CN100433924C - Implement method of uplink/downlink control channel - Google Patents

Abstract

The invention discloses a method for realizing uplink and downlink control channels. Allocate the first shared resource pool, the second resource pool and the third shared resource pool for the uplink control channel; for users who have downlink data to send, the uplink control channel is sent using the first shared resource pool, and the uplink control channel of each user The resource allocation of the user corresponds to the resource allocation status of the user's downlink shared control channel; for a user who has uplink data to send, its uplink control channel is sent using the second shared resource pool, and its uplink control channel is combined with the user's uplink data Channel multiplexing: For users who have no uplink data and downlink data to send, their uplink control channels are sent using the third shared resource pool and carry user identification information. The implementation method of the downlink control channel is similar to the implementation method of the uplink control channel. The invention can reduce the system transmission resources occupied by the uplink control channel and the downlink control channel.

Description

A realization method of uplink/downlink control channel

technical field

The invention relates to the field of wireless communication, in particular to the realization method of the uplink control channel and the downlink control channel.

Background technique

In the High Speed Downlink Packet Access (HSDPA) system, in order to realize the functional characteristics of HSDPA, three new channels are introduced in the physical layer specification: High Speed Downlink Shared Channel (High Speed Downlink Shared Channel) Shared Channel, HS-DSCH), high-speed shared control channel (Shared Control Channel for HS-DSCH, HS-SCCH) and uplink high-speed dedicated control channel (Dedicated Physical Control Channel (uplink) for HS-DSCH, HS-DPCCH). HS-DSCH carries downlink user data; HS-SCCH carries physical layer control signaling used for decoding on HS-DSCH; HS-DPCCH carries uplink control signaling, that is, hybrid automatic retransmission required for physical layer retransmission Transmission request (Hybrid Automatic Repeat Request, HARQ) confirmation message, including confirmation/non-confirmation (ACK/NACK) message, the uplink control signaling carried by HS-DPCCH also includes downlink quality indication information (Channel QualityIndication, CQI) , this quality indication information is used in the base station (Node B) scheduler to decide which terminal to transmit and what the transmission rate is. The transmission of ACK/NACK message and CQI information in HSDPA adopts the way of dedicated channel, that is, a dedicated code channel is designated for each user to transmit these uplink control signaling.

Since the 1990s, multi-carrier technology has become a hot technology in broadband wireless communication. Its basic idea is to divide a broadband carrier into multiple sub-carriers and transmit data on multiple sub-carriers simultaneously. In most system applications, sub-carriers The width of is smaller than the coherence width of the channel, so that on the frequency selective channel, the fading on each subcarrier is flat fading, which reduces the interference between symbols and does not require complex channel equalization, which is suitable for high-speed data transmission. There are many forms of multi-carrier technology. Orthogonal Frequency Division Multiplexing (OFDM) technology is a more representative technology in multi-carrier technology. This technology divides a given channel into many regular channels in the frequency domain. The data signal can be separated from the aliased sub-carriers as long as the sub-carriers are mutually orthogonal.

In an OFDM system, time-frequency resources are used to distinguish different users. As shown in FIG. 1 , the system divides some discrete time-frequency resource blocks for CQI information transmission. In this manner of transmitting CQI information using a dedicated shared CQI channel, the time-frequency resource overhead required for transmitting the CQI information will be very large.

The prior art also provides a transmission method of CQI information, as shown in Figure 2, that is, the CQI signaling of all users is sent together with the uplink data in a time-division multiplexed manner, and the CQI information and the uplink data information occupy the same space frequency band. In this CQI information transmission method, since the CQI feedback information and uplink data occupying the same frequency band must belong to the same user, for a user with uplink data, the user's CQI information is easily time-division multiplexed with its uplink data . Although for these users, there is no need to send pilot frequency and user identification information separately; but for users without uplink data transmission, not only need to send pilot frequency and user identification information for their CQI channels separately, but also this part of idle time-frequency resources It cannot be used by other users, causing a serious waste of resources.

In the HSDPA system, orthogonal codes are used to distinguish different users; if a dedicated CQI channel is still used (that is, a dedicated time-frequency resource is reserved for each user in the system to transmit its CQI information), then In addition to the resources occupied by the pilot frequency of each CQI channel, the time-frequency resource overhead required for transmitting CQI information will be very large. If a shared CQI channel is used, it is inevitable to transmit UE ID information at the same time. This will undoubtedly increase the signaling overhead because it is used to identify the CQI channels of different users. Therefore, it is hoped to have a reasonable CQI channel design method to save time-frequency resources as much as possible to meet system requirements.

Contents of the invention

The invention provides a method for realizing the uplink/downlink control channel, which is used to solve the problem in the prior art that the uplink/downlink control channel needs to occupy more transmission resources.

The method for realizing the uplink control channel provided by the present invention includes: allocating the first shared resource pool, the second shared resource pool and the third shared resource pool for the uplink control channel;

A. For a user who has downlink data to send, its uplink control channel is sent using the first shared resource pool, and the resource allocation of the uplink control channel of each user corresponds to the resource allocation status of the user's downlink shared control channel;

B. For a user who has uplink data to send, its uplink control channel is sent using the second shared resource pool, and its uplink control channel is multiplexed with the user's uplink data channel;

C. For users who have no uplink data and downlink data to send, their uplink control channels are sent using the third shared resource pool and carry user identification information.

According to the above method of the present invention, for a user who has both uplink data and downlink data transmission, its uplink control channel is sent using the first shared resource pool, and the resource allocation of each user's uplink control channel is related to the user's downlink shared control. Corresponds to the resource allocation status of the channel.

According to the above method of the present invention, for a user who has both uplink data and downlink data to send, its uplink control channel is sent using the second shared resource pool, and the uplink control channel of each user is multiplexed with the user's uplink data channel.

The uplink control channel and the user's uplink data channel adopt time division multiplexing, frequency division multiplexing or code division multiplexing, and share the pilot frequency of the uplink data channel.

The resources in the first shared resource pool, the second shared resource pool and the third shared resource pool are orthogonal to each other.

The uplink control channel is a link quality indication CQI channel and/or an ACK channel.

The CQI channel and the ACK channel adopt time division multiplexing, frequency division multiplexing or code division multiplexing, and share a pilot frequency.

The implementation method in A or/and B is executed within the transmission period TTI when CQI information and/or ACK information is fed back.

The present invention also provides a method for implementing a downlink control channel, including: allocating the first shared resource pool or/and the second shared resource pool for the downlink control channel;

For a user who has uplink data to send, its downlink control channel is sent using the first shared resource pool, and the resource allocation of each user's downlink control channel corresponds to the resource allocation status of the user's uplink shared control channel; or/and

For users who have downlink data to send, their downlink control channels are sent using the second shared resource pool, and the downlink control channels and downlink data channels are multiplexed.

According to the above method of the present invention, the third shared resource pool is re-allocated for the downlink control channel;

For users without uplink data and downlink data to send, their downlink control channels are sent using the third shared resource pool and carry user identification information.

According to the above method of the present invention, for users who have both uplink data and downlink data transmission, the downlink control channel is sent using the first shared resource pool, and the resource allocation of each user's downlink control channel is related to the user's uplink shared control. Corresponds to the resource allocation status of the channel.

According to the above method of the present invention, for users who have both uplink data and downlink data to send, the downlink control channel is sent using the second shared resource pool, and the downlink control channel of each user is multiplexed with the user's downlink data channel.

The downlink control channel and the downlink data channel adopt time division multiplexing, frequency division multiplexing or code division multiplexing, and share the pilot frequency of the downlink data channel.

According to the above method of the present invention, the resources in the first shared resource pool, the second shared resource pool and the third shared resource pool are mutually orthogonal.

The beneficial effects of the present invention are as follows:

(1) For the uplink control channel: the present invention sends the uplink control channel in a shared resource pool for the user who has downlink data to send, and the resource allocation of the uplink control channel is the same as the resource allocation status of the user's downlink shared control channel Corresponding, and can be multiplexed with the uplink ACK channel and share the pilot; for users who have uplink data to send, the uplink control channel is multiplexed on the uplink data channel, and the pilot resource is shared with the uplink data channel, thus saving the uplink channel resources, transmission signaling volume and pilot resource overhead.

(2) For the downlink control channel: the present invention sends its downlink control channel in a shared resource pool for users with uplink data transmission, and the resource allocation of the downlink control channel is the same as the resource allocation status of the user's uplink shared control channel Corresponding, and can share pilot resources with the downlink ACK channel; for users who have downlink data to send, the downlink control channel is multiplexed on the downlink data channel, and the pilot resources are shared with the downlink data channel, thereby saving downlink channel resources , Transmission signaling amount and pilot resource overhead.

Description of drawings

FIG. 1 is a schematic diagram of transmitting CQI information through a CQI shared channel in the prior art;

FIG. 2 is a schematic diagram of time-division multiplexing CQI information in uplink data in the prior art;

FIG. 3 is a schematic diagram of CQI information transmission in the present invention.

Detailed ways

The method of the present invention will be described in detail below by taking the uplink control channel CQI channel as an example.

In the downlink adaptive process, for a single user, only when there is downlink data sent in the previous TTI, the uplink ACK/NACK information will be sent in the current TTI, that is, each downlink data channel corresponds to an uplink ACK channel (ACK CH).

Since the ACK/NACK signaling lengths of all users in the system are fixed and equal, and the ACK channel does not participate in scheduling, the time-frequency resource blocks occupied by the ACK channel of each user are equal in size and can be arranged regularly; however, due to downlink sharing The occupation of time-frequency resources by the data channel is determined by the base station scheduler according to the channel conditions. The diversity and real-time changes of channel conditions and the difference in the amount of data for each user lead to the time-frequency resource block allocated by the base station to each user's downlink data channel. The shape of is extremely irregular, and will change every TTI, it is difficult to find a fixed relationship between the uplink ACK channel and the downlink data channel in terms of time-frequency resource allocation.

The downlink shared data channel is specified by the downlink shared control channel (SCCH). Normally, the length of the downlink shared control signaling of each user in the system is also fixed and equal, and the downlink SCCH channel does not participate in scheduling, so The size of the time-frequency resource blocks occupied by the downlink SCCH channel of each user is also equal and can be arranged regularly. Therefore, the time-frequency resource blocks occupied by the downlink SCCH channel and the uplink ACK channel can be corresponded. According to the user's uplink ACK channel, the resource allocation of the user's uplink ACK channel can be deduced according to the resource allocation of the user's downlink SCCH channel. When the base station demodulates the ACK channel, it only needs to distinguish the ACK channels of different users according to the resource occupancy of each user on the downlink SCCH channel. Using this correspondence, for the ACK channel that adopts the shared mode (the ACK channels of different users share a period of time-frequency resources), the user identification information on the ACK channel can be omitted.

The present invention utilizes the above-mentioned corresponding relationship between the ACK channel and the downlink data channel (actually realized through the connection between the ACK channel and the downlink SCCH channel), and describes in detail the implementation method of the CQI channel that does not strictly correspond to the downlink shared control channel .

It is assumed that every few (or one) transmission time intervals (TTIs), all users have to report CQI information to the base station, and the CQI feedback period is controllable for the base station. In the TTI with CQI information feedback, according to whether the user has sent uplink/downlink data (unless otherwise specified in the future, if the user has downlink data to send, it means that the user has sent downlink data in the previous TTI; if the user has uplink data to send, it means There are uplink data transmissions in the current TTI), users can be divided into the following four categories: users with only downlink data, users with only uplink data, users with both downlink data and uplink data, and users with neither downlink data nor User of uplink data. Therefore, the design scheme of the CQI channel can be divided into the following four situations according to the user type:

Case 1: For those users who have downlink data to send but no uplink data to send, send their CQI channels in a shared resource pool, and the resource allocation of the CQI channel corresponds to the resource allocation of the user's downlink shared control channel, so that The transmission of the user identification is omitted, but a pilot is still required to be transmitted separately. In order to further save pilot overhead, the following measures can be taken: For users who have downlink data to send, generally have their own corresponding uplink ACK channels, so these users can also be called users with uplink ACK channels in the current TTI; At this time, the CQI channels of these users and their uplink ACK channels can be multiplexed and sent together in a time division multiplexing, frequency division multiplexing or code division multiplexing manner. In this way, the base station can determine the CQI channel of each user according to the ACK channel of each user; and the ACK channel of each user can be distinguished according to the resource occupation of each user on the downlink SCCH channel as described above. Therefore, the transmission of the user identifier can be omitted on the CQI channel, and the CQI channel and the ACK channel can share pilot resources, thereby further saving pilot overhead. In fact, this still belongs to the correspondence between the CQI channel and the downlink shared control channel, but at this time the correspondence between the CQI channel and the downlink data channel is indirectly realized through the ACK channel. Therefore, it can be considered that the multiplexed transmission of the CQI channel and the ACK channel is a special case of the corresponding transmission of the CQI channel and the downlink data channel.

Case 2: For those users who do not have downlink data to send but have uplink data to send, because the CQI information cannot be sent correspondingly to the downlink data channel as described above. In this case, the CQI channel and the uplink data channel can be multiplexed and sent together in the manner of time division, frequency division or code division. The CQI channel and the uplink data channel share pilot resources. With the multiplexing method adopted, the CQI information can be intercepted very conveniently without sending user identification information on the CQI channel.

Case 3: For those users who send both downlink data and uplink data, their CQI channel information has the following two sending methods:

(a) The CQI information can be sent corresponding to the downlink data channel;

(b) CQI information can also be multiplexed with uplink data and sent together.

For such users, one of the two methods (a) and (b) can be selected according to the actual system requirements.

Situation 4: For those users who have neither downlink data nor uplink data to send, their CQI information can neither be sent corresponding to the downlink data channel, nor can it be sent along with the uplink data. At this time, only a period of time-frequency resources can only be reserved for them. CQI channel usage.

For the sake of illustration, we define that the resource corresponding to the downlink data channel used to transmit CQI information in Case 1 and Case 3 (a) is the first shared resource pool; The resource multiplexed together by the uplink data channel is the second shared resource pool; the independent resource used for transmitting CQI information in Case 4 is the third shared resource pool.

All correspondences between the three types of shared resource pools and the four types of users are shown in Table 1 below. The "√" in the table indicates exactly the corresponding combination described in the cases 1 to 4. "○" in the table indicates that there are possible corresponding combinations other than situations 1 to 4, but these corresponding combinations are either not optimal or have been applied in the existing system, so they are not considered. "×" in the table indicates that the corresponding combination is impossible to exist.

Table I:

Users with only downlink data Users with only uplink data Users who have both downlink and uplink data Users who have neither downlink nor uplink data The first shared resource pool √ × √ × The second shared resource pool × √ √ × The third shared resource pool ○ ○ ○ √

We only care about those combinations corresponding to situations 1 to 4 here. The above four situations can be summarized as follows:

Situation 1: For users with only downlink data, their CQI information is transmitted in the first shared resource pool;

Case 2: For a user with only uplink data, its CQI information is transmitted in the second shared resource pool;

Situation 3: For users who have both downlink data and uplink data, their CQI information can be transmitted in either the first shared resource pool or the second shared resource pool;

Situation 4: For users who have neither downlink data nor uplink data, their CQI information can only be transmitted in the third shared resource pool.

In specific applications, the above four situations can be used individually or in any combination. For example:

Only the method described in Case 1 can be used. For users who only send downlink data, their uplink control information (such as CQI information) is transmitted in the first shared resource pool, and the CQI channel is sent correspondingly to the downlink data channel. Adopt the processing method of existing technology.

It is also possible to only use the method described in Case 2. For those users who only send uplink data, their CQI information can be transmitted in the second shared resource pool, and the CQI channel and its uplink data channel are time-divided, frequency-divided or code-divided. are multiplexed and sent together, and the uplink control channels of other users are processed in the prior art.

It is also possible to only use the method described in Case 3 (a), to transmit the CQI information of users who have both downlink data and uplink data in the first shared resource pool, and use the existing technology for the uplink control channels of other users processing method.

It is also possible to only use the method described in Case 3 (b), to transmit the CQI information of users who have both downlink data and uplink data in the second shared resource pool, and use the existing technology for the uplink control channels of other users processing method.

Or use the methods described in Case 1 and Case 3 (a) at the same time, for users who have downlink data to send, regardless of whether they have uplink data to send, their uplink control information (such as CQI information) is stored in the first shared resource pool The uplink control channels of other users are processed in the prior art.

Or use the methods described in Case 2 and Case 3 (b) at the same time, for those users who have uplink data to send, regardless of whether they have downlink data to send, their uplink control information (such as CQI information) will be stored in the second shared resource The transmission in the pool, and the uplink control channels of other users adopt the processing method of the prior art.

Or use the methods described in Case 3 (a) and Case 3 (b) at the same time. For those users who have both downlink data transmission and uplink data transmission, you can use Case 3 (a) for some of them, and the other part The user adopts the case three (b), and for each user, the case (a) and the case three (b) can also be used alternately; the uplink control channels of other users adopt the processing method of the prior art.

Or adopt the method described in situation one, situation two and situation three (a) at the same time, no matter whether it has uplink data to the user who has downlink data transmission, all send its CQI information in the first shared resource pool; Those users who have no downlink data but have uplink data send their CQI information in the second shared resource pool; the uplink control channels of other users are processed in the prior art.

Or adopt the method described in situation one, situation two and situation three (b) at the same time, no matter whether it has downlink data to the user who has uplink data transmission, all send its CQI information in the second shared resource pool; Those users who have no uplink data but have downlink data send their CQI information in the first shared resource pool; the uplink control channels of other users adopt the processing method of the prior art.

Or use the method described in case one, case two, case three (a) and case four at the same time, for users who have downlink data to send, no matter whether they have uplink data or not, their CQI information will be stored in the first shared resource pool Send; for those users who have no downlink data to send but have uplink data to send, send their CQI information in the second shared resource pool; for those users who have neither downlink data nor uplink data, send their CQI information in the third shared resource pool Send in the shared resource pool; the uplink control channels of other users adopt the processing method of the prior art.

Or use the methods described in case 1, case 2, case 3 (b) and case 4 at the same time, for users who have uplink data to send, no matter whether they have downlink data or not, their CQI information will be stored in the second shared resource pool Send; for those users who have no uplink data but have downlink data to send, send their CQI information in the first shared resource pool; for those users who have neither downlink data nor uplink data, send their CQI information in the third Send in the shared resource pool; the uplink control channels of other users adopt the processing method of the prior art.

Cases 1 and 2; cases 1 and 3(b); cases 2 and 3(a); cases 1, 2 and 4; cases 1, 3(a) and 4; cases 2. Situation 3 (b) and Situation 4; Situation 1, Situation 3 (b) and Situation 4; Situation 2, Situation 3 (a) and Situation 4, etc., will not be listed one by one here.

As mentioned above, the CQI feedback period is one or several TTIs, and the CQI feedback period can be slowly changed under the control of the base station. For those TTIs with CQI feedback information, the base station can use the above scheme to allocate CQI channel resources for users; for those TTIs without CQI feedback information, the base station does not need to allocate CQI channel resources for users. It should be noted that, for each user participating in scheduling in the system, regardless of whether it has uplink/downlink data information, it needs to periodically feed back its CQI information to the base station, so as to obtain the opportunity to be scheduled by the base station.

The implementation scheme of the above CQI channel is shown in Figure 3, in which two uplink TTIs are drawn, and it is assumed that the ACK channel of all users adopts the transmission mode corresponding to the downlink shared control channel. In the picture:

CQI-1 represents the CQI information transmitted in the first shared resource pool. When the user only has downlink data to send, the CQI channel is transmitted corresponding to the downlink data channel;

CQI-2 indicates the CQI information transmitted in the second shared resource pool. When the user only has uplink data to send, the CQI channel and the uplink data channel are multiplexed to transmit the CQI information;

When the user sends both downlink data and uplink data, the CQI information can be transmitted in the first shared resource pool or in the second shared resource pool; that is, the CQI information can be transmitted in the form of CQI-1 It can also be transmitted in CQI-2 mode. One of the modes can be selected according to the actual system requirements, and the two modes can also be used alternately.

CQI-3 indicates the CQI information transmitted in the third shared resource pool. When the user has neither uplink data nor downlink data to send, the shared time-frequency resource is allocated for the CQI channel to transmit the CQI information.

The TTI on the left of FIG. 3 represents a TTI without CQI information feedback, and there is no need to allocate uplink control channel resources in this TTI. In this TTI, the uplink data information of user 1, user 2, and user 3 are simultaneously transmitted by means of frequency division multiplexing.

The TTI on the right side of FIG. 3 represents a TTI with CQI information feedback, and the above-mentioned method of the present invention is used to transmit uplink control channel signaling in this TTI. In this TTI, the uplink data information of user 1 and user 4 is simultaneously transmitted by means of frequency division multiplexing, and user 2 and user 3 have no uplink data information in this TTI; at the same time, it is assumed that user 2 has downlink data to send in the downlink TTI ; while user 3 neither sends uplink data nor downlink data. Since the CQI information needs to be transmitted in this TTI, according to the above-mentioned method provided by the present invention, user 1 and user 4 have uplink data to send, therefore, their CQI channel and their uplink data channel can be multiplexed in a time-division, frequency-division or code-division manner. Used together for transmission (that is, the CQI information is transmitted in the CQI-2 manner). For user 2 and user 3, since they have no uplink data to send, CQI information cannot be transmitted in the CQI-2 manner. For user 2, since there is downlink data information, its CQI channel and downlink data channel can be transmitted correspondingly (that is, CQI information is transmitted in the form of CQI-1). Here is a special case, namely: CQI channel and uplink ACK Channel multiplexing transmits CQI information. For user 3, only shared time-frequency resources can be allocated to transmit CQI information for its CQI channel (that is, CQI information can be transmitted in a CQI-3 manner).

The above is described by taking the CQI channel as an example. In fact, the uplink control channel includes not only the CQI channel, but also many channels such as the uplink ACK channel. The first, second and third shared resource pools defined above for the CQI channel, as well as the four transmission situations and their various combinations, are also applicable to various other uplink control channels, but need to be based on the specific characteristics of each uplink control channel , optionally used.

For example, the above-mentioned uplink ACK channel transmitted corresponding to the downlink shared control channel occupies the first shared resource pool. Note that the response information of the downlink data channel is transmitted on the uplink ACK channel, so as long as the user with the uplink ACK channel must send downlink data in the previous TTI, the multiplexing scheme for the ACK channel only exists in case 1 and case 3 .

Case 1: For those users who have downlink data to send but no uplink data to send, their uplink ACK channel is transmitted in the first shared resource pool, and the resource allocation of the uplink ACK channel corresponds to the resource allocation of the user's downlink shared control channel , which can save the transmission of the user ID, but still needs to transmit the pilot separately. This is the multiplexing scheme of the uplink ACK channel mentioned at the beginning of this article.

Case 3: For those users who send both downlink data and uplink data, their uplink ACK channel can be transmitted in the first shared resource pool or in the second shared resource pool; that is, the uplink ACK channel can be transmitted in both It can be transmitted correspondingly with the downlink data channel, and can also be multiplexed with its uplink data channel for transmission.

It should be noted that, for different types of uplink control channels, such as CQI channel and uplink ACK channel, they can be transmitted in the same resource pool or in different resource pools. If they are sent in the same resource pool, the CQI channel and the uplink ACK channel can be multiplexed and sent together and share the pilot, or both can be sent separately and each pilot sent separately. Cases 1 and 3 are described as follows:

For users with only downlink data, their CQI channel and uplink ACK channel can only be sent in the first shared resource pool, and the two can be multiplexed together to send and share pilots, or can be sent separately and each pilot is sent separately.

For users who have both downlink data and uplink data, their CQI channel and uplink ACK channel can be sent in the first shared resource pool, and the two can be multiplexed together or sent separately; or their CQI channel and uplink ACK channel can be sent together Both ACK channels are sent in the second shared resource pool, and the two are multiplexed and sent together or sent separately; the CQI channel can also be sent in the first shared resource pool, while the uplink ACK channel is sent in the second shared resource pool ; It is also possible to send the CQI channel in the second shared resource pool, and send the uplink ACK channel in the first shared resource pool.

Similarly, the above method can also be used for the downlink control channel, for example:

For a user who has uplink data to send, the downlink control channel is sent in a shared resource pool, and the resource allocation of the downlink control channel corresponds to the resource allocation of the user's uplink shared control channel;

For users who have downlink data to send, multiplex the downlink control channel and downlink data channel;

For users who do not send uplink data and downlink data, separate shared resources are allocated to their downlink control channels.

The base station will deliver downlink control information to all users, and the sending period of the control information is controllable by the base station. In the TTI where the downlink control information is sent, the design scheme of the downlink control channel is as follows:

For those users who have downlink data to send, their downlink control channel and their downlink data channel can be multiplexed and sent together by time division, frequency division or code division. The downlink control channel and the downlink data channel share pilot resources. The downlink data channel and the multiplexing mode adopted can be obtained from the downlink control signaling.

For those users who have uplink data to send, the downlink control channel is sent in a shared resource pool, and the resource allocation of the downlink control channel corresponds to the resource allocation of the user's uplink shared control channel; since the users who send data have their own corresponding At this time, the downlink control channel of these users can be multiplexed with their downlink ACK channel by time division multiplexing, frequency division multiplexing or code division multiplexing, and the pilot frequency of the downlink ACK channel can be shared.

For those users who have neither downlink data nor uplink data to send, their downlink control channel information can neither be sent with the downlink data nor the corresponding uplink data channel. At this time, only a section can only be reserved for the downlink control channel of these users. time-frequency resources.

In the above situation, when the user has both downlink data and uplink data to send, the downlink control channel and uplink data channel can be sent correspondingly; or the downlink control channel and downlink data channel can be multiplexed together.

To sum up, for the uplink control channel: For users who have downlink data to send, the uplink control channel and the downlink data channel are sent correspondingly, which saves the transmission of user identification information and achieves the purpose of saving signaling; and shares the pilot , to achieve the purpose of saving pilot resources. For users who have uplink data to send, the uplink control channel is sent together with the uplink data channel, and the pilot frequency is shared to save the signaling overhead and pilot frequency overhead of user identification information.

For the downlink control channel: For users who have downlink data to send, the downlink control channel is multiplexed on the downlink data channel, and the pilot resources are shared with the downlink data channel; The uplink data channel is correspondingly sent, which saves the transmission of user identification information and achieves the purpose of saving signaling amount.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims (14)

1, a kind of ascending control channel implementation method is characterized in that comprising: for ascending control channel distributes the first shared resource pond, the second shared resource pond and the 3rd shared resource pond;

A, user to there being downlink data to send, its ascending control channel uses the described first shared resource pond to send, and the resource allocation of each user's ascending control channel is corresponding with the resource allocation situation of this user's descending shared control signal channel;

B, user to there being upstream data to send, its ascending control channel uses the described second shared resource pond to send, and its ascending control channel and user's uplink data channels is multiplexing;

C, for the user who does not have upstream data and downlink data to send, its ascending control channel uses described the 3rd shared resource pond to send, and carries user totem information.

2, the method for claim 1, it is characterized in that, the user that the downlink data transmission is arranged again for existing upstream data, its ascending control channel uses the described first shared resource pond to send, and the resource allocation of each user's ascending control channel is corresponding with the resource allocation situation of this user's descending shared control signal channel.

3, the method for claim 1, it is characterized in that, for the user that existing upstream data has downlink data to send again, its ascending control channel uses the described second shared resource pond to send, and each user's ascending control channel and user's uplink data channels are multiplexing.

4, the method for claim 1 is characterized in that, described ascending control channel and user's uplink data channels adopts time division multiplexing, frequency division multiplexing or code division multiplexing, the pilot tone of shared described uplink data channels.

5, the method for claim 1 is characterized in that, the resource in the described first shared resource pond, the second shared resource pond and the 3rd shared resource pond is mutually orthogonal.

6, the method for claim 1 is characterized in that, described ascending control channel is link-quality indication CQI channel and/or ack channel.

7, method as claimed in claim 6 is characterized in that, described CQI channel and ack channel adopt time division multiplexing, frequency division multiplexing or code division multiplexing, common pilot.

8, method as claimed in claim 6 is characterized in that, described A or/and the implementation method among the B in the transmission cycle TTI that CQI information and/or ACK feedback information are arranged, carry out.

9, a kind of down control channel implementation method is characterized in that comprising: for down control channel distributes the first shared resource pond or/and the second shared resource pond;

To the user who has upstream data to send, its down control channel uses the described first shared resource pond to send, and the resource allocation of each user's down control channel is corresponding with the resource allocation situation of this user's up shared control channel; Or/and

To the user who has downlink data to send, its down control channel uses the described second shared resource pond to send, and down control channel and downstream data channel is multiplexing.

10, method as claimed in claim 9 is characterized in that, is down control channel the 3rd shared resource pond of reallocating;

For the user who does not have upstream data and downlink data to send, its down control channel uses described the 3rd shared resource pond to send, and carries user totem information.

11, method as claimed in claim 9, it is characterized in that, the user that the downlink data transmission is arranged again for existing upstream data, use the described first shared resource pond to send down control channel, the resource allocation of each user's down control channel is corresponding with the resource allocation situation of this user's up shared control channel.

12, method as claimed in claim 9, it is characterized in that, user for existing upstream data has downlink data to send again uses the described second shared resource pond to send down control channel, and each user's down control channel and user's downstream data channel are multiplexing.

13, method as claimed in claim 9 is characterized in that, described down control channel and downstream data channel adopt time division multiplexing, frequency division multiplexing or code division multiplexing, the pilot tone of shared described downstream data channel.

14, method as claimed in claim 10 is characterized in that, the resource in the described first shared resource pond, the second shared resource pond and the 3rd shared resource pond is mutually orthogonal.

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