CN101867445A - In system of broadband wireless communication, use the apparatus and method of code book Resources allocation - Google Patents

Abstract

The invention provides a kind of being used at system of broadband wireless communication method of allocating resources and device.In the method, Modulation and Coding Scheme (MCS) rank collection and the burst size collection that is identified for producing code book is determined.Use MCS rank collection and burst size collection to produce code book.Produced and be read resource allocation information according to code book.

Description

In system of broadband wireless communication, use the apparatus and method of code book Resources allocation

Technical field

The present invention relates to system of broadband wireless communication.More specifically, the present invention relates in system of broadband wireless communication, use the apparatus and method of code book Resources allocation.

Background technology

As the 4th generation of next generation communication system in (4G) communication system, carrying out the transmission rate that use is approximately 100Mbps is provided to the user research of business with various service quality (QoS).Representational communication system is Institute of Electrical and Electric Engineers (IEEE) 802.16 systems.IEEE 802.16 system applies OFDMs (OFDM)/OFDM (OFDMA) scheme is so that support broadband transmission network in physical channel.

In the system of broadband wireless communication such as IEEE 802.16 systems, in order to send/receive data, the terminal distribution resource is given in the base station.In addition, the base station sends MAP by downlink channel to terminal, and it represents the resource allocation result such as position, size, modulation scheme, code rate etc. of institute's Resources allocation.In addition, when using multiple-input and multiple-output (MIMO) technology, the MIMO configuration information of additionally representative being used which MIMO technology adds among the described MAP.Usually, the configuration representative is used for the MAP and the MAP that represents the resource allocation result that is used for downlink communication of the resource allocation result of uplink communication respectively, and is used to distribute the information unit of a resource to be called as information element (IE).

For executive communication, the transmission of MAP is necessary.Yet, comparing with data, MAP has advantage aspect the Radio Resource taking.Therefore, when because the transmission of MAP when causing the consumption of Radio Resource big, the quantity that can be used for the Radio Resource of transfer of data reduces.Therefore, should design MAP, and have minimum capacity simultaneously so that described MAP can transmit the information of the resource allocation that is useful on.That is, need to propose a kind of minimizing because the possibility of the expense that MAP causes.

Summary of the invention

One aspect of the present invention is to address the above problem at least and/or shortcoming and following advantage is provided at least.Correspondingly, one aspect of the present invention provides a kind of apparatus and method that are used for reducing at system of broadband wireless communication the expense that causes owing to resource allocation information.

Another aspect of the present invention provides a kind of apparatus and method that are used for producing and reading at system of broadband wireless communication the resource allocation information that is used for narrow Modulation and Coding Scheme (MCS) rank and resource size.

One side more of the present invention provides a kind of being used for to use code book to produce and read the apparatus and method of resource allocation information at system of broadband wireless communication.

Still one side of the present invention provides a kind of being used for to use code book to produce and read the apparatus and method of resource allocation information according to group resource allocation (GRA) scheme at system of broadband wireless communication.

According to an aspect of the present invention, provide a kind of method that is used at system of broadband wireless communication operate wireless node.This method comprises: Modulation and Coding Scheme (MCS) the rank collection and the burst size collection that are identified for producing code book, by using described MCS rank collection and described burst size collection to produce code book, and produce or read resource allocation information according to described code book.

According to a further aspect in the invention, provide a kind of device that is used at system of broadband wireless communication operate wireless node.Described device comprises: controller is used to be identified for producing modulation and encoding scheme (MCS) the rank collection and the burst size collection of code book, and is used for by using described MCS rank collection and described burst size collection to produce code book; And message handling device, be used for producing or read resource allocation information according to described code book.

From below in conjunction with the detailed description that accompanying drawing carried out that discloses one exemplary embodiment of the present invention, to one skilled in the art, it is clear that others of the present invention, advantage and prominent features will become.

Description of drawings

From the explanation of carrying out below in conjunction with accompanying drawing, above-mentioned and others, the feature and advantage of some exemplary embodiment of the present invention will be clearer, wherein:

Fig. 1 is the figure of diagram frame structure of the system of broadband wireless communication of one exemplary embodiment according to the present invention;

Fig. 2 is the figure of the operation of the terminal of using Resource Allocation Formula independently in system of broadband wireless communication of diagram one exemplary embodiment according to the present invention and base station;

Fig. 3 is the figure of the group message arrangement in the system of broadband wireless communication of diagram one exemplary embodiment according to the present invention;

Fig. 4 and Fig. 5 are the terminal of use group resource distribution (GRA) scheme in system of broadband wireless communication of diagram one exemplary embodiment according to the present invention and the figure of base station;

Fig. 6 is the flow chart of the operating process of the terminal in the system of broadband wireless communication of diagram one exemplary embodiment according to the present invention;

Fig. 7 is the flow chart of the operating process of the base station in the system of broadband wireless communication of diagram one exemplary embodiment according to the present invention;

Fig. 8 is the flow chart of the operating process of the terminal in the system of broadband wireless communication of diagram one exemplary embodiment according to the present invention;

Fig. 9 is the flow chart of the operating process of the base station in the system of broadband wireless communication of diagram one exemplary embodiment according to the present invention;

Figure 10 is the flow chart of the operating process of the terminal in the system of broadband wireless communication of diagram one exemplary embodiment according to the present invention;

Figure 11 is the flow chart of the operating process of the base station in the system of broadband wireless communication of diagram one exemplary embodiment according to the present invention;

Figure 12 produces the flow chart of the process of code book in base station and end in the system of broadband wireless communication of diagram one exemplary embodiment according to the present invention;

Figure 13 is the flow chart of the resource allocation process of the group of base stations in the system of broadband wireless communication of diagram one exemplary embodiment according to the present invention;

Figure 14 is the flow chart of resource deterministic process of the terminal of the adding group in the system of broadband wireless communication of diagram one exemplary embodiment according to the present invention;

Figure 15 is the block diagram of the terminal in the system of broadband wireless communication of diagram one exemplary embodiment according to the present invention; And

Figure 16 is the block diagram of the base station in the system of broadband wireless communication of diagram one exemplary embodiment according to the present invention.

Run through institute's drawings attached, identical Reference numeral will be understood that to refer to identical part, assembly and structure.

Embodiment

Provide with reference to the accompanying drawings explanation to help to complete understanding by claim and the exemplary embodiment of the present invention that equivalent was limited thereof.It comprises with the various specific detail of helping understand, and is exemplary but these will be only considered to be.Correspondingly, those of ordinary skill in the art will recognize: under the situation that does not deviate from scope and spirit of the present invention, can carry out various changes and modification to embodiment described here.Equally, for clarity and conciseness for the purpose of, omitted explanation to known function and structure.

Employed term and word are not limited to its dictionary meanings in specification below and the claim, and only are used for making it possible to knowing and as one man understanding the present invention by the inventor.Correspondingly, those skilled in the art is to be understood that: provide the following explanation to exemplary embodiment of the present to be only used for illustrative purposes, rather than be used to limit by claims and purpose of the present invention that equivalent limited thereof.

Be appreciated that singular references " " and " that " comprise that plural number refers to, unless difference clearly indicated in context.Therefore, for example, mentioning " assembly surface " comprises and refers to one or more such surfaces.

Do not need accurately to obtain feature, parameter or the value narrated by term " basically " expression, but those deviations or variation (comprising for example tolerance, measure error, measurement precision restriction and other factor well known to those skilled in the art) can be not hinder measuring of effect that described feature expection will provide existing.

Exemplary embodiment of the present invention is provided for reducing the technology of the expense that causes owing to resource allocation information in system of broadband wireless communication.Use the OFDM/OFDMA wireless communication system to describe the present invention as an example, but the present invention can be conveniently used in the wireless communication system of different schemes.

Fig. 1 is the figure of diagram frame structure of the system of broadband wireless communication of one exemplary embodiment according to the present invention.

Comprise a plurality of frames 120 with reference to 1, one superframe 110 of figure.In addition, each frame 120 comprises a plurality of subframes 130.Each subframe 130 comprises a plurality of OFDMA code elements 140.Resource to each subframe 130 inside is carried out resource allocation, and serves as the resource of each subframe 130 inside of distribution, basis with Resource Unit (RU).That is be that the terminal distribution RU that communicates with the base station is given on the basis with the integer.

Therefore, send MAP message at each subframe 130.At this moment, each MAP IE of each resource allocation result of expression that comprises in described MAP message carries out in the scrambler at least one through Cyclic Redundancy Check and unique sequence of distributing to terminal by utilization.Correspondingly, each terminal is by carrying out the CRC test and at least one discerns the MAP IE of this terminal so that unique sequence of distributing to this terminal is carried out in the descrambling each IE.Above-mentioned MAP IE encoding scheme is called as independent coding.

In order to reduce the size of resource allocation information, transmit size and other type of MCS level of grouping according to the system of broadband wireless communication restriction of exemplary embodiment of the present invention.In doing so, based on using the sort of MCS rank to determine the quantity of available resource size.Correspondingly, base station and terminal produce the code book of narrow MCS rank of indication and resource size, and the base station produces the MCS rank that representative distributed and the resource allocation information of resource size based on described code book.

For this purpose, base station and terminal were carried out the negotiations process that is used to produce code book before carrying out data communication.In other words, definite candidate MCS rank in base station and the terminal and candidate's grouping dimension are notified determined candidate MCS rank and candidate's grouping dimension.In base station and the terminal another carried out the process of the decision that receives the other side.When determining that the negotiations process of being finished is improper, base station and terminal can change candidate MCS rank and candidate's grouping dimension by re-executing negotiations process.For this negotiations process, at least one in Indication message and the negotiation acknowledge message consulted in base station and terminal transmission/reception.Here, candidate's grouping dimension comprises a plurality of discrete grouping dimensions, perhaps comprises the grouping dimension in the particular range of expressing with minimum value and maximum.

After carrying out negotiation procedure, base station and terminal are according to process determined candidate MCS rank and candidate's grouping dimension produce code book through consultation.At first, base station and terminal are come the computational resource size based on determined candidate MCS rank and candidate's grouping dimension.At this moment, the unit of resource size is called as Resource Unit (RU).RU is minimum resource allocation unit, and comprises the quantity of the determined audio frequency of system (tone).For example, RU comprises 96 audio frequency.For example, suppose candidate's grouping dimension be 16 bytes to 42 bytes, and candidate MCS rank is Quadrature Phase Shift Keying (QPSK) 1/4 and QPSK1/2, it is corresponding that the resource size is as shown in table 1 provides.In table 1, the resource size is represented with the quantity of RU.

Table 1

Grouping dimension	Resource size (QPSK1/4)	Resource size (QPSK1/2)
			??42	??7	??4
??41	??7	??4
			??40	??7	??4
??39	??7	??4
			??38	??7	??4
??37	??7	??4
			??36	??6	??3
??35	??6	??3
			??34	??6	??3
??33	??6	??3
			??32	??6	??3
??31	??6	??3
			??30	??5	??3
??29	??5	??3
			??28	??5	??3
??27	??5	??3
			??26	??5	??3

Grouping dimension	Resource size (QPSK1/4)	Resource size (QPSK1/2)
			??25	??5	??3
??24	??4	??2
			??23	??4	??2
??22	??4	??2
			??21	??4	??2
??20	??4	??2
			??19	??4	??2
??18	??3	??2
			??17	??3	??2
??16	??3	??2

As shown in table 1, after the resource size of every kind of combination of calculating MCS rank and grouping dimension, base station and terminal are the combination assigned code of MCS rank and resource size according to predetermined rule.For example, according to the described sign indicating number of MCS rank of being arranged and the resource size order assignment of being arranged.In this case, as table 2 assigned code.

Table 2

The MCS rank	The resource size	Sign indicating number
			??QPSK1/4	??7	??000
??QPSK1/4	??6	??001
			??QPSK1/4	??5	??010
??QPSK1/4	??4	??011
			??QPSK1/4	??3	??100
??QPSK1/2	??4	??101
			??QPSK1/2	??3	??110
??QPSK1/2	??2	??111

Use the base station of code book shown in Figure 2 only to consider that MCS rank and the grouping dimension consulted come Resources allocation, select a kind of in the combination of MCS rank in the code book and resource size, and will send to terminal as resource allocation information corresponding to the sign indicating number of selected combination.Therefore, terminal determines to distribute to the resource of this terminal corresponding to the combination of the MCS rank of described sign indicating number and resource size by search.

When producing code book, the length computation of sign indicating number is as follows.At first, use formula (1) to calculate the quantity of the bit that can pass through a RU transmission.

D_bit_RU(i)＝N_sub_RU?x?B(i)...........................(1)

Wherein, D_bit_RU (i) is the quantity of data bit when using i MCS rank, and N_sub_RU is the quantity of the subcarrier of each RU, and B (i) is the quantity of the transmissible data bit of each subcarrier when using i MCS rank.

Use formula (2) to calculate and to give the quantity of the resource size of each MCS level allocation, the quantity of the data bit that each RU that formula (2) use utilizes formula (1) to calculate can transmit.

N_RU_req(i)＝Ceil[P_long/D_bit_RU(i)]-Ceil[P_short/D_bit_RU(i)]+1...(2)

Wherein, the quantity of the resource size that N_RU_req (i) can distribute when being i MCS rank of application, Ceil[] be to rise operator (raising operator), P_long is the largest packet size, P_short is the minimum packets size, and D_bit_RU (i) is the quantity of data bit when using i MCS rank.

Calculate the quantity that is included in the sign indicating number in the code book by formula (3), the quantity of the resource size that each MCS rank that formula (3) use utilizes formula (2) to calculate can be distributed.

N_code＝Sum(N_RU_req(i))....................................(3)

Wherein, N_code is included in the quantity of the sign indicating number in the code book, and Sum () is and operator the quantity of the resource size that N_RU_req (i) can distribute when being i MCS rank of application.

Therefore, use formula (4) to calculate the amount of bits of the sign indicating number in the code book.

Bit_size_＝Ceil[log2(N_)]..........................................(4)

Wherein, Bit_size is the length of sign indicating number, Ceil[] be to rise operator, and N_ is included in the quantity of the sign indicating number in the code book.

The operation of base station and terminal use code book transmission/receiving resource allocation information is described below with reference to Fig. 2.

With reference to figure 2, in step 201, negotiations process is carried out by signaling in terminal and base station.At this moment, at least one in Indication message and the negotiation acknowledge message consulted in terminal and base station transmission/reception.For example, terminal sends the negotiation Indication message in order to notify desired candidate MCS rank and candidate's grouping dimension, and base station in response sends the negotiation acknowledge message in consulting Indication message.At this moment, when not receiving the negotiation acknowledge message, terminal resends the negotiation Indication message.Alternatively, the base station sends candidate's Indication message in order to notify desired candidate MCS rank and candidate's grouping dimension, and terminal response sends the negotiation acknowledge message in described negotiation Indication message.At this moment, when not receiving the negotiation acknowledge message, the base station resends the negotiation Indication message.Based on the purpose of the operation of exemplary embodiment of the present invention, can omit transmission/reception of consulting acknowledge message.

In step 203, terminal and base station are according to process determined candidate MCS rank and candidate's grouping dimension produce code book through consultation.At this moment, terminal and base station produce code book according to predetermined rule, so terminal and base station have same code book.In more detail, after being each MCS level calculation resource size, terminal and base station use formula (1) to (4) to calculate the variable that is used to produce code book, and give the combination assigned code of MCS rank and resource size.After producing code book, in order to carry out data communication, the base station assigns resource is given terminal.In addition, in step 205, the base station uses code book to produce resource allocation information.That is, the base station produces the resource allocation information of the sign indicating number that comprises code book.In step 207, the base station transmission that has produced resource allocation information comprises the resource allocation information of described sign indicating number to terminal.Correspondingly, in step 209, terminal uses code book to determine to distribute to the resource of this terminal, and in step 211, passes through the resource of being distributed, and sends data to base station/receive from base station data.

In Fig. 2, base station and terminal directly produce code book.Yet according to exemplary embodiment of the present invention, base station and terminal can be used a code book of definition in advance.In this case, base station and terminal are by selecting one corresponding to the code book of the candidate MCS rank of determining by the negotiations process of step 201 and candidate's grouping dimension and load selected code book and produce the code book that is used to produce and read resource allocation information from a plurality of store the code book.Yet when storing when not having a code book corresponding to process determined candidate MCS rank and candidate's grouping dimension through consultation in the code book a plurality of, base station and terminal produce code book.

Resource allocation information based on code book can be used to organize resource allocation (GRA) scheme and common single resource allocative decision.The GRA scheme is to be used for by replacing indicating the identifying information of each terminal to reduce the technology of the expense of resource allocation information with a plurality of terminal bindings to a group and by bitmap.That is, when using GRA, the base station indicates whether to each the terminal distribution resource that is included in the group by bitmap, and only sends resource allocation information at least one terminal that is assigned with resource.Therefore, when using GRA, the base station should notification package be contained in terminal in the group corresponding to the bit position of each terminal.In other words, the base station should notify which bit in the bit in the terminal bitmap corresponding to each terminal.

Fig. 3 is the figure of diagram according to the group message arrangement in the system of broadband wireless communication of exemplary embodiment of the present invention.For the convenience of describing, be called as " group message " according to the message that comprises resource allocation information of GRA scheme.

With reference to figure 3,310 indications of user's bitmap are assigned with the terminal of resource, and resource allocation bitmap 320 is expressed the MCS rank and the resource size of institute's Resources allocation.Yet, be different from the diagram of Fig. 3, can omit user's bitmap 310, can use one whether to represent the bitmap of Resources allocation, MCS rank and resource size simultaneously.

With reference to group message shown in Figure 3, first bit of user's bitmap 310 is corresponding to terminal A, and second bit is corresponding to terminal B, and the 3rd bit is corresponding to terminal C, and the 4th bit is corresponding to terminal D.Therefore because first bit of user's bitmap 310 and the 3rd bit are set as " 1 ", have received the terminal A of group message and terminal C and recognized and oneself distributed resource to them.Correspondingly, terminal A and terminal C utilize resource allocation bitmap 320 to determine to distribute to their MCS rank and resource size.At this moment, resource allocation bitmap 320 is based on code book.That is, terminal A only supports the MCS rank of limited quantity and the resource size of limited quantity to the group under the terminal D, and uses the code book of the narrow candidate MCS rank of indication and candidate's grouping dimension.Therefore, resource allocation bitmap 320 has the form that wherein connection is included in the sign indicating number in the code book.

That is, supported candidate MCS rank and candidate's grouping dimension of this group determined in the base station, and produces code book according to determined candidate MCS rank and candidate's grouping dimension.After that, when the terminal of the supported scope that is suitable for this group occurred, the base station allowed this terminal to add this group, and notified supported candidate MSC rank and candidate's grouping dimension of this group.Correspondingly, this terminal produces the code book identical with the base station.In Fig. 3, the length of sign indicating number is assumed to be 4.Therefore, terminal A determines whether the b0 of resource allocation bitmap 320 is the sign indicating number that is used for terminal A to b3, and determines to distribute to MCS rank and the resource size of terminal A to b3 by b0.Therefore, terminal A uses the as many a plurality of RU of resource size that begin with resource starting point from this group as the resource of distributing to this terminal A.In addition, terminal C determines whether the b4 of resource allocation bitmap 320 is the sign indicating number that is used for terminal C to b7, and determines to distribute to MCS rank and the resource size of terminal C to b7 by b4.Therefore, terminal C uses the as many a plurality of RU of resource size that begin with next Resource Unit from the RU that distributes to terminal A, as the resource of distributing to this terminal C.

In order to use the resource allocation information based on code book of GRA scheme, supported candidate MCS rank and candidate's grouping dimension should be notified in the base station.At this moment, in order to notify supported candidate MCS rank and candidate's grouping dimension of this group of terminal, a kind of in can making with the following method.

At first, supported candidate MCS rank and candidate's grouping dimension are directly notified by group message in the base station.Here, supported candidate MCS rank and candidate's grouping dimension are comprised in the group message usually, or involved in this group when new user adds this group.

The second, the grouping wide-style that the base station shifts to an earlier date other MCS collection of the various candidate MCS of define and represent level and represents various candidate's grouping dimensions, and MCS set identifier and grouping wide-style identifier merged in the group message.For example, define the MCS collection to list specific other form of candidate MCS level, and define the grouping wide-style with minimum packets size and scope.Here, use independent broadcast to send the information of the MCS collection and the grouping wide-style of definition in advance.For example, broadcast can be the message that sends by broadcast channel (BCH), such as downlink channel descriptor (DCD)/uplink channel descriptor (UCD), super-frame header etc.Here, MCS set identifier and grouping wide-style identifier are included in the group message usually, and be perhaps involved when new terminal adding group.

The 3rd, supported candidate MCS rank and candidate's grouping dimension of the fixing group of system designer.In this case, even work as supported candidate MCS rank and the candidate's grouping dimension that the base station is not notified this group of terminal respectively, terminal also can produce code book.

Be used at resource allocation information summarizing the operation of base station and terminal as shown in Figure 4 and Figure 5 under the situation of GRA scheme based on code book.

Fig. 4 is the diagram terminal of the use group resource distribution GRA scheme in the system of broadband wireless communication and the figure of base station according to an exemplary embodiment of the present invention.Illustrate the operation under the situation of the supported candidate MCS rank of group of notifications and candidate's grouping dimension.

With reference to figure 4, in step 401, in order to use the GRA scheme, supported candidate MCS rank and candidate's grouping dimension of group determined in the base station, and produces group code originally according to determined candidate MCS rank and candidate's grouping dimension.At this moment, in order to determine available candidate MCS rank and candidate's grouping dimension of this group, the base station can consider that distribution of sizes, the MCS rank of grouping of type, the appearance of current ongoing business distributes or the like.

In step 403, base station transmission group message, it comprises the information of notifying candidate MCS rank and candidate's grouping dimension.Here, group message not only comprises the information of notifying candidate MCS rank and candidate's grouping dimension, also comprises the information of group adding, user's bitmap and the resource allocation bitmap of indicating terminal A and terminal B.In addition, the information that indication group adds comprises the terminal A that adds this group and traffic identification information and the user's bitmap index assignment information of terminal B.For the convenience of describing, the information that the indication group adds is called as " group adds indication information ".

In step 405, received that group terminal A of message and terminal B determine to be included in candidate MCS rank and the candidate's grouping dimension in this group message, and produced group code according to this candidate MCS rank and candidate's grouping dimension.In step 407, terminal A and terminal B determine to distribute to their MCS rank and resource size by reading the resource allocation bitmap that is included in the group message according to code book.

In Fig. 4, add indication information by group message transmission group.Yet,, can add indication information by independent message transmission group according to exemplary embodiment of the present invention.In this case, terminal A and terminal B determine that by independent message they have added this group, and produce code book according to the candidate MCS rank that transmits by group message and candidate's grouping dimension.

In addition, in Fig. 4, base station and terminal directly produce code book.Yet according to exemplary embodiment of the present invention, base station and terminal can be used a code book of definition in advance.In this case, the base station is by selecting one corresponding to the code book of the candidate MCS rank of determining in the step 401 and candidate's grouping dimension and load selected code book and produce the code book that is used to produce and read resource allocation information from a plurality of store the code book.In addition, terminal is by selecting one corresponding to being included in candidate MCS rank and the code book of candidate grouping dimension and load selected code book produce the code book that be used to produce and read resource allocation information of group in the message.Yet when storing when not having a code book corresponding to candidate MCS rank and candidate's grouping dimension in the code book a plurality of, base station and terminal produce code book.

Fig. 5 is that diagram is according to the terminal of the use GRA scheme in the system of broadband wireless communication of exemplary embodiment of the present invention and the figure of base station.Illustrate the operation under the situation of the supported candidate MCS rank of group of notifications and candidate's grouping dimension.

With reference to figure 5, in step 501, in order to use the GRA scheme, the base station is MCS collection of selection and a grouping wide-style from the grouping wide-style of the MCS collection of definition in advance and definition in advance, and produces group code originally according to selected MCS collection and grouping wide-style.At this moment, in order to select MCS collection and grouping wide-style, the base station can consider that distribution of sizes, the MCS rank of grouping of type, the appearance of current ongoing business distributes or the like.

In step 503, the base station sends the broadcast of MCS collection that comprises definition in advance and the information of dividing into groups wide-style.This broadcast comprises that all MCS set identifier and grouping wide-style identifier and representative are by the candidate MCS rank of MCS set identifier representative with by the information of the grouping dimension scope of grouping wide-style identifier representative.For example, this broadcast can be the message such as UD/UCD, super-frame header or the like that sends by BCH.At this moment, although the specific transmission point of not shown broadcast sends this broadcast periodically.

In step 505, the base station sends the group message that comprises MCS set identifier and grouping wide-style identifier.Here, group message not only comprises MCS set identifier and grouping wide-style identifier, comprises that also the group of terminal A and terminal B adds indication information, user's bitmap and resource allocation bitmap.In addition, group adds identifying information and the user's bitmap index assignment information that indication information comprises the business of the terminal A that adds this group and terminal B.

In step 507, received group terminal A of message and terminal B and determined to be included in MCS rank identifier and grouping wide-style identifier in the group message, and according to MCS rank identifier and grouping wide-style identifier produce group code this.In step 509, terminal A and terminal B are included in the resource allocation bitmap of group in the message determines to distribute to their resource according to this code book MCS rank and resource size by reading.

In Fig. 5, add indication information by group message transmission group.Yet,, can add indication information by independent message transmission group according to exemplary embodiment of the present invention.In this case, terminal A and terminal B determine that by independent message they have added this group, and produce code book according to MCS rank identifier that transmits by group message and grouping wide-style identifier.

In addition, in Fig. 5, base station and terminal directly produce code book.Yet according to exemplary embodiment of the present invention, base station and terminal can be used a code book of definition in advance.In this case, the base station is by selecting one corresponding to the code book of MCS collection of selecting and grouping wide-style and load selected code book and produce the code book that is used to produce and read resource allocation information from a plurality of store the code book in step 501.In addition, terminal is by selecting one corresponding to being included in MCS set identifier and the code book of grouping wide-style identifier and load selected code book produce the code book that be used to produce and read resource allocation information of group in the message.Yet when storing when not having a code book corresponding to MCS collection and grouping wide-style in the code book a plurality of, base station and terminal produce code book.

In Fig. 4 and Fig. 5, notice is used for producing the candidate MCS rank of group code basis and the information of candidate's grouping dimension is included in group message.Yet,, can send the information of notifying candidate MCS rank and candidate's grouping dimension by independent message according to exemplary embodiment of the present invention.That is, be independent of the group resource allocation message of the resource of the terminal that is used for assign group, use " set of configuration messages ", it transmits the information that group of notifications adds indication, candidate MCS rank, candidate's grouping dimension, bitmap index assignment information.Set of configuration messages is used as the part of MAP message or transmits as independent medium access control (MAC) administrative messag.For example, under the situation of the group of the automatic repetitive requests of application mix (HARQ) technology, the group resource allocation message comprises the field shown in the table 3, and set of configuration messages comprises the field shown in the table 4

Table 3

Grammer	Note
		Resource Offset	Indication is to the initial LRU of the resource allocation of this group.
ACK Channel Offset	Indicate ACK index initial of the distribution that in this superframe, is used to be scheduled in this group.
		HARQ ReTx Indicator	Indicating this group resource allocation IE whether to be used for HARQ retransmits and initialization.
User Bitmap Size	User's bitmap size; If user's bitmap size is included among configuration messages/A-MAP IE, then can not need.
		User Bitmap	The user's who is scheduled in the indication group bitmap.The size of bitmap equals user's bitmap size.
Resource Allocation Bitmap	Indication is used for the bitmap of each user's who is scheduled MCS/ resource size.
		Padding	Fill, to reach byte boundary.
MCRC	16 bit-masks CRC.

Table 4

Grammer	Note
		Group ID	The indication group index.
MCS Set ID	Indication is selected from the MCS collection of supporting in the group of [predetermined candidate MCS collection] [the candidate MCS collection of the configuration in additional broadcast message].
		HARQ Burst Size Set ID	Indicate the HARQ data burst set of dimensions of being supported in the group of the candidate HARQ data burst set of dimensions that is selected from the configuration in the additional broadcast message.
Long TTI	The use of the long TTI of indication.
		User Bitmap Index	User's bitmap index of indication AMS.AMS can have a plurality of user's bitmap indexs in the group.
Initial ACID	Indication is used to organize ACID initial of resource allocation.

Grammer	Note
		N_ACID	Indication is used to organize the quantity of the ACID of resource allocation.
Padding	Fill, to reach byte boundary.
		MCRC	16 bit-masks CRC.

The base station can use set of configuration messages and group resource allocation message to carry out based on the resource allocation of organizing.That is, allowing under the situation of terminal adding group for downlink communication and uplink communication, the base station sends set of configuration messages.In addition, base station transmission group resource allocation message when Resources allocation.At this moment, resource allocation message can be included in user's private resource distribution of MAP message.At this moment, the indication of group resource allocation message has been assigned with the terminal of resource, the size of institute's Resources allocation, the MCS rank of being distributed or the like.At this moment, base station and terminal produce the code book of group by following process.

The base station by based on the resource allocation of group according to make half dynamic assignment of easily carrying out the resource size such as the configuration set of MCS collection (=candidate MCS rank) and burst size collection (=candidate grouping dimension).The MCS collection that will be used to organize is selected in the base station from the set of definition in advance, and is the indication of the terminal in group MCS set identifier (ID) by configuration set information.Under the situation of the MCS of change group collection, the base station may be selected the MCS collection selected once more.In this case, notice is by the MCS collection of set of configuration messages change.For example, can as shown in table 5ly determine the MCS collection in advance.

Table 5

Yet according to the operator's of exemplary embodiment of the present invention purpose, available MCS collection may definition in advance not as shown in table 5, and may dynamically be determined by the base station.When the MCS collection was dynamically determined by the base station, the base station should periodically provide the information of MCS collection to terminal.

In addition, the same with the MCS collection, available burst size collection also can be determined in advance, perhaps can dynamically be determined.Similarly, when the burst size collection was dynamically determined, the base station should periodically provide the information of burst size collection to terminal.

After MCS set that identifies group and burst size collection, the combination that MCS rank that base station and terminal use group are supported and burst size produce MCS rank and burst size, that is, be included in the MCS rank burst size concentrated that MCS concentrates with being included in burst size.In addition, base station and terminal use described combination to come configuration form, and the example of described combination has been shown in the table 6.

Table 6

MCS/ data burst size	??S1	?S2	…	B (the highest burst size)
					??L1	??C(1，1)	?C(1，2)	…	??C(1，B)
??L2	??C(2，1)	?C(2，2)	…	??C(2，B)
					??…	??…	?…	…	??…
M (the highest MCS)	??C(M，1)	?C(M，2)	…	??C(M，B)

Wherein, the transverse axis representative is the burst size of unit with the byte, and the longitudinal axis is represented the MCS rank.Use every kind of combination of index sign of MCS other index of level and burst size.

Disposed after the table 6 the useless combination of base station and terminal deletion.Promptly, in all combinations that are included in table 6, although described combination has different burst size for identical MCS rank, but there is the combination that needs same resource size, and it is same, although described combination has different MCS ranks for same burst pulse size, there is the combination that needs same resource size.Therefore, base station and the useless combination of terminal deletion all or part can make the code length optimization of code book like this.

At first, though base station and terminal need to determine the useless combination in the combination of the identical resource size of different MCS rank needs.In other words, about each burst size, that is, and in every row, when existence required the combination of following resource size, this combination was selected as the element of the first useless combination of sets: described resource size is measure-alike with the resource with MCS level other combination lower than the MCS rank of this combination.This uses formula (5) expression.

{ C (m, b) } if → U1 N (m, b)=N (n, b) m＞n.............................. (5) wherein

Wherein, C (m b) is the combination of m MCS rank and b burst size, and U1 is the first useless combination of sets, and N (m is by the employed resource size of the combination of m MCS rank and b burst size b).

In addition, about each MCS rank, that is, and at each row, when existence required the combination of following resource size, this combination was selected as the element of the second useless combination of sets: described resource size is measure-alike with the resource of the combination with burst size littler than the burst size of this combination.This uses formula (6) expression.

{ C (m, b) } if → U2 N (m, b)=N (m, d) b＞d.............................. (6) wherein

Wherein, C (m b) is the combination of m MCS rank and b burst size, and U2 is the second useless combination of sets, and N (m b) is the employed resource size of combination of m MCS rank and b burst size.

After the definite first useless combination of sets and the second useless combination of sets, that is, determine all useless combinations after, base station and terminal are determined effective combination of sets by the deletion first useless combination of sets and the second useless combination of sets from all combinations.This uses formula (7) expression.

E＝C-U1-U2......................................................(7)

Wherein, E is effective combination of sets, and C is the set that comprises all combinations, and U1 is the first useless combination of sets, and U2 is the second useless combination of sets.

Here, easy for what operate, can only delete in the first useless combination of sets and the second useless combination of sets.For example, the only deletion first useless combination of sets from all combinations of terminal is closed in the base station, and remaining combination is used as effective combination of sets.

At last, each in being included in effective combination of sets effectively makes up assigned code.At this moment, according to the described sign indicating number of predetermined regular allocation.For example, for effective combination, from table 6 from left upper end to right-hand or below order assignment sign indicating number.That is, can begin according to the ascending order assigned code from combination with minimum MCS rank and minimal burstiness pulse size.Described sign indicating number is used for indexed resource size and other combination of MCS level.At this moment, can be by using and optimized Ceil{log2 (the effectively quantity of combination) at the quantity of effective combination } determine the length of perhaps using the value of definition in advance to determine yard.

When according to generation group as mentioned above, the base station produces code book.In addition, add this group in order to allow terminal, the base station is included in the resource allocation bitmap organized in resource distribution message to terminal so that terminal can read by set of configuration messages transmission group information.In other words, the base station sends to terminal and is used to produce group code information originally, the i.e. information of MCS collection and burst size collection.Correspondingly, terminal obtains the information of this MCS collection and burst size collection, and produces group code then originally.At this moment, according to exemplary embodiment of the present invention, the base station can send the information of group code basis self rather than MCS collection and burst size collection.In this case, because the expense that set of configuration messages caused increase, and because the disappearance of the service load of the terminal that this generation of group code is caused.

If the scope of the MCS rank of terminal or resource size offset groups code book, then this terminal of deletion from group.In order to make it possible to this terminal of deletion from group, the base station uses the bitmap index of terminal to indicate this deletion by the group resource allocation message.

As mentioned above, the resource allocation information based on code book can be used to the GRA scheme.The sign indicating number that is included in the code book is different from the MCS rank of specific quantity and the combination of grouping dimension.At this moment, may have the terminal of using following grouping: the quantity of described grouping identical but be based on whether compressed header and whether added secure fields and the size value of described grouping by overall offset.For example, terminal A uses the grouping of size range in 16 byte to 42 bytes, owing to added the secure fields that is of a size of 16 bytes, terminal B can use size range in 36 (=16+16) byte to the 58 (=42+16) groupings of byte.In this case, because terminal A and terminal B should not belong to same group, so they can be by adding group or the resource allocation information based on code book by using independent Resource Allocation Formula to use exemplary embodiment of the present invention to propose that uses different code books respectively.Yet according to exemplary embodiment of the present invention, terminal A and terminal B can communicate in same group.

Terminal A and terminal B use the grouping dimension of same quantity.Yet employed grouping dimension of terminal A and the employed grouping dimension of terminal B have the value that is offset.So, when this grouping dimension scope of grouping dimension scope and terminal A of group code is consistent, apply deviant jointly to group code grouping dimension originally, like this, terminal B can use group code.For this purpose, terminal A, terminal B and base station should be shared deviant each other.Usually, because whether will consult header compression and whether increase secure fields when Business Stream is produced, so deviant can be calculated in terminal B and base station.Yet, because terminal A can not calculate deviant, so the base station should be notified to this deviant the terminal that comprises the terminal A that joins this group by independent signaling.For example, in order to share deviant, the base station merges to the deviant of terminal B in the group message.

Hereinafter, use is described with reference to the accompanying drawings in further detail based on the base station of the resource allocation information of code book and the structure and the operation of terminal.

Fig. 6 is the flow chart of diagram according to the operating process of the terminal in the system of broadband wireless communication of exemplary embodiment of the present invention.Illustrate the operating process of the terminal of using the single resource allocative decision.

With reference to figure 6, in step 601, terminal is carried out the negotiations process that is used to produce code book.In other words, terminal is carried out the negotiations process that is used for determining candidate MCS rank and candidate's grouping dimension.For this purpose, terminal sends at least one of consulting in Indication message and the negotiation acknowledge message.For example, terminal sends consults Indication message to the base station, and receives the negotiation acknowledge message from the base station.Alternatively, terminal receives the negotiation Indication message from the base station, and sends the negotiation acknowledge message to the base station.At this moment, based on the operator's of embodiments of the invention intention, can omit transmission/reception of consulting acknowledge message.

After carrying out negotiations process, terminal produces code book in step 603.At this moment, terminal produces code book according to predetermined rule.In more detail, terminal uses formula (1) to calculate the quantity of the data bit that each RU can send, and uses formula (2) to calculate other resource size of each MCS level.Subsequently, terminal uses formula (3) to calculate will be comprised in the quantity of the sign indicating number in the code book, and use formula (4) to calculate code length.After that, terminal is distributed to sign indicating number the combination of MCS rank and resource size.

After producing code book, in step 605, terminal determines whether to receive resource allocation information.At this moment, resource allocation information comprises described sign indicating number.That is, the base station has the identical code book of code book that is produced with terminal, and uses described sign indicating number to send the resource allocation information of indication MCS rank and resource size.

If determine to receive resource allocation information in step 605, then terminal is determined the resource distributed by reading resource allocation information according to code book in step 607.That is, terminal is searched for the sign indicating number that is included in the resource allocation information in code book, and relies on the sign indicating number that is searched to determine MCS rank and resource size.

After the resource of determining to be distributed, terminal is passed through the resource executive communication that distributed in step 609.After that, terminal is returned step 605 and is repeated active procedure up to finishing with base station communication.

In Fig. 6, terminal directly produces code book in step 603.Yet according to exemplary embodiment of the present invention, terminal can be used a code book of definition in advance.In this case, terminal is by selecting one corresponding to the code book of the candidate MCS rank of determining by the negotiations process of step 601 and candidate's grouping dimension and load selected code book and produce the code book that is used to read resource allocation information from a plurality of store the code book.Yet when storing when not having a code book corresponding to process determined candidate MCS rank and candidate's grouping dimension through consultation in the code book a plurality of, terminal produces code book.

Fig. 7 is the flow chart of diagram according to the operating process of the base station in the system of broadband wireless communication of exemplary embodiment of the present invention.Illustrate the operating process of the base station of using the single resource allocative decision.

With reference to figure 7, in step 701, the negotiations process that is used to produce code book is carried out in the base station.In other words, the negotiations process that is used for determining candidate MCS rank and candidate's grouping dimension is carried out in the base station.For this purpose, the base station sends at least one of consulting in Indication message and the negotiation acknowledge message.For example, the base station sends consults Indication message to terminal, and receives the negotiation acknowledge message of self terminal.Alternatively, the base station receives the negotiation Indication message of self terminal, and sends the negotiation acknowledge message to terminal.At this moment, based on the operator's of embodiments of the invention intention, can omit transmission/reception of consulting acknowledge message.

After carrying out negotiations process, the base station produces code book in step 703.At this moment, the base station produces code book according to predetermined rule.In more detail, the base station uses formula (1) to calculate the quantity of the transmissible data bit of each RU, and uses formula (2) to calculate other resource size of each MCS level.Subsequently, the base station uses formula (3) to calculate will be comprised in the quantity of the sign indicating number in the code book, and use formula (4) to calculate code length.After that, sign indicating number is distributed to the combination of MCS rank and resource size in the base station.

The base station determines whether resource allocation cycle arrives in step 705.For example, be that resource allocation is carried out on the basis with the subframe.

If determine that in step 705 resource allocation cycle arrives, then the base station assigns resource is given terminal in step 707.At this moment, the base station is basic Resources allocation with RU, and Resources allocation within the scope of the resource size of calculating in process determined candidate MCS rank and step 703 through consultation.

After Resources allocation was given terminal, the base station used code book to produce resource allocation information in step 709.In other words, the base station produce by be included in the code book by the formed resource allocation information of sign indicating number.That is, the sign indicating number corresponding to the combination of MCS rank of being distributed and the resource size of being distributed is searched in the base station in code book, and produces the resource allocation information that comprises the sign indicating number that is found.In addition, the base station sends this resource allocation information.

After sending resource allocation information, the resource that the base station is passed through to be distributed in step 711 communicates.After that, the base station turn back to step 705 and repeat current process up to the sign off of terminal.

In Fig. 7, the base station directly produces code book in step 703.Yet according to exemplary embodiment of the present invention, a code book of definition in advance can be used in the base station.In this case, the base station is by selecting one corresponding to the code book by the negotiations process of step 703 determined candidate MCS rank and candidate's grouping dimension and load selected code book and produce the code book that is used to produce resource allocation information from a plurality of store the code book.Yet when storing when not having a code book corresponding to process determined candidate MCS rank and candidate's grouping dimension through consultation in the code book a plurality of, the base station produces code book.

Fig. 8 is the flow chart of diagram according to the operating process of the terminal in the system of broadband wireless communication of exemplary embodiment of the present invention.Illustrate the operating process of the terminal of using the GRA scheme.

With reference to figure 8, terminal determines whether to receive group message in step 801.This group message is the message that is used to organize resource allocation, and it comprises user's bitmap and resource allocation bitmap, and described user's bitmap is used in reference to and is shown in the terminal that has been assigned with resource in the group, and this resource allocation bitmap representative is assigned with the MCS rank and the resource size of resource.

If determine to receive group message in step 801, then terminal determines whether to have indicated group to add in step 803.That is, carry out the indication that group adds by group message.Therefore, terminal determines that whether having comprised group in group message adds indication information and user's bitmap index assignment information.Yet according to exemplary embodiment of the present invention, the indication that group adds can be carried out by single message rather than group message.

If determine to have indicated group to add in step 803, then terminal determines that by group message code book produces information in step 805.Here, code book generation information is included in and is used in the group message produce the code book of terminal and indicate this to organize the information of supported candidate MCS rank and candidate's grouping dimension.That is, group message comprises supported candidate MCS rank and candidate's grouping dimension of this group, can produce code book so that added the terminal of this group.Yet,, can utilize single message rather than group message to receive code book and produce information according to exemplary embodiment of the present invention.

After definite code book produced message, terminal produced code book in step 807.At this moment, terminal produces code book according to predetermined rule.In more detail, terminal uses formula (1) to calculate the quantity of the transmissible data bit of each RU, and uses formula (2) to calculate other resource size of each MCS level.Subsequently, terminal uses formula (3) to calculate will be comprised in the quantity of the sign indicating number in the code book, and use formula (4) to calculate code length.After that, terminal is distributed to sign indicating number the combination of MCS rank and resource size.At this moment, when when this terminal applies deviant, this terminal increases deviant for jointly candidate's grouping dimension, and computational resource size then.

After producing code book, in step 809, terminal reads the resource allocation bitmap that is included in the group message according to code book.That is, terminal extracts the sign indicating number corresponding to this terminal from the resource allocation bitmap, and uses this yard to determine the resource of being distributed.In other words, the sign indicating number in the terminal searching code book, and definite MCS rank and resource size corresponding to this sign indicating number that finds.

After determining the resource of being distributed, the resource that terminal is passed through to be distributed in step 811 communicates.Terminal determines whether to receive group message in step 811, and if in step 813, determine to receive group message, then process turns back to step 809.

In Fig. 8, terminal directly produces code book in step 807.Yet according to exemplary embodiment of the present invention, terminal can be used a code book in the code book that defines in advance.In this case, terminal is by selecting one corresponding to the code book of determined group candidate MCS rank in the step 805 and candidate's grouping dimension and load selected code book and produce the code book that is used to read resource allocation information from a plurality of store the code book.Yet when storing when not having a code book corresponding to the candidate MCS rank of this group and candidate's grouping dimension in the code book a plurality of, terminal produces code book.In addition, according to exemplary embodiment of the present invention, terminal can directly not produce code book and receive code book from the base station.In this case, by being used for determining that the process that is included in the code book information of message replaces step 805 and 807.

Fig. 9 is the flow chart of diagram according to the operating process of the base station in the system of broadband wireless communication of exemplary embodiment of the present invention.Illustrate the operating process of the base station of using the GRA scheme.

With reference to figure 9, in step 901, supported candidate MCS rank and candidate's grouping dimension of group determined in the base station.At this moment, in order to determine supported candidate MCS rank and candidate's grouping dimension of this group, the base station can consider that the distribution of sizes of the grouping of current ongoing type of service, generation, MCS rank distribute or the like.

After definite supported candidate MCS rank and candidate's grouping dimension, the base station produces group code originally in step 903.At this moment, the base station produces code book according to predetermined rule.In more detail, the base station uses formula (1) to calculate the quantity of the transmissible data bit of each RU, and uses formula (2) to calculate other resource size of each MCS level.Subsequently, the base station uses formula (3) to calculate will be comprised in the quantity of the sign indicating number in the code book, and use formula (4) to calculate code length.After that, sign indicating number is distributed to the combination of MCS rank and resource size in the base station.

After producing code book, the base station determines whether resource allocation cycle arrives in step 905.For example, carry out resource allocation in each subframe.

If determine that in step 905 resource allocation cycle arrives, then the base station assigns resource is given the terminal that has added this group in step 907.At this moment, the base station is basic Resources allocation with RU, and within the scope of the resource size that step 901 determined candidate MCS rank and step 903 are calculated Resources allocation.Yet when existence was applied in the terminal of deviant, the base station was for the terminal that is applied in deviant Resources allocation in the scope of the resource size that obtains from the grouping dimension range computation that adds the above deviant.

After Resources allocation, this generation of group code resource allocation bitmap is used in the base station in step 909.In other words, the base station produces the resource allocation information that is formed by the sign indicating number that is included in the code book.That is, the sign indicating number corresponding to the combination of MCS rank of being distributed and the resource size of being distributed is searched in the base station in code book, and produces the resource allocation bitmap that comprises the sign indicating number that is found.Yet when existence was applied in the terminal of deviant, the base station was for the terminal that is applied in described deviant, came searching code according to independent sign indicating number and corresponding relation based on the resource size of described deviant.

The base station determines whether to exist the terminal of new adding group in step 911.If determine not exist the terminal of new this group of adding in step 911, then the base station produces the group message that comprises user's bitmap and resource allocation bitmap, and sends this group message in step 913.

On the contrary, if in step 911, determine there to be the new terminal that adds this group, then in step 915, base station generation group message and send this group message, described group of message comprises that group adds indication information, code book generation information, user's bitmap and resource allocation bitmap.Here, code book generation information is the information of notice determined candidate MCS rank and candidate's grouping dimension in step 901.In addition, group adds user's bitmap index assignment information that indication information comprises the terminal of new this group of adding.Yet according to exemplary embodiment of the present invention, group adds indication information and code book generation information can send by single message rather than group message.

After transmission group message, the resource that the base station is passed through to be distributed in step 917 communicates.After that, process turns back to step 905 and repeats current process and disappears up to this group.

In Fig. 9, the base station directly produces code book in step 903.Yet according to exemplary embodiment of the present invention, a code book of definition in advance can be used in the base station.In this case, the base station is by selecting one corresponding to the code book of determined group candidate MCS rank in the step 901 and candidate's grouping dimension and load selected code book and produce the code book that is used to produce resource allocation information from a plurality of store the code book.Yet when storing when not having a code book corresponding to the candidate MCS rank of this group and candidate's grouping dimension in the code book a plurality of, the base station produces code book.In addition, according to exemplary embodiment of the present invention, the base station can provide the code book that produces in the step 903 to terminal.In this case, code book generation information is replaced by code book information in step 915.

Figure 10 is the flow chart of diagram according to the operating process of the terminal in the system of broadband wireless communication of exemplary embodiment of the present invention.Illustrate the operating process of the terminal of using the GRA scheme.

With reference to Figure 10, in step 1001, terminal determines whether to receive broadcast.Here, broadcast is sent periodically by the base station and comprises and be used for the system information that terminal communicates.For example, transmit broadcast by BCH such as DCD/UCD, super-frame header etc.

If in step 1001, determine to receive broadcast, then in step 1003 terminal determine to be included in the broadcast the MCS collection and the grouping wide-style information.That is, this broadcast comprises all MCS set identifier and grouping wide-style identifier, and comprises that representative is by the candidate MCS rank of MCS set identifier representative with by the information of the grouping dimension scope of grouping wide-style identifier representative.Correspondingly, terminal can identify the corresponding relation between MCS set identifier and the candidate MCS rank, and the corresponding relation of grouping wide-style designator and candidate's grouping dimension.

On the contrary, if determine not receive broadcast in step 1001, then process proceeds to step 1005.

Terminal determines whether to receive group message in step 1005.This group message is the message that is used to organize resource allocation, and the resource allocation bitmap that comprises user's bitmap of the terminal that has been assigned with resource in the indication group and represent the MCS rank and the resource size of institute's Resources allocation.

If determine not receive group message in step 1005, then process turns back to step 1001.

On the contrary, if determine to receive group message in step 1005, then terminal determines whether to have indicated group to add in step 1007.That is, carry out group and add indication by group message.So terminal determines that whether having comprised group in group message adds indication information and user's bitmap index assignment information.Yet according to exemplary embodiment of the present invention, group adds indication and can carry out by single message rather than group message.

If determine not receive group message in step 1007, then process turns back to step 1001.

On the contrary, if determine to have indicated group to add in step 1007, then terminal determines that by group message code book produces information in step 1009.Here, code book generation information is comprised in the group message producing the code book of terminal, and represents the MCS set identifier and the grouping wide-style identifier of this group according to embodiments of the invention.That is, group message comprises the MCS set identifier of the MCS collection of indicating this group and indicates the grouping wide-style identifier of the grouping wide-style of this group can produce code book so that add the terminal of this group.Yet according to exemplary embodiment of the present invention, code book produces information and can receive by single message rather than group message.

After definite code book generation information, terminal produces code book in step 1011.That is, after the candidate MCS rank and candidate's grouping dimension determined corresponding to MCS set identifier and grouping wide-style identifier, terminal produces code book.At this moment, terminal produces code book according to predetermined rule.In more detail, terminal uses formula (1) to calculate the quantity of the transmissible data bit of each RU, and uses formula (2) to calculate other resource size of each MCS level.Subsequently, terminal uses formula (3) to calculate will be comprised in the quantity of the sign indicating number in the code book, and use formula (4) to calculate code length.After that, terminal is distributed to sign indicating number the combination of MCS rank and resource size.At this moment, when when this terminal has applied deviant, this terminal joins deviant in candidate's grouping dimension jointly, and computational resource size then.

After producing code book, terminal reads the resource allocation message that is included in the group message according to code book in step 1013.That is, terminal extracts the sign indicating number corresponding to this terminal from the resource allocation bitmap, and uses this yard to determine the resource of being distributed.In other words, terminal is searched for this sign indicating number in code book, and determines MCS rank and resource size corresponding to the sign indicating number that is found.

After determining the resource of being distributed, the resource that terminal is passed through to be distributed in step 1015 communicates.Terminal determines whether to receive group message in step 1017, and if in step 1017, determine to receive group message, then process turns back to step 1013.

In Figure 10, terminal directly produces code book in step 1011.Yet according to exemplary embodiment of the present invention, terminal can be used a code book of definition in advance.In this case, terminal is by selecting one corresponding to the code book of the MCS set identifier of determined this group in the step 1009 and the wide-style identifier that divides into groups and load selected code book and produce the code book that is used to read resource allocation information from a plurality of code books of storing.Yet when storing when not having a code book corresponding to the MCS set identifier of this group and grouping wide-style identifier in the code book a plurality of, terminal produces code book.In addition, according to exemplary embodiment of the present invention, terminal can directly not produce code book, and receives code book from the base station.In this case, step 1009 and 1011 is by being used for determining that the process that is included in the code book information of message replaces.

Figure 11 is the flow chart of diagram according to the operating process of the base station in the system of broadband wireless communication of exemplary embodiment of the present invention.Illustrate the operating process of the base station of using the GRA scheme.

With reference to Figure 11, in step 1101, base station selected group MCS collection and grouping wide-style.In other words, a MCS collection and a grouping wide-style are selected in the base station from the grouping wide-style of the MCS collection of definition in advance and definition in advance.At this moment, in order to select MCS collection and grouping wide-style, the base station can consider that the distribution of sizes of current ongoing type of service, occurent grouping, MCS rank distribute or the like.

After selecting MCS collection and grouping wide-style, the base station produces group code originally in step 1103.That is, after the candidate MCS rank and candidate's grouping dimension determined corresponding to MCS set identifier and grouping wide-style identifier, the base station produces code book.At this moment, the base station produces group code originally according to predetermined rule.In more detail, the base station uses formula (1) to calculate the quantity of the transmissible data bit of each RU, and uses formula (2) to calculate other resource size of each MCS level.Subsequently, the base station uses formula (3) to calculate will be comprised in the quantity of the sign indicating number in the code book, and use formula (4) to calculate code length.After that, sign indicating number is distributed to the combination of MCS rank and resource size in the base station.

The base station determines whether the broadcast cycle of transmitting arrives in step 1105.Here, broadcast is sent periodically by the base station and comprises the system information that is used for the terminal executive communication.For example, utilize BCH to transmit broadcast such as DCD/UCD, super-frame header.

Arrive if determine the transmission cycle of broadcast in step 1105, then the base station sends broadcast in step 1107, and this broadcast comprises the information of available MCS collection and grouping wide-style.That is, this broadcast comprises all MCS set identifier and grouping wide-style identifier, and comprises that representative is by the candidate MCS rank of MCS set identifier representative with by the information of the grouping wide-style of grouping wide-style identifier representative.Correspondingly, terminal can identify corresponding relation between MCS set identifier and the candidate MCS rank and the corresponding relation between grouping wide-style identifier and the candidate's grouping dimension.

On the contrary, do not arrive if determine the transmission cycle of broadcast in step 1105, then process proceeds to step 1109.

The base station determines whether resource allocation cycle arrives in step 1109.For example, each superframe is carried out resource allocation.

If determine that in step 1109 resource allocation cycle does not arrive, then process turns back to step 1105.

If determine that in step 1109 resource allocation cycle arrives, then the base station assigns resource is given the terminal that has added this group in step 1111.At this moment, the base station is basic Resources allocation with RU, and Resources allocation in the scope of the resource size of being calculated in selected MCS collection and the step 1103 in step 1101.Yet when existence was applied in the terminal of deviant, the base station was for the terminal that is applied in deviant, Resources allocation in the scope of the resource size that adds the above deviant.Yet when existence was applied in the terminal of deviant, the base station was for the terminal that is applied in deviant, Resources allocation in the scope of the resource size that obtains from the grouping dimension range computation that adds the above deviant.

After Resources allocation, this generation of group code resource allocation bitmap is used in the base station in step 1113.In other words, the base station produces the resource allocation information that is formed by the sign indicating number that is included in the code book.That is, the sign indicating number corresponding to the combination of MCS rank of being distributed and the resource size of being distributed is searched in the base station in code book, and produces the resource allocation bitmap that comprises the sign indicating number that is found.Yet when existence was applied in the terminal of deviant, the base station was for the terminal that is applied in described deviant, came searching code according to independent sign indicating number and corresponding relation based on the resource size of described deviant.

The base station determines whether to exist the terminal of new adding group in step 1115.If determine not exist the terminal of new this group of adding in step 1115, then the base station produces the group message that comprises user's bitmap and resource allocation bitmap, and sends this group message in step 1117.

On the contrary, if in step 1115, determine to exist the new terminal that adds this group, then in step 1119, base station generation group message and send this group message, described group of message comprises that group adds indication information, code book produces information, user's bitmap and resource allocation bitmap.Here, code book generation information be the notice in step 1101 selected MCS collection and the grouping wide-style information.In addition, group adds user's bitmap index assignment information that indication information comprises the terminal of new this group of adding.Yet according to exemplary embodiment of the present invention, group adds indication information and code book generation information can transmit by single message rather than group message.

After transmission group message, the resource that the base station is passed through to be distributed in step 1121 communicates.After that, the base station turns back to step 1109 and repeats current process and disappears up to this group.

In Figure 11, the base station directly produces code book in step 1103.Yet according to exemplary embodiment of the present invention, a code book of definition in advance can be used in the base station.In this case, the base station is by selecting one corresponding to the code book of the MCS collection of determined this group in the step 1101 and grouping dimension wide-style and load selected code book and produce the code book that is used to produce resource allocation information from a plurality of store the code book.Yet when storing when not having a code book corresponding to the MCS collection of this group and grouping dimension wide-style in the code book a plurality of, the base station produces code book.In addition, according to exemplary embodiment of the present invention, the base station can provide the code book that produces in the step 1103 to terminal.In this case, code book generation information is replaced by code book information in step 1119.

Figure 12 is diagram according to the flow chart that produces the process of code book in the system of broadband wireless communication of exemplary embodiment of the present invention in base station and end.The code book that can be applied to Fig. 8 to Figure 11 with reference to the described code book production process of Figure 12 produces step.In the explanation of Figure 12, base station and terminal are called as " code book generator ".

With reference to Figure 12, the MCS collection of code book generator use group and burst size collection produce the form that comprises all combinations in step 1201.At this moment, when the code book generator is the base station, because the base station is at the MCS collection of himself determining this group and burst size collection, so the process that the base station need not be independent just can be discerned MCS collection and burst size collection.On the contrary, when the code book generator was terminal, terminal was discerned MCS collection and burst size collection by the MCS set identifier and the burst size identifier that are included in from the set of configuration messages that the base station receives.That is, terminal is used corresponding to the MCS set identifier of available MCS collection and burst size collection and the MCS collection and the burst size collection of burst size identifier.At this moment, available MCS collection and burst size collection determined in advance, or by determining and periodically understood in the base station.

After generation comprised the form of all combinations, in step 1203, the code book generator was deleted all the other combinations except having other combination of minimum MCS level from the combination that needs the same asset size for each burst size.In other words, although use different MCS ranks for the burst of same size, the code book generator is deleted all the other combinations except having other combination of minimum MCS level from the combination of the identical resource size of needs.That is, the code book generator is deleted MCS level difference wherein to the not useless combination of influence of resource size.

In step 1205, the code book generator is deletion all the other combinations except the combination with minimal burstiness pulse size from the combination that needs identical resource size for each MCS rank.In other words, although use identical MCS rank for the burst of different size, the code book generator is deleted all the other combinations except the combination with minimal burstiness pulse size from the combination that needs the same asset size.That is, the code book generator is deleted burst size difference wherein to the not useless combination of influence of resource size.

After the useless combination of deletion, the code book generator is distributed to remaining each effective combination with sign indicating number in step 1207.At this moment, according to predetermined regular allocation sign indicating number.In addition, Ma length can be confirmed as the Ceil{log2 (effectively combination quantity) at the quantity optimization of effective combination } or the value that is confirmed as defining in advance.

In each exemplary embodiment of the present invention of describing with reference to figure 7 to 12, comprise the sign indicating number of the combination of indication MCS rank and resource size by the code book of base station and terminal generation.At this moment, the unit of resource size is the quantity of RU.Because the unit of resource size is the quantity of RU, so the type of the resource size that is instructed to reduces, Ma length has just reduced like this.Simultaneously, compare the quantity of the resource that is used to send burst, may distribute the resource of bigger quantity, fill, therefore the waste of resource takes place thereby residual resource is carried out 0.

Therefore, according to exemplary embodiment of the present invention, for fear of 0 filling, the quantity of data tones rather than RU is used as the unit of resource size.Here, tone is the unit of the resource that formed by a subcarrier and time code element.In this case, the MCS collection and the burst size collection of base station and terminal use group dispose all possible combination, and sign indicating number are distributed to each combination then.At this moment, according to predetermined regular allocation sign indicating number.In addition, Ma length is confirmed as at Ceil{log2 (quantity of combination) that may Combinatorial Optimization } or the value that is confirmed as defining in advance.

Use the sign indicating number that is produced as mentioned above, base station notice MCS rank and burst size, terminal use described MCS rank and burst size to calculate the resource size that is used to transmit burst.For example, the quantity by determining the data bit of each tone for relevant MCS rank, with burst size divided by the quantity of the data bit of each tone and carry out ascending order and operate the computational resource size.

That is, when the assign group resource, the base station notice is allocated for the starting point of the resource area of relevant group, indicates MCS rank and the burst size that is assigned with the terminal of resource and indicates each terminal by the resource allocation bitmap by user's bitmap.The resource deterministic process of the resource allocation process of base station and terminal is as follows.

Figure 13 is the flow chart of diagram according to the resource allocation process of the group of base stations in the system of broadband wireless communication of exemplary embodiment of the present invention.Illustrate unit in the resource size indicated and be the operating process of the base station under the situation of data tones by sign indicating number.

With reference to Figure 13, the resource area of group is determined in the base station in step 1301.That is, in the resource of the finite part of subframe inside, carry out the GRA scheme.So the base station is identified for the part resource area of this group in the resource of subframe inside.

After the resource area of determining this group, the base station sends the control information of the resource area of notifying this group in step 1303.Here, control information comprises the information of the starting point of notifying resource area, and for example, being represented as with RU is the form of the deviant of unit.At this moment, control information only is transmitted to the terminal that has added this group or sends all terminals to.For example, be transmitted in control information under the situation of all terminals, utilize the broadcast communicating control information, described broadcast transmits by the BCH such as DCD/UCD, super-frame header etc.In addition, only be transmitted in control information under the situation of the terminal that has added this group, utilization group message communicating control information, described group of message comprises the resource allocation information of this group.

The burst size and the MCS rank of the terminal that each has added this group determined in the base station in step 1305.Here, channel quality, data transfer rate, the type of service of considering each terminal waits to determine burst size and MCS rank.At this moment, determine burst size and MCS rank, so that calculate the resource size of each terminal.Here, the unit of resource size is a data tones.

After definite burst size and MCS rank, the resource in the resource area of organizing is somebody's turn to do in the base station according to the user ID order assignment in step 1307.Here, user ID is used to identify the terminal that adds this group in this group, and carry out to reference to the similar function of figure 8 to 12 described bitmap indexs.In other words, the resource size of the calculating of each terminal is determined by determining burst size and MCS rank in the base station, and begins by resource size Resources allocation according to the starting point of user ID order from resource area subsequently.At this moment, because the resource size calculation so a plurality of terminal can be divided a RU, and can be assigned with the RU that this is divided with reference to being burst size.

After Resources allocation, the base station indicates the sign indicating number of the resource of distributing to each terminal to produce the resource allocation bitmap by listing according to the order identical with the resource allocation order in step 1309.In addition, the base station produces user's bitmap that indication has been assigned with the terminal of resource.

Base station generation group message and send this group message in step 1311, described group of message comprises resource allocation bitmap and user's bitmap.

Figure 14 is the flow chart of diagram according to the resource deterministic process of the terminal of adding group in the system of broadband wireless communication of exemplary embodiment of the present invention.Illustrate unit in the resource size indicated and be the operating process of the terminal under the situation of data tones by sign indicating number.

With reference to Figure 14, terminal determines whether to receive group message in step 1401.This group message is the message that is used to organize resource allocation, and comprise the terminal that has been assigned with resource in the indication group user's bitmap and the representative by the resource allocation bitmap of the MCS rank of institute's Resources allocation and resource size.In addition, this group message can comprise the information of the resource area of indicating this group.

If determine to receive group message in step 1401, then terminal reads resource allocation sign indicating number corresponding to the user ID littler than the user ID of this terminal in step 1403.That is, come before the resource of distributing to this terminal because distribute to the resource of terminal, so determine to distribute to the position of this terminal based on the resource size of the resource that is assigned to terminal with less user ID with user ID littler than the user ID of this terminal.So terminal is positioned at MCS rank and the burst size of determining to distribute to the resource of the terminal with less user ID corresponding to the sign indicating number before the sign indicating number of this terminal by reading from the resource allocation bitmap.

The terminal dispensed is given the resource size of each terminal in step 1405.That is, terminal uses sign indicating number corresponding to the terminal with less user ID that reads to come dispensed to give to have the resource size of resource of the terminal of less user ID in step 1403.For example, for each sign indicating number, terminal is by determining to come the computational resource size for the quantity of the data bit of relevant other each tone of MCS level, the burst size of will being correlated with divided by the quantity and the computing of execution ascending order of the data bit of each tone.At this moment, the unit of resource size is a data tones.

After the computational resource size, terminal searching is distributed to the starting point of the resource of this terminal in step 1407.That is, terminal is used the starting point of resource area of the group of being calculated in the step 1405 and the starting point that the resource size of distributing to the resource of the terminal with less user ID is searched for the resource of distributing to this terminal.In other words, the terminal resource size that adds the resource of distributing to the terminal with less user ID to the starting point of the resource area of this group by accumulative total ground determines to distribute to the starting point of the resource of terminal.At this moment, the starting point of distributing to the resource of terminal is a data tones.

After the starting point of resource of terminal is distributed in search, in step 1409, terminal is by reading MCS rank and the burst size of determining to distribute to the resource of this terminal corresponding to the sign indicating number of this terminal, and uses described MCS rank and burst size dispensed to give the resource size of this terminal.At this moment, the unit of starting point that distributes to the resource of terminal is a data tones, and the zone of the resource size that begins of the starting point of the resource starting point that occupies from step 1407 to be found.

Figure 15 is the block diagram of diagram according to the terminal in the system of broadband wireless communication of exemplary embodiment of the present invention.

With reference to Figure 15, terminal comprises that radio frequency (RF) receiver 1502, ofdm demodulator 1504, subcarrier separate map unit 1506, data processor 1508, subcarrier map unit 1510, OFDM modulator 1512, RF reflector 1514, message reader 1516, message generator 1518 and controller 1520.

RF receiver 1502 will become baseband signal by the RF conversion of signals that antenna receives.Ofdm demodulator 1504 serves as that the basis is separated baseband signal, removed Cyclic Prefix (CP), is each subcarrier restoring signal by carrying out fast Fourier transform (FFT) then with the OFDM code element.It is difference each subcarrier signals in basis with the process that subcarrier is separated map unit 1506.In addition, subcarrier is separated map unit 1506 provides data-signal to data processor 1508, and the signal that gives information is given message handling device 1516.The data bit line of data processor 1508 by demodulated data signal and channel-decoding are recovered to receive, and by transmitting the data bit line chnnel coding and modulation produces transmission of data signals.Data-signal that subcarrier map unit 1510 will be provided by data processor 1508 and the message signale that is provided by message generator 1518 are mapped to subcarrier.OFDM modulator 1512 will be mapped to subcarrier signals and convert signal in the time domain to by carrying out contrary fast fourier transform (IFFT), and produce the OFDM symbol by inserting CP.RF reflector 1514 is up-converted into the RF signal with the OFDM symbol, and by the described RF signal of antenna transmission.

Message reader 1516 recovers the message bit line from the message signale that is received by the base station.In addition, message reader 1516 determines to be included in information in the message by reading the message bit line, and determined information is offered controller 1520.

More particularly, according to exemplary embodiment of the present invention, message reader 1516 reads the message of the negotiations process that is used for definite candidate MCS rank and candidate's grouping dimension.That is, message reader 1516 use negotiation Indication messages are determined by base station determined candidate MCS rank and candidate's grouping dimension or are used the definite message of negotiation to determine that base station acceptance is by controller 1520 determined candidate MCS rank and candidate's grouping dimensions.In addition, message reader 1516 reads based on the resource allocation message of code book by the code book that provides according to slave controller 1520 and determines the resource of being distributed.

According to exemplary embodiment of the present invention, message reader 1516 determines that by the group message that receives from the base station group adds candidate's grouping dimension of the candidate MCS rank and the group of indication information, user's bitmap assignment information, group.In addition, message reader 1516 determines whether to have distributed resource by being included in user's bitmap of group in the message, and reads the resource allocation bitmap that is included in the group message by the code book that provides according to slave controller 1520 and determine the resource of being distributed.

According to exemplary embodiment of the present invention, message reader 1516 is determined the information of available MCS collection and grouping wide-style by broadcast.In addition, message reader 1516 determines that by group message group adds indication information, user's bitmap assignment information, the MCS set identifier of group, the grouping wide-style identifier of group.In addition, message reader 1516 determines whether to have distributed resource by being included in user's bitmap of group in the message, and reads the resource allocation bitmap that is included in the group message by the code book that provides according to slave controller 1520 and determine the resource of being distributed.

1518 configurations of message generator comprise the message bit line of the information that slave controller 1520 provides, and produce the physical message signal from described message bit line.More particularly, according to exemplary embodiment of the present invention, message generator 1518 produces the message that is used for for the negotiations process of determining candidate MCS rank and candidate's grouping dimension.That is, message generator 1518 produces and is used to accept the candidate MCS rank determined by the base station and the negotiation acknowledge message of candidate's grouping dimension, perhaps produces the negotiation Indication message of informing base station by controller 1520 determined candidate MCS ranks and candidate's grouping dimension.

The all functions of controller 1520 control terminals.For example, controller 1520 control subcarriers are separated map unit 1506 and extract data-signal from message reader 1516 determined resources, and control subcarrier map unit 1510 sends data-signal to the resource that is assigned with.In addition, controller 1520 is carried out corresponding to the process by message reader 1516 determined information, and the information that will be included in the transmission message offers message generator 1518.More particularly, the code book generator 1522 of controller 1520 inside produces the code book that is used to read resource allocation information.In addition, the traffic analyser of controller 1520 inside 1524 is analyzed traffic performances, i.e. the scope of the grouping dimension of Chu Xianing, available MCS rank or the like.

In operation, controller 1520 is carried out the negotiations process that is used for determining candidate MCS rank and candidate's grouping dimension.For this purpose, controller 1520 control messages generators 1518 produce at least one of consulting in Indication message and the negotiation acknowledge message.When producing the negotiation Indication message, controller 1520 considers that the scope and the available MCS rank of the grouping dimension of the appearance analyzed by traffic analyser 1524 determine candidate's grouping dimension and candidate MCS rank, and notification message generator 1518 determined candidate's grouping dimensions and candidate MCS rank.At this moment, based on the operator's of exemplary embodiment of the present invention intention, can omit transmission/reception of consulting acknowledge message.In addition, code book generator 1522 produces code book according to candidate MCS rank and candidate's grouping dimension.In more detail, code book generator 1522 use formula (1) to (4) calculate the transmissible data bit of each RU quantity, other resource size of each MCS level, be included in the quantity and the code length of the sign indicating number in the code book, then sign indicating number is distributed to the combination of MCS rank and resource size.When producing code book, controller 1520 offers message reader 1516 with code book.

According to exemplary embodiment of the present invention, controller 1520 adds indication information according to the group from the group message that message reader 1516 provides and determines whether to have indicated group to add.Fashionable when determining to have indicated group to add, code book generator 1522 produces code book according to the code book generation information that provides from message reader 1516, that is, and and the supported candidate of this group MCS rank and candidate's grouping dimension.In more detail, code book generator 1522 use formula (1) to (4) calculate the transmissible data bit of each RU quantity, other resource size of each MCS level, be included in the quantity and the code length of the sign indicating number in the code book, then sign indicating number is distributed to the combination of MCS rank and resource size.At this moment, terminal is being applied under the situation of deviant, the code book generator 1522 common candidate's grouping dimensions of giving increase deviant, computational resource size then.When producing code book, controller 1520 offers message reader 1516 with code book.

According to exemplary embodiment of the present invention, controller 1520 adds indication information according to the group from the group message that is provided by message reader 1516 and determines whether to have indicated group to add.Fashionable when determining to have indicated group to add, code book generator 1522 produces code book according to the code book generation information that provides from message reader 1516, that is, and and the MCS set identifier of group and grouping wide-style identifier.In more detail, code book generator 1522 uses the information of the MCS collection that receives by broadcast and grouping wide-style to determine corresponding to the candidate MCS rank of the MCS set identifier of this group with corresponding to candidate's grouping dimension of the grouping wide-style identifier of this group.In addition, code book generator 1522 use formula (1) to (4) calculate the transmissible data bit of each RU quantity, other resource size of each MCS level, be included in the quantity and the code length of the sign indicating number in the code book, then sign indicating number is distributed to the combination of MCS rank and resource size.At this moment, deviant is being applied under the situation of terminal, the code book generator 1522 common candidate's grouping dimensions of giving add deviant, then the computational resource size.When producing code book, controller 1520 offers message reader 1516 with code book.

According to above-mentioned two exemplary embodiments of the present invention, the operation of code book generator 1522 can be substituted by following.The MCS collection of code book generator 1522 use groups and burst size produce the form that comprises all combinations.After generation comprises the form of all combinations, code book generator 1522 is deleted all the other combinations except having other combination of minimum MCS level for each burst size from the combination that needs the same asset size, and deletes all the other combinations except the combination with minimal burstiness pulse size for each MCS rank from the combination that needs the same asset size.That is the useless combination of code book generator 1522 deletions.After the useless combination of deletion, code book generator 1522 is distributed to remaining each combination with sign indicating number.At this moment, according to the pre-defined rule assigned code.In addition, Ma length can be defined as the Ceil{log at the quantity optimization of effective combination ₂(effectively combination quantity) } or the value that is confirmed as defining in advance.

According to the structure of Figure 15, controller 1520 offers message reader 1516 with the code book that code book generator 1522 is produced.Yet according to exemplary embodiment of the present invention, controller 1520 can use a code book of definition in advance.In this case, can additionally be provided for storing the code book memory cell (not shown) of the code book of definition in advance.Correspondingly, select in a plurality of code books of controller 1520 by the definition in advance of from the code book memory cell, storing one corresponding to by controller 1520 determined candidate MCS ranks and candidate's grouping dimension or corresponding to the code book of MCS collection and grouping dimension wide-style, and the code book that loads this selection produces the code book that is used to produce resource allocation information.Yet when a plurality of when storing code book that does not exist in the code book corresponding to the MCS collection of this group and scope size range type, code book generator 1522 produces code books.

Figure 16 is the block diagram of diagram according to the base station in the system of broadband wireless communication of exemplary embodiment of the present invention.

With reference to Figure 16, the base station comprises that subcarrier map unit 1602, OFDM modulator 1604, RF reflector 1606, RF receiver 1608, ofdm demodulator 1610, subcarrier separate map unit 1612, data processor 1614, message generator 1616, message reader 1618 and controller 1620.

Data-signal that subcarrier map unit 1602 will provide from data processor 1614 and the message signale that provides from message generator 1618 are mapped on the subcarrier.To be mapped to conversion of signals on the subcarrier be signal on the time domain to OFDM modulator 1604 by carrying out IFFT, and produce the OFDM code element by inserting CP.RF reflector 1608 up-converts to the RF signal with the OFDM symbol, then by antenna transmitting RF signal.RF receiver 1610 will become baseband signal by the RF conversion of signals that antenna receives.Ofdm demodulator 1612 serves as that the basis is separated baseband signal, removes CP, recovered each subcarrier signals by carrying out FFT then with the OFDM code element.It is that each subcarrier signals is distinguished on the basis with the process that subcarrier is separated map unit 1612.In addition, subcarrier is separated map unit 1612 data-signal is offered data processor 1614, and message signale is offered message handling device 1616.Data processor 1614 is by recovering to receive data bit line with demodulated data signal and channel-decoding, and by sending the data bit line chnnel coding and modulation produces the transmission data-signal.

Message reader 1618 recovers the message bit line from the message signale that is received by terminal.In addition, message reader 1618 determines to be included in information in the message by reading the message bit line, and determined information is offered controller 1620.More particularly, according to exemplary embodiment of the present invention, message reader 1618 reads the message that is used for for the negotiations process of determining candidate MCS rank and candidate's grouping dimension.That is, message reader 1618 use negotiation Indication messages are determined by terminal determined candidate MCS rank and candidate's grouping dimension or are used and consult whether definite message is definite is accepted by terminal by base station determined candidate MCS rank and candidate's grouping dimension.

1616 configurations of message generator comprise the message bit line of the information that slave controller 1620 provides, and produce the physical message signal from the message bit line.

More particularly, according to exemplary embodiment of the present invention, message generator 1616 produces the message of the negotiations process that is used for definite candidate MCS rank and candidate's grouping dimension.That is, message generator 1616 produces and is used to accept the candidate MCS rank determined by terminal and the negotiation acknowledge message of candidate's grouping dimension, perhaps produces the candidate MCS rank that notice slave controller 1620 provided and the negotiation Indication message of candidate's grouping dimension.In addition, the resource allocation information that the sign indicating number in the code book that is provided by slave controller 1620 forms is provided the resource allocation result that provides according to slave controller 1620 of message generator 1616.

According to exemplary embodiment of the present invention, message generator 1616 produces the user's bitmap that is assigned with the terminal of resource in the indication group according to the resource allocation result that slave controller 1620 provides, and the resource allocation bitmap that the sign indicating number in the group code basis that is provided by slave controller 1620 forms is provided.In addition, message generator 1616 generation group message, it comprises that group adds indication information, user's bitmap assignment information, the candidate MCS rank of group, candidate's grouping dimension, user's bitmap and the resource allocation bitmap of group.

According to exemplary embodiment of the present invention, message generator 1616 produces broadcast, and it comprises the information of the MCS collection and the grouping wide-style of definition in advance.In addition, message generator 1616 produces the user's bitmap that is assigned with the terminal of resource in the indication group according to the resource allocation result that slave controller 1620 provides, and the resource allocation bitmap that the sign indicating number in the group code basis that is provided by slave controller 1620 forms is provided.In addition, message generator 1616 generation group message, it comprises that group adds indication information, user's bitmap assignment information, the MCS set identifier of group, grouping wide-style identifier, user's bitmap and the resource allocation bitmap of group.

The all functions of controller 1620 control base stations.For example, controller 1620 control subcarriers are separated map unit 1612 and are extracted data-signal according to resource allocation result for each terminal, and control subcarrier map unit 1602 is each terminal mapping (enum) data signal according to resource allocation result.In addition, controller 1620 is carried out corresponding to the process by message reader 1618 determined information, and the information that will be included in the transmission message offers message generator 1616.In addition, the resource allocation unit of controller 1620 inside is according to single resource allocative decision and GRA scheme Resources allocation.More particularly, the code book generator 1624 of controller 1620 inside produces the code book that is used to read resource allocation information.In addition, the traffic analyser 1626 of controller 1620 inside is analyzed traffic performance, and promptly the distribution of sizes of the type of ongoing business, emerging grouping, available MCS rank distribute or the like.

According to exemplary embodiment of the present invention, controller 1620 is carried out the negotiations process that is used for determining candidate MCS rank and candidate's grouping dimension.For this purpose, controller 1620 control messages generators 1616 produce at least one of consulting in Indication message and the negotiation acknowledge message.When producing the negotiation Indication message, controller 1620 considerations are determined candidate's grouping dimension and candidate MCS rank by the traffic performance of the appearance that traffic analyser 1626 is analyzed, and notification message generator 1616 determined candidate's grouping dimensions and candidate MCS rank.At this moment, based on the operator's of exemplary embodiment of the present invention intention, can omit transmission/reception of consulting acknowledge message.In addition, code book generator 1624 produces code book according to candidate MCS rank and candidate's grouping dimension.In more detail, code book generator 1624 use formula (1) to (4) calculate the transmissible data bit of each RU quantity, other resource size of each MCS level, be included in the quantity and the code length of the sign indicating number in the code book, then sign indicating number is distributed to the combination of MCS rank and resource size.When producing code book, controller 1620 offers message generator 1618 with code book.In addition, when resource allocation cycle arrived, resource allocation unit 1622 was given terminal with resource allocation, and controller 1620 offers message generator 1616 with resource allocation result.

According to exemplary embodiment of the present invention, controller 1620 produces group according to the service feature of being analyzed by traffic analyser 1626, and definite group code candidate MCS rank and candidate's grouping dimension originally.Correspondingly, code book generator 1624 produces group code originally.In more detail, code book generator 1624 use formula (1) to (4) calculate the transmissible data bit of each RU quantity, other resource size of each MCS level, be included in the quantity and the code length of the sign indicating number in the code book, then sign indicating number is distributed to the combination of MCS rank and resource size.When producing code book, controller 1620 offers message generator 1616 with code book.In addition, when the terminal that adds this group is selected, resource allocation unit 1622 is provided for the information that the generation group adds indication information to message generator 1616, promptly, user's bitmap index allocation result and terminal information, and candidate's grouping dimension of the candidate MCS rank that will organize and this group offers message generator 1616.In addition, when resource allocation cycle arrived, resource allocation unit 1622 was given terminal with resource allocation, and controller 1620 offers message generator 1616 with the resource allocation result of resource allocation unit 1622.

According to exemplary embodiment of the present invention, the service feature that controller 1620 bases are analyzed by traffic analyser 1626 produces group, and selects group code MCS collection and grouping wide-style originally from the MCS collection of definition in advance and the wide-style that divides into groups.Correspondingly, code book generator 1624 produces group code originally.In more detail, code book generator 1624 use formula (1) to (4) calculate the transmissible data bit of each RU quantity, other resource size of each MCS level, be included in the quantity and the code length of the sign indicating number in the code book, then sign indicating number is distributed to the combination of MCS rank and resource size.When producing group code this time, controller 1620 offers message generator 1616 with code book.In addition, when the terminal that adds this group was selected, resource allocation unit 1622 distributing user bitmap indexs were given terminal.Correspondingly, controller 1620 is provided for the information that the generation group adds indication information to message generator 1616, that is, user's bitmap index allocation result and terminal information, and with the group candidate MCS rank and candidate's grouping dimension of group offer message generator 1616.In addition, when resource allocation cycle arrived, resource allocation unit 1622 was given terminal with resource allocation, and controller 1620 offers message generator 1616 with the resource allocation result of resource allocation unit 1622.In addition, when the transmission cycle of broadcast arrived, the information of MCS collection that controller 1616 will define in advance and grouping wide-style offered message generator 1616.

According to above-mentioned two exemplary embodiments of the present invention, the operation of code book generator 1624 can be substituted by following.The MCS collection of code book generator 1624 use groups and burst size collection produce the form that comprises all combinations.After generation comprises the form of all combinations, code book generator 1624 is deleted all the other combinations except having other combination of minimum MCS level for each burst size from the combination that needs the same asset size, and deletes all the other combinations except the combination with minimal burstiness pulse size for each MCS rank from the combination that needs the same asset size.That is the useless combination of code book generator 1624 deletions.After the useless combination of deletion, code book generator 1624 is distributed to remaining each effective combination with sign indicating number.At this moment, according to the pre-defined rule assigned code.In addition, the length of sign indicating number can be confirmed as the Ceil{log2 (the effectively quantity of combination) at the quantity optimization of effective combination }, perhaps be confirmed as the value that defines in advance.

According to exemplary embodiment of the present invention, the resource area of group is determined in controller 1620 controls, and sends the control information of the resource area of notifying this group.Here, control information comprises the information of the starting point of notifying resource area, and the broadcast that transmits by the BCH that utilizes such as DCD/UCD, super-frame header etc. transmits, and perhaps the group message of the resource allocation information by comprising this group transmits.After that, resource allocation unit 1622 determines that each has added the burst size and the MCS rank of the terminal of this group.Here, channel quality, data transfer rate and the type of service of considering each terminal determined burst size and MCS rank.After definite burst size and MCS rank, resource allocation unit 1622 is somebody's turn to do the resource in the resource area of organizing according to the user ID order assignment.At this moment, because the resource size calculation is with reference to being burst size, therefore a plurality of terminals can be cut apart a RU, and can be assigned with the RU after cutting apart.In addition, controller 1620 offers message generator 1616 with the resource allocation result of resource allocation unit 1622.

With reference to Figure 16, controller 1620 offers message generator 1616 with the code book that code book generator 1624 is produced.Yet according to exemplary embodiment of the present invention, a code book of definition in advance can be used in the base station.In this case, need additionally be provided for storing the code book memory cell (not shown) of the code book of definition in advance.Correspondingly, controller 1620 by select in a plurality of code books of from the code book memory cell, storing one corresponding to by controller 1620 determined candidate MCS ranks and candidate's grouping dimension or corresponding to the MCS collection of this group and the code book of grouping dimension wide-style, and the code book that loads this selection produces the code book that is used to produce resource allocation information.Yet when a plurality of when storing code book that does not exist in the code book corresponding to the MCS collection of this group and grouping dimension wide-style, code book generator 1624 produces code books.

In system of broadband wireless communication, use resource allocation information, so that can minimize because the expense that resource allocation information caused based on the code book generation of narrow MCS rank of indication and resource size.

Though reference exemplary embodiment of the present invention is showed and described the present invention, those skilled in the art are to be understood that: can carry out therein under not breaking away from by the situation of claims and the scope and spirit of the present invention that equivalent limited thereof in form and the various changes on the details.

Claims (25)

1. method that is used at system of broadband wireless communication operate wireless node, described method comprises:

Be identified for producing Modulation and Coding Scheme (MCS) the rank collection and the burst size collection of code book;

Use described MCS rank collection and described burst size collection to produce code book; And

Produce or read resource allocation information according to described code book.

2. device that is used at system of broadband wireless communication operate wireless node, described device comprises:

Controller is used to be identified for producing Modulation and Coding Scheme (MCS) the rank collection and the burst size collection of code book, and is used for by using described MCS rank collection and burst size collection to produce code book; With

Message handling device is used for producing or read resource allocation information according to described code book.

3. the method for claim 1 or device as claimed in claim 2, wherein, described code book is to produce by the code book that loads corresponding to described MCS rank collection and burst size collection from a plurality of code books of definition in advance.

4. the method for claim 1 or device as claimed in claim 2, wherein, described code book is by using described MCS rank collection and burst size collection to determine the resource size of the combination of MCS rank and burst size, and produces that the code book of this combination of indication produces.

5. method as claimed in claim 4 or device, wherein, described code book produces by following manner: the form that produces all combinations that comprise MCS rank and burst size; For each burst size, have outside other combination of minimum MCS level all the other by deletion from the combination that needs the same asset size and make up and delete MCS level difference wherein the not useless combination of influence of resource size; And sign indicating number is distributed to remaining each effective combination.

6. method as claimed in claim 5 or device, wherein, the length of each yard comprises Ceil{log2 (effectively combination quantity) } and the value that defines in advance in one.

7. method as claimed in claim 5 or device, wherein, described sign indicating number begins to be assigned to combination according to ascending order from the combination with minimum MCS rank and minimal burstiness pulse size.

8. the method for claim 1, wherein described radio node comprises terminal, and

Wherein, the step that reads resource allocation information according to code book comprises:

Search is included in the sign indicating number in the resource allocation information in code book; And

Determine MCS rank and resource size corresponding to the sign indicating number that is found.

9. the method for claim 1, wherein described radio node comprises the base station, and

Wherein, described step according to code book generation resource allocation information comprises:

Resources allocation in the MCS rank in being included in code book and the scope of resource size;

Search is corresponding to the sign indicating number of the combination of MCS rank of being distributed and the resource size of being distributed; And

Generation comprises the resource allocation information of the sign indicating number that is found.

10. the method for claim 1, wherein described radio node comprises terminal, and

Wherein, the step of described definite MCS rank collection and burst size collection comprises:

Determine to be included in MCS set identifier and burst size set identifier from the set of configuration messages that the base station receives; And

In the middle of the MCS rank collection of definition in advance and burst size collection, determine corresponding to the MCS rank collection of described MCS set identifier with corresponding to the burst size collection of described burst size set identifier.

11. the method for claim 1, wherein described radio node comprises terminal, and

Wherein, the step of described definite MCS rank collection and burst size collection comprises:

Obtain the information of MCS rank collection and burst size collection by the broadcast that receives from the base station;

Determine to be included in the MCS set identifier of the group from the set of configuration messages that described base station receives and the burst size set identifier of this group; And

Concentrate in the MCS rank collection that obtains by described broadcast and burst size and to determine corresponding to the MCS rank collection of MCS set identifier with corresponding to the burst size collection of burst size set identifier.

12. method as claimed in claim 11, wherein, the described step that reads resource allocation information according to code book comprises:

Extract sign indicating number in the resource allocation bitmap from be included in group message corresponding to this terminal;

The described sign indicating number of search in code book; And

Determine MCS rank and resource size corresponding to the sign indicating number that is found.

13. the method for claim 1, wherein described radio node comprises the base station, and

Wherein, describedly produce resource allocation information according to code book and comprise:

Resources allocation is given the terminal of at least one adding group in the MCS rank in being included in code book and the scope of resource size;

Search is corresponding at least one sign indicating number of the combination of at least one MCS rank of distributing and at least one resource size of distributing; And

Generation comprises the resource allocation information of at least one yard that is found.

14. method as claimed in claim 13, further comprise transmission group message, described group of message comprises that resource allocation bitmap, user's bitmap, group add at least one in the burst size set identifier of the MCS set identifier of the burst size collection of the MCS rank collection of indication information, group, group, group and group.

15. method as claimed in claim 14, wherein, the step of described at least one yard of search comprises: when existence is applied in the terminal of deviant in the terminal that adds this group, for the terminal that is applied in deviant, according at independent sign indicating number with based on the corresponding relation searching code between the resource size of described deviant.

16. method as claimed in claim 14, wherein, described in being included in code book the MCS rank and the scope of resource size in the step of Resources allocation comprise: when in the terminal that adds this group, existing when being applied in the terminal of deviant, for the terminal that is applied in deviant, Resources allocation in the resource size range that obtains from the burst size range computation that is coupled with described deviant.

17. device as claimed in claim 2, wherein, described radio node comprises terminal, and

Described message handling device is searched for the sign indicating number that is included in the resource allocation information in code book, and determines MCS rank and resource size corresponding to the sign indicating number that is found.

18. device as claimed in claim 2, wherein, described radio node comprises the base station, and

Wherein, described controller in being included in code book the MCS rank and the scope of resource size in Resources allocation, and

Described message handling device search is corresponding to the sign indicating number of the combination of MCS rank of being distributed and the resource size of being distributed, and generation comprises the resource allocation information of the sign indicating number that is found.

19. device as claimed in claim 2, wherein, described radio node comprises terminal, and

Wherein, described controller determines to be included in MCS set identifier and the burst size set identifier from the set of configuration messages that the base station receives, and concentrate to determine corresponding to the MCS rank collection of described MCS set identifier with corresponding to the burst size collection of described burst size set identifier in the MCS rank collection of definition in advance and burst size then.

20. device as claimed in claim 2, wherein, described radio node comprises terminal, and

Wherein, described controller obtains the information of MCS rank collection and burst size collection by the broadcast that receives from the base station, determine to be included in the MCS set identifier of the group from the set of configuration messages that the base station receives and the burst size set identifier of this group, and then the MCS rank collection that obtains by described broadcast and burst size concentrate definite corresponding to described MCS set identifier MCS rank collection and corresponding to the burst size collection of described burst size set identifier.

21. device as claimed in claim 20 wherein, extracts the sign indicating number corresponding to this terminal in the resource allocation bitmap of described message handling device from be included in group message, search is described yard in code book, and determines MCS rank and resource size corresponding to described sign indicating number.

22. device as claimed in claim 2, wherein, described radio node comprises the base station, and

Wherein, described controller in being included in code book the MCS rank and the scope of resource size in Resources allocation added the terminal of this group at least one, search is corresponding at least one sign indicating number of the combination of at least one MCS rank of distributing and at least one resource size of distributing, and generation comprises the resource allocation information of at least one yard that is found.

23. device as claimed in claim 22, further comprise the reflector that is used for emission group message, described group of message comprises that resource allocation bitmap, user's bitmap, group add at least one in the burst size set identifier of the MCS set identifier of the burst size collection of the MCS rank collection of indication information, group, group, group and group.

24. device as claimed in claim 23, wherein, when existence was applied in the terminal of deviant in the terminal that adds this group, for the terminal that is applied in deviant, described message handling device was according to independent sign indicating number with based on the corresponding relation searching code between the resource size of described deviant.

25. device as claimed in claim 23, wherein, when existence is applied in the terminal of deviant in the terminal that adds this group, for the terminal that is applied in deviant, described controller is Resources allocation in the resource size range that obtains from the burst size range computation that has been added deviant.

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