CN1747594A - Alternate Signaling Transmission Methods - Google Patents

Abstract

A signaling transmission method, comprising the steps of: determining the minimum scheduling interval; dividing the uplink and downlink control channels; according to the transmission intervals of various uplink signaling, dividing the uplink signaling into several parts, different parts in different time Alternate transmission; the base station distinguishes the content of the uplink signaling through a time-related parameter; according to the transmission time interval of various downlink signaling, the downlink signaling is divided into several parts, and different parts are sent alternately at different times; the user The device distinguishes the downlink signaling content through a time-related parameter. The present invention utilizes the characteristics that different signaling has different transmission intervals, divides the signaling into several parts, utilizes one transmission channel and one code channel, and alternately sends different parts of the signaling at different times, saving channel resources while , which is applicable to the case where the signaling burden is heavy. The receiver judges the content of the received signaling through a time-related parameter, without adding additional signaling overhead.

Description

Alternate Signaling Transmission Methods

technical field

The present invention relates to uplink data services, in particular to a signaling transmission method for uplink channel enhancement (EUCH for short).

Background technique

Uplink dedicated channel enhancement is a research project proposed in version 6 of the Third Generation Partnership Project (hereinafter referred to as 3GPP) and being standardized. The purpose of the EUDCH is to effectively manage and plan the uplink transmission resources through the wireless network, improve the uplink capacity of the system, and make it suitable for the transmission of bursty data services. By improving the performance of the uplink dedicated transmission channel, the coverage and throughput of the cell are improved, the uplink transmission rate is increased, and the uplink delay is reduced. For the Time Division Multiplexing (abbreviated as TDD) system, it is not finally determined whether the object of uplink enhancement is a shared channel or a dedicated channel. The corresponding name of this research project in the TDD system is uplink channel enhancement (hereinafter referred to as EUCH).

The existing technical documents related to the third generation mobile communication TDD system have not formulated the EUCH signaling transmission mechanism. The past practice is to refer to the methods and mechanisms in WCDMA, combined with the characteristics of the TDD system itself, to formulate the corresponding signaling transmission mechanism. Hybrid Automatic Repeat Request (abbreviated as HARQ) and Base Station Controlled Scheduling (abbreviated as Scheduling) are two key technologies of EUDCH/EUCH. The WCDMA system EUDCH-related technical documents define the content of the physical layer (layer 1, L1 for short) signaling used for Scheduling and HARQ, and list various ways that may be used for uplink and downlink signaling transmission. However, the specific transmission method and mechanism are not given. For the WCDMA system, a suggested signaling transmission mechanism is: using two channel codes and two transmission channels to transmit uplink signaling. "Scheduling Information" (abbreviated as SI) is transmitted on a Scheduling Information Channel (abbreviated as SICH), and the transmission time interval (abbreviated as TTI) is 10ms. The "Transport Format and Resource Indication" (TFRI for short) and the "New Data Indication" (NDI for short) related to HARQ are sent by using the uplink Enhanced Dedicated Control Channel (E-DCCH for short), and the TTI is 2ms.

Due to some characteristics of the physical layer of the TDD system, the signaling mechanism proposed in WCDMA is not suitable for the TDD system. The reasons are as follows:

1) The uplink and downlink codeword resources of the TDD system are strictly limited, with a maximum of 16 code channels per time slot. If the method once suggested in WCDMA is used, two channel codes are allocated for each uplink enhanced user equipment (referred to as UE) for transmission of uplink signaling. In addition, channel resources need to be allocated for transmission of downlink signaling. The transmission occupies too many channel resources.

2) The TTI (hereinafter referred to as TTI _Ser ) of the EUCH traffic channel in the TDD system has not yet been determined. 5ms and 10ms are two possible choices. A longer TTI will reduce the performance gain introduced by HARQ and Scheduling. Considering that the maximum spreading factor of TDD is 16, Turbo coding efficiency and the highest achievable uplink transmission rate, it is very possible to choose TTI _Ser of 10ms. The transmission of uplink signaling in the TDD system does not need to use two different TTI lengths.

3) There is no soft handover in TDD systems. Therefore, some signaling transmission problems introduced by soft handover in WCDMA do not need to be considered when designing the signaling transmission mechanism of the TDD system.

4) Unlike WCDMA, there is no dedicated physical control channel (DPCCH for short) in the TDD system Rel99 and Rel4 versions. A Transport Format Joint Indication (TFCI for short) is transmitted together with data on a Dedicated Physical Data Channel (DPDCH for short). When designing the EUCH uplink and downlink signaling transmission mechanism, the transmission method of the TFCI needs to be considered.

The current situation is that the transmission mechanism of the uplink and downlink signaling of the EUCH service in the TDD system has not yet been formulated. But because the TDD system is different from the characteristics of the WCDMA physical layer, the existing proposed method of WCDMA is not suitable for the TDD system.

Contents of the invention

The purpose of the present invention is to provide an alternate transmission method of uplink and downlink signaling.

In order to achieve the above object, a signaling transmission method, comprising steps:

Determine the minimum scheduling interval;

Divide uplink and downlink control channels;

According to the transmission interval of various uplink signaling, the uplink signaling is divided into several parts, and different parts are sent at different times;

The base station distinguishes the uplink signaling content through a time-related parameter;

According to the transmission time interval of various downlink signaling, the downlink signaling is divided into several parts, and different parts are sent at different times;

The user equipment distinguishes the downlink signaling content through a time-related parameter.

The present invention utilizes the characteristics that different signaling has different transmission intervals, divides the signaling into several parts, utilizes one transmission channel and one code channel, and alternately sends different parts of the signaling at different times, saving channel resources while , which is applicable to the case where the signaling burden is heavy. The receiver judges the content of the received signaling through a time-related parameter, without adding additional signaling overhead.

Description of drawings

Fig. 1 is the minimum scheduling interval of the EUCH service in the LCR-TDD system (TTI _Ser = 10ms, TTI _UCtrl = TTI _DCtrl = 5ms), where,

101 Node-B Nth subframe;

102 The 0th time slot of the Nth subframe of Node-B;

103 UE Nth subframe;

104 The 0th time slot of the Nth subframe of the UE.

Fig. 2 is the minimum scheduling interval of the EUCH service of the LCR-TDD system (TTI _Ser =10ms, TTI _UCtrl =TTI _DCtrl =10ms), wherein,

201 Node-B Nth subframe;

202 The 0th time slot of the Nth subframe of Node-B;

203 UE Nth subframe;

204 The 0th time slot of the Nth subframe of the UE.

Fig. 3 is the uplink signaling transmission method, wherein,

301 Scheduling information SI, sent in the first subframe of TTI M (UE's Nth subframe);

302 _HOB and E-TFI are bundled and sent in the second subframe of TTI M (the N+1th subframe of the UE).

Fig. 4 is a downlink signaling transmission method, wherein,

401 ACK/NAK is sent in the first subframe of TTI M (the Nth subframe of Node-B);

402 Scheduling assigns SA to be sent in the second subframe of TTIM (Node-B's N+1 subframe).

Fig. 5 is that the alternate transmission mechanism is used in the LCR-TDD system, the EUCH uplink control channel and the EUCH traffic channel are allocated in the same time slot (TTI _Ser = 10ms, TTI _UCtrl = TTI _DCtrl = 5ms), wherein, 501 EUCH traffic channel HARQ process 1 data transmitted;

502 EUCH uplink control signaling, including SI (if new data arrives in the UE buffer, it will be sent in the first subframe included in the corresponding TTI _Ser );

503 EUCH downlink control signaling, including ACK/NAK (sent in the first subframe included in each TTI _Ser );

504 EUCH uplink control signaling, including H _OB and E-TFI (sent in the second subframe included in each TTI _Ser );

505 EUCH downlink control signaling, including SA (sent in the second subframe included in the TTI _Ser corresponding to the SI);

506 Data transmitted by EUCH traffic channel HARQ process 2.

Fig. 6 shows that the alternate transmission mechanism is used in the LCR-TDD system, the EUCH uplink control channel and the EUCH traffic channel are allocated in different time slots (TTI _Ser = 10ms, TTI _UCtrl = TTI _DCtrl = 5ms), wherein,

601 data transmitted by EUCH traffic channel HARQ process 1;

602 EUCH uplink control signaling, including SI (if new data arrives in the UE buffer, it will be sent in the first subframe included in the corresponding TTI _Ser );

603 EUCH downlink control signaling, including ACK/NAK (sent in the first subframe included in each TTI _Ser );

604 EUCH uplink control signaling, including H _OB and E-TFI (sent in the second subframe included in each TTI _Ser );

605 EUCH downlink control signaling, including SA (corresponding to the second subframe transmission contained in the TTI _Ser where the SI is located);

606 Data transmitted by EUCH traffic channel HARQ process 2.

Detailed ways

1. Definition and determination method of scheduling interval

The present invention provides a clear definition of the involved scheduling interval (indicated by I _Sch ). The scheduling interval is an important parameter included in the scheduling assignment (abbreviated as SA), which indicates the length of valid time of the SA. The effective time of the SA starts from the moment when the UE starts to transmit at the rate assigned by the SA, and lasts for one I _Sch before ending. The scheduling interval is variable and depends on the arrival rate of new data in the UE buffer and the scheduling decision made by the base station based on the scheduling information (SI for short) sent by multiple UEs. Since the UE can only change the transmission rate at the beginning of the TTI _Ser , the scheduling interval is an integer multiple of the TTI _Ser . For the TDD system, SI and SA are sent in designated time slots, there is a minimum scheduling interval, which should satisfy: UE can send SI within the minimum scheduling interval, and receive the SA sent by the base station (hereinafter referred to as Node-B), complete A series of operations such as channel coding and multiplexing start sending at the rate assigned by the newly received SA at the end of the minimum scheduling interval. The present invention further provides a method for determining the minimum scheduling interval. The relationship between the minimum scheduling interval and TTI _Ser , SI sending time, SA sending time, and the processing time required by UE after receiving SA is shown in formula (1):

Among them, I _{Sch_min} is the minimum scheduling interval; T _SA is the time when the UE receives the SA; T _{SI_TTI} is the starting time of the TTI when the UE sends the SI; I _UEP is the processing time interval required by the UE after receiving the SA (UE A series of operations such as channel coding and multiplexing need to be performed according to the rate indicated by SA); TTI _Ser is the EUCH traffic channel transmission time interval; It is an upper integer operation, for example [1.02]=2.

The minimum scheduling interval largely depends on TTI _Ser . In addition, the scheduling interval also depends on the length of TTI (hereinafter referred to as TTI _UCtrl , TTI _DCtrl ) of the control channel for transmitting EUCH uplink and downlink signaling. Because TTI _UCtrl and TTI _DCtrl directly determine the values of T _{SI_TTI} and T _SA .

Figure 1 analyzes the low chip rate time division multiplexing (abbreviated as LCR-TDD) system, TTI _Ser = 10ms, TTI _UCtrl = TTI _DCtrl = 5ms, the minimum scheduling interval of the EUCH service. The EUCH uplink control channel of UE k is assigned to TS1, and the downlink control channel is assigned to TS4. UE K sends SI in TS1 of subframe N, because Node-B needs processing time (in HSDPA, the processing time of Node-B scheduling is 2.33~2.8ms) and SI from other UEs (may be in the same position as UE K’s SI) or different time slots) for scheduling decision, so it is difficult for Node-B to send SA in TS4 of subframe N. The UE receives the SA at TS4 of subframe N+1 at the earliest. If the UE can complete the required channel coding, multiplexing and other operations before the end of TTI M, and transmit at the rate assigned by SA at the beginning of TTI M+I, the minimum scheduling interval at this time is 1×TTI _Ser = 10ms.

Figure 2 analyzes the LCR-TDD system, TTI _Ser =10ms, TTI _UCtrl =TTI _DCtrl =10ms, the minimum scheduling interval of the EUCH service. UE K sends SI in subframe N and subframe N+1 of TTI M, and receives SA at the earliest in subframe N+2 and subframe N+3 of TTIM+1. Complete the required channel coding, multiplexing and other operations before the end of TTI M+1, and send at the rate assigned by SA at the beginning of TTI M+2, and the minimum scheduling interval at this time is 2×TTI _Ser =20ms.

From the above analysis of the minimum scheduling interval, it can be seen that for the LCR-TDD system, 10msTTI _Ser is used, if TTI _UCtel =TTI _DCtrl =5ms, then the scheduling interval is n×10ms, n=1, 2, 3,..., if TTI _UCtrl =TTI _DCtrl =10ms, then the scheduling interval is n×10ms, n=2, 3, 4....

2. Division of uplink and downlink dedicated control channels

The present invention assigns uplink and downlink control channels to each uplink enhanced UE for transmission of uplink and downlink signaling. The uplink and downlink control channels respectively occupy one code channel of the uplink and downlink time slots, TTI _UCtrl = TTI _DCtrl < TTI _Ser . Wherein, the uplink control channel can be divided into the same or different time slots as the EUCH traffic channel.

3. Uplink signaling content and corresponding transmission interval

In order to support HARQ and Scheduling at the same time, the uplink signaling includes SI, _HOB and E-TFI. Among them, SI contains the buffer state and remaining power information of UE, which is about 8 bits; H _OB contains HARQ process ID and added redundancy version information, which is about 4 bits; E-TFI contains current UE effective TFC information, which is about 4 bits. Assuming that the UE adopts the N-Stop & Wait HARQ method (NS&W HARQ for short) to continuously send data, the UE needs to send H _OB for the corresponding HARQ process every TTI _Ser . Node-B uses TTI _Ser as a unit to demultiplex and decode the received data according to the information provided by E-TFI. The UE needs to send E-TFI every TTI _Ser . The present invention uses the event-triggered periodic reporting method to send SI. If new data arrives in the buffer area of the UE, the UE will send the SI at a specific time (time slot specified for the uplink dedicated control channel) of the specified period (TTI _UCtrl ), and report buffering zone occupancy and available power. The transmission interval of SI depends on the length of TTI _UCtrl and the arrival of new data in UE buffer.

4. Uplink signaling transmission method

The uplink control channel designed in the present invention adopts TTI _UCtrl smaller than TTI _Ser . The advantage of this method is that the Node-B can start to make scheduling decisions after receiving the SI at the end of the TTI _UCtrl in which the UE sends the SI, without waiting for the end of the TTI _Ser . This will give Node-B more time to process the SI, which is beneficial to shorten the minimum scheduling interval. In order to reduce the impact of E-TFI transmission on data transmission, the existing scheme of sending E-TFI and data together in Rel99 and Rel4 is not adopted; at the same time, in order to reduce the system resources occupied by uplink signaling transmission, WCDMA-related proposals are not adopted The scheme proposed in the paper uses two code channels and two transmission channels to transmit SI, E-TFI and _HOB respectively. The present invention provides the following uplink signaling transmission scheme: according to the sending interval of the uplink signaling content (see step 3), the uplink signaling is divided into several parts, and different parts are transmitted alternately at different times. This signaling transmission scheme can be used in a situation where the burden of uplink signaling is heavy.

For example, for the LCR-TDD system, in the case of TTI _UCtrl = 5ms, the uplink signaling is divided into two parts, and the SI is placed in the TTI _UCtrl corresponding to "the first subframe of TTI _Ser " (the UE's buffer has new data arrival, need to apply for a new rate), put the H _OB and E-TFI in the TTI _UCtrl corresponding to "the second subframe of each TTI _Ser ", and send them alternately.

5. Downlink signaling content and corresponding transmission interval

To support both Scheduling and HARQ, downlink signaling includes SA and ACK/NAK. SA contains information such as the time slot, channel code, modulation mode, TFCS pointer, and scheduling interval assigned by Node-B to the UE, which is about 17 bits. ACK/NAK contains positive/negative response information of the HARQ process, which is 1 bit. Assuming that the UE uses NS&W HARQ to continuously send data, the Node-B needs to send ACK/NAK once per TTI _Ser for different HARQ processes of each UE. The Node-B makes a scheduling decision based on the SI sent by the UE, and generates an SA, and the sending interval of the SA depends on the arrival of the SI and TTI _DCtrl . At the same time, in order to manage uplink ROT resources more effectively, Node-B should send a new SA to the UE before the previous SA expires, and leave enough time for the UE to complete channel coding at the rate assigned by the new SA. A series of operations such as multiplexing.

6. Transmission method of downlink signaling

The downlink dedicated control channel designed in the present invention adopts TTI _DCtrl smaller than TTI _Ser . The advantage of this method is: UE receives SA at the end of TTI _DCtrl in which Node-B sends SA, and can start a series of operations such as channel coding and multiplexing according to the rate assigned by SA, without waiting for the end of TTI _Ser . This will help shorten the minimum scheduling interval. The present invention provides the following downlink signaling transmission scheme: according to the sending interval of the downlink signaling content (see step 5), the downlink signaling is divided into several parts, and different parts are alternately transmitted at different times. This signaling transmission scheme can be used in a situation where the burden of downlink signaling is heavy.

For example, for the LCR-TDD system, in the case of TTI _DCtrl = 5ms, the downlink signaling is divided into two parts, ACK/NAK is placed in the TTI _DCtrl corresponding to "the first subframe of each TTI _Ser ", and SA is set to In the TTI _DCtrl corresponding to "the second subframe of TTI _Ser ", it is sent alternately.

7. Judging the content of uplink and downlink signaling according to time-related parameters

The present invention does not use additional information indication bits to indicate the content of the uplink and downlink signaling, because this needs to introduce additional signaling burden. Instead, the characteristics of the TDD physical layer are fully provided, and the following scheme is provided to distinguish the content of the uplink and downlink signaling: judge the transmitted uplink and downlink signaling by a time-related parameter (for example: system frame number and subframe number in the TDD system) The content of the downlink signaling.

For example, for the LCR-TDD system, TTI _Ser = 10ms, TTI _UCtrol = TTI _DCtrl = 5ms, at this time, one TTI _Ser corresponds to one frame, and the system frame number (SFN for short) and subframe number (SFN' for short) start from zero add up. Divide uplink signaling into two parts, SI is sent in TTI _UCtrl corresponding to "the first subframe of TTI _Ser ", at this time, SFN' of Node-B receiving signaling satisfies SFN'mod 2=0. H _OB and E-TFI are sent in the TTI _UCtrl corresponding to "the second subframe of each TTI _Ser ", at this time, the SFN' of the Node-B receiving the signaling satisfies SFN' mod 2=1. The downlink signaling is divided into two parts, ACK/NAK is sent in the TTI _DCtrl corresponding to "the first subframe of each TTI _Ser ", at this time, the SFN' of the UE receiving the signaling satisfies SFN'mod2=0. The SA is sent in TTI _DCtrl corresponding to "the second subframe of TTI _Ser ", and at this time, the SFN' of the signaling received by the UE satisfies SFN' mod 2=1.

Example

First, take the LCR-TDD system, TTI _Ser = 10ms, TTI _UCtrl = TTI _DCtrl = 5ms, EUCH uplink dedicated control channel and EUCH traffic channel allocated in the same time slot as an example, as shown in Fig. 5 . It is assumed that N=2 S&W HARQ can guarantee continuous transmission of UE data. The UE sends _HOB and E-TFI in the second subframe included in each TTI _Ser , corresponding to different HARQ processes. The sending interval of the SI depends on the arrival of new data in the UE buffer, and it is sent in the first subframe included in the corresponding TTI _Ser . Node-B sends ACK/NAK in the first subframe included in each TTI _Ser , corresponding to different HARQ processes. The sending interval of SA depends on the arrival interval of SI, and it is sent in the second subframe included in the corresponding TTI _Ser . The EUCH uplink dedicated control channel and EUCH traffic channel are allocated in time slot 1, and the EUCH downlink dedicated control channel is allocated in time slot 4. Since new data arrives in the UE buffer, the EUCH uplink signaling 502 sent in subframe N of TTI M contains SI; the EUCH downlink signaling 503 sent includes ACK/NAK information corresponding to HARQ process 1 in TTI M-2. The EUCH uplink signaling 504 sent in subframe N+1 of TTI M contains H _OB and E-TFI, which is the relevant information of the EUCH traffic channel HARQ process 1 transmission data 501; the EUCH downlink signaling 505 sent includes the corresponding subframe N For the SA in SI, the assigned scheduling interval is 4×TTI _Ser =40ms. In TTI M+1 and TTI M+2, no new data arrives in the buffer of the UE, and at subframes N+2 and N+4, the UE does not send the EUCH uplink signaling SI. At TTI M+3, new data arrives in the UE's buffer, and the Node-B does not send the EUCH downlink signaling SA in subframes N+3 and N+5. When new data arrives in the UE's buffer at TTI M+3, the EUCH uplink signaling 502 sent in the N+6th subframe contains SI, and the EUCHF line signaling 503 sent contains ACK/NAK corresponding to HARQ process 2 in TTI M+1 information. The EUCH uplink signaling 504 sent in the N+7th subframe includes H _OB and E-TFI, which is related information of the EUCH traffic channel HARQ process 2 transmission data 506 , and the sent EUCH downlink signaling 505 includes the corresponding SA in 502 . The UE starts sending data at the rate assigned by SA in 505 of TTI N+7 in TTI M+4.

Taking the LCR-TDD system again, TTI _Ser = 10ms, TTI _UCtrl = TTI _DCtrl = 5ms, EUCH uplink dedicated control channel and EUCH traffic channel are allocated in different time slots as an example, as shown in Fig. 6 . The EUCH traffic channel is allocated to time slot 1, the EUCH uplink dedicated control channel is allocated to time slot 2, and the EUCH downlink dedicated control channel is allocated to time slot 4. Since new data arrives in the UE's buffer, the EUCH uplink signaling 602 sent in subframe N of TTI M includes SI; the sent downlink signaling 603 includes ACK/NAK information corresponding to HARQ process 1 in TTIM-2. The EUCH uplink signaling 604 sent in subframe N+1 of TTI M contains H _OB and E-TFI, which is the relevant information of the EUCH traffic channel HARQ process 1 transmission data 601; the EUCH downlink signaling 605 sent includes the corresponding subframe N For the SA in SI, the assigned scheduling interval is 2×TTI _Ser =20ms. In TTI M+1, the UE starts sending data at the rate assigned by SA in TTI M. Since no new data arrives in the UE's buffer zone, the UE does not send the EUCH uplink signaling SI in the N+2 subframe; and in the subframe N+3, the UE does not send the EUCH downlink signaling SA. The EUCH uplink signaling 604 sent by the UE in subframe N+3 includes H _OB and E-TFI, which are related information of data 606 transmitted by HARQ process 2 of the EUCH traffic channel. When new data arrives in the UE's buffer at TTI M+2, the EUCH uplink signaling 602 sent in subframe N+4 includes SI; the EUCH downlink signaling 603 sent includes ACK/NAK information corresponding to HARQ process 1 in TTI M. The EUCH uplink signaling 604 sent in subframe N+5 includes H _OB and E-TFI, which is the relevant information of the EUCH traffic channel HARQ process 1 transmission data 601; the EUCH downlink signaling 605 sent in the corresponding subframe N+4 includes For the SI SA, the assigned scheduling interval is 3×TTI _Ser =30ms. At TTI M+3, the UE starts sending data at the rate assigned by TTI M+2 SAs.

Aiming at the uplink data service of the wireless communication system, the present invention proposes an alternate signaling transmission method, and provides specific implementation methods and rules. The present invention has following effect:

1) A clear definition of the scheduling interval is given. A method to determine the minimum scheduling interval is given.

2) Uplink and downlink dedicated control channels each occupy one code channel, which can save uplink and downlink code channel resources.

3) The transmission time interval of the uplink dedicated control channel is less than the transmission time interval of the uplink enhanced traffic channel (hereinafter referred to as TTI _DCtrl ), and the base station (hereinafter referred to as Node-B) receives scheduling information (hereinafter referred to as SI) at the end of TTI _UCtrl , namely Scheduling decisions can be started, and Node-B has more time to make scheduling decisions, shortening the minimum scheduling interval.

4) The minimum interval for sending scheduling assignments (hereinafter referred to as SA) by NOde-B depends on TTI _DCtrl , TTI _DCtrl < TTI _Ser , shortening the minimum scheduling interval, Node-B has more time to make scheduling decisions,

5) Make full use of the characteristics of the physical layer of the TDD system, and send the SI separately in the TTI _UCtrl corresponding to "the first frame or subframe of the TTI _Ser ". It can be used in situations where the SI burden is heavy, and no changes are made to the existing system.

6) Since the scheduling interval is an integer multiple of TTI _Ser , SI is sent within the TTI _UCtrl corresponding to "the first frame or subframe of TTI _Ser ", giving Node-B more time to make scheduling decisions, which helps to shorten the scheduling interval.

7) Based on the characteristics of the physical layer of the TDD system, the out-of-band signaling of hybrid automatic repeat request (hereinafter referred to as _HOB ) and the uplink enhanced transport format indicator (hereinafter referred to as E-TFI) are combined together, in the corresponding "TTI _Ser It can be sent in TTI _UCtrl within two frames or subframes", which can be used in the case of heavy signaling burden of _HOB and E-TFI, and reduces the impact of E-TFI transmission on data transmission.

8) Based on the characteristics of the physical layer of the TDD system, the SA is sent separately in the TTI _DCtrl corresponding to "the second frame or subframe of the TTI _Ser ". It can be used in the case where the SA burden of downlink signaling is heavy, and no changes are made to the existing system.

9) Since the scheduling interval is an integer multiple of TTI _Ser , SA is sent in the TTI _DCtrl corresponding to "the second frame or subframe of TTI _Ser ", which gives Node-B more time to make scheduling decisions, which is conducive to shortening the scheduling interval .

10) SI, H _OB and E-TFI are sent alternately, and the Node-B distinguishes signaling content through a time-related parameter (for example: system frame number, subframe number). The implementation is simple, no additional signaling is required, and no changes are made to the existing system.

11) SA and ACK/NAK are sent alternately, and the UE distinguishes the signaling content through a time-related parameter (for example: system frame number, subframe number). The implementation is simple, no additional signaling is required, and no changes are made to the existing system.

Claims (8)

1. A signaling transmission method, comprising the steps of: Determine the minimum scheduling interval; Divide uplink and downlink control channels; According to the transmission interval of various uplink signaling, the uplink signaling is divided into several parts, and different parts are sent alternately at different times; The base station distinguishes the uplink signaling content through a time-related parameter; According to the transmission time interval of various downlink signaling, the downlink signaling is divided into several parts, and different parts are sent alternately at different times; The user equipment distinguishes the downlink signaling content through a time-related parameter. 2. by the described method of claim 1, it is characterized in that described definite minimum scheduling interval is calculated as follows: Among them, I _{Sch_min} is the minimum scheduling interval; T _SA is the time when UE receives SA; T _{SI_TTI} is the start time of TTI when UE sends SI; I _UEP is the processing time interval required by UE after receiving SA; TTI _Ser is the EUCH traffic channel transmission time interval; For rounding up operation. 3. The method according to claim 1, further comprising dividing uplink and downlink control channels for each user. 4. The method according to claim 1, wherein the transmission time interval of the uplink control channel is equal to the transmission time interval of the downlink channel, and both are smaller than the transmission time interval of the traffic channel. 5. The method according to claim 1, characterized in that the uplink control channel is allocated in the same or different time slot as the traffic channel. 6. The method according to claim 1, characterized in that E-TFI and _HOB are bundled and sent in one TTI _UCtrl , and SI is sent in another TTIU _Ctrl . 7. The method according to claim 1, characterized in that the scheduling interval is variable and is an integer multiple of the traffic channel transmission time interval. 8. The method according to claim 1, characterized in that the time-related parameter can be a system frame number or a subframe number.

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