JPH09312881A - Configuration method for radio channel in cdma mobile radio communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve receiving quality or to improve capacity of a radio channel by constituting a down radio channel with a radio channel which has a transmission speed that is faster than the slowest transmission speed that can be provided as a call or which has the fastest transfer speed that can be provided as a call. SOLUTION: A down radio channel has down radio frames 11 to 15 for a high, intermediate and low speeds respectively. A call whose speed is slower than a transmission speed of the radio frame 11 performs time sharing of a radio frame 13, divides it into two time slots, allocates calls 1 and 2 to each slot, and multiple calls share the radio frame and transmit a signal. Also, a call whose speed is slower than a transmission speed of a radio frame 13 performs time sharing of a radio frame 15, divides it into four time slots, allocates one call to each slot, and multiple calls share the radio frame and transmit a signal. Because this makes transmission speeds be realized with only one radio channel, a hardware scale of a mobile station can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of constructing a wireless line between a mobile station and a base station in a code division multiple access system (hereinafter abbreviated as CDMA) mobile communication system.

[0002]

2. Description of the Related Art A conventional mobile communication system is mainly a voice service and has a wireless line structure having only a transmission rate applied to a voice transmission rate. It is necessary to construct a wireless line that can achieve the above transmission speed.

By the way, as a next-generation mobile communication system, a mobile communication system using CDMA is drawing attention, and is standardized as IS-95 in the United States to provide services.

However, the conventional CDMA mobile communication system has a wireless line configuration having a transmission rate applied only to the voice transmission rate, and can realize a plurality of types of transmission rates in consideration of multimedia transmission. There is a problem that it is not configured.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a CDMA mobile communication which enables a plurality of types of transmission rates so as to realize a multimedia service. It is to provide a method of configuring a wireless line in a system.

[0006]

To achieve the above object, the present invention according to claim 1 calls a downlink radio line transmitted from a base station to a mobile station in a code division multiple access mobile communication system. A wireless line having a transmission rate higher than the slowest transmission rate that can be provided as a call or a highest transmission rate that can be provided as a call, and one wireless line for a plurality of calls that provides a transmission rate slower than the transmission rate of the wireless line Are time-divisionally shared to perform signal transmission, and the plurality of calls are to a plurality of mobile stations or to one mobile station and are faster than the transmission rate after the time division and are equal to or lower than the transmission rate of the wireless line. A call that provides a transmission rate of 1 wireless line is exclusively used for a call, and a call that provides a transmission rate higher than the transmission rate of a single wireless line Unused portions obtained by dividing the time Oite are summarized as to not transmit.

According to the present invention of claim 1, the downlink radio line is constituted by a radio line having a higher transmission rate than the slowest transmission rate that can be provided as a call or a highest transmission rate that can be provided as a call. Also, since one wireless line is time-shared by a plurality of calls that provide a transmission rate lower than that of the wireless line, and the plurality of calls can be to a plurality of mobile stations, that is, the transmission rate Since one wireless line can be shared by a plurality of mobile stations for multiple slow calls, the mobile station only needs to have one correlator regardless of the transmission rate of the provided service, and the hardware scale can be reduced. In addition, the orthogonalized spreading code can be effectively used, and the reception quality or the wireless line capacity can be improved.

[0008] The present invention according to claim 2 is based on claim 1.
In the invention described above, the gist is that the wireless line repeatedly transmits a wireless frame, the wireless frame is time-divided into a plurality of time slots, and one time slot is assigned to one call.

According to the second aspect of the present invention, the wireless line repeatedly transmits a wireless frame, the wireless frame is time-divided into a plurality of time slots, and one time slot for one call. Have been assigned.

Further, the present invention according to claim 3 provides the present invention as claimed in claim 2.
In the invention described above, a plurality of types of transmission rates are defined in advance as the transmission rate per time slot, and at the time when a call occurs, the highest transmission rate of the time slots having a transmission rate higher than the transmission rate required for the call The point is to determine the type of slow time slot, select an empty time slot having that transmission rate, and assign it to the call.

In the present invention as defined in claim 3, since a plurality of types of transmission rates are defined in advance as the transmission rate per one time slot, it is possible to simplify the allocation of the time slot in the wireless line. it can.

According to a fourth aspect of the present invention, in the second aspect of the invention, transmission power control information is included in each time slot, and transmission power control is performed for each mobile station using each time slot. Is the gist.

In the present invention according to claim 4, transmission power control information is included in each time slot, and transmission power control is performed for each mobile station using each time slot.
Even when one wireless line is shared by a plurality of mobile stations, different transmission power control can be performed for each mobile station.

The present invention according to claim 5 provides the invention according to claim 2.
In the invention described above, synchronization information for establishing reception synchronization in a mobile station is arranged for each radio frame, and the synchronization information for each radio frame is shared by a plurality of mobile stations using a plurality of time slots in the radio frame. However, the point is to synchronize with each mobile station.

According to the present invention of claim 5, the synchronization information is arranged for each radio frame, and the synchronization information for each radio frame is shared by a plurality of mobile stations using a plurality of time slots in the radio frame. Therefore, the information in the wireless line can be effectively used.

Further, the present invention described in claim 6 is the same as claim 2 of the present invention.
In the invention described above, a pilot signal, which is a known bit pattern for performing synchronous detection reception in a mobile station, is arranged for each radio frame, and the pilot for each radio frame is used by a plurality of mobile stations using a plurality of time slots. The gist is to share signals and perform synchronous detection reception at each mobile station.

In a sixth aspect of the present invention, a plurality of mobile stations using a plurality of time slots by arranging pilot signals, which are known bit patterns for performing synchronous detection reception, for each radio frame. Since the pilot signal is shared for each wireless frame, the information in the wireless line can be effectively used.

According to a seventh aspect of the present invention, in the mobile communication system of the code division multiple access system, the uplink radio line transmitted from the mobile station to the base station is a plurality of types of radio lines having different transmission rates, and the plurality of radio lines are provided. One of a kind of wireless line
The type is a wireless line having the slowest transmission rate that can be provided as a call, the other type has a higher transmission rate than the slowest transmission rate that can be provided, and as a method of selecting the wireless line to be used, Use the wireless line with the lowest transmission speed among the wireless lines that have a transmission speed that is equal to or higher than that required by the call, and the transmission speed that the call requires is greater than the transmission speed of the wireless line that has the maximum transmission speed In some cases, the point is to use multiple wireless lines.

According to the present invention of claim 7, a plurality of types of wireless lines having different transmission rates constitute an upstream wireless line, and one of the plurality of types of wireless lines can be provided as a call. Since the wireless line has the slowest transmission rate, and the other types have the higher transmission rate than the slowest transmission rate that can be provided, that is, the required transmission rate is realized by one wireless line. Therefore, the peak factor of the transmission power of the mobile station is reduced and the hardware configuration of the amplifier of the mobile station can be suppressed as compared with the case where a plurality of wireless lines are bundled to realize a required transmission rate.

Further, the present invention according to claim 8 is faster than the slowest transmission rate that can be provided as a call for an uplink radio line transmitted from a mobile station to a base station in a code division multiple access mobile communication system. A wireless line having a transmission rate or the highest transmission rate that can be provided as a call,
A plurality of calls that provide a transmission rate slower than the transmission rate of the wireless line, wherein a plurality of calls handled by one mobile station share one wireless line in a time-sharing manner, perform signal transmission, and perform the time-sharing. A call that provides a transmission rate that is faster than the transmission rate of the latter and lower than the transmission rate of the wireless line exclusively uses one wireless line,
A call that provides a transmission rate higher than that of one wireless line uses a plurality of wireless lines exclusively and does not transmit an unused part of the wireless line that is time-divided.

According to the present invention of claim 8, the upstream radio line is constituted by a radio line having a higher transmission rate than the slowest transmission rate that can be provided as a call or a highest transmission rate that can be provided as a call. Moreover, one radio line is time-shared by a plurality of calls that provide a transmission rate lower than that of the radio line, and the plurality of calls are handled by one mobile station, that is, one radio line. Since the line can handle a plurality of calls, setting / release of the wireless line can be made unnecessary when setting / release of each call.

Furthermore, the present invention according to claim 9 provides the invention according to claim 8.
In the invention described above, the gist is that the wireless line repeatedly transmits a wireless frame, the wireless frame is time-divided into a plurality of time slots, and one time slot is assigned to one call.

According to the present invention of claim 9, the wireless line repeatedly transmits a wireless frame, the wireless frame is time-divided into a plurality of time slots, and one time slot is assigned to one call. ing.

According to the present invention of claim 10, in the invention of claim 9, a plurality of kinds of transmission rates are defined in advance as transmission rates per one time slot, and when a call occurs, the call is required for the call. The gist is to determine a time slot having the slowest transmission rate among time slots having a transmission rate equal to or higher than the transmission rate, select an empty time slot having the transmission rate, and allocate it to a call.

According to the tenth aspect of the present invention, since a plurality of types of transmission rates are defined in advance as the transmission rate per time slot, it is possible to simplify the allocation of the time slots in the wireless line. it can.

The present invention according to claim 11 is the same as the invention according to claim 9, wherein transmission is performed for each radio frame. The point is to place force control information.

In the present invention according to claim 11, the transmission power control information is arranged for each radio frame.

Further, the present invention according to claim 12 is, in the invention according to claim 9, characterized in that synchronization information for establishing reception synchronization in a mobile station is arranged for each radio frame.

According to the twelfth aspect of the present invention, synchronization information for receiving synchronization at the mobile station is arranged for each radio frame.

A thirteenth aspect of the present invention is characterized in that, in the ninth aspect, a pilot signal which is a known bit pattern for performing synchronous detection reception in a mobile station is arranged for each radio frame. .

According to the present invention, the pilot signal, which is a known bit pattern for performing synchronous detection reception in the mobile station, is arranged for each radio frame.

[0032]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a CD according to an embodiment of the present invention.
It is a figure which shows the structure of the radio | wireless line in MA mobile communication system.

As shown in FIG. 1, in the CDMA mobile communication system, the downlink radio channel from the base station to the mobile station is the high-speed downlink radio channel 11, the medium-speed downlink radio channel 13, and the low-speed downlink radio channel 15. It is composed of a plurality of downlink radio lines set for different transmission rates.

Each radio line is constructed as a radio frame which is repeatedly transmitted. The radio frame is time-divided into a plurality of time slots, and one time slot is assigned to one call. . That is, the downlink radio line includes the high-speed downlink radio frame 11, the medium-speed downlink radio frame 13, and the low-speed downlink radio frame 1.
It is composed of 5.

The high speed downlink radio frame 11 is
It has a faster transmission rate than the slowest transmission rate that can be offered as a call or the fastest transmission rate that can be offered as a call, eg a transmission rate of 128 kbps. Therefore, in this case, the high-speed downlink radio frame 11 is set to 1 as an example.
It is composed of 1280 bits of 0 ms. Here, in the radio frame configuration of FIG. 1, a pilot signal (PI
LOT), the synchronization signal (SYNC), and the transmission power control information (TPC) are included, but the number of bits is a small number with respect to the total number of bits of the radio frame. This information is ignored when discussing the number of bits and transmission rate.

For a call providing a transmission rate slower than the transmission rate of the high speed downlink radio frame 11, for example, 64 kbps, as shown in the medium speed downlink radio frame 13, the radio frame is time-divided and divided into a plurality of time slots. , One call is assigned to each time slot, a radio frame is shared by a plurality of calls, and signal transmission is performed. The mid-speed downlink radio frame 13 shown in FIG. 1 is divided into two time slots, call 1 is assigned to the first time slot, and call 2 is assigned to the second time slot.
When the high speed downlink radio frame 11 has a transmission rate of 128 kbps, each time slot of the medium speed downlink radio frame 13 has a transmission rate of 64 kbps.

A call providing a transmission rate lower than the transmission rate of the medium-speed downlink wireless frame 13, for example, 32 kbps, is divided into a plurality of time slots by time-dividing the wireless frame as shown in the low-speed downlink wireless frame 15. , One call is assigned to each time slot, the radio frame is shared by a plurality of calls, and signal transmission is performed. The low-speed downlink radio frame 15 shown in FIG. 1 is divided into four time slots, and calls 1 to 4 are assigned to the first to fourth time slots, respectively. The high speed downlink radio frame 11 has a transmission rate of 128 kbps, and each time slot of the medium speed downlink radio frame 13 is 64 kb.
When it has a transmission rate of ps, the transmission rate of each time slot of the low speed downlink radio frame 15 is 32 kbps.
It is.

When the radio frame is time-divided into a plurality of time slots as described above, it is not necessary to transmit a portion corresponding to an unused time slot in the CDMA mobile communication system, so that the interference power can be reduced. It is possible to reduce the number and improve the wireless line capacity.

The plurality of calls assigned to each time slot of the medium speed downlink radio frame 13 and the low speed downlink radio frame 15 may be for a plurality of mobile stations, or for one mobile station. It may be one.

As described above, in a radio frame divided into a plurality of time slots, a call that provides a transmission rate higher than the transmission rate after the division but lower than the transmission rate of the radio frame is one radio frame. Have a monopoly. For example, a call that provides a transmission rate of 96 kbps cannot be handled in each time slot of the medium-speed downlink wireless frame 13, so that a high-speed downlink wireless frame 1 of 128 kbps is used.
Use 1 exclusively.

A call that provides a transmission rate higher than the transmission rate of a radio frame exclusively uses a plurality of radio frames. For example, a call providing a transmission rate of 192 kbps or 256 kbps is a high-speed downlink radio frame 11
Signal transmission is performed using two.

As described above, when the radio frame is time-divided and divided into a plurality of time slots, the transmission speed of the time slot in which the middle-speed downlink radio frame 13 is time-divided is, for example, 64 kbps, and the low-speed downlink. A plurality of types are defined as the transmission rate per time slot so that the transmission rate of the time slot obtained by time-dividing the wireless frame 15 is 32 kbps. Then, when a call occurs, the type of the time slot having the slowest transmission rate among the time slots having a transmission rate equal to or higher than the transmission rate required for the call is determined, and an empty time slot having the transmission rate is selected. I try to assign it to the call. By thus defining a plurality of types as the transmission rate per time slot, it is possible to simplify the time slot allocation in the wireless line. Furthermore, 1
The wireless line can be used efficiently.

Further, as described above, by configuring the wireless frame as the wireless frame having the highest transmission rate provided by the call, one wireless line can be handled regardless of the transmission rate of the provided service. Since the mobile station only needs to have one correlator, the hardware scale can be reduced.

In the downlink radio channel, all downlink radio channels transmitted to a plurality of other mobile stations in the same cell / sector in all mobile stations become interference power, which deteriorates the reception quality or causes the radio quality to deteriorate. It becomes a factor to deteriorate the line capacity. However, by using a plurality of spreading codes that are orthogonalized to each downlink radio channel and transmitting in the same phase from the base station, other downlink radio channels transmitted within the same cell / sector are orthogonalized. Interference power is 0
Therefore, it is possible to expect improvement in reception quality or improvement in wireless line capacity. However, the number of orthogonalized spreading codes is not so large.
Therefore, contrary to the present embodiment, when a communication channel with a low transmission rate is used as a base, there is a problem that the wireless line capacity cannot be sufficiently used due to the shortage of the number of spreading codes. By adopting a wireless line having a relatively high transmission rate as in the embodiment, it is possible to provide a service having a low transmission rate to a plurality of mobile stations with one wireless line, that is, one spreading code. It can make up for the shortage.

In FIG. 1, each downlink radio frame 11,
As shown at the left end of 13, 15, a pilot signal (PILO) including synchronization information (SYNC) 11a, 13a, 15a and a known bit pattern for each radio frame (PILO).
T) 11b, 13b, 15b are arranged respectively.

Synchronization information (SYNC) 11a, 13a, 1
Information 5a is information for establishing reception synchronization at the mobile station, which is shared by a plurality of mobile stations that use a plurality of time slots forming a radio frame and is adapted to achieve synchronization at each mobile station. In this way, since one synchronization information (SYNC) in a radio frame is shared by a plurality of mobile stations, the bits in the radio frame can be used effectively.

The pilot signal (PILOT) has a known bit pattern for performing synchronous detection reception at the mobile station. More specifically, in the case of performing synchronous detection reception, in the mobile communication system, the transfer function of the propagation path changes greatly with time as the mobile station moves, so synchronous detection is performed while estimating the transfer function of the propagation path at high speed. Inserts a pilot signal (PILOT) into a radio frame for high-speed estimation of the transfer function of this propagation path, and transmits the pilot signal (PILOT) in the mobile station on the receiving side.
Is used to perform synchronous detection while estimating the transfer function of the propagation path at high speed. This pilot signal (P
Similarly to the synchronization information (SYNC), the ILOT can share one pilot signal (PILOT) in each radio frame with a plurality of mobile stations, and can effectively use the bits in the radio frame.

Further, as shown in FIG. 1, transmission power control information (TPC) is provided for each radio frame 11, 13, 15 and each time slot into which the radio frames 13, 15 are divided.
11c, 13c, 13d, 15c, 15d, 15e, 1
5f is provided, and transmission power control information (TPC) is used to perform transmission power control for each mobile station using each time slot.

On the other hand, the uplink radio line from the mobile station to the base station is also different for each different transmission rate such as the high-speed uplink radio line 21, the medium-speed uplink radio line 23, and the low-speed uplink radio line 25 or 27. It is composed of a plurality of set uplink radio lines.

That is, an upstream radio line is configured by a plurality of types of radio lines having different transmission rates, and in this case, one type of the plurality of types of radio lines has the slowest transmission rate that can be provided as a call, for example, 32 kbps. The wireless line is set as the low speed upstream wireless line 27, and other types of wireless lines have a higher transmission rate than the slowest transmission rate that can be provided, for example, 64 kbps and 1
Radio lines having 28 kbps are set as the medium speed upstream radio line 23 and the high speed upstream radio line 21, respectively. Then, as a method of selecting a wireless line to be used, a wireless line having the slowest transmission speed is used among the wireless lines having a transmission speed equal to or higher than the transmission speed required by the call. For example, for a call having a transmission rate of 32 kbps or less, the low-speed upstream radio line 27 having a transmission rate of 32 kbps is selected, and for a call having a transmission rate of 48 kbps, for example, a transmission rate of 48 kbps or more is selected. 6 as the slowest wireless line among wireless lines
The medium speed upstream radio line 23 of 4 kbps is selected. Further, when the transmission rate required by the call is greater than the transmission rate of the wireless channel having the maximum transmission rate, for example, 128 kbps, a plurality of high-speed upstream wireless channels 21 having a transmission rate of 128 kbps are used. .

As in this embodiment, the required transmission rate is set to 1
By implementing this with a single wireless line, it is possible to reduce the peak factor of the transmission power of the mobile station compared to the case of bundling multiple wireless lines to achieve the required transmission rate. The hardware scale can be reduced.

Further, in the future, it is considered that there is a need for a small mobile station dedicated to a service having a low transmission rate. However, here, it is assumed that the transmission rate is not the wireless line configuration as in this embodiment described above. If only a high-speed wireless line is used and a part of this wireless line is used to provide a service with a low transmission rate, the mobile station needs a large transmission power required for the high-speed wireless line. Therefore, the peak power is required, the hardware scale of the transmission amplifier of the mobile station becomes large, and miniaturization becomes difficult. On the contrary,
By enabling the setting of a wireless line having a low transmission rate as in this embodiment described above, this mobile station only needs to have the ability to set a low-speed wireless line, and therefore the peak power of the required transmission power is required. Can be reduced and the hardware scale of the amplifier can be suppressed.

By the way, each radio line is constructed as a radio frame repeatedly transmitted, the radio frame is time-divided into a plurality of time slots, and one time slot is assigned to one call. ing. That is, the upstream radio line is composed of a high-speed upstream radio frame 21, a medium-speed upstream radio frame 23, and a low-speed upstream radio frame 25 or 27.

Then, the high-speed upstream radio frame 21 is
It has a faster transmission rate than the slowest transmission rate that can be offered as a call or the fastest transmission rate that can be offered as a call, eg a transmission rate of 128 kbps. In this example, the wireless frame is composed of 1280 bits of 10 ms. The medium-speed upstream radio frame 23 has a transmission rate lower than the transmission rate of the high-speed upstream radio frame 21, for example, 64 kbps.

The transmission speed of the upstream radio frame 23 for medium speed,
Transmission rate slower than 64 kbps, eg 32 kbps
As in the case of the low-speed upstream radio frame 25, the radio frame is time-divided into a plurality of time slots, one call is assigned to each time slot, and the radio frame is shared by the plurality of calls. There is. That is, the low-speed upstream radio frame 25 is divided into two time slots each having a transmission rate of 32 kbps, call 1 is assigned to the first time slot, and call 2 is assigned to the second time slot. . The plurality of calls are handled by one mobile station. That is, since one wireless line can handle a plurality of calls, setting / release of the wireless line can be eliminated when setting / releasing for each call. In a radio frame time-divided into a plurality of time slots, unused time slot portions are not transmitted, which reduces interference power,
The wireless line capacity can be improved.

When the radio frame is time-divided into a plurality of time slots, FIG. 1 shows only the low-speed upstream radio frame 25 which is time-divided into two time slots. As with each time slot of the downlink radio frame, a plurality of types are defined as the transmission rate per one time slot. Then, when a call occurs, the type of the time slot having the slowest transmission rate among the time slots having a transmission rate equal to or higher than the transmission rate required for the call is determined, and an empty time slot having the transmission rate is selected. I try to assign it to the call.

Further, a call that provides a transmission rate that is higher than the transmission rate of each time slot after time division and is equal to or lower than the transmission rate of a radio frame exclusively uses the radio frame. For example, a call providing a transmission rate of 48 kbps is faster than the transmission rate of 32 kbps of each time slot of the low speed upstream radio frame 25, and thus 64 kbps.
The medium-speed upstream radio frame 23 having the transmission rate of 10 is exclusively used.

Further, 64 of the medium speed upstream radio frame 23
A call that provides a transmission rate higher than kbps uses the high-speed upstream radio frame 21 having a transmission rate of 128 kbps, but a call that provides a transmission rate faster than 128 kbps transmits a 128 kbps transmission rate. A plurality of high-speed upstream radio frames 21 having a certain speed are used exclusively.

Each upstream radio frame 21, 23, 25, 2
As shown at the left end of FIG. 7, a pilot signal (PILO) consisting of synchronization information (SYNC) 21a, 23a, 25a, 27a and a known bit pattern for each radio frame is provided.
T) 21b, 23b, 25b, 27b are arranged respectively. Synchronization information (SYNC) 21a, 23a, 25
a and 27a are information for establishing reception synchronization at the base station, and are shared by a plurality of calls using a plurality of time slots forming a radio frame. The pilot signals (PILOT) 21b, 23b, 25b, 27b are
The base station has a known bit pattern for performing synchronous detection reception.

Further, each radio frame 21, 23, 25,
27 includes transmission power control information (TPC) 21c and 23.
c, 25c, 27c are provided, and the transmission power control information (TPC) is used to perform the transmission power control in the base station.

In the display of the uplink radio line in FIG. 1, the transmission power shown in the vertical direction is displayed in large proportion to the transmission rate, but this is the same bit on the receiving side even when the transmission rate is increased. The transmission power is raised to obtain the error rate. That is, regardless of the transmission rate, the transmission power is increased in proportion to the transmission rate so that the transmission power per bit is the same in order to obtain the same bit error rate.

[0063]

As described above, according to the present invention,
Since the downlink wireless line is configured by the wireless line having the higher transmission rate than the slowest transmission rate that can be provided as a call or the highest transmission rate that can be provided as a call, the mobile station does not depend on the transmission rate of the provided service. Has only one correlator, and the hardware scale can be reduced. Further, since one wireless line is time-divisionally shared by a plurality of calls that provide a transmission rate lower than that of the wireless line, and the plurality of calls can be to a plurality of mobile stations, that is, the transmission rate Since a single wireless link can be shared by multiple mobile stations for multiple slow calls, a finite number of orthogonalized spreading codes can be effectively used to improve reception quality or wireless link capacity. Can be planned. Further, since the unused portion which is time-divided in the wireless line is not transmitted, the interference power can be reduced and the wireless line capacity can be improved.

Further, according to the present invention, since a plurality of types of transmission rates are defined in advance as the transmission rate per time slot, it is possible to simplify the allocation of time slots in the wireless line. Furthermore, the wireless line can be used efficiently.

Furthermore, in the present invention, transmission power control information is included in each time slot, and transmission power control is performed for each mobile station that uses each time slot. Even in the case of sharing with each other, different transmission power control can be performed for each mobile station.

According to the present invention, the synchronization information for each radio frame can be shared by a plurality of mobile stations that use a plurality of time slots in the radio frame, so that the information in the radio line can be effectively used. it can.

Further, according to the present invention, a pilot signal, which is a known bit pattern for performing synchronous detection reception, is arranged for each radio frame, and a plurality of mobile stations that use a plurality of time slots are arranged for each radio frame. Since the pilot signal of is shared, the information in the wireless line can be effectively used.

Further, according to the present invention, an upstream radio line is configured by a plurality of types of radio lines having different transmission rates, and one type of the plurality of types of radio lines is the slowest transmission rate that can be provided as a call. Since the other type has a higher transmission rate than the slowest transmission rate that can be provided, that is, the required transmission rate is realized by one wireless line, The peak factor of the transmission power of the mobile station is reduced and the hardware configuration of the transmission amplifier of the mobile station can be suppressed as compared with the case where the required transmission rate is realized by bundling the wireless lines. Furthermore, 1
By considering the necessity of a small mobile station, the transmission power of the mobile station can be reduced by considering the type as a wireless line having the slowest transmission speed that can be provided as a call, and the transmission amplifier of the mobile station The hardware configuration can be reduced.

According to the present invention, an upstream radio line is constituted by a radio line having a higher transmission rate than a slowest transmission rate that can be provided as a call or a highest transmission rate that can be provided as a call, and the transmission of the wireless line is performed. Since one wireless line is time-divisionally shared by a plurality of calls that provide a transmission speed slower than the speed, and the plurality of calls are handled by one mobile station, that is, a plurality of calls are handled by one wireless line. Since it can be handled, it is not necessary to set / release the wireless line when setting / releasing for each call. Moreover, since the unused portion which is time-divided in the wireless line is not transmitted, the interference power can be reduced and the wireless line capacity can be improved.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a wireless line in a CDMA mobile communication system according to an embodiment of the present invention.

[Explanation of symbols]

11 High Speed Downlink Wireless Line 13 Medium Speed Downlink Wireless Line 15 Low Speed Downlink Wireless Line 21 High Speed Uplink Wireless Line 23 Medium Speed Uplink Wireless Line 25, 27 Low Speed Uplink Wireless Line 11a, 13a, 15a, 21a, 23a, 25a, 2
7a Synchronization information 11b, 13b, 15b, 21b, 23b, 25b, 2
7b Pilot signal 11c, 13c, 13d, 15c, 15d, 15e, 1
5f, 21c, 23c, 25c, 27c Transmission power control information

Claims (13)

[Claims] 1. A downlink radio line transmitted from a base station to a mobile station in a code division multiple access mobile communication system is provided with a higher transmission rate than a slowest transmission rate that can be provided as a call, or a highest transmission rate that can be provided as a call. A wireless line having a high transmission rate is provided, and a plurality of calls that provide a transmission rate slower than the transmission rate of the wireless line share one wireless line in a time-sharing manner to perform signal transmission. For mobile stations or 1
A call for a mobile station, which is faster than the transmission rate after the time division and provides a transmission rate equal to or lower than the transmission rate of the wireless line, uses one wireless line exclusively, and A method of configuring a wireless line in a CDMA mobile communication system, wherein a call that provides a high transmission rate exclusively uses a plurality of wireless lines and does not transmit an unused portion that is time-shared in the wireless line. 2. The wireless circuit repeatedly transmits a wireless frame, the wireless frame is time-divided into a plurality of time slots, and one time slot is assigned to one call. A method for configuring a wireless line in the CDMA mobile communication system described. 3. A plurality of types of transmission rates are defined in advance as a transmission rate per time slot, and at the time when a call occurs, the highest transmission rate of the timeslots having a transmission rate higher than the transmission rate required for the call. 3. The method for configuring a wireless line in a CDMA mobile communication system according to claim 2, wherein the type of the slow time slot is determined, an empty time slot having the transmission rate is selected, and assigned to the call. 4. The C according to claim 2, wherein transmission power control information is included in each time slot, and transmission power control is performed for each mobile station using each time slot.
A method of configuring a wireless line in a DMA mobile communication system. 5. The synchronization information for receiving synchronization in a mobile station is arranged for each radio frame, and the synchronization information for each radio frame is shared by a plurality of mobile stations using a plurality of time slots in the radio frame. The method for configuring a wireless line in a CDMA mobile communication system according to claim 2, wherein each mobile station synchronizes with each other. 6. A pilot signal, which is a known bit pattern for performing synchronous detection reception in a mobile station, is arranged for each radio frame, and the pilot for each radio frame is used by a plurality of mobile stations using a plurality of time slots. 3. The method for configuring a wireless line in a CDMA mobile communication system according to claim 2, wherein signals are shared and each mobile station performs synchronous detection reception. 7. In a code division multiple access mobile communication system, an uplink wireless line transmitted from a mobile station to a base station is a plurality of types of wireless lines having different transmission rates, and one of the plurality of types of wireless lines is used. The type is a wireless line that has the slowest transmission rate that can be provided as a call, and the other type has a transmission rate that is faster than the slowest transmission rate that can be provided, and as a selection method of the wireless line to be used, Use the wireless line with the lowest transmission speed among the wireless lines that have a transmission speed that is equal to or higher than the transmission speed that the call requires, and the transmission speed that the call requires is greater than the transmission speed of the wireless line that has the maximum transmission speed. In some cases, a plurality of wireless lines are used, and a method of configuring a wireless line in a CDMA mobile communication system. 8. An uplink radio line transmitted from a mobile station to a base station in a code division multiple access mobile communication system is provided with a higher transmission rate than a slowest transmission rate that can be provided as a call, or the highest transmission rate that can be provided as a call. A wireless line having a high transmission rate, and a plurality of calls that provide a transmission rate slower than the transmission rate of the wireless line. One call is shared by a plurality of calls handled by one mobile station. , A call that performs signal transmission and provides a transmission speed that is faster than the transmission speed after the time division and is equal to or lower than the transmission speed of the wireless line, uses one wireless line exclusively, and A radio line in a CDMA mobile communication system characterized in that a call providing a high transmission rate exclusively uses a plurality of radio lines and does not transmit an unused portion which is time-divided in the radio line. How to configure. 9. The wireless line repeatedly transmits a wireless frame, the wireless frame is time-divided into a plurality of time slots, and one time slot is assigned to one call. A method for configuring a wireless line in a CDMA mobile communication system. 10. A plurality of types of transmission rates are defined in advance as a transmission rate per time slot, and at the time when a call occurs, the highest transmission rate of the time slots having a transmission rate higher than the transmission rate required for the call is set. 10. The method for configuring a wireless line in a CDMA mobile communication system according to claim 9, wherein a slow time slot is determined, an empty time slot having the transmission rate is selected and assigned to a call. 11. The method for configuring a wireless line in a CDMA mobile communication system according to claim 9, wherein transmission power control information is arranged for each wireless frame. 12. The method of configuring a radio channel in a CDMA mobile communication system according to claim 9, wherein synchronization information for establishing reception synchronization in the mobile station is arranged for each radio frame. 13. The CDM according to claim 9, wherein a pilot signal having a known bit pattern for performing synchronous detection reception in the mobile station is arranged for each radio frame.
A method of configuring a wireless line in a mobile communication system.