WO2009129754A1

WO2009129754A1 - Method and device for channel quality detection

Info

Publication number: WO2009129754A1
Application number: PCT/CN2009/071466
Authority: WO
Inventors: 王立波; 索士强
Original assignee: 大唐移动通信设备有限公司
Priority date: 2008-04-25
Filing date: 2009-04-24
Publication date: 2009-10-29
Also published as: CN101568184B; CN101568184A

Abstract

A method and device for channel quality detection. A channel quality detection pilot is allocated at the symmetrical position of both ends of system frequency band in the uplink pilot time slot, the summation of the frequency band occupied by the channel quality detection pilot allocated in the uplink pilot time slot and the frequency band occupied by the channel quality detection channel allocated in the uplink sub-frames covers the frequency band width of whole system; and a random access channel is allocated in the rest frequency band of the uplink pilot time slot. The method and device can guarantee that channel quality detection of whole system may be implemented when a random access channel is allocated in the uplink pilot time slot.

Description

Channel quality detecting method and device

Technical field

The present invention relates to the field of communications technologies, and in particular, to a channel quality detecting method and apparatus. Background of the invention

In the Long Term Evolution (LTE) system, there are two frame structures, which are respectively applicable to a frequency division duplex (FDD) system and a time division duplex (TDD) system. FIG. 1 is a schematic diagram of a frame structure suitable for a TDD system. As shown in FIG. 1 , in the frame structure, the entire frame is called a radio frame, and the length is 10 ms, including two 5 ms half frames, and each half frame includes 5 subframes, and each subframe has a length of 1 ms. The second subframe in each field, that is, the #1 and #6 subframes are special subframes, including three special time slots, respectively, which are downlink pilot time slots.

(DwPTS), guard interval (GP) and uplink pilot time slot (UpPTS). Each of the other sub-frames includes two slots of length 0.5 ms, wherein the #0 and #5 subframes are downlink subframes, and the downlink pilot slots are used for transmitting downlink data; the remaining subframes are uplink subframes. The frame, along with the uplink pilot time slot, is used to transmit uplink data.

At present, in the TDD system, channel quality detection of uplink data on the terminal side to the terminal side

(sounding) is implemented according to the channel quality sounding pilot transmitted by the terminal side; the terminal side transmits the channel quality sounding pilot at the position of the channel quality sounding pilot allocated by the network side, and the network side receives the channel quality detecting pilot. When the channel quality sounding pilot is detected, the channel quality at the location can be detected. The frequency range covered by the channel quality sounding pilot is the frequency range in which the channel quality can be detected.

2 is a schematic diagram of channel allocation of a conventional channel quality detecting method. As shown in FIG. 2, an uplink control channel is allocated in subframes 2, 3, and 4, and is located at a symmetric position at both ends of the system band, and in each subframe, uplink. The bandwidth occupied by the control channel may be the same or different. The case where the widths are different is shown in FIG.

The random access channel may be allocated at any position of the uplink pilot time slot, or allocated in the intermediate part of the uplink subframe except the uplink control channel, and one or more random access channels may exist, in FIG. 2, one The random access channel is allocated in subframe 2, and the other random access channel is allocated in the upper half of the uplink pilot slot.

The channel quality sounding pilot may be allocated at any position of the uplink pilot time slot, or other positions in the uplink subframe except the uplink control channel and the random access channel. In FIG. 2, a part of the channel quality sounding pilot is allocated. In subframe 2, another portion is allocated in subframe 4, occupying the same frequency band range as the uplink shared data channel in the subframe, but separated in the time domain.

When the uplink pilot time slot does not allocate a random access channel, the quality sounding pilot can be arbitrarily allocated in the uplink pilot time slot, so that the quality sounding guides allocated in the uplink pilot time slot and the subframe can always be made. The frequency can cover all system bands to achieve channel quality detection of the complete system band. However, if a random access channel is allocated in the uplink pilot time slot, for example, in the channel allocation shown in FIG. 2, the frequency band occupied by the random access channel allocated in the uplink pilot time slot is occupied by the uplink control channel. The frequency band range overlaps. Then, no matter how the quality sounding pilot is allocated, the frequency band occupied by the quality sounding pilot cannot cover the entire system frequency band, that is, the channel quality in some frequency bands will not be detected. As a result, operations related to the quality of the channel in this part of the band are not possible.

In summary, in the current channel quality detection method, if a random access channel is allocated in an uplink pilot time slot, channel quality detection of a complete system band may not be achieved. Summary of the invention

The object of the present invention is to provide a channel quality detecting method, which can ensure channel quality detection of a complete system band when a random access channel is allocated in an uplink pilot time slot. Another object of the present invention is to provide a channel quality detecting apparatus capable of ensuring channel quality detection of a complete system band when a random access channel is allocated in an uplink pilot time slot.

To achieve the above objective, the technical solution of the present invention is specifically implemented as follows: A channel quality detecting method, where the network side allocates a channel quality sounding pilot, a random access channel, an uplink control channel, and an uplink shared data channel, And allocating a random access channel in the uplink pilot time slot;

The network side notifies the terminal side of the allocated channel quality sounding pilot, the random access channel, the uplink control channel, and the location information of the uplink shared data channel, and performs the channel quality detection pilot position on the terminal side according to the location information. The transmitted channel quality sounding pilot is detected;

The channel quality sounding pilot and the random access channel allocated by the network side include: allocating a channel quality sounding pilot at a symmetric position at both ends of the system frequency band in the uplink pilot time slot, and allocating the uplink pilot time slot The sum of the bandwidth occupied by the channel quality sounding pilot and the bandwidth occupied by the channel quality sounding pilot allocated in the uplink subframe covers the entire system bandwidth;

A random access channel is allocated in the remaining frequency bands of the uplink pilot time slot.

Preferably, the bandwidth of the channel quality sounding pilot allocated in the uplink pilot time slot is greater than or equal to the bandwidth of the uplink control channel with the smallest bandwidth, and is less than or equal to the uplink control channel with the largest bandwidth. Bandwidth.

Preferably, the allocating a random access channel in the remaining frequency bands of the uplink pilot time slot includes:

A random access channel is allocated in the remaining frequency bands of the uplink pilot time slot, and the random access channel is not allocated in the uplink subframe.

Preferably, the symmetric position allocation at both ends of the system band in the uplink pilot time slot Channel quality sounding pilots, comprising: allocating channel quality sounding pilots at symmetric locations at both ends of the system band in the same uplink pilot time slot; or allocating in two different uplink pilot time slots in the same radio frame Channel quality sounding pilot.

Preferably, the allocating channel quality sounding pilots in two different uplink pilot time slots in the same radio frame comprises: allocating channel quality sounding pilots at a high frequency end position of an uplink pilot time slot, The channel quality sounding pilot is allocated at another low frequency end position where the uplink pilot time slot is symmetric with the high frequency end.

Preferably, when a radio frame includes only one uplink pilot time slot, the allocating channel quality sounding pilots in two different uplink pilot time slots in two adjacent radio frames includes: The high frequency end positions of the uplink pilot time slots of the radio frames are allocated channel quality sounding pilots, and the channel quality sounding pilots are allocated at the low frequency end positions of the uplink pilot time slots of the other radio frame and the high frequency end symmetric.

Preferably, the random access channel allocated in the remaining frequency bands of the uplink pilot time slot is at least one.

Preferably, the random access channel allocated in the remaining frequency bands of the uplink pilot time slot is greater than one, and the plurality of random access channels are continuously distributed without intervals, or between multiple random access channels. Dispersed distribution with intervals.

Preferably, when the plurality of random access channels are spaced apart, the channel quality sounding pilot is allocated in the interval portion.

Preferably, the plurality of random access channels are two, and the interval between the two random access channels allocates channel quality sounding pilots.

A channel quality detecting apparatus includes a quality sounding pilot allocation module, a random access channel allocation module, a channel position information notification module, and a channel quality detecting module;

The channel location information notification module is configured to notify the terminal side of the location information of the allocated channel quality sounding pilot, the random access channel, the uplink control channel, and the uplink shared data channel; The channel quality detecting module is configured to detect, according to the location information, a channel quality sounding pilot transmitted by the terminal side at a channel quality sounding pilot position;

The channel quality sounding pilot allocation module is configured to allocate a channel quality sounding pilot in a symmetric position at both ends of the system frequency band in the uplink pilot time slot, so that the channel quality sounding pilot station allocated in the uplink pilot time slot The sum of the occupied bandwidth and the bandwidth occupied by the channel quality sounding pilot allocated in the uplink subframe covers the entire system bandwidth;

The random access channel allocation module is configured to allocate a random access channel in the remaining frequency bands of the uplink pilot time slot.

Preferably, the channel quality probe pilot allocated by the channel quality sounding probe allocation module occupies a bandwidth greater than or equal to a bandwidth of an uplink control channel with a minimum bandwidth, and an uplink control with a bandwidth that is less than or equal to a maximum bandwidth. The bandwidth of the channel.

Preferably, the random access channel allocation module does not allocate a random access channel in an uplink subframe.

Preferably, the channel quality sounding pilot allocation module allocates channel quality sounding pilots at symmetric positions at both ends of the system frequency band in the uplink pilot time slot, including: in the same uplink pilot time slot, in the system frequency band two The symmetric position of the end allocates channel quality sounding pilots; or allocates channel quality sounding pilots in two different uplink pilot time slots in the same radio frame.

Preferably, the channel quality sounding pilot allocation module allocates channel quality sounding pilots in two different uplink pilot time slots in the same radio frame, including: at a high frequency end of an uplink pilot time slot The location allocates a channel quality sounding pilot, and the channel quality sounding pilot is allocated at another low frequency end position where the uplink pilot time slot is symmetric with the high frequency end.

Preferably, when a radio frame includes only one uplink pilot time slot, the allocating channel quality sounding pilots in two different uplink pilot time slots in two adjacent radio frames includes: High-frequency end position allocation channel quality detection guide for uplink pilot time slots of radio frames Frequency, the channel quality sounding pilot is allocated in the uplink pilot time slot of another radio frame and the low frequency end position symmetric of the high frequency end.

Preferably, the random access channel allocation module allocates at least one random access channel in the remaining frequency bands of the uplink pilot time slot.

Preferably, the random access channel allocation module allocates multiple random access channels in the remaining frequency bands of the uplink pilot time slot, and the plurality of random access channels are continuously distributed without intervals, or The dispersion of the intervals.

Preferably, when the plurality of random access channels allocated by the random access channel allocation module are spaced apart, the channel quality sounding pilot allocation module is further configured to allocate channels in the interval. Quality detection pilot.

Preferably, the random access channel allocation module allocates two random access channels, and the channel quality sounding pilot allocation module is configured to allocate channels in the interval between the two random access channels. Quality detection pilot.

It can be seen from the above technical solution that the channel quality sounding pilot is allocated in a symmetric position at both ends of the system frequency band in the uplink pilot time slot, so that the channel quality sounding pilot channel allocated in the uplink pilot time slot is used. The sum of the occupied frequency bandwidth and the bandwidth occupied by the channel quality sounding pilot allocated in the uplink subframe covers the entire system bandwidth; and the channel quality detecting method for allocating the random access channel in the remaining frequency bands of the uplink pilot time slot And the device can ensure that the channel quality detection of the complete system frequency band can always be realized when the random access channel is allocated in the uplink pilot time slot. BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a schematic diagram of a frame structure suitable for a TDD system;

2 is a schematic diagram of channel allocation of an existing channel quality detecting method;

3 is a flowchart of a channel quality detecting method according to an embodiment of the present invention; 4 is a schematic diagram of channel allocation of a channel quality detecting method according to Embodiment 1 of the present invention; FIG. 5 is a schematic diagram of channel allocation of a channel quality detecting method according to Embodiment 2 of the present invention; FIG. 6 is a schematic diagram of channel quality detecting method according to Embodiment 3 of the present invention; Schematic diagram of channel allocation; FIG. 7 is a structural diagram of a channel quality detecting apparatus according to an embodiment of the present invention. Mode for carrying out the invention

The present invention will be further described in detail below with reference to the accompanying drawings.

In the embodiment of the present invention, in the process of channel quality detection in the time division duplex system, the channel allocation link is improved, and the uplink pilot channel must be allocated in the uplink pilot time slot, and the uplink pilot channel is used. A channel quality sounding pilot is allocated in a symmetric position at both ends of the system band, so that the bandwidth occupied by the channel quality sounding pilot allocated in the uplink pilot time slot is occupied by the quality sounding pilot allocated in the uplink subframe The sum of the bandwidths covers the entire system bandwidth; and the random access channel is allocated in the remaining bands of the uplink pilot slots. The bandwidth covered by the channel quality sounding pilot covers the entire system frequency band, thereby ensuring that channel quality detection of the complete system frequency band is always achieved.

FIG. 3 is a flowchart of a channel quality detecting method according to an embodiment of the present invention. As shown in FIG. 4, the process includes the following steps:

Step 301: The network side, such as a base station, allocates a location of a channel quality sounding pilot, a random access channel, an uplink control channel, and an uplink shared data channel. The symmetricity of the two ends of the system band in the uplink pilot time slot. Locating a channel quality sounding pilot, the sum of the frequency bandwidth occupied by the channel quality sounding pilot allocated in the uplink pilot time slot and the frequency bandwidth occupied by the channel quality sounding pilot allocated in the uplink subframe covers the entire The system bandwidth is allocated and a random access channel is allocated in the remaining frequency bands of the uplink pilot time slot.

Step 302: The network side allocates a channel quality sounding pilot, a random access channel, and The location information of the uplink control channel and the uplink shared data channel is notified to the terminal side.

Step 303: The network side detects, according to the location information, a channel quality sounding pilot transmitted by the terminal side, such as a user set UE or a mobile station (MS), at a channel quality sounding pilot position.

The specific implementation methods of step 302 and step 303 can refer to existing mature technologies, and are not the problems to be discussed in the present invention. Details are not described herein. The specific embodiment of channel allocation in step 301 will be described below.

Embodiment 1

4 is a schematic diagram of channel allocation of a channel quality detecting method according to Embodiment 1 of the present invention. As shown in FIG. 4, an uplink control channel is allocated in subframes 2, 3, and 4, and is located at a symmetric position at both ends of the system band, and is in each In the subframes, the bandwidth occupied by the uplink control channel is different.

The channel quality sounding pilot is allocated in the uplink subframe and the uplink pilot time slot, wherein a part of the channel quality sounding pilot is allocated in the subframe 4, and the other part is allocated in the uplink pilot frequency slot at the two ends of the system frequency band. The location, and the sum of the bandwidth occupied by the channel quality sounding pilots allocated in the uplink pilot time slots and the frequency bandwidth occupied by the channel quality sounding pilots allocated in the subframe 4 covers the entire system frequency bandwidth.

The bandwidth of the channel quality sounding pilot allocated in the uplink pilot time slot in FIG. 4 is the same as the frequency bandwidth occupied by the uplink control channel allocated in the subframe 2, because the channel quality sounding pilot channel allocated in the subframe 4 is The occupied bandwidth is the system bandwidth minus the bandwidth occupied by the uplink control channel allocated in the subframe, and the bandwidth allocated by the uplink control channel allocated in the subframe 4 is the smallest among the three subframes, so the uplink is The bandwidth occupied by the channel quality sounding pilots allocated in the pilot time slots can be guaranteed to cover the entire system frequency band as long as the frequency bandwidth occupied by the uplink control channels in the subframe 4 is the same or wider.

Certainly, the preferred method may be that the frequency bandwidth occupied by the channel quality sounding pilot allocated in the uplink pilot time slot is greater than or equal to the uplink control channel with the smallest occupied frequency bandwidth. The bandwidth is less than or equal to the bandwidth of the uplink control channel having the largest bandwidth. The more compact method is to make the bandwidth occupied by the channel quality sounding pilot allocated in the uplink pilot time slot equal to the bandwidth of the uplink control channel with the largest bandwidth.

The random access channel may be allocated in the uplink pilot time slot except for the channel quality sounding pilot, i.e., the middle portion of the uplink pilot time slot in FIG. The random access channel may be arbitrarily allocated in this part of the frequency band, and the random access channel may not be allocated in the subframe, which has the advantage of reducing the position of the random access channel in the uplink control channel in the subframe. Signaling overhead. Of course, it is also possible to simultaneously allocate a random access channel in a subframe.

The uplink shared data channel is allocated in the frequency bands other than the above-mentioned uplink control channel, channel quality sounding pilot, and random access channel in subframes 2, 3, and 4.

In fact, in the first embodiment, when a random access channel is allocated in an uplink pilot time slot, a plurality of random access channels may be allocated, and the random access channels may be continuously distributed without intervals, or may be spaced. Dispersed distribution.

Embodiment 2

FIG. 5 is a schematic diagram of channel allocation of a channel quality detecting method according to Embodiment 2 of the present invention. As shown in FIG. 5, the difference between this embodiment and the first embodiment is that two random access channels are allocated in an uplink pilot time slot. And a certain frequency band in the middle, that is, a distributed distribution of intervals, which may not be allocated as a reserved frequency band. Of course, if necessary, this part of the frequency band may also be allocated to the channel quality sounding pilot. The case of more random access channels and so on, will not be described in detail here.

Embodiment 3

FIG. 6 is a schematic diagram of channel allocation of a channel quality detecting method according to Embodiment 3 of the present invention. As shown in FIG. 6, the difference between this embodiment and the first embodiment is that three random access channels are allocated in an uplink pilot time slot. There is no interval in the middle, that is, a continuous distribution without intervals. Two random connections The case of entering a channel or more random access channels, and so on, will not be described in detail here.

The above embodiments are all based on the frame structure of the existing LTE system in FIG. Certainly, the allocation ratio and the specific number of the uplink and downlink subframes in the subframe may be changed according to specific system requirements. For example, subframes 0 and 1 in FIG. 1 are downlink subframes, subframe 2 is a special subframe, and subframe 3 is If the uplink subframe is 4, the channel allocated in the subframe 3 in the embodiment may be canceled, and the channel allocation method in the other subframes may be the same as in the foregoing embodiment. . For the case of other subframe structures, the allocation method of each channel is similar, and here is not - for example.

In addition, the existing radio frame length is 10 ms, and a complete radio frame includes two fields. The frame structures of the two fields may be the same or different, and the allocation of each channel in each field may be the same. Differently, if the frame structure of the two fields is different, the channel quality sounding pilot can be allocated within the length of the two radio frames, so the present invention does not limit the specific frame structure, as long as the symmetry is at both ends of the system band in the UpPTS. The location allocation channel quality detection pilot can be.

Since there are many possible cases of the specific frame structure of the radio frame, it is impossible to exemplify a specific embodiment in which the idea of the present invention is applied in different frame structures, and only one example is given below.

Embodiment 4

The channel quality sounding pilots are allocated in the same UpPTS according to the method in the above embodiment, and can also be allocated in two fields, that is, the channel quality sounding pilots are respectively allocated in the two UpPTSs. If the frame structure of two fields in a radio frame is the same, it can be allocated in two fields in the same radio frame. If the frame structure of two fields in one radio frame is different, it can be respectively in two Assigned in the UpPTS of two symmetric locations in the radio frame. At this time, similar to the allocation of channel quality sounding pilots in an UpPTS, the channel quality sounding pilots are also allocated symmetric positions at both ends of the system band in the UpPTS, but the two symmetric positions are respectively allocated in two UpPTSs, for example, One of the high-frequency end points of the UpPTS The channel quality sounding pilot is allocated, and the channel quality sounding pilot is allocated in the other UpPTS with the low frequency end position symmetric with the high frequency end. The two UpPTSs may be in the same radio frame or in the two radio frames, and the other channels are allocated in the same manner as the other embodiments described above, and are not described again.

FIG. 7 is a structural diagram of a channel quality detecting apparatus according to an embodiment of the present invention. As shown in FIG. 7, the apparatus is disposed on a network side, and includes: a channel quality sounding pilot allocation module 701, a random access channel allocating module 702, and a channel position. The information notification module 703 and the channel quality detecting module 704.

The channel quality sounding pilot allocation module 701 is configured to allocate a channel quality sounding pilot at a symmetric position at both ends of the system frequency band in the uplink pilot time slot, so that the channel quality sounding pilot channel allocated in the uplink pilot time slot is used. The sum of the occupied bandwidth and the bandwidth occupied by the quality sounding pilots allocated in the uplink subframe covers the entire system bandwidth.

The random access channel allocation module 702 is configured to allocate a random access channel in the remaining frequency bands of the uplink pilot time slot.

The channel location information notification module 703 is configured to notify the terminal side of the location information of the allocated channel quality sounding pilot, the random access channel, the uplink control channel, and the uplink shared data channel.

The channel quality detecting module 704 is configured to detect, according to the channel quality detecting pilot allocation module 701, the location information of the allocated channel quality sounding pilot, the channel quality sounding pilot transmitted by the terminal side at the channel quality sounding pilot position. .

Preferably, when the quality sounding pilot allocation module 701 allocates the quality sounding pilot, the frequency bandwidth occupied by the channel quality sounding pilot allocated in the uplink pilot time slot and the quality sounding indicator allocated in the uplink subframe are The sum of the frequency bandwidth occupied by the frequency covers the entire system bandwidth, and the channel quality probe pilot allocated in the uplink pilot time slot must occupy a bandwidth greater than or equal to the occupied uplink control channel with the smallest bandwidth. Frequency band The width, which is less than or equal to the bandwidth of the uplink control channel with the largest bandwidth. Preferably, the random access channel allocation module 702 does not allocate a random access channel in the uplink subframe.

Preferably, the channel quality sounding pilot allocation module 701 allocates channel quality sounding pilots in symmetric positions at both ends of the system frequency band in the uplink pilot time slot, including: being in the system band in the same uplink pilot time slot. Channel quality sounding pilots are allocated at symmetric locations at both ends; or channel quality sounding pilots are allocated in two different uplink pilot time slots in the same radio frame.

Preferably, the channel quality sounding pilot allocation module 701 allocates channel quality sounding pilots in two different uplink pilot time slots in the same radio frame, including: a high frequency in an uplink pilot time slot. The end position allocates a channel quality sounding pilot, and the channel quality sounding pilot is allocated at another low frequency end position where the uplink pilot time slot and the high frequency end are symmetric.

Preferably, the random access channel allocation module 702 allocates at least one random access channel in the remaining frequency bands of the uplink pilot time slot.

Preferably, when the random access channel allocation module 702 allocates multiple random access channels in the remaining frequency bands of the uplink pilot time slot, the multiple random access channels may be continuously distributed without intervals, or multiple random numbers. The access channels are spaced apart and distributed. In addition, the quality sounding pilot allocation module 701 can also allocate channel quality sounding pilots in these spaced portions when distributed in spaced intervals.

Preferably, the random access channel allocation module 702 allocates two random access channels, and the channel quality sounding pilot allocation module 701 is configured to allocate channels in the interval between the two random access channels. Quality detection pilot.

The specific functions and operations implemented by the modules in the above devices can be referred to the method embodiments, and will not be described again here.

As can be seen from the above embodiments, the present invention is in the system frequency of the uplink pilot time slot. The channel quality sounding pilot is allocated with symmetric positions at both ends, such that the bandwidth occupied by the channel quality sounding pilot allocated in the uplink pilot time slot and the frequency bandwidth occupied by the channel quality sounding pilot allocated in the uplink subframe The sum total coverage of the entire system bandwidth; and the channel quality detection method and apparatus for allocating the random access channel in the remaining frequency bands of the uplink pilot time slot, can ensure that when the random access channel is allocated in the uplink pilot time slot, the complete Channel quality detection in the system band can always be implemented; and, the random access channel is allocated in the uplink pilot time slot, and the random access channel is not allocated in the subframe, and the uplink control channel can be saved to indicate the random access channel. The signaling overhead of the location.

It is to be understood that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the scope of the invention, any modifications, equivalents, Improvements and the like should be included in the scope of the present invention.

Claims

Claim

A channel quality detecting method, where the network side allocates a channel quality sounding pilot, a random access channel, an uplink control channel, and an uplink shared data channel, and allocates a random access channel in an uplink pilot time slot. ;

The channel quality sounding pilot and the random access channel allocated by the network side include:

Allocating a channel quality sounding pilot at a symmetric position at both ends of the system frequency band in the uplink pilot time slot, such that a bandwidth occupied by the channel quality sounding pilot allocated in the uplink pilot time slot and a channel allocated in the uplink subframe The sum of the bandwidths occupied by the quality sounding pilots covers the entire system bandwidth;

The channel quality detecting method according to claim 1, wherein a bandwidth of a channel quality sounding pilot allocated in the uplink pilot time slot is greater than or equal to an uplink control channel with a minimum bandwidth The bandwidth is less than or equal to the bandwidth of the uplink control channel having the largest bandwidth.

The method for detecting a channel quality according to claim 1, wherein the allocating a random access channel in the remaining frequency bands of the uplink pilot time slot comprises:

The channel quality detecting method according to claim 1, wherein said Allocating channel quality sounding pilots at symmetric locations in the pilot frequency slots at both ends of the system band, including: allocating channel quality sounding pilots at symmetric locations at both ends of the system band in the same uplink pilot time slot; or in the same wireless Channel quality sounding pilots are allocated in two different uplink pilot time slots in the frame.

The channel quality sounding method according to claim 4, wherein the allocating channel quality sounding pilots in two different uplink pilot time slots in the same radio frame comprises: The high frequency end position of the time slot allocates a channel quality sounding pilot, and the channel quality sounding pilot is allocated at another low frequency end position where the uplink pilot time slot and the high frequency end are symmetric.

The channel quality detecting method according to any one of claims 1 to 5, wherein the random access channel allocated in the remaining frequency bands of the uplink pilot time slot is at least one.

The channel quality detecting method according to claim 6, wherein the random access channel allocated in the remaining frequency bands of the uplink pilot time slot is greater than one, and the plurality of random access channels are absent. A continuous distribution of intervals, or a distributed distribution of intervals between a plurality of random access channels.

The channel quality detecting method according to claim 7, wherein when the plurality of random access channels are distributed in a spaced relationship, the channel quality detecting pilot is allocated in the interval portion.

The channel quality detecting method according to claim 8, wherein the plurality of random access channels are two, and a spacing portion between two random access channels allocates channel quality sounding pilots.

10. A channel quality detecting apparatus, comprising a quality sounding pilot allocation module, a random access channel allocation module, a channel position information notification module, and a channel quality detecting module;

It is characterized by:

The channel quality detecting apparatus according to claim 10, wherein the channel quality sounding probe allocated by the channel quality sounding pilot allocation module occupies a frequency bandwidth greater than or equal to an uplink control channel with a minimum bandwidth The bandwidth of the bandwidth is less than or equal to the bandwidth of the uplink control channel with the largest bandwidth.

The channel quality detecting apparatus according to claim 10, wherein the random access channel allocation module does not allocate a random access channel in an uplink subframe.

The channel quality detecting apparatus according to claim 10, wherein the channel quality sounding pilot allocation module allocates channel quality sounding pilots at symmetric positions at both ends of the system frequency band in the uplink pilot time slot, including : allocating channel quality sounding pilots at symmetric locations at both ends of the system band in the same uplink pilot time slot; or allocating channel quality sounding pilots in two different uplink pilot time slots in the same radio frame.

The channel quality detecting apparatus according to claim 13, wherein the channel quality sounding pilot allocation module allocates a channel quality sounding guide in two different uplink pilot time slots in the same radio frame. The frequency includes: allocating a channel quality sounding pilot at a high frequency end position of one uplink pilot time slot, and allocating a channel quality sounding pilot frequency at a low frequency end position symmetrically of another uplink pilot time slot and a high frequency end.

The channel quality detecting apparatus according to any one of claims 10 to 14, wherein the random access channel allocation module allocates a random access channel in the remaining frequency bands of the uplink pilot time slot. At least one.

The channel quality detecting apparatus according to claim 15, wherein the random access channel allocation module allocates multiple random access channels in the remaining frequency bands of the uplink pilot time slot, and multiple random access channels There is no continuous distribution between the incoming channels, or a spaced apart distribution.

The channel quality detecting apparatus according to claim 16, wherein when the plurality of random access channels allocated by the random access channel allocating module are spaced apart, the channel quality detecting guide The frequency allocation module is further configured to allocate channel quality sounding pilots in the interval.

The channel quality detecting apparatus according to claim 17, wherein the random access channel allocation module allocates two random access channels, and the channel quality detecting pilot allocation module is configured to: A channel quality sounding pilot is allocated in the interval of the two random access channels.