CN102804639B - Apparatus and method for performing communication using frame structure supporting H-FDD operation - Google Patents

Abstract

A method for performing communication using a frame structure that supports a half-frequency division duplex (H-FDD) operation and a device using the same are disclosed. A base station performs resource allocation scheduling to support H-FDD user equipment operation in a mobile communication system. For example, the base station allocates first, second and last uplink subframes for idle subframes within a specific frame or punctures them, so that the H-FDD user equipment does not use the uplink subframes. The base station transmits the scheduled resource allocation information to the user equipment through a superframe header, a preamble and a MAP. The user equipment which has received the scheduled resource allocation information (subframe index and location that can be used by the user equipment) transmits and receives a signal based on the resource allocation information.

Description

For using equipment and the method for the frame structure executive communication supporting H-FDD operation

Technical field

The present invention relates to mobile communication system, and more specifically, relate to and use the method supporting the frame structure executive communication of H-FDD operation and the device using the method.

Background technology

IEEE 802.16m system can support Frequency Division Duplexing (FDD) (FDD) scheme and time division duplex (TDD) scheme, and Frequency Division Duplexing scheme comprises Half-Frequency Division Duplex (H-FDD) user facility operation.IEEE 802.16m system uses OFDM (OFDMA) as access mode in both the downlink and uplink.

Hereinafter, the frame structure of IEEE 802.16m system will briefly be described.

Fig. 1 is the figure of the structure that basic frame in IEEE 802.16m system is shown.

Superframe with reference to figure 1, each 20ms comprises the radio frames of the 5ms of four formed objects, and starts with superframe header (SFH).If provide any one in channel width 5MHz, 10MHz and 20MHz, then the radio frames of each 5ms comprises eight subframes.A subframe can be allocated for descending or uplink.Subframe can be defined as making first kind subframe comprise six OFDMA symbol, and Second Type subframe comprises seven OFDMA symbol and the 3rd type subframe comprises 5 OFDMA symbol.

Basis frame structure can be applied to the FDD scheme and TDD scheme that comprise H-FDD user equipment operation.In a tdd system, there are two switching points at each radio frames place.Switching point can be defined according to the direction change from down link to up link or from up link to down link.

H-FDD user equipment can be included in FDD system, and considers H-FDD user equipment, and frame structure is similar to tdd frame structure.But, descendingly occur in two frequency bandwidth places be separated with uplink.The switching of transtation mission circuit and receiving circuit requires the transmission gap between down link and up link.

Fig. 2 illustrates to have the CP length corresponding with 1/8 of useful symbol intervals and the figure of FDD frame structure example for the channel width of 5MHz, 10MHz and 20MHz.

With reference to figure 2, support that half-duplex subscriber equipment and full duplex subscriber equipment can be supported in the base station of FDD scheme simultaneously, wherein use identical radio frequency (RF) carrier operation half-duplex subscriber equipment and full duplex subscriber equipment.Support the subscriber equipment of FDD scheme should use in H-FDD scheme and FDD scheme any one.For downlink transfer and uplink, all subframes can be used.Descending and uplink can be divided in a frequency domain.A superframe is divided into four frames, and one of them frame comprises eight subframes.

As mentioned above, IEEE 802.16m system should support H-FDD scheme and full Frequency Division Duplexing (FDD) (F-FDD) both schemes.But, up to the present the FDD frame structure for throughput of system being brought up to maximum magnitude is not also proposed.

Summary of the invention

Technical problem

The one object of the present invention being designed to deal with problems is to provide the method and apparatus using in mobile communication system and support the frame structure executive communication that Half-Frequency Division Duplex (H-FDD) operates.

The technical scheme of dealing with problems

Therefore, the present invention relates to and a kind ofly use the method for frame structure executive communication supporting H-FDD operation, the method substantially avoid one or more problem that restriction and shortcoming due to correlation technique cause.

One object of the present invention is a kind of method providing frame structure using support Half-Frequency Division Duplex (H-FDD) to operate in the executive communication of subscriber equipment place.

Another object of the present invention is to a kind of method providing frame structure using support Half-Frequency Division Duplex (H-FDD) to operate in base station executive communication.

Another object of the present invention is to provide a kind of frame structure that uses to support the user equipment (ue) device that Half-Frequency Division Duplex (H-FDD) operates.

Another object of the present invention is to provide a kind of frame structure that uses to support the base station that Half-Frequency Division Duplex (H-FDD) operates.

Attendant advantages of the present invention, object and feature will part describe and hereafter will will become obvious for those of ordinary skill in the art afterwards in research in the following description, maybe can be understood by practice of the present invention.Can realize and obtain object of the present invention and other advantage by the structure particularly pointed out in written specification and claim and accompanying drawing thereof.

In order to realize these objects and other advantage and according to object of the present invention, as specifically and broadly described at this, by using, one supports that the frame structure that Half-Frequency Division Duplex (H-FDD) operates comprises the following steps in the method for travelling carriage place executive communication in mobile communication system: receive from base station and be used for the transmission of schedule mobile stations or the resource allocation information of reception; And use one or more subframe executive communication of the distribution except idle subframe.

Idle subframe comprises first, second and last sub-frame of uplink in a uplink frame.And idle subframe also comprises the descending sub frame of HARQ (hybrid automatic repeat-request) sequential corresponding to first, second and last sub-frame of uplink.

At this moment, the first descending sub frame by corresponding to the sequential identical with the first sub-frame of uplink in idle subframe receives superframe header or leading.

In another aspect of this invention, a kind ofly to comprise the following steps with the method supported Half-Frequency Division Duplex (H-FDD) and operate for the base station executive communication in mobile communication system: distribute for using the travelling carriage scheduling resource of H-FDD frame structure, the Resourse Distribute wherein dispatched will provide idle subframe, for receive superframe header (SFH) or A-leading and for guarantee send and receive between change gap; And the resource allocation information of scheduling is sent to travelling carriage.

Idle subframe comprises first, second and last sub-frame of uplink in a sub-frame of uplink.And idle subframe also comprises the descending sub frame of HARQ (hybrid automatic repeat-request) sequential corresponding to first, second and last sub-frame of uplink.

One or more other descending sub frame that the method also comprises except by the descending sub frame of HARQ (hybrid automatic repeat-request) sequential except corresponding to first, second and last sub-frame of uplink sends signal to travelling carriage.

In still another aspect of the invention, a kind of travelling carriage (MS) of the frame structure executive communication using the Half-Frequency Division Duplex (H-FDD) in support mobile communication system to operate, this travelling carriage comprises: receiver module, it is used for the transmission of schedule mobile stations or the resource allocation information of reception for receiving from base station, wherein resource allocation information is scheduled as provides idle subframe, for receive superframe header (SFH) or A-leading and for guarantee send and receive between change gap; Processor, it is for controlling by other subframe transmitt or receive signal of one or more except idle subframe based on the resource allocation information received; And radio frequency (RF) unit, its for according to the control of processor by other subframe transmitt or receive signal of one or more except this subframe.

In still another aspect of the invention, one is the base station (BS) that operates to support Half-Frequency Division Duplex (H-FDD) of executive communication in mobile communication system, this base station comprises: processor, it uses the travelling carriage scheduling resource of H-FDD frame structure to distribute for position, the Resourse Distribute wherein dispatched will provide idle subframe, for receive superframe header (SFH) or A-leading and for guarantee send and receive between change gap; And sending module, it is for sending the resource allocation information of scheduling to travelling carriage.

According to the present invention, can support H-FDD travelling carriage operation and on F-FDD frame structure without any impact.Therefore, in F-FDD frame structure, throughput of system can be improved significantly.

It is all exemplary and explanatory for will be appreciated that foregoing general of the present invention describes with detailed description below, and is intended to provide the of the present invention further explanation to claimed.

Beneficial effect of the present invention

According to the present invention, can support H-FDD travelling carriage operation and on F-FDD frame structure without any impact.Therefore, in F-FDD frame structure, throughput of system can be significantly improved.

Accompanying drawing explanation

Accompanying drawing is included to provide a further understanding of the present invention, and accompanying drawing shows embodiments of the present invention and together with the description for explaining principle of the present invention.In the accompanying drawings:

Fig. 1 is the figure of the structure that basic frame in IEEE 802.16m system is shown;

Fig. 2 illustrates to have the CP length corresponding with 1/8 of useful symbol intervals and the figure of FDD frame structure example for the channel width of 5MHz, 10MHz and 20MHz;

Fig. 3 is the figure of the example that superframe structure in AAI system is shown;

Fig. 4 is the figure of the example that F-FDD frame structure in AAI system, FDD frame structure and H-FDD frame structure are shown;

Fig. 5 is the figure of another example that F-FDD frame structure in AAI system, FDD frame structure and H-FDD frame structure are shown;

Fig. 6 is the figure of the example that F-FDD frame structure in AAI system is shown;

Fig. 7 is the figure of the example that F-FDD frame structure and H-FDD frame structure in AAI system are shown;

Fig. 8 illustrates in AAI system for supporting the figure with the example of the H-FDD frame structure of the CP length of 1/8 of the channel width for 5MHz, 10MHz and 20MHz of H-FDD user equipment;

Fig. 9 illustrates in AAI system for supporting the figure with the example of the H-FDD frame structure of the CP length of 1/16 of the channel width for 5MHz, 10MHz and 20MHz of H-FDD user equipment;

Figure 10 illustrates in AAI system for supporting the figure with the example of the H-FDD frame structure of the CP length of 1/8 of the channel width for 8.75MHz of H-FDD user equipment;

Figure 11 illustrates in AAI system for supporting the figure with the example of the H-FDD frame structure of the CP length of 1/8 of the channel width for 7MHz of H-FDD user equipment;

Figure 12 and Figure 13 illustrates the example of the H-FDD frame structure in AAI system without DLgap and does not have the figure of example of H-FDD frame structure of ULgap;

Figure 14 is the figure of the example that F-FDD frame structure in AAI system, FDD frame structure and H-FDD frame structure are shown;

Figure 15 is the figure of the example that H-FDD frame structure in AAI system is shown; And

Figure 16 is the figure of the element that device 50 is shown.

Embodiment

Hereinafter, the preferred embodiment of the present invention will be described with reference to the drawings.Will be appreciated that and will disclosed detailed description in detail be intended to describe illustrative embodiments of the present invention together with accompanying drawing, and and be not intended to description can in order to implement unique execution mode of the present invention.Detailed description below comprises for providing the detailed content understood completely of the present invention.But, it will be apparent to those skilled in the art that and can implement the present invention when not this detailed content.Such as, although the description that will carry out based on the mobile communication system corresponding to 3GPPLTE system below, description below can be applied to other mobile communication system except the specific characteristic of 3GPP LTE system.

In some cases, in order to prevent concept obfuscation of the present invention, will structure and the equipment of known technology be omitted, or the major function based on each structure and equipment be illustrated in block diagram form structure and the equipment of known technology.And as much as possible, use identical Reference numeral to represent same or similar part by running through drawing and description.

In addition, in the following description, suppose that subscriber equipment represents user terminal that is mobile or fixed type, such as travelling carriage (MS) and advanced travelling carriage (AMS).Also suppose that base station represents the arbitrary node with the network node of travelling carriage executive communication, such as Node B, eNode B and access point (AP).

In mobile communication system, subscriber equipment can receive information and send information to base station by up link by down link from base station.The information sent from travelling carriage or the example of information received in a mobile station comprise data and various control information.According to send information from travelling carriage or the type of information that receives in a mobile station and use and there is various physical channel.

The invention describes advanced air interface (AAI) (such as, IEEE 802.16m) in system for supporting the FDD frame structure of F-FDD subscriber equipment, H-FDD user equipment and traditional H-FDD user equipment, and subscriber equipment and base station, subscriber equipment and base station use FDD frame structure signal and data to be sent to each other and from Received signal strength and data each other.Advanced air-interface system described herein is only exemplary, and does not limit with definition the type of system.In AAI system, the frame structure supporting H-FDD user equipment can be configured for based on the FDD frame structure defined in IEEE 802.16m.

Base station can perform resource allocation scheduling to support the operation of Half-Frequency Division Duplex (H-FDD) subscriber equipment in mobile communication system.Such as, base station can operation dispatching in the following manner, namely the first sub-frame of uplink, the second sub-frame of uplink and last sub-frame of uplink are assigned as the idle subframe in particular frame or punch to them by base station, thus H-FDD user equipment does not use these sub-frame of uplink.In other words, free time can be distributed for downlink/uplink switches in base station in units of subframe.Base station can send by the broadcast message of such as superframe header, leading, MAP information etc. the resource allocation information as above dispatched to subscriber equipment.The subscriber equipment having received the resource allocation information (can comprise the number etc. of available sub-frame index, subframe position, available sub-frame) of scheduling can send and Received signal strength based on resource allocation information.

Hereinafter, by describe for the operation supporting H-FDD user equipment frame structure from the method for base station assigns resource, for support H-FDD user equipment operation frame structure the method for base station scheduling Resourse Distribute and based on Resource Distribution and Schedule from H-FDD user equipment Received signal strength and the method sending signal to H-FDD user equipment.

Fig. 3 is the figure of the example that superframe structure in AAI system is shown.

With reference to figure 3, in the frame structure of IEEE 802.16m system, a superframe is divided into four frames, and sends data to subscriber equipment in units of superframe.Therefore, H-FDD frame structure can be configured by the superframe structure inheriting previous definition.At this moment, subscriber equipment needs the useful signal (significant signal) (such as, superframe header (SFH) and advanced formula leading (A-is leading)) receiving the control information such as sent from base station in the mode identical with existing superframe structure.From in a superframe each frame send useful signal position as shown in Figure 3.

H-FDD user equipment needs from base station reception leading as the superframe header of useful signal, the leading and secondary A-of main A-, and has nothing to do with the group belonging to H-FDD user equipment.Subscriber equipment can receive these signals by the first subframe of each frame as shown in Figure 3.Therefore, in order to the H-FDD user equipment belonging to each group receives all useful signals sent from base station, need to configure H-FDD frame structure in such a way, namely uplink frame district be distribute free time each frame the first sub-frame of uplink or the first sub-frame of uplink is punched, useful signal is sent to the first sub-frame of uplink.If punched to each frame subframe in up district by said method, then cause the problem that the wasting of resources occurs.

As the other method of the useful signal for sending such as control information to H-FDD user equipment, can resend according to the mode that leading with the A-sent from the first frame (secondary A-is leading) is identical the A-sent from the 3rd frame superframe and the 4th frame as shown in Figure 3 leading.Because the H-FDD user equipment corresponding to each group should receive superframe header (SFH) and A-leading (the leading and secondary A-of main A-is leading) from base station, therefore do not need to receive the identical A-sent from the 3rd frame and the 4th frame leading.

Therefore, in order to H-FDD user equipment receives useful signal in H-FDD frame structure, namely in order to receive the useful signal sent from the first frame and second frame of superframe, can configure H-FDD frame structure in such a way, the sub-frame of uplink being about to correspond to the descending sub frame that useful signal is sent to identical sequential divides and is used in free time or punches.In this case, be configured such that with H-FDD frame and a sub-frame allocation be used for compared with free time or the situation of punching to this subframe in all frames, the waste of resource to be reduced more.But the H-FDD user equipment belonging to group 2 can not receive useful signal (secondary A-is leading) via the 3rd frame and the 4th frame, thus may deteriorated communication throughput.

In this case, although the H-FDD user equipment belonging to group 1 is leading and can receive all useful signals sent superframe by receiving the A-sent from the 3rd frame and the 4th frame, but it is leading that the H-FDD user equipment belonging to group 2 does not but receive A-by the third and fourth frame, thus the unfairness between group can be there is when receiving useful signal.In order to solve this unfairness, except the first sub-frame allocation of the second frame being used for free time or carrying out except the situation of punching, the switching between the group performing the 3rd frame or the 4th frame place extraly, thus unfairness when receiving useful signal can be solved.

Such as, if switched in the 4th frame place use group, then for the H-FDD frame structure at first, second in Fig. 3 and the 4th frame place, down link according to the order-assigned of group 1 and group 2 descending/uplink frame and up link according to the order-assigned of group 2 and group 1 descending/uplink frame.But the 3rd frame place in figure 3, can carry out allocation of downlink/uplink frame in the structure contrary with foundation structure by switching between the groups.That is, down link can/uplink frame descending according to the order-assigned of group 2 and group 1 and up link can/uplink frame descending according to the order-assigned of group 1 and group 2.

Therefore, if as above execution group switches, then the number of the useful signal received from group 1H-FDD subscriber equipment and type become number and the type of the useful signal received by group 2H-FDD subscriber equipment, thus can realize fairness.H-FDD user equipment can notice that such group switches, and the group namely belonging to H-FDD user equipment is changed by the group designator sent from base station.

As mentioned above, IEEE 802.16m system should support F-FDD subscriber equipment and H-FDD user equipment.At this moment, be configured for for the F-FDD frame structure of F-FDD subscriber equipment definition the frame structure supporting H-FDD user equipment before can using.Owing to configuring F-FDD frame structure in units of subframe, the frame structure supporting H-FDD user equipment therefore also can be configured in units of subframe.As the H-FDD user equipment of existing legacy system, H-FDD user equipment is grouped into two groups, thus it can perform H-FDD operation.Different from F-FDD subscriber equipment, the change gap that the H-FDD user equipment needs belonging to each group switch for carrying out downlink/uplink (DL/UL) in H-FDD frame structure.And in order to H-FDD frame structure keeps aliging with existing FDD frame structure frame embarking on journey, existing FDD frame structure needs to arrange change gap.For this reason, maybe can punch to specific sub-frame for free time distributes specific sub-frame.

Fig. 4 is the figure of the example that F-FDD frame structure in AAI system, FDD frame structure and H-FDD frame structure are shown.

(a) of Fig. 4 shows the example of the F-FDD frame structure for F-FDD subscriber equipment, (b) of Fig. 4 shows the example of the F-FDD frame structure for F-FDD subscriber equipment and H-FDD user equipment, and (c) of Fig. 4 shows the example of the H-FDD frame structure for H-FDD user equipment.

As shown in (c) of Fig. 4, switch for downlink/uplink, the sub-frame allocation that same position place in downlink region and up link district exists can be punched to change gap or using this subframe as idle frame by the H-FDD user equipment belonging to two groups in H-FDD frame structure.Such as, for belong in (c) of Fig. 4 group 1 H-FDD user equipment transmission change gap (TTG) and belong to the reception change gap (RTG) of group 2, the 4th sub-frame allocation can be punched to the 4th subframe in downlink region and up link district to interstitial area.In this case, the position of the subframe that the change gap for the H-FDD user equipment belonging to two groups punches is only exemplary, and is not limited to the 4th subframe.

Can by the last sub-frame of uplink punching cause change gap configuration H-FDD frame structure for the RTG of the H-FDD user equipment belonging to group 1 being up link district.Because all H-FDD user equipment belonging to each group should receive and superframe header (SFH) leading from the A-of base station transmission, therefore with by H-FDD frame structure in downlink region the sub-frame of uplink that leading for the A-position identical with the position of the subframe that superframe header is sent to exists can be perforated, to operate for free time.

Therefore, the first sub-frame of uplink that identical position, the position of the subframe leading with A-in up link district or superframe header are sent to exists punches, and H-FDD user equipment need change gap receive superframe header with the frame place be sent in superframe header after send data.Consider such change gap, can punch to the second sub-frame of uplink in up link district.In like fashion, receive the frame place of superframe header in H-FDD user equipment, first sub-frame of uplink in up link district and the second sub-frame of uplink can be set to free time or can be perforated.H-FDD frame is configured as above and then can keep aliging with F-FDD frame structure frame embarking on journey.

In Fig. 4 (c), if the RTG belonging to the H-FDD user equipment of group 1 is less than or equal to free time, then in H-FDD frame structure, can not punch to the last subframe in up link district.Therefore, if the H-FDD user equipment that free time for being enough for the change gap from uplink handover to down link, then belongs to group 1 can use in up link district four subframes to send data etc.Consider the change gap occurred when receiving superframe in the frame receiving superframe header, group 2H-FDD subscriber equipment can use the sub-frame of uplink of less than the frame not receiving superframe header 1 to send data etc.

As shown in (c) of Fig. 4, although a sub-frame of uplink of the frame that group 2H-FDD subscriber equipment can use superframe header to be sent to from base station (namely, 3rd sub-frame of uplink) send data etc., but two sub-frame of uplink UL0 and UL1 at the group 2H-FDD subscriber equipment frame place that superframe header can be used not to be sent to are to send data etc.

Alternatively, in order to keep the number of the available upstream subframe of all frame place group 2H-FDD subscriber equipmenies, the mode of the second sub-frame of uplink UL0 can not used to configure H-FDD frame structure to make group 2H-FDD subscriber equipment.

If the change gap (TTG/RTG) switched for the downlink/uplink of the H-FDD user equipment that belongs to each group is less than or equal to a symbol lengths, then can use the change gap for two groups and some symbols of subframe of being perforated.In other words, substitute and the subframe for change gap is punched, by the subframe at place, gap allocation of symbols to gap, and then can configure subframe by other symbol.Such as, in (c) of Fig. 4, the 3rd descending sub frame DL2 that can be close to group 1 distributes the descending sub frame of five symbols.Alternatively, the descending sub frame of five symbol construction can be dispensing by before the first descending sub frame DL0 of group 2.

In order to support H-FDD user equipment, shown in (c) that only can use Fig. 4 for a group in the H-FDD frame structure of two groups.Such as, only H-FDD frame structure can be used in (c) of Fig. 4.Therefore, can be configured in the mode identical with the frame structure organizing 1 in (c) of Fig. 4 the H-FDD frame structure supporting H-FDD user equipment.Now, for change gap, can punch to the 4th descending sub frame DL3 and last sub-frame of uplink U7.Therefore, the ratio between the number of the available descending sub frame of H-FDD user equipment and the number of available upstream subframe becomes 3: 3.

But, if the free time of FDD frame structure arrives greatly the level that can cover RTG, then do not need to punch to last sub-frame of uplink for change gap.At this moment, the ratio between the number of the available descending sub frame of H-FDD user equipment and the number of available upstream subframe becomes 3: 4.Therefore, between the number of the available descending sub frame of H-FDD user equipment and the number of available upstream subframe, whether ratio and can punch to last sub-frame of uplink for RTG and change according to the position of the descending sub frame punched for TTG.

As shown in (c) of Fig. 4, if use subframe punching to support H-FDD user equipment, then do not affect F-FDD subscriber equipment.Therefore, F-FDD subscriber equipment can use all subframes to transmit and receive data as the F-FDD frame structure as shown in (a) of Fig. 4 in downlink/uplink.But, if for H-FDD user equipment change gap and in the downlink a symbol is punched, then F-FDD subscriber equipment also needs the subframe using five symbol construction be perforated by one of them in downlink region.Therefore, base station to all subscriber equipment transmission frame configuration informations or can represent the indication information punched to a symbol.

Fig. 5 is the figure of another example that F-FDD frame structure in AAI system, FDD frame structure and H-FDD frame structure are shown.

With reference to figure 5, (a) of Fig. 5 shows the example of the F-FDD frame structure for F-FDD subscriber equipment, (b) of Fig. 5 shows the example of the F-FDD frame structure for F-FDD subscriber equipment and H-FDD user equipment, and (c) of Fig. 5 illustrates the example of the H-FDD frame structure for H-FDD user equipment.

Different from (c) of Fig. 4, the change gap position that the downlink/uplink for the H-FDD user equipment belonging to two groups switches can change according to the H-FDD user equipment belonging to each group.The H-FDD frame structure for equipment of group 1 can be belonged to make the mode be perforated for seven subframe UL7 in the descending sub frame DL3 of four in the downlink region of change gap and up link district configure as shown in (c) as Fig. 5.And, can to make the H-FDD frame structure for change gap, the mode that the 5th descending sub frame DL4 punches being configured to the subscriber equipment belonging to group 2.

In (c) of Fig. 5, the H-FDD frame structure of the subscriber equipment belonging to group 2 can be configured in the following manner: the first subframe UL0 of uplink frame is punched to receive the leading or superframe header of the A-sent from the first subframe of downlink frame, and change gap in considering the uplink frame that superframe header is sent to and extraly the second sub-frame of uplink UL1 being punched.

Therefore, belonging in the H-FDD frame structure of the subscriber equipment of group 1 as shown in (c) as Fig. 5, downlink frame can comprise three subframes (first, second, and third descending sub frame) and sub-frame of uplink also comprises three subframes (the 5th, the 6th and the 7th sub-frame of uplink).At this moment, if the RTG of group 1 is less than or equal to free time, then can not punch to last sub-frame of uplink process.Therefore, uplink frame can comprise four subframes (the 5th, the 6th, the 7th and the 8th sub-frame of uplink).

In the H-FDD frame structure of subscriber equipment belonging to group 2, consider that aforementioned subframe is punched, downlink frame comprises three subframes (the 6th, the 7th and the 8th descending sub frame), and the uplink frame that superframe header is sent to comprises two subframes (the third and fourth sub-frame of uplink).But the uplink frame that the leading instead of superframe header of A-is sent to can comprise three subframes (second, third and the 4th sub-frame of uplink).

The subframe index of the F-FDD frame structure in (a) of Fig. 5 is used to carry out the index of the subframe shown in (c) of allocation plan 5.The index of subframe can be changed for H-FDD frame structure.Aforementioned H-FDD frame structure is only exemplary, and for supporting that the H-FDD frame structure of the H-FDD user equipment of each group can change according to the position of the subframe of punching for change gap.

Can only use shown in (c) of Fig. 5 be the H-FDD frame structures of one of each H-FDD frame structure group that two groups are formed to support H-FDD user equipment, instead of H-FDD user equipment is divided into two groups.And, in order to equally keep the number of the sub-frame of uplink on all frames, all frames of group 2 can not use the second sub-frame of uplink UL0.

Fig. 6 is the figure of the example that F-FDD frame structure in AAI system is shown.

With reference to figure 6, (a) of Fig. 6 shows the example of the F-FDD frame structure for 16m F-FDD subscriber equipment, and (b) of Fig. 6 illustrates the example of the F-FDD frame structure for supporting 16m H-FDD user equipment and traditional H-FDD user equipment.

When there is traditional H-FDD user equipment, FDD frame structure can be divided into Liang Ge district to support traditional H-FDD user equipment and 16m FDD subscriber equipment.In other words, FDD frame structure can be divided into traditional district and 16m district.At this moment, can traditional H-FDD user equipment be assigned to traditional district and 16m FDD user equipment allocation is configured frame to the mode in 16m district.In this case, for traditional H-FDD user equipment and traditional district of 16m user equipment allocation and the size in 16m district can fix or change neatly.The information in each district in such district can represent by sending signaling from base station to subscriber equipment.

16m FDD and 16m H-FDD user equipment are used for 16m district and traditional H-FDD user equipment is used for traditional district.At this moment, although 16m F-FDD subscriber equipment can use all resources in 16m district, but four subframe of 16m H-FDD user equipment to up link punches to use it as change gap, thus 16m H-FDD user equipment can not use the 4th subframe to send signal (or data) etc.And, if free time be less than the RTG required by 16m H-FDD user equipment, then can in the mode of punching to the last descending sub frame DL3 for change gap to configure H-FDD frame structure.

Fig. 7 is the figure of the example that F-FDD frame structure and H-FDD frame structure in AAI system are shown.

With reference to figure 7, (a) of Fig. 7 shows the example of the F-FDD frame structure for 16m F-FDD subscriber equipment, (b) of Fig. 7 shows the example of the H-FDD frame structure for supporting traditional H-FDD user equipment, and (c) of Fig. 7 shows the example of the H-FDD frame structure for 16m H-FDD user equipment.

Such as, the number distributing to the descending sub frame for supporting traditional district of legacy User Equipment needs to be 3 or larger, and can be included in predetermined subframe for the time that downlink/uplink switches.Therefore, can to represent the condition of the length of the downlink region distributing to legacy User Equipment as shown in formula 1 below.

[formula 1]

3 × subframe lengths≤conventional downlink section length+TTG1

Conventional downlink section length≤4 × subframe lengths

Downlink region for traditional H-FDD user equipment meets the condition of formula 1 and can be distributed by units of symbol.It is the gap of RTG1 size that up link district can be assigned with relative to next frame, or can be dispensed in F-FDD frame structure the first sub-frame of uplink in the position of last sub-frame of uplink.

In the 16m district distributed for 16m F-FDD subscriber equipment and 16m H-FDD user equipment, for the downlink/uplink change gap of 16mH-FDD subscriber equipment, can to punch to the 4th sub-frame of uplink UL3 in up link district and then the 4th sub-frame of uplink UL3 to be used as the mode in gap to configure H-FDD frame structure.And for TTG, last descending sub frame can be perforated to be used as change gap.Therefore, last descending sub frame DL7 and the 4th sub-frame of uplink UL3 can be perforated and be assigned with the change gap as the 16m H-FDD user equipment for operating at place of H-FDD frame structure Zhong 16m district.Based on Fig. 7 (a) shown in F-FDD frame structure in index aforementioned subframe index is shown.

And, can be configured for as follows and support the H-FDD frame structure of H-FDD user equipment: suitably control traditional downlink region and up link district, the change gap of traditional H-FDD user equipment is present in the 3rd subframe.This H-FDD frame structure can be configured as follows: make 16m subscriber equipment use the first sub-frame of uplink UL0 and the second sub-frame of uplink UL1 at place of 16m district, and start down link after the 3rd sub-frame of uplink is perforated.

If for the TTG in the 16m district of 16m H-FDD user equipment distribution is less than or equal to free time, then can punch to last descending sub frame DL7 for change gap.In this case, the number for the descending sub frame of 16m FDD user equipment allocation is 4, and this corresponds to the situation than the situation many increases subframe performing subframe punching.At this moment, the ratio between the number of descending sub frame and the number of sub-frame of uplink becomes 4: 3.

In the F-FDD frame structure shown in (a) of Fig. 7, because 16m F-FDD subscriber equipment does not need change gap, then 16m F-FDD subscriber equipment can use except distributing to traditional H-FDD user equipment downlink region except the subframe of other downlink region, i.e. the 5th, the 6th, the 7th and the 8th descending sub frame.The same with 16mH-FDD subscriber equipment, 16m F-FDD subscriber equipment can use first, second, and third subframe UL0, UL1 and UL2 in up link district.But, if traditional up link district does not use the 4th sub-frame of uplink UL3 district, then with 16m H-FDD user equipment differently, 16m F-FDD subscriber equipment can use first, second, third and fourth sub-frame of uplink UL0, UL1, UL2 and UL3 send data.In this case, base station can operation dispatching or provide signaling to subscriber equipment.

When using aforementioned F-FDD frame structure to support 16m subscriber equipment, H-FDD user equipment is punched to the some subframes for change gap at the subframe place in each district that F-FDD subscriber equipment uses, and sends data to use the frame structure in the 16m district shown in Fig. 7.

As mentioned above, in order to support H-FDD user equipment, the H-FDD frame structure of definition before can using.At this moment, each subscriber equipment can be divided into two groups, thus can according to the arranged in order uplink frame contrary with the order distributing to the downlink frame that each is organized.In the present invention, frame alignment is performed to make itself and existing FDD frame structure align for aforementioned frame structure, does not affect the subscriber equipment using existing FDD frame structure to support H-FDD user equipment.

In addition, with existing FDD frame structure differently, H-FDD frame structure needs the switching period distributed between the down link of each group and up link.Therefore, need in downlink region or up link district, arrange the free time switched for downlink/uplink.At this moment, the same position in downlink region/up link district the subframe switching distribution for downlink/uplink can be arranged.Therefore, the gap for switching can be there is between the two groups, and the H-FDD frame structure alignd with FDD frame structure of the channel width of 5MHz, 10MHz and 20MHz can be configured for.

Fig. 8 illustrates in AAI system for supporting the figure with the example of the H-FDD frame structure of the CP length of 1/8 of the channel width for 5MHz, 10MHz and 20MHz of H-FDD user equipment.

Because the FDD frame of the channel width of 5MHz, 10MHz and 20MHz comprises first kind subframe, this first kind subframe comprises six OFDMA (OFDM) symbols, and the subframe of therefore distributing for free time is first kind subframe.In this case, for free time distributes or the position of the subframe of punching can change according to the length distributing to the district that two are organized.Therefore, the position of the subframe shown in Fig. 8 is only exemplary, and does not limit the position of the subframe of punching.

Owing to keeping frame to align to support H-FDD user equipment in the mode identical with existing FDD frame structure, therefore, it is possible to minimize the impact on the subscriber equipment using existing IEEE 802.16m FDD frame structure.As shown in Figure 8, in order to support that H-FDD user equipment keeps aliging with the frame of existing FDD frame structure simultaneously, can be distribute a subframe free time from downlink/uplink district, for switching, namely downlink/uplink switches or uplink/downlink switching.

Such as, in the FDD frame structure of eight first kind subframes, between the downlink regions distributing to two groups, a subframe existing can be used in free time.Therefore, the gap (DLgap) equaling a subframe is present between two groups at downlink frame place.As mentioned above, because the subscriber equipment belonging to two groups in H-FDD frame structure should receive the useful signal (such as superframe header and A-are leading) sent from each frame, therefore as shown in Figure 8, frame period of being sent to of useful signal and uplink frame period should not overlap each other in downlink region.In other words, the sub-frame of uplink at the subframe same position place be sent to aforementioned useful signal is assigned with as idle subframe or is perforated.

In the FDD frame structure of existing IEE 802.16m system, by the first subframe of the first frame, superframe header is sent to subscriber equipment from base station.Because H-FDD frame structure is based on existing FDD frame structure, therefore send superframe structure in the mode identical with existing FDD frame structure.In order to all subscriber equipmenies receive superframe header in H-FDD frame structure, as shown in Figure 8, in up link district, the subframe of the frame duration that superframe header is sent to is punched or its point is used in free time, thus subframe does not overlap each other.

In order to configure such frame, subscriber equipment can by A-leading, superframe header, A-MAP etc. from base station received frame configuration information.Frame configuration information comprises downlink/uplink skew (DL/UL_OFFSET) information, downlink/uplink assignment information (starting point) information, subframe configuration information, the information of number of subframes, the information of ordering of sub-frames, downlink/uplink length information, group indicator information, TTG/RTG information, punching sub-frame information (such as, the subframe index of punching, type, position, number) and free time information (downlink/uplink gap).

The H-FDD user equipment having received frame configuration information from base station can by the information using frame configuration information to identify the downlink/uplink district of distribution.In this case, TTG and the RTG value that, superframe header leading by A-and A-MAP send can be the constant value had nothing to do with frame.The value of the frame structure of the channel width for configuring 5MHz, 10MHz and 20MHz can be represented as follows.

The value TTG1 corresponding with TTG and RTG of group 1 and the scope of RTG1 can be represented by formula 2 below.

[formula 2]

Two symbol duration < TG1+RTG1≤first kind sub-frame duration+free times

If DLgap equals the length for switching the subframe that the period distributes, then can represent scope by formula 3 below.

[formula 3]

Two symbol duration < TG1+RTG1=DLgap+ free times

The value TTG2 corresponding with TTG and RTG of group 2 and the scope of RTG2 can be represented by formula 4 below.

[formula 4]

Two symbol duration < TTG2+RTG2≤DLgap

Two symbol duration < TTG2+RTG2≤at the sub-frame duration of downlink frame place punching

At this moment, if hypothesis RTG2=ULgap, then can by the scope of TTG2+RTG2=TTG2+ULgap representative value TTG2 and RTG2.And the value of RTG2 can have the value being less than TTG1 all the time.

In H-FDD frame structure in fig. 8, H-FDD user equipment can by the position using the DL/UL_OFFSET information received from base station to identify the starting point of the uplink frame of distribution.In this case, the DL/UL_OFFSET value of information represents the deviant corresponding with the interval of the starting point from the starting point of downlink frame to uplink frame.Therefore, owing to using DL/UL_OFFSET in aforementioned frame structure, therefore can reduce distributed by H-FDD user equipment, for send to H-FDD user equipment the free time performing affairs (that is, downlink/uplink switches) after useful signal by descending sub frame or the subframe of punching.

In this case, DL/UL_OFFSET can be sent to each group, or only can be sent to group 2 as shown in Figure 8 with the subscriber equipment of the correspondence of the starting point in informing uplink district.When only DL/UL_OFFSET being sent to group 2, the H-FDD user equipment of group 1 can by using the starting point of TTG1 or DLgap information identification uplink frame.The DL/UL_OFFSET value being used to indicate the starting point of uplink frame can be set to identical value or can be set to the different value of each frame in superframe.When DL/UL_OFFSET value is set to identical value in superframe, DL/UL_OFFSET can be represented by formula 5 below.

[formula 5]

DL/UL_OFFSET value >=uplink frame place punching the first sub-frame duration+TTG2

And when DL/UL_OFFSET value is set to each frame different value, the first frame of superframe should meet the condition shown in formula 5, and the scope of the DL/UL_OFFSET value being used for other frame can be represented by formula 6 below.

[formula 6]

Two symbol duration < DL/UL_OFFSET < are used for first sub-frame duration in the punching of uplink frame place of DL/UL affairs

When different DL/UL_OFFSET value is not used for each frame, as as shown in first frame of Fig. 8, frame can be configured as follows: in uplink frame district, the sub-frame allocation that the subframe of the downlink region be sent to useful signal matches is used for free time or punches, to receive useful signal, i.e. leading the and superframe header of A-.

Fig. 9 illustrates in AAI system for supporting the figure with the example of the H-FDD frame structure of the CP length of 1/16 of the channel width for 5MHz, 10MHz and 20MHz of H-FDD user equipment.

The FDD frame structure with the CP length of 1/16 for the channel width of 5MHz, 10MHz and 20MHz can comprise five first kind subframes and three Second Type subframes.Therefore, in order to carry out downlink/uplink switching in the mode identical with preceding method, can in mode first kind subframe or Second Type sub-frame allocation being used for free time or carry out punching to configure H-FDD frame structure.In this case, preferably, first kind subframe is distributed to reduce the waste of frame.And in order to H-FDD user equipment receives the leading and superframe header of the useful signal, the A-that are sent from downlink frame by base station, the mode that the frame duration that should be sent to useful signal should be not overlapping with the uplink frame duration configures frame.As mentioned above, can punch to the subframe of the uplink frame duration corresponding to the sequential identical with the descending sub frame duration comprising superframe header.Similarly, other frame of superframe place existence can be configured in the mode of punching to the first sub-frame of uplink of uplink frame.For the affairs (that is, downlink/uplink switches) of the H-FDD user equipment of use DL/UL_OFFSET, the second sub-frame of uplink can not be allocated for free time or be perforated, but may be used for data input and data output.

Figure 10 illustrates in AAI system for supporting the figure with the example of the H-FDD frame structure of the CP length of 1/8 with the channel width of 8.75MHz of H-FDD user equipment.

The H-FDD frame structure with the CP length of 1/8 for the channel width of 8.75MHz can support the H-FDD user equipment using aforementioned structure.The FDD frame structure with the CP length of 1/8 of the channel width of 8.75MHz can be used for by first kind subframe and Second Type sub-frame configuration.Therefore, in H-FDD frame structure, be assigned as idle subframe for downlink/uplink switches or the subframe that is perforated can be the first kind of six symbols or the Second Type of seven symbols.In order to reduce the waste of the frame in H-FDD frame structure, preferably, first kind sub-frame allocation is used for free time or punches.

As shown in Figure 10, in H-FDD frame structure, a subframe can be distributed and switch for downlink/uplink.In order to H-FDD user equipment receives the leading or superframe header of useful signal, A-, the mode can carrying out punching with the sub-frame of uplink matched by the sub-frame duration be sent to superframe header is to configure H-FDD frame structure.For the affairs (that is, downlink/uplink switches) of the H-FDD user equipment of use DL/UL_OFFSET, the second sub-frame of uplink can not be allocated for free time or be perforated.The type of the subframe be perforated shown in Figure 10 and position are only exemplary, and the type of the subframe be perforated and position are not limited to the example of Figure 10.

Figure 11 illustrates in AAI system for supporting the figure with the example of the H-FDD frame structure of the CP length of 1/8 of the channel width for 7MHz of H-FDD user equipment.

The FDD frame structure with the CP length of 1/8 for the channel width of 7MHz can comprise first kind subframe and the 3rd type subframe.Therefore, in the frame structure of the channel width for 7MHz, when configuring H-FDD frame structure in the mode identical with the channel width of 5/10/20MHz with 8.75MHz, being perforated or dividing the subframe being used in idle subframe to be first kind subframe or Second Type subframe.Figure 11 illustrates the H-FDD frame structure of the channel width of 7MHz.In this case, be perforated or divide the position being used in the subframe of free time to be not limited to ad-hoc location.

As mentioned above, in order to support that H-FDD user equipment does not affect full FDD subscriber equipment, existing FDD frame structure can be used to configure H-FDD structure.H-FDD frame structure needs the duration for distributing to the downlink/uplink switching often organized, and needs to arrange the free time switched for carrying out downlink/uplink (or uplink/downlink) in down link or up link district.At this moment, can configure the gap of distribution in units of subframe, this gap is used for point duration being used in downlink/uplink switching and does not affect F-FDD subscriber equipment.The subframe being used for downlink/uplink switching and distribution can be set in downlink region or up link district.

At this moment, the gap of the switching between can existing in downlink region or up link district according to point being used in free time or the position of subframe that is perforated for each group.Therefore, between each group, there is the gap for switching the duration, and the H-FDD frame structure alignd with FDD frame structure of the channel width for 5/10/20MHz can be represented as shown in Figure 12 and Figure 13 below.

Figure 12 and Figure 13 illustrates the example of the H-FDD frame structure in AAI system without DLgap respectively and does not have the figure of example of H-FDD frame structure of ULgap.

Because the FDD frame of the channel width of 5MHz, 10MHz and 20MHz comprises first kind subframe, the subframe being used in free time is therefore divided to be first kind subframe.At this moment, divide be used in free time or the position of subframe that is perforated can according to distribute to two groups district length and change.Therefore, being perforated or dividing the position being used in the subframe of free time to be only exemplary in Figure 12 and Figure 13, and be not limited to the example of Figure 12 and 13.

As shown in Figure 12, in order to the gap that the downlink/uplink arranged for H-FDD user equipment switches, can distribute in up link district and switch the duration.Owing to being provided with the free time for switching in up link district, in downlink region, therefore there is not the DLgap between two groups.As FDD frame structure, comprise first kind subframe with the H-FDD frame structure of the channel width of 20MHz for 5MHz, 10MHz and frame should be kept to align.Therefore, consider the reception to useful signal of H-FDD user equipment, the number of the subframe of distributing for the switching of down link and up link in up link district needs to be at least two or larger.

Contrary with the H-FDD frame structure shown in Figure 12, in the H-FDD frame structure in fig. 13, for free time distributes subframe in downlink region, for the duration that downlink/uplink switches.In this case, in up link district, do not deposit gap between the two groups.And, downlink/uplink is switched, for each in downlink region and up link district, a subframe can be distributed and punch for free time or to it.

H-FDD user equipment and/or F-FDD subscriber equipment can be received for downlink/uplink switching and the information of the subframe of distribution from base station by superframe header or additional broadcast information (ABI).At this moment, with to switch for downlink/uplink and subframe configuration information corresponding to the information of the subframe of distributing comprises the information of number of subframes, position (or index) information of subframe and switch district's information (down link or up link) of the subframe of distributing for downlink/uplink.When F-FDD subscriber equipment, because H-FDD frame structure is not subject to the impact of existing FDD frame structure, therefore F-FDD subscriber equipment can use subframe that is that distribute for free time or that be perforated to send signal and data.

As shown in figure 12 and figure 13, the 16m H-FDD user equipment belonging to each group should receive from the leading useful signal of the such as superframe header and A-of base station transmission.Therefore, in order to H-FDD user equipment receives such useful signal, do not send any signal from the up link district overlapping with the downlink region that useful signal is sent to (the first subframe of frame).In other words, the overlapping duration can be set to free time.Therefore, in order to H-FDD user equipment receives such useful signal, a UL subframe of frame can be set to free time in H-FDD frame structure.But in 16m FDD frame structure, by base station only and superframe header leading from the first subframe transmission A-of the first frame in superframe, and it is leading only to send A-from the first subframe of other frame in superframe.

But in the frame structure the first subframe of frame being set to free time is inefficent to make H-FDD user equipment receive useful signal.Therefore, in order to reduce the free time of subframe, DU_OFFSET value can be sent to H-FDD user equipment, thus up link can be used when not punching to the first subframe.In this case, DU_OFFSET value represents the timing off-set value of the starting point from the starting point of downlink frame to uplink frame.At this moment, DU_OFFSET value can according to the starting point of downlink frame the starting point of uplink frame had on the occasion of or negative value.

Such as, if the beginning of uplink frame is before the beginning of downlink frame, then DU_OFFSET value has negative value.Leading owing to only sending A-from other frames except the first frame of superframe, therefore, in up link district, be arranged on other frame place except the subframe overlapping except the first frame of the superframe with down link by being used for receiving leading free time.Therefore, if consider such free time and arrange DU_OFFSET value, such as shown in figure 12 and figure 13, then DU_OFFSET value is set to TTG2+ symbol duration by base station, these settings are sent to H-FDD user equipment by superframe header or additional broadcast information (ABI).Receive the H-FDD user equipment of such signal from base station with uplink frame the time difference equaling DU_OFFSET relative to downlink frame.In like fashion, control DU_OFFSET value, the first subframe does not need to be arranged for free time or to be perforated at other frame place except the first frame.Therefore, advantage is can more effectively use up link district.And, because it does not affect the FDD frame structure of the subframe comprising six symbols, therefore, existing F-FDD subscriber equipment is not affected.At this moment, DU_OFFSET value can be defined in every way, represented by formula 7 below and formula 8.

[formula 7]

DU_OFFSET≥TTG2+PS_1Symbol

DU_OFFSET＜Symbols_subframe×PS_1Symbol-RTG2

DU_OFFSET＜Symbols_subframe×PS_1Symbol+PS_Idle-RTG1)

In this case, PS_1Symbol represents the PS number of every symbol, and Symbols_subframe represents the number of symbols of every subframe.

Formula 8 below symbol rank is passed through can represent above-mentioned definition.

[formula 8]

DU_OFFSET≥ceil(TTG2+PS_1Symbol，PS_1Symbol)，

DU_OFFSET≤ceil(Symbols_subframe×PS_1Symbol-RTG2，PS_1Symbol)，

DU_OFFSET≤ceil(Symbols_subframe×PS_1Symbol+PS_Idle-RTG1，PS_1Symbol)

In this case, PS_1Symbol represents the PS number of every symbol, and Symbols_subframe represents the number of symbols of every subframe, and ceil represents the functional symbol obtained closest to the maximum integer of decimal point.

And the time sequence parameter required by switching that can define as represented by formula 9 below in H-FDD frame structure between each group.

[formula 9]

RTG1＝Symbols_subframe×PS_1Symbol+Idle-TTG1

RTG2＝Symbols_subframe×PS_1Symbol-TTG2

TTG1+RTG1＝Symbols_subframe×PS_1Symbol+PS_Idle

TTG2+RTG2＝(Symbols_subffame-1)×PS_1Symbol

In this case, obtain TTG1 >=α, wherein α represents the minimum TTG1 of frame requirement, and TTG1 can not every frame and change or can be sent out in units of PS as superframe header message.

Further, obtain TTG2 >=β, wherein β represents the minimum TTG2 of frame requirement, and TTG2 can not every frame and change or can be sent out in units of PS as superframe header message.

PS_1Symbol represents the PS number of every symbol, and Symbols_subframe represents the number of symbols of every subframe, wherein the number of symbols of first kind subframe is 6, the number of symbols of Second Type subframe is 7, the number of symbols of the 3rd type subframe is 5, and the number of symbols of the 4th type subframe is 9.And the PS number-Symbols_frame × PS_1Symbol of the every frame of PS_Idle=.

In addition, H-FDD user equipment can use the DU_OFFSET value received from base station by superframe header or additional broadcast information to identify the starting point in up link district.In addition, the subscriber equipment belonging to each group can use the other H-FDD frame parameter (position (or index) of the subframe of the size in the number of subframes such as, often organized, configuration information, DLgap/ULgap, gap, the position in gap, punching, the number of subframes of punching, TTG1, TTG2, RTG1 and RTG2) received from base station by superframe header or additional broadcast information (ABI).

If require change gap in H-FDD frame structure, then subframe can be perforated.The subframe be perforated does not distribute to H-FDD user equipment.Because H-FDD user equipment should receive superframe header and leading, therefore can to there is superframe header and sub-frame of uplink (such as, the first sub-frame of uplink) corresponding to leading descending sub frame punches.

In the frame that there is superframe header, can carry out punch (can not punch to the sub-frame of uplink of correspondence at the frame place without superframe header) next sub-frame of uplink (such as, the second sub-frame of uplink) that there is superframe header and leading descending sub frame for change gap.Alternatively, in order to ensure the change gap (in units of symbol) at subframe place with superframe header, such as, 7 OFDMA symbol are configured by Second Type subframe, corresponding next sub-frame of uplink (such as, the second sub-frame of uplink) is not perforated but can be allocated for data input and data output.And last sub-frame of uplink can be perforated for change gap.

For the above reasons, the subframe (can not distribute to the subframe of H-FDD user equipment) of punching can be present in up link and/or down link and sentences and operate for H-FDD.Base station can utilize other resource except the sub-frame of uplink be perforated to be H-FDD user equipment operation dispatching.H-FDD user equipment can be identical based on HARQ (hybrid automatic repeat-request) sequential with the F-FDD frame structure except the subframe be perforated HARQ sequential operate.In other words, based on the sub-frame of uplink of the HARQ sequential of F-FDD and punching, base station can consider that descending sub frame (processing time) utilization except system in define descending sub frame except other resource corresponding with sub-frame of uplink carrys out the scheduling for H-FDD user equipment performs.If descending sub frame needs to be perforated, then also can the sub-frame of uplink corresponding with this descending sub frame be punched.

When base station is H-FDD user equipment operation dispatching, consider TTG and RTG, the difference corresponding at least two or more may be occurred in the number of subframes of any descending sub frame distributed in frame by a H-FDD user equipment and any sub-frame of uplink.In other words, one or more subframe may be used for down link to up link transition period or up link to the change gap (if free time is used for RTG, may there is exception) of down link transition period.When the subframe of punching at up link place is minimized, the flexibility of the scheduling for H-FDD user equipment can be maximized.

Figure 14 is the figure of the example that F-FDD frame structure in AAI system, FDD frame structure and H-FDD frame structure are shown.

(a) of Figure 14 illustrates the example of the F-FDD frame structure for F-FDD subscriber equipment, (b) of Figure 14 illustrates the example of the F-FDD frame structure for F-FDD subscriber equipment and base station, and (c) of Figure 14 illustrates the example of the H-FDD frame structure for H-FDD user equipment.

First sub-frame of uplink UL0 and the second sub-frame of uplink UL1 can be respectively allocated as idle subframe, for superframe header and leading reception, and the distribution of change gap based on the HARQ sequential of F-FDD.In other words, the first sub-frame of uplink UL0 and the second sub-frame of uplink UL1 is not assigned to H-FDD user equipment.Therefore, also H-FDD user equipment is not assigned to corresponding to the 5th descending sub frame DL4 of the first sub-frame of uplink UL0 and the second sub-frame of uplink UL1 and the 6th descending sub frame DL5.But if there is no superframe header, then the second sub-frame of uplink UL1 can be assigned to H-FDD user equipment.8th sub-frame of uplink UL7 can be set to for up link to downlink handover free time.But if RTG is enough for free time, then the 8th sub-frame of uplink UL7 and the 4th descending sub frame UL3 corresponding to the 8th sub-frame of uplink UL7 can be assigned to H-FDD user equipment.In like fashion, when the subframe be perforated at up link place is minimized, the flexibility of the scheduling for H-FDD user equipment can be maximized.

Figure 15 is the figure of the example that H-FDD frame structure in AAI system is shown.

In the another aspect of the execution mode of Figure 14, does not perform grouping to comprising DL0, DL1, DL2, (DL3), UL4, UL5, UL6, the H-FDD user equipment of group 1 of (UL7) and the H-FDD user equipment of the group 2 that comprises DL0, UL2, UL3, UL4, DL6, DL7, and can pass through to dispatch resource is distributed to H-FDD user equipment neatly.

In other words, consider that HARQ sequential can use the first descending sub frame DL0 all the time and correspond to the 5th sub-frame of uplink UL4 of the first descending sub frame DL0, and two groups can be there are based on the punching to subframe required by the change gap of H-FDD user equipment.And base station can be considered the change gap of H-FDD user equipment based on all resources existed in two groups and be each H-FDD user equipment suitably operation dispatching (or additionally sending (broadcast or clean culture by Message recover signature channel, MAP) with signal).In this case, the subframe index of the F-FDD frame structure shown in (a) of Figure 14 is used to represent subframe index.This index can change for H-FDD frame structure.

As mentioned above, consider H-FDD (Half-Frequency Division Duplex) scheme and F-FDD (full Frequency Division Duplexing (FDD)) scheme, throughput of system can be strengthened to maximum magnitude.At this moment, throughput of system can be subject to F-FDD and to handle up quantitative limitation.In order to the angle from throughput and signaling is on F-FDD operation not impact, not preferably, the F-FDD subscriber equipment coexisted with H-FDD user equipment operates with lower throughput.And if F-FDD subscriber equipment and H-FDD user equipment coexist, then not preferably, F-FDD frame structure changes due to additional signaling.In addition, in order to not affect for ascending control channel, design is needed not have the frame structure of the 3rd type subframe of five OFDMA symbol.

In order on F-FDD operation not impact, can operate in F-FDD frame structure that H-FDD user equipment uses for H-FDD and some subframes are punched.It can be the resource be not perforated that H-FDD user equipment distributes from base station by dispatching.

Figure 16 is the figure of the element that device 50 is shown.

With reference to Figure 16, device 50 can be subscriber equipment or base station.And device 50 comprises processor 51, memory 52, radio frequency (RF) unit 53, display unit 54 and user interface section 55.The layer of radio interface protocol is realized in processor 51.Processor 51 provides chain of command and user face.The function of each layer can realize in processor 51.Processor 51 can comprise contention resolved timer.Memory 52 is connected and storage operation system, application program and generic-document with processor 51.If device 50 is subscriber equipment (UE), then display unit 54 can show various information, and known LCD (liquid crystal display), OLED (Organic Light Emitting Diode) etc. can be used to realize.User interface section 55 can be constructed by the combination of the known users interface of such as keyboard and touch-screen.RF unit 53 is connected with processor 51 and sends or receive radio signals.RF unit 53 comprises sending module (not shown) and receiver module (not shown).

The layer of the radio interface protocol between subscriber equipment and networking can be divided into ground floor (L1), the second layer (L2) and third layer (L3) based on the lower layer of three of Open System Interconnection (OSI) model known in communication system.Physical layer (or PHY layer) belongs to ground floor, and provides formation transfer service by physical channel.Radio resource controls (RRC) layer and belongs to third layer, and between UE and networking, provide control radio resource.UE and networking exchange RRC information by rrc layer.

Aforementioned embodiments is realized by the structural element of the present invention of predefined type and the combination of feature.Each structural element or feature should optionally be considered except as otherwise noted.Each structural element or feature can when not implementing in conjunction with when other structural element or feature.And, some structural elements and/or feature can combination with one another to form embodiments of the present invention.The order of the operation described in embodiments of the present invention can change.Some structural elements of an execution mode or feature can comprise in another embodiment, or can be replaced by corresponding structural element or the feature of another execution mode.In addition, to be appreciated that, quoting some claims that specific rights requires can pass through to revise to add new claim to form after execution mode or the application submit to the other claim combinations of other claim quoted except specific rights requires.

Can be realized by various device according to the embodiment of the present invention, such as, can be realized by hardware, firmware, software or their combination.If realized by hardware according to the embodiment of the present invention, then embodiments of the present invention can be passed through one or more application-specific integrated circuit (ASIC) (ASIC), digital signal processor (DSP), digital signal processing device (DSPD), programmable logic device (PLD), field programmable gate array (FPGA), processor, controller, microcontroller, microprocessor etc. and realize.

If realized by firmware or software according to the embodiment of the present invention, then embodiments of the present invention can be implemented by the type performing the module of above-mentioned functions or operation, process or function.Software code can store in a memory cell and can be driven by processor.Memory cell can be positioned at the inside of processor or outside by various known devices data be sent to processor and receive data from processor.

Those skilled in the art will be appreciated that, the present invention can implement with other ad hoc fashion when not departing from spirit of the present invention and essential feature.Therefore, above execution mode comes to be understood to exemplary and nonrestrictive in all respects.Scope of the present invention should be determined by the reasonable dismissal of claims, and all changes fallen in equivalency range of the present invention are all intended within the scope of the invention involved.

Industrial applicability

The frame structure using support Half-Frequency Division Duplex (H-FDD) to operate is applied to the mobile communication system of such as 3GPP LTE, LTE-A, IEEE 802.16m system etc. in the method for travelling carriage (MS) place's executive communication.

Claims (14)

1. use in mobile communication system and support that the FDD frame structure of Half-Frequency Division Duplex H-FDD operation performs a method for H-FDD operation at Half-Frequency Division Duplex travelling carriage H-FDD MS place, said method comprising the steps of:

According to leading and for the base station scheduling of change gap between guaranteeing to send and receive for receiving superframe header SFH or A-, send signal by least one sub-frame of uplink except the first sub-frame of uplink of FDD frame, the second sub-frame of uplink and last sub-frame of uplink;

Wherein, the first sub-frame of uplink of described FDD frame, the second sub-frame of uplink and last sub-frame of uplink are configured to the idle subframe of described H-FDD MS;

Wherein, described first sub-frame of uplink is positioned at the beginning of described FDD frame, and described in described FDD frame the second sub-frame of uplink followed by described first sub-frame of uplink; And

Wherein, described first sub-frame of uplink aligns with the first descending sub frame in the time domain of described FDD frame.

2. method according to claim 1, wherein, the descending sub frame corresponding to the hybrid automatic repeat-request HARQ sequential of described first sub-frame of uplink, the second sub-frame of uplink and last sub-frame of uplink is configured to the idle subframe of described H-FDD MS further.

3. method according to claim 1, described method is further comprising the steps of:

Described superframe header SFH is received from BS or described A-is leading by described first descending sub frame.

4. method according to claim 1, wherein, the channel width of uplink frame or downlink frame is any one in 5MHz, 10MHz and 20MHz, and cyclic prefix CP length is 1/8 of useful symbol lengths.

5. method according to claim 1, wherein, the first sub-frame of uplink in described idle subframe is not scheduled, so that described H-FDD MS receives described SFH in described first descending sub frame or described A-is leading.

6. method according to claim 1, wherein, the second sub-frame of uplink in described idle subframe and last sub-frame of uplink are not scheduled, to guarantee to send the change gap between reception.

7. use and support that the Frequency Division Duplexing (FDD) frame FDD structure of Half-Frequency Division Duplex H-FDD operation base station BS place in mobile communication system performs a method for H-FDD operation, said method comprising the steps of:

In order to H-FDD MS receives leading and at least one sub-frame of uplink that is that dispatch except the first sub-frame of uplink of FDD frame, the second sub-frame of uplink and last sub-frame of uplink for the change gap between guaranteeing to send and receive of superframe header SFH or A-;

Wherein, the first sub-frame of uplink of described FDD frame, the second sub-frame of uplink and last sub-frame of uplink are configured to the idle subframe of H-FDD MS;

Wherein, described first sub-frame of uplink is positioned at the beginning of described FDD frame, and described in described FDD frame the second sub-frame of uplink followed by described first sub-frame of uplink; And

Wherein, described first sub-frame of uplink aligns with the first descending sub frame in the time domain of described FDD frame.

8. method according to claim 7, wherein, the descending sub frame corresponding to the hybrid automatic repeat-request HARQ sequential of described first sub-frame of uplink, the second sub-frame of uplink and last sub-frame of uplink is configured to the idle subframe of described H-FDD MS further.

9. method according to claim 8, described method is further comprising the steps of:

Data are sent to described H-FDD MS by other descending sub frame of one or more except described descending sub frame.

10. method according to claim 8, described method is further comprising the steps of:

Described superframe header SFH is sent to described H-FDD MS or described A-is leading by described first descending sub frame.

11. 1 kinds of Half-Frequency Division Duplex travelling carriage H-FDD MS using the FDD frame structure execution H-FDD supporting Half-Frequency Division Duplex H-FDD operation to operate in mobile communication system, described H-FDD MS comprises:

Transmitter; And

Processor;

Wherein, described processor is configured to for controlling:

Described transmitter, according to leading and for the base station scheduling of change gap between guaranteeing to send and receive for receiving superframe header SFH or A-, sends signal by least one sub-frame of uplink except the first sub-frame of uplink of FDD frame, the second sub-frame of uplink and last sub-frame of uplink;

Wherein, the first sub-frame of uplink of described FDD frame, the second sub-frame of uplink and last sub-frame of uplink are configured to the idle subframe of described H-FDD MS;

Wherein, described first sub-frame of uplink is positioned at the beginning of described FDD frame, and described in described FDD frame the second sub-frame of uplink followed by described first sub-frame of uplink; And

Wherein, described first sub-frame of uplink aligns with the first descending sub frame in the time domain of described FDD frame.

12. H-FDD MS according to claim 11, wherein, the idle subframe of described H-FDD MS is configured to further corresponding to the descending sub frame of the hybrid automatic repeat-request HARQ sequential of described first sub-frame of uplink, the second sub-frame of uplink and last sub-frame of uplink.

13. 1 kinds of base station BSs using the FDD frame structure supporting Half-Frequency Division Duplex H-FDD to operate to send resource allocation information in mobile communication system, described base station comprises:

Processor, this processor is configured in order to H-FDD MS receives leading and at least one sub-frame of uplink that is that dispatch except the first sub-frame of uplink of FDD frame, the second sub-frame of uplink and last sub-frame of uplink for the change gap between guaranteeing to send and receive of superframe header SFH or A-;

Wherein, the first sub-frame of uplink of described FDD frame, the second sub-frame of uplink and last sub-frame of uplink are configured to the idle subframe of H-FDD MS;

Wherein, described first sub-frame of uplink is positioned at the beginning of described FDD frame, and described in described FDD frame the second sub-frame of uplink followed by described first sub-frame of uplink; And

Wherein, described first sub-frame of uplink aligns with the first descending sub frame in the time domain of described FDD frame.

14. base stations according to claim 13, wherein, the descending sub frame corresponding to the hybrid automatic repeat-request HARQ sequential of described first sub-frame of uplink, the second sub-frame of uplink and last sub-frame of uplink is configured to the idle subframe of described H-FDD MS further.