.In such embodiments, there is no need to distribute for user's dispensing viscous of user's shared resource of having sticky assignment.Under the situation that does not deviate from spirit of the present invention, can use other multiple Signalling method to indicate employed shared form.

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 grouping of odd encoder device, or the modulation of data segment and encoding scheme (MCS).In such embodiments, the modulation that can fixed resource distributes, the perhaps modulation of indication or signaling resource allocation clearly in resource allocation.In another embodiment, MCS can dynamically change, and can come signaling MCS clearly by message in independent channel.In yet another embodiment, can come signaling MCS impliedly with receiver just at blind Detecting MCS.In addition, the size of encoder packet bag can be different.The resource that the speed matching method that can use perforation or repeat distributes to the size of different coding device grouping bag rate-matched.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 all are full rates.Receiver can carry out blind Detecting between different speed.In another embodiment, can indicate the size of encoder packet bag clearly, perhaps in header field or as the size of the clear and definite message signaling receiver encoder packet bag in the individual channel.

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

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

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

In certain embodiments, the indication of transmission of new packets bag is included between the subclass of two mutually exclusive walsh codes and switches.Shown as the example among Fig. 6, the first and second 4-ray walsh codes, W ₀ ⁴And W ₁ ⁴, form first subclass, and the third and fourth 4-ray walsh code, W ₂ ⁴And W ₃ ⁴, form second subclass.In the present embodiment, the first sub-packet transmissions is by the walsh code W in the header portion ₁ ⁴Or W ₃ ⁴Indicate.For example, can use W ₁ ⁴Indicate the transmission first time of i grouping bag.Then, can use W ₀ ⁴Indicate i all subsequent transmission of grouping bag.For the transmission first time of i+1 grouping bag, can use W ₃ ⁴Indicate the transmission of the first son grouping bag.And, because W ₃ ⁴Be in second subclass of walsh code, and W ₀ ⁴And W ₁ ⁴Be in first subclass of walsh code, so the W in the header portion of the first son grouping 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.The transmission first time for i+2 bag can reuse W ₀ ⁴Be used as indicating device, or the like.

Like this, just can indicate the transmission of grouping bag new, even-numbered to begin with the walsh code in walsh code first subclass.Can use residue walsh code in walsh code first subclass to indicate 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 subclass.Can use residue walsh code in walsh code second subclass to indicate 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 in header portion, carry son grouping packet number clearly.

The invention provides a kind of being used for allows a plurality of users to share same asset and reduces the peculiar methods and the system of the user's that the delay sensitive type uses time-delay simultaneously at wireless communication system.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 only are example but not are used 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 when providing known elements.A lot of concerning understanding the present invention fully unnecessary details therefore, omitted such details to a great extent all within those skilled in the art's skill.Control circuit described herein all within those skilled in the art's skill, thereby, omitted 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 first preferred embodiment, each shared resource has all formed the business that independent tubes is used for carrying different user. AI_SN indicating device 230 and 240 indicates to share whether new grouping bag begins in the viscosity resource 210 and 220 respectively.If the beginning is unwrapped in the new grouping of sharing in the viscosity resource, so Dui Ying 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 another BE user's 280 shared viscosity resources 220.

The transmitter that the base station is located comes scrambling the son grouping to wrap with the purpose user's of coded data grouping 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 son that receives grouping bag 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 son grouping bag of can correctly decoding.On the other hand, if the son that receives grouping is wrapped 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.

The base station is to grouping bag of the Any user transmission of using identical shared resource, wraps up to this grouping and successfully decoded or reach maximum retransmission.Therefore, redirect between the shared resource that a user's who has distributed a plurality of shared resources transmission can only distribute at the boundary of grouping bag, rather than redirect between the re-transmission of the son grouping 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.Under the situation of the complexity of being indifferent to 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 the 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 the convenient viscosity resource 220 to unwrap, remove the detection buffering area in its receiver.Among the voip user 260 and 270 each all 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, remove first in its receiver and detect buffering area with the new grouping in the convenient viscosity resource 210.Simultaneously, among the voip user 260 and 270 each also all 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, remove second in its receiver and detect buffering area with the new grouping in the convenient viscosity resource 220.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.

Among Fig. 7, voip user 260 and 270 can with its earliest availability in such as the shared viscosity resource of a plurality of distribution of resource 210 and 220, select a shared viscosity resource to begin the transmission of new grouping bag (being new H-ARQ sequence), and in BE user 250 and 280 each all 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 the chance that any other class user selects resource at least, but more preferably, be 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 the chance that user that the time delay non-sensitive type uses selects shared resource at least.

When successfully or H-ARQ when transmission of finishing the grouping bag in the 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 the business of an independent tubes with the 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 all to have distributed to the user who is dispatched based on channel and flow situation, user type, the availability of each shared resource and all shared resources in the SSA group dynamically, there is which shared resource to distribute to the user who is dispatched so.For example, because the data rate that VoIP uses is more stable comparatively speaking, so can be defined as non-voip user to those its business by the user that combined pipe carries.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 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.In order to reduce the quantity that user 350 carries out the required hypothesis of blind decoding and detects buffering area, can further limit, for example, shown in the thick arrow among 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 uses its first detection buffering area to come the independent pipeline of resource 310 is carried out blind decoding, and uses its second detection buffering area to come the combined pipe of resource 310 and 320 is carried out blind decoding.And user 350 monitors AI_SN indicating device 330 and 340.Under the situation of the complexity of being indifferent to receiver, can cancel such restriction.

In the example shown in Fig. 7, be that user 250,260,270 and 280 has distributed their shared viscosity resources separately with the sticky assignment.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, promptly 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,, distribute shared viscosity resource concerning the receiver of those sticky user 250,260,270 and 280 for non-sticky users so no matter whether the base station has switched the AI_SN indicating device, also be transparent, until relating to decoding.For correctly decoding grouping bag separately only when the beginning is unwrapped in its new grouping, detects buffering area just each user in sticky user 250,260,270 and 280 need remove it.Yet when base station dispatcher was given the non-sticky users of using shared viscosity resource with transmitting and scheduling, base station dispatcher need 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 and a kind ofly be used for minimizing the signaling consumption of setting up described SSA group needs, add and deletion 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 are that example illustrates this method with the control signaling of the advanced interface evolution (AIE) of the current CDMA2000 standard of developing.Those skilled in the art are clear that when this method of the present invention is applied to other wireless communication standard, to have other variation 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, the CRC bit is at first 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 among the 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 channel logo control channel, 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 homophase of modulator 440 (I) and quadrature (Q) is carried out gain controlling by channel gain element 445 and 450 respectively.Then, utilize FDMA, CDMA, TDMA, OFDMA or its combination to carry out multiplexing by channel multiplexer 455 to channel gain element 445 and 450 composite signal and other channels of exporting.

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 is setting up for the user with indication organizes, each SSA group and the correspondence of each shared resource in each SSA group to layer 3 information broadcast.This layer 3 message can be indicated the position of AI_SN indicating device in bitmap of each the shared resource correspondence in each SSA group clearly.Perhaps can impliedly indicate the position of AI_SN indicating device in bitmap of each the shared resource correspondence in each SSA group by the sequence of the shared resource that occurs in layer 3 message of setting up the 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 all occurs with shared resource in setting up layer 3 message of SSA group of each bit in the 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 give this control channel, with the 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 also can be indicated in superframe preamble by broadcast channel by indicating with one deck 3 message.

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

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 has correctly received when continuing assignment messages that (or viscosity) bit sends and this channel id belong in the shared resource that layer 3 message have set up one in the SSA group, this user knows that it has been given shared sticky assignment.This user expectation and more users are shared this resource.And this user will monitor corresponding AI_SN bit.For more shared resources are added the user who has distributed at least one shared viscosity resource to, the additional bit (for example, being made as " 1 ") in the assignment messages is set.In order to give non-sticky users shared sticky assignment of resources provisionally, the lasting bit (for example, being made as " 0 ") in the 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 in the example among Fig. 8 350, channel id in the 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 then 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 disclosed method provides the thinner granularity that is used in a plurality of shared among users resources among the present invention.And in disclosed technology before, N is always 1.Therefore, the disclosed method system that makes can increase shared ratio gradually among the present invention, and obtain system effectiveness and the QoS that guaranteed between appropriate balance.

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

Among 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), the frequency chunks on wherein resource refers to sometime at interval; Time division multiple access (TDMA), wherein resource refers to the time interval; Code division multiple access (CDMA), quadrature or pseudo-orthogonal coding on wherein resource refers to sometime at interval; OFDM inserts (OFDMA), the frequency sub-carrier of the quadrature on wherein resource refers to sometime at interval.

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 to realize 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 example only, but not are used 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 for the known elements that provides.A lot of concerning understanding the present invention fully unnecessary details therefore, omitted such details to a great extent all within those skilled in the art's skill.Here Shuo Ming control circuit is all within those skilled in the art's skill, thereby, omitted details about these control circuits.

According to an aspect of the present invention, the base station sends the upright message of establishment and begins the foundation group, and the user is joined in the 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 or the like.The upright message of establishment in the table 1 is sent to each voip user, and the upright message of the establishment in the table 2 is sent to each data user.As the example of the overhead requirements that minimizes MCS indication, in the upright message of this user's establishment, 4 MCS index (Mod_Coding_1, Mod_Coding_2, Mod_Coding_3 and Mod_Coding_4) are set based on data user's channel situation.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 2 1010 is optionally, provides extraneous information to indicate the number and/or the grouping packet format of the piece that is distributed 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 buffering zone state or the like based on channel quality.Data bit Figure 100 5 generally includes K-1 the pairing 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 the bitmap, calculates shared piece, and locatees the current piece accurately of distributing to this data user.Because notified the size of 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 size of the piece of coding depends on the size and the employed MCS scheme of Resources allocation.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 by top signaling from the MCS bit to the actual packet packet format.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 that ' 00 '.Described data user will consider all activated voice user on the 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 to ignore the MCS index value so not from voip user's surplus resources according to bitmap.

The AI_SN bit of each data pipe in the data bit figure header that utilizes shown in 230 has been shown, multiplexing many (N) individual voice user and the pattern 1 of many (M) individual data user among Figure 10 B with the data bit figure header of shared identical running time-frequency resource.Suppose to have K data pipeline, then the length of data bit figure header is the K bit.By indicating device is wrapped in new grouping, just as illustrated AI_SN in [0016], be set to ' 1 ' or ' 0 ', or by between " 1 " and " 0 ", switching the bag indicating device that should newly divide into groups, 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, has only 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 detect the switching of AI_SN, described receiver will be removed the H-ARQ buffering area at receiver place and restart to attempt decoding.Otherwise it will attempt symbol that receives and the symbol that had before received are carried out soft merging, and wherein, this symbol that had before received was stored in the buffering area before attempting this grouping bag of decoding.In the number K of data pipe equals 1 example, only stay next AI_SN in 230, and do not need 1020 among 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, multiplexing many (N) individual voice user and the pattern 2 of many (M) individual data user among Figure 10 C with the data bit figure header of shared identical running time-frequency resource.Supposing has L bit (supporting M=2^L data user at most) in the index, the length of data bit figure header becomes L * K bit.In the present embodiment, the MCS field among 1020 and 1025 among 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 then.In the number K of data pipe equals 1 example, only stay next user index field in 235, and do not need 1020 among Figure 10 A.As the number K of the data pipe in the 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 among 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 among 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 that at 1 bit of place, fixed position use being (' 1 ') denys to have distributed (' 0 ') data pipe to transmit for this corresponding user.Suppose to have in the group M data user, then the length of data bit figure header is M.In the present embodiment, the MCS field among 1020 and 1025 among 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 then.When number K of data pipe in the 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 the foregoing descriptions, for the voip user, bitmap 2 all is optional.The data user also can operate as normal under the situation that does not have bitmap 2.

Data bit figure header also can mix use user 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 son grouping bag simply, becomes available up to resource.Another kind method is to utilize self adaptation to retransmit, and promptly cuts apart son grouping bag to adapt to the size of the surplus resources that is used to retransmit.Another kind of more positive method is to allow AN to be preserved for retransmitting the required resource of any son grouping bag in group, up to confirming this son grouping bag or reaching maximum retransmission.But this method may influence voip user's transmission a little.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 son grouping bag.

In the above-described embodiments, the data user can also be a plurality of groups member.This data user will receive the upright message of a plurality of establishments, and must monitor a plurality of bitmaps from AN.For instance, at a certain frame, AN just a group in these groups activates described user and transmits data.Described data user has bigger 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 restriction of less antithetical phrase grouping bag re-transmission.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, can use power to control to determine a termination more Zao, so that can reduce number of retransmissions than default value to retransmitting the restriction of resource.

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

With accomplished in many ways message (for example, group management information) is broadcast to all users in the group.In an example, an extra bit add to represent in the bitmap this surplus resources whether be used for broadcasting.Again for example, when using data user's index, can keep a value (if use 3 bits, for example ' 111 ') and indicate the broadcast message in the surplus resources.In another example, can use F_SCCH to indicate broadcast transmitted in surplus resources, 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 voip user among 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 then has lower priority to the insensitive business of for example time delay.At this moment, still can use said method.

But, under the situation that does 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, all be that the base station sends message and travelling carriage reception 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 to realize or various illustrative boxes, module and circuit that execution is relevant with disclosed embodiment 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 peculiar methods of sharing Radio Resource in the ofdma communication system.It should be understood, however, that following disclosing provides many different embodiment or the example that is used to realize 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 example only, 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 concerning understanding the present invention fully unnecessary details therefore, omitted such details to a great extent all within those skilled in the art's skill.Control circuit described herein all within those skilled in the art's skill, thereby, omitted details about these control circuits.

According to an aspect of the present invention, use bitmap control 1 to control dispatch group.Bitmap control 2 then not only is used to represent the running time-frequency resource that used by the dispatch group travelling carriage, also be used for signaling is carrying out the dispatch group resource-sharing with the current scheduling group the shared resource of other dispatch group, perhaps also being used to indicate can be by the available surplus resources of shared group travelling carriage use.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, by realizing signaling in the bitmap 2 with the clear and definite mapping one to one of the employed resource of other dispatch group.This resource of in the 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 overlapping fully.In the case, dispatch group is shared 10 running time-frequency resources.Further, in this illustrative example, 1 in the bitmap 2 expression is associated with this excited users by 2 running time-frequency resources, 1 then expression have a running time-frequency resource to be associated with this excited users.Should also be noted that to be that 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 among the dispatch group A activate.Bitmap 2 indication running time-frequency resources 1 among the dispatch group A have been distributed to MS3 and running time-frequency resource 2 and 3 has been distributed to MS2.Now, whether use does not have the explanation of other bit in the related bitmap 2 to indicate running time-frequency resource to be used by other dispatch group with excited users.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 then 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 among Figure 11.In the case, bitmap 1 illustrates MS7 and activates, and has given MS7 and bitmap 2 illustrates 2 time-frequency resource allocating.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.There is not 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 among dispatch group B Fig. 1 on the throne yet.Now, the correspondence of the running time-frequency resource that uses in the 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 first running time-frequency resource, and bit second from the bottom is then corresponding to the running time-frequency resource of second running time-frequency resource, or the like.

Although in the 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 among 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 that the travelling carriage among the 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 just very clear now: 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 bit that is not associated with excited users among control bit Fig. 1 and the bit among this dispatch group Fig. 2 on the throne: whether last bit indexed resource P-X of bitmap 2 has been used by other dispatch group, whether the penult 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, or the like.

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 number by conclusivelying show idle running time-frequency resource or base station are wanted to distribute in the bitmap 2 not with the excited users of bitmap 1 is associated is come the idle running time-frequency resource of signaling.Owing to can obtain the line of demarcation between occupied running time-frequency resource and the idle running time-frequency resource, so under the known situation of line of demarcation and length, just can represent whole idle running time-frequency resource from the bit that is associated with excited users the bitmap 1.

According to another invention of the present invention, use bitmap control 2 to control dispatch group.In this control mode, bitmap 2 not only is used to represent the employed running time-frequency resource of dispatch group travelling carriage, but also is used for signaling is carrying out the dispatch group resource-sharing with the current scheduling group the shared resource of other dispatch group.In the case, clear and definite man-to-man mapping relations are arranged between bit in the bitmap 2 and the running time-frequency resource.In the case, when sometime at interval in, during initial transmission that running time-frequency resource can not be used to divide into groups to wrap, bitmap is 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 among the dispatch group A have a new packet transmissions.Bitmap 2 indication running time-frequency resources 0 among the dispatch group A have been distributed to MS3 and running time-frequency resource 4 has been distributed to MS2.Now, whether use does not have the explanation of other bit in the related bitmap 2 to indicate running time-frequency resource to be used by other dispatch group with excited users.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 then is their spendable surplus resources.

The bitmap 1 of checking the dispatch group B among Figure 13 as can be known, MS7 is scheduled and sends new bag.MS7 will check that the concurrent current resources 10 frequently of the bitmap 2 of dispatch group B have distributed to it.Except the employed running time-frequency resource of dispatch group A of indication, running time- frequency resource 3 and 4 also will be shown as and be used.Therefore, a part of travelling carriage in the shared group of the surplus resources of shared dispatch group B will know that running time- frequency resource 3,4,10 and 11 is 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 in view of the above.

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 other embodiment that are included within spirit of the present invention and the protection range.Therefore, protection scope of the present invention is not limited only to described embodiment, but comprises that all meet the wideest protection range of principle of the present invention and new feature.

Claims (48)

1, a kind of method of sharing Radio Resource in OFDM (OFDMA) communication system is characterized in that described ofdma communication system comprises transmitter, first receiver and 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 son grouping bags of this grouping bag;

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

Utilize selected this first receiver or second receiver scrambler separately to come that described a plurality of son grouping bags are carried out scrambling handles at the transmitter place.

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, further may further comprise the steps:

At each receiver place, the scrambler unique separately with each receiver carries out scramble process;

At each receiver place, carry out decoding processing;

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 affirmation negating so;

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

7, method according to claim 5 is characterized in that, further may further comprise the steps:

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

Provide the detection buffering area at this receiver place;

If detect the notice that sends the bag that newly divides into groups at this receiver place, before the grouping bag is decoded, remove this detection buffering area so;

Send the notice of grouping bag newly if this receiver detects, before the bag that divides into groups was decoded, the son grouping of the descrambling of storing in the son grouping bag of the current descrambling of soft merging and this detection buffering area was wrapped so.

If cyclic redundancy check (CRC) negates so the grouping of the son after soft merging bag 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 son grouping bag.

10, method according to claim 7 is characterized in that, this transmitter uses Walsh Walsh sign indicating number that the notice that sends new grouping bag is provided.

11, method according to claim 10 is characterized in that, the notice that sends new grouping bag further comprises: the switching between signaling the one Walsh sign indicating number and the 2nd Walsh sign indicating number.

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

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

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

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

16, a kind of receiver is handled the method for son grouping bag, it is characterized in that, described receiver has mixed automatic retransmission request (H-ARQ) and detects buffering area, said method comprising the steps of:

Receive son grouping bag;

Utilize the unique scrambler that is associated with this receiver that this son grouping bag is carried out descrambling;

The son grouping that the current descrambling of soft merging is crossed is wrapped and has been stored in the son grouping bag that the descrambling in this detection buffering area is crossed;

The son grouping bag that uses the descrambling after the described merging to cross comes the decoded packet bag;

Carry out cyclic redundancy check (CRC); And

If this cyclic redundancy check (CRC) negates so the grouping of the son after described soft merging bag to be stored in this detection buffering area.

17, method according to claim 16 is characterized in that, further may further comprise the steps:

Detect new H-ARQ sequence; And

When detecting new H-ARQ sequence, before this soft combining step, remove this detection buffering area.

18, method according to claim 17 is characterized in that, detects new H-ARQ sequence and further comprises: receive index signal by signaling channel, described signaling channel is independent of the channel of described grouping bag of carrying and son grouping bag.

19, method according to claim 17 is characterized in that, the new H-ARQ sequence of described detection further is included in each sub header that divides into groups to wrap and comprises index signal.

20, method according to claim 17 is characterized in that, the new H-ARQ sequence of described detection further comprises the switching between the sign first indicating device sign indicating number and the second indicating device sign indicating number.

21, method according to claim 17 is characterized in that, further comprises: if this cyclic redundancy check (CRC) is sure, then sends and confirm.

22, method according to claim 17 is characterized in that, further comprises: if this cyclic redundancy check (CRC) negates then to send the affirmation negating.

23, share the system of Radio Resource in a kind of ofdma communication system, it is characterized in that, comprising:

Transmitter is used for sending a plurality of son grouping bags of forming the grouping bag by first Radio Resource;

First receiver and second receiver are used for receiving described a plurality of son grouping bag by this first Radio Resource from this transmitter;

Wherein this transmitter comes the son grouping in the described a plurality of son grouping bags of scrambling to wrap with unique scrambler related with this first receiver or second receiver; And

Each receiver all comes son grouping bag in the described a plurality of son grouping bags of descrambling with separately unique scrambler.

24, system according to claim 23 is characterized in that, each receiver all carries out the validity that cyclic redundancy check (CRC) is verified this son grouping bag.

25, system according to claim 24 is characterized in that, each receiver checks that all the header of this son grouping bag is to determine whether this son grouping bag sends to this first receiver.

26, system according to claim 24 is characterized in that, each receiver checks that all indicating device clear and definite in the one other channel is to determine whether this son grouping bag sends to this first receiver.

27, system according to claim 23 is characterized in that, each receiver all 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 the affirmation negating so.

28, a kind of method that is used for the purpose user of multi-user comm signaling grouping bag is characterized in that, may further comprise the steps:

Continue to distribute first Radio Resource to give first user;

Provide and utilize this first Radio Resource to send to second user's grouping bag;

It is the indicating device that sends to this second user that the son grouping bag that shows this grouping bag is provided;

Should send to described first user and second user by son grouping bag; And

Described first user and second user handle this son grouping bag.

29, method according to claim 28 is characterized in that, carries out described providing with implicit signaling method and shows that the son grouping bag that this grouping is wrapped is the step that sends to this second user's indicating device.

30, method according to claim 29 is characterized in that, the method for the signaling that this is implicit further comprises with the unique scrambler related with this second user comes scrambling the son grouping to wrap.

31, method according to claim 28 is characterized in that, carries out described providing with clear and definite signaling method and shows that the son grouping bag that this grouping is wrapped is the step that sends to second user's indicating device.

32, method according to claim 31 is characterized in that, this clear and definite signaling method further is included in and embeds in the header of this son grouping bag that the son grouping of notifying this grouping bag wraps is the clearly indication that sends to second user.

33, method according to claim 31 is characterized in that, this clear and definite signaling method further comprises by independent signaling channel and shows that the son grouping bag of this grouping bag is the clearly indication that sends to this second user.

34, a kind ofly allow a plurality of users to share the method that same asset reduces the user's that the delay sensitive type uses time delay simultaneously, it is characterized in that this method comprises: in the sector, form one or organize more than a shared sticky assignment (SSA);

In at least one SSA group, distribute more than a shared viscosity resource;

Described user is divided into the first kind user and the second class user at least;

When described shared resource can be used for newly dividing into groups bag, give described first kind user priority of obtaining described shared resource than the described second class user Geng Gao; And

When beginning transmission of new packets bag, give described first kind user than the described second class user chance of more options shared resource more.

35, a kind of method of many first kind users being divided into groups with second type of user and making their shared identical running time-frequency resources is characterized in that this method comprises:

The upright message of the establishment of user, user type and group special use is sent to each user in this group; And

Utilize the bitmap signaling that the transmit status of described first kind user and described second type of user is notified to described first kind user and described second type of user.

36, method according to claim 35, it is characterized in that, described first kind user has the business of higher priority, for example to ip voice (VoIP) business of delay sensitive, and described second type of user has the business of lower priority, for example to the insensitive type business of doing one's best of time delay.

37, method according to claim 35, it is characterized in that unique GroupID, unique medium access control (MAC) index (MAC_ID) of access terminal (AT), specific resources set, bitmap lengths and position, modulation and encoding scheme (MCS) field of distributing to this group and the length of size (SIZE) field and the parameter of other group, user type and user's special use of the upright message designated groups of described establishment.

38, method according to claim 35, it is characterized in that, described bitmap signaling uses the user index in the data bitmap grouping bag to indicate the activation data user of each data pipe, and a value that keeps the MCS field indicates re-transmission, and with newly the divide into groups arrival of wrapping of other value representation.

39, method according to claim 35, it is characterized in that, it is (' 1 ') to deny to have distributed (' 0 ') data pipe to give this respective user that described bitmap signaling utilizes the bit of a fixed position in the data bit figure header to come for each data user indicates, and a value that keeps the MCS field is indicated re-transmission, and is worth the arrival of indicating new grouping bag with other.

40, according to claim 38 or 39 described methods, it is characterized in that, described MCS index is united the predetermined MCS option that sends and is determined actual transmission grouping packet format jointly in setting up upright message, and can adjust the mapping of these bits to actual MCS by top signaling.

41, a kind of being used for indicates dispatch group by the method which user receives the grouping bag by new grouping bag indicating device and user's blind Detecting, it is characterized in that this method comprises:

Utilizing the automatic re-send request may sequence of events of handover overhead number (AI_SN) of 1 bit to come the notification data user is that new son grouping bag or the son grouping bag that retransmits arrive, and utilizes MCS field signaling to indicate the modulation and the encoding scheme of described new son grouping bag; And

Utilize this scheduled user's the specific scrambler of user to come transmission data in each data pipe of scrambling; And

When AI_SN switches, allow the grouping bag of the data user's blind Detecting input in this group, and have only this user who is scheduled just can achieve success with its specific scrambler.

According to claim 35 or 41 described methods, it is characterized in that 42, this data bit figure header hybrid subscriber index, bitmap indication and AI_SN indicate excited users.

43, a kind of the data user is distributed in the sector a plurality of groups so that described user and other user of different sets share the method for different running time-frequency resources, it is characterized in that this method comprises:

The upright message of a plurality of establishments send to that the user indicates that described user distributes not on the same group;

Make the bitmap of described user's supervision from the group under all these users; And

Support is striden the sub-packet transmissions between group and is retransmitted to use the surplus resources of all groups.

According to the described method of claim 43, it is characterized in that 44, the upright message of described a plurality of establishments can come to be the different MCS option of described user definition according to the channel situation of the different running time-frequency resources that distribute in the group.

According to the described method of claim 43, it is characterized in that 45, described data user can stride a plurality of groups simultaneously and transmit one or more grouping bags.

46, a kind of method of utilizing surplus resources broadcast message in the group of having set up is characterized in that, this method comprises:

Use the overhead-bits extra in the data bitmap or the retention of user index to indicate the surplus resources that is broadcasted.

47, a kind of method of utilizing forward link shared control channel (F-SCCH) broadcast message in the group of having set up is characterized in that this method comprises:

F_SCCH is sent to all users clearly to indicate the resource that is used to broadcast, and described resource can be for organizing outer or the interior resource of group.

48, a kind of OFDM (OFDM) radio communication, it is characterized in that, a plurality of travelling carriages are formed a plurality of dispatch group, each dispatch group is shared the common set of a running time-frequency resource, utilize the bitmap signaling effectively to control running time-frequency resource and give the travelling carriage that belongs to this dispatch group by set of dispense, and the running time-frequency resource that the travelling carriage that belongs to this dispatch group does not have to use can be used by the travelling carriage that belongs to shared group, by the bitmap signaling realize the signaling free time, and the running time-frequency resource that can use by the travelling carriage that belongs to this shared group.

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