CN101577959B - Method and device for multiplexing multi-user time slots - Google Patents
Method and device for multiplexing multi-user time slots Download PDFInfo
- Publication number
- CN101577959B CN101577959B CN2008100818397A CN200810081839A CN101577959B CN 101577959 B CN101577959 B CN 101577959B CN 2008100818397 A CN2008100818397 A CN 2008100818397A CN 200810081839 A CN200810081839 A CN 200810081839A CN 101577959 B CN101577959 B CN 101577959B
- Authority
- CN
- China
- Prior art keywords
- power
- users
- user
- multiplexing
- transmission
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000005540 biological transmission Effects 0.000 claims abstract description 75
- 230000001105 regulatory effect Effects 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 6
- 238000010295 mobile communication Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The embodiment of the invention discloses a method and device for multiplexing multi-user time slots. The method for multiplexing multi-user time slots comprises the following steps: receiving power control parameters reported by multiple users; obtaining a power regulation factor according to the power control parameters and regulating the transmission power of the users according to the power regulation factor; and multiplexing transmitting signals of the users according to the regulated transmission power. By the embodiment of the invention, a transmitting end dynamically regulates the transmission power among the users multiplexing a time slot by utilizing the power regulation factor, thereby realizing time slot multiplexing by the users when the transmission power required by the users multiplexing the same time slot is different, solving the problem of unbalanced power among the users multiplexing the time slot and meeting the requirement of the different transmission powers of the users.
Description
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a method and a device for multiplexing multi-user time slots.
Background
In the GERAN (Enhanced Data Rate For Global System For Mobile communications evolution Radio Access Network, Global System For Mobile communications evolution Network) standard evolution organized by 3GPP (3rd Generation Partnership Project), how to further improve the voice capacity of the System is one of the hot spots of current research. GSM (Global System For Mobile Communications ) is a time division multiplexing System, different users occupy different radio channel resources, and each timeslot allows only one user to access.
In the 36 standard conferences of GERAN, a MUROS (Multi User Reuse One Slot) project research group is formally established, and the core idea of MUROS is to make a plurality of voice users Reuse the same radio channel Slot.
The method utilizes the existing GMSK (Gaussian Minimum Shift Keying) transmission mode to simultaneously transmit the data of two users in a time slot, and simultaneously carries out pi/2 phase Shift on one path of signal to ensure that the signals of the two users are orthogonal. At the receiving end, the Interference of another user is eliminated by the SAIC (single antenna Interference Cancellation) technique.
However, the inventor finds that the above method requires equal transmission power of two users, and the required transmission power of the users in the actual system changes continuously, so that it is difficult to satisfy this condition. Therefore, the method has narrow application range and cannot be popularized and used.
Disclosure of Invention
The embodiment of the invention provides a method and a device for multiplexing multi-user time slots, which are used for realizing that when the required transmitting power of a plurality of users multiplexing the same time slot is different, the users can also multiplex one time slot at the same time.
To achieve the above object, an aspect of the embodiments of the present invention provides a method for multiplexing multiple user slots, including:
receiving power control parameters reported by a plurality of users;
acquiring a power adjustment factor according to the power control parameter, and adjusting the transmission power of the plurality of users according to the power adjustment factor;
multiplexing transmission signals of a plurality of users according to the adjusted transmission power;
wherein the obtaining of the power adjustment factor according to the power control parameter comprises: acquiring the transmission power required by the users according to the power control parameter, and acquiring the power adjustment factor according to the transmission power required by the users;
the obtaining the power adjustment factor according to the required transmission power of the plurality of users comprises:
calculating the ratio of the transmission power required by other users except the reference user in the plurality of users to the transmission power required by the reference user by taking the transmission power required by any user in the plurality of users as a reference, and taking the ratio as a power adjustment factor; or taking a preset power value as a reference, calculating a ratio of the transmission power required by each user in the plurality of users to the preset power value, and taking the ratio as a power adjustment factor.
In another aspect, an embodiment of the present invention further provides a device for multiplexing multiple user slots, where the device includes:
the power control module is used for receiving power control parameters reported by a plurality of users, acquiring power adjustment factors according to the received power control parameters, acquiring the transmission power required by the plurality of users according to the power control parameters, and acquiring the power adjustment factors according to the transmission power required by the plurality of users; the obtaining the power adjustment factor according to the required transmission power of the plurality of users specifically includes: calculating the ratio of the transmission power required by other users except the reference user in the plurality of users to the transmission power required by the reference user by taking the transmission power required by any user in the plurality of users as a reference, and taking the ratio as a power adjustment factor; or taking a preset power value as a reference, calculating a ratio of the transmission power required by each user in the plurality of users to the preset power value, and taking the ratio as a power adjustment factor;
the adjusting module is used for adjusting the sending power of the users according to the power adjusting factor obtained by the power control module;
and the multiplexing module is used for multiplexing the transmitting signals of the plurality of users according to the transmitting power adjusted by the adjusting module.
In another aspect, an embodiment of the present invention further provides a base station, including a device for multiplexing multiple user slots.
Compared with the prior art, the embodiment of the invention has the following advantages: according to the embodiment of the invention, the sending end dynamically adjusts the sending power of a plurality of users multiplexing a time slot by using the power adjustment factor, so that when the required sending power of a plurality of users multiplexing the same time slot is different, the users can also multiplex a time slot at the same time, the problem of unbalanced power among a plurality of users multiplexing a time slot is solved, and different sending power requirements of the users are met.
Drawings
FIG. 1 is a flow chart of a method for multi-user slot multiplexing according to an embodiment of the present invention;
FIG. 2 is a diagram illustrating the adjustment of a transmitted signal according to an embodiment of the present invention;
fig. 3 is a diagram illustrating a relationship between a power offset adjustment factor and power offsets of user 1 and user 2 according to an embodiment of the present invention;
fig. 4 is a structural diagram of a device for multi-user slot multiplexing according to an embodiment of the present invention.
Detailed Description
The embodiment of the invention provides a method for multiplexing multi-user time slots, wherein a sending end dynamically adjusts the sending power of a plurality of users multiplexing one time slot through a power adjustment factor, so that when the required sending power of the plurality of users multiplexing the same time slot is different, the users can also multiplex one time slot at the same time, the problem of unbalanced power among the plurality of users multiplexing one time slot is solved, and different sending power requirements of the users are met. The method for multiplexing the multi-user time slots provided by the embodiment of the invention is suitable for the situation that a plurality of users multiplex one time slot.
As shown in fig. 1, a flowchart of a method for multiplexing multi-user slots according to an embodiment of the present invention may include:
s101, receiving power control parameters reported by a plurality of users.
The power control parameter may be determined based on the received signal quality of the two users. After demodulating the received signal, the user determines whether the Quality of the current received signal meets the QoS (Quality of service) requirement, that is, generally, whether the frame error rate or the block error rate meets the requirement of correct reception, and then the user reports the power control parameter to the sending end. Different power control parameters indicate how much transmit power the transmit end is to increase or decrease. Therefore, the power control parameter reported by the user is a power variation value.
S102, obtaining a power adjustment factor according to the received power control parameter, and adjusting the sending power of a plurality of users according to the power adjustment factor.
The embodiment of the invention obtains the required sending power of a plurality of users according to the power control parameters fed back by the plurality of users, and obtains the power adjustment factors of the plurality of users according to the required sending power of the plurality of users.
The obtaining of the power adjustment factor according to the required transmission power of the multiple users may specifically be: calculating the ratio of the required transmitting power of other users to the required transmitting power of the user by taking the required transmitting power of any user as reference, and taking the ratio as a power adjustment factor; or,
and calculating the ratio of the required transmitting power of each user to the preset power value by taking a preset power value as reference, and taking the ratio as a power adjustment factor.
The following describes a method for calculating the power adjustment factor in detail, taking the calculation of the power adjustment factors of two users as an example.
As shown in fig. 2, which is a schematic diagram illustrating adjustment of a transmission signal according to an embodiment of the present invention, according to power control parameters fed back by a user 1 and a user 2, a ratio of currently required transmission powers of the user 1 and the user 2 is calculated, and the ratio is used as the power adjustment factor. Referring to fig. 2, suppose that the original transmission power of user 1 is E1User 2 has original transmission power E2The power variation corresponding to the power control parameter reported this time by the user 1 is Δ E1The power variation corresponding to the power control parameter reported this time by the user 2 is Δ E2Then the required transmit power of user 1 is E1+ΔE1The required transmission power of user 2 is E2+ΔE2Thus the power adjustment factor is <math><mrow><mi>μ</mi><mo>=</mo><msqrt><mfrac><mrow><msub><mi>E</mi><mn>1</mn></msub><mo>+</mo><mi>Δ</mi><msub><mi>E</mi><mn>1</mn></msub></mrow><mrow><msub><mi>E</mi><mn>2</mn></msub><mo>+</mo><mi>Δ</mi><msub><mi>E</mi><mn>2</mn></msub></mrow></mfrac></msqrt><mo>.</mo></mrow></math> In the embodiment of the present invention, the sending end adjusts the sending power of the user 1 through the power adjustment factor, so that the user 1 and the user 2 can be multiplexed on the same time slot.
The relationship between μ and the power offsets of the user 1 and the user 2 can be shown in fig. 3, and it can be seen from fig. 3 that when the transmission powers of the user 1 and the user 2 are the same, μ is 1; when the power offset of user 1 with respect to user 2 is about 6dB, μ is 2.
The situation shown in fig. 2 is that the transmit power of user 1 is adjusted by a power adjustment factor, i.e. the transmit power of user 1 and user 2 is adjusted with reference to the required transmit power of user 2. However, embodiments of the present invention are not limited thereto, such as: the transmitting power of the user 2 can be adjusted by using the power adjusting factor, and the power adjusting factor is obtained by taking the required transmitting power of the user 1 as a reference; or the power adjustment factors are used to simultaneously adjust the transmission power of the user 1 and the user 2, and at this time, the power adjustment factors of the two users can be respectively obtained by taking one preset power value as a reference.
Similarly, for the case of slot multiplexing for more than two users, for example: when N (N > 2) users perform time slot multiplexing, there are also various methods for adjusting the power of N users by using power adjustment factors, and at this time, at least (N-1) power adjustment factors are needed to adjust the power of the N users.
And S103, multiplexing the transmission signals of a plurality of users according to the adjusted transmission power.
The embodiment of the invention can multiplex the transmitting signals of a plurality of users according to the adjusted transmitting power and the power control factor.
As shown in fig. 2, taking two users in S102 as an example, the transmission signal multiplexed by the two users can be represented as:
s＝(μ·s1+s2) (1)
further, the transmission power of the multiplexed transmission signal s' can be adjusted to the transmission power actually required by a plurality of users by the power control factor, as shown in equation (2),
wherein,
indicating the transmit power control factor generated by the transmitting end. Assuming normalization of the baseband signal, i.e. E { | s1|2}＝1，E{|s2|21, when the required transmission power of user 1 is E1The required transmit power of user 2 is E2When the temperature of the water is higher than the set temperature, <math><mrow><msub><mi>E</mi><mn>1</mn></msub><mo>=</mo><msup><mrow><mo>|</mo><msqrt><mi>E</mi></msqrt><mi>μ</mi><msub><mi>s</mi><mn>1</mn></msub><mo>|</mo></mrow><mn>2</mn></msup><mo>=</mo><mi>E</mi><msup><mi>μ</mi><mn>2</mn></msup><mo>,</mo></mrow></math> therefore, the temperature of the molten metal is controlled,
is used to adjust the absolute value of the transmit power of the transmit signal, in the case shown in fig. 2, when the baseband signal is normalized,is equal to
According to the method for multiplexing the multi-user time slots, the sending end acquires the power required by the user and the corresponding power adjustment factor according to the power control parameter reported by the user each time, and dynamically adjusts the sending power of a plurality of users, so that when the power required by two users multiplexing the same time slot in actual use is unequal, the two users can multiplex the same time slot. In addition, the embodiment of the invention can adjust the transmitting power required by the signal modulated by the baseband modulation device by using the power adjustment factor, and does not change the existing baseband modulation device. When the baseband modulation apparatus modulates the signals of the user 1 and the user 2, modulation schemes such as GMSK and high order modulation may be used.
As shown in fig. 4, a block diagram of a device for multiplexing multiple user slots according to an embodiment of the present invention includes:
the power control module 41 is configured to receive power control parameters reported by multiple users, and obtain a power adjustment factor according to the received power control parameters;
an adjusting module 42, configured to adjust the transmit powers of the multiple users according to the power adjustment factors obtained by the power control module 41;
a multiplexing module 43, configured to multiplex the transmission signals of multiple users according to the transmission power adjusted by the adjusting module 42.
Among them, the power control module 41 may include:
a receiving submodule 411, configured to receive power control parameters reported by multiple users;
the adjustment factor obtaining submodule 412 is configured to obtain a power adjustment factor according to the power control parameter received by the receiving submodule 411.
The apparatus for multi-user slot multiplexing may further include: a power adjusting module 44, configured to adjust the transmission power of the transmission signal multiplexed by the multiplexing module 43 to the transmission power actually required by the multiple users through the power control factor.
In the embodiment of the present invention, the power control module 41 obtains the power adjustment factor according to the power control parameter reported by the user, the adjustment module 42 adjusts the transmission power of the baseband signals of the multiple users according to the power adjustment factor obtained by the power control module 41, and the multiplexing module 43 multiplexes the transmission signals of the multiple users according to the transmission power adjusted by the adjustment module 42. Further, the power adjustment module 44 may adjust the transmission power of the transmission signal multiplexed by the multiplexing module 43 to the transmission power actually required by the plurality of users by the power control factor.
Wherein the power control module 41 determines the power adjustment factor specifically as follows:
the receiving submodule 411 receives power control parameters reported by a plurality of users, and then the adjustment factor obtaining submodule 412 obtains a power adjustment factor according to the power control parameters received by the receiving submodule 411. The adjustment factor obtaining sub-module 412 obtains the required transmit powers of the multiple users according to the power control parameters fed back by the multiple users, and obtains the power adjustment factors of the multiple users according to the required transmit powers of the multiple users. The method specifically comprises the following steps: calculating the ratio of the required transmitting power of other users to the required transmitting power of the user by taking the required transmitting power of any user as reference, and taking the ratio as a power adjustment factor; or,
and calculating the ratio of the required transmitting power of each user to the preset power value by taking a preset power value as reference, and taking the ratio as a power adjustment factor.
The modules may be distributed in one device or may be distributed in a plurality of devices. The modules can be combined into one module, and can also be further split into a plurality of sub-modules.
The multi-user time slot multiplexing device can be independently arranged as a single device, and can also be integrated in base station equipment.
In the device for multiplexing the multi-user time slot, the power control module 41 obtains the power adjustment factor according to the power control parameter reported by the user each time, and the adjustment module 42 dynamically adjusts the transmission power of the multiple users according to the power adjustment factor calculated by the power control module 41, so that when the power required by the multiple users multiplexing the same time slot in actual use is unequal, the users can multiplex the same time slot.
From the above description of the embodiments, it is clear for those skilled in the art that the present invention can be implemented by hardware, or by software plus a necessary general hardware platform, and based on such understanding, the technical solution of the present invention can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a usb disk, a removable hard disk, etc.), and includes several instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute the method described in the embodiments of the present invention.
Those skilled in the art will appreciate that the drawings are merely schematic representations of one preferred embodiment and that the blocks or flow diagrams in the drawings are not necessarily required to practice the present invention.
Those skilled in the art will appreciate that the modules in the devices in the embodiments may be distributed in the devices in the embodiments according to the description of the embodiments, and may be correspondingly changed in one or more devices different from the embodiments. The modules of the above embodiments may be combined into one module, or further split into multiple sub-modules.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
The above disclosure is only for a few specific embodiments of the present invention, but the present invention is not limited thereto, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.
Claims (8)
1. A method for multi-user slot multiplexing, comprising:
receiving power control parameters reported by a plurality of users;
acquiring a power adjustment factor according to the power control parameter, and adjusting the transmission power of the plurality of users according to the power adjustment factor;
multiplexing transmission signals of a plurality of users according to the adjusted transmission power;
wherein the obtaining of the power adjustment factor according to the power control parameter comprises: acquiring the transmission power required by the users according to the power control parameter, and acquiring the power adjustment factor according to the transmission power required by the users;
the obtaining the power adjustment factor according to the required transmission power of the plurality of users comprises:
calculating the ratio of the transmission power required by other users except the reference user in the plurality of users to the transmission power required by the reference user by taking the transmission power required by any user in the plurality of users as a reference, and taking the ratio as a power adjustment factor; or taking a preset power value as a reference, calculating a ratio of the transmission power required by each user in the plurality of users to the preset power value, and taking the ratio as a power adjustment factor.
2. The method for multi-user slot multiplexing according to claim 1, wherein the power control parameter is determined based on received signal quality of the plurality of users.
3. The method for multi-user slot multiplexing according to claim 1, wherein after multiplexing the transmission signals of the plurality of users according to the adjusted transmission power, further comprising:
and adjusting the transmission power of the multiplexed transmission signal to the transmission power actually required by the plurality of users through the power control factor.
4. The method for multiplexing multi-user time slots according to claim 1, wherein the transmission signals of the plurality of users are output signals modulated by a baseband modulation device.
5. An apparatus for multiuser slot multiplexing, comprising:
the power control module is used for receiving power control parameters reported by a plurality of users, acquiring power adjustment factors according to the received power control parameters, acquiring the transmission power required by the plurality of users according to the power control parameters, and acquiring the power adjustment factors according to the transmission power required by the plurality of users; the obtaining the power adjustment factor according to the required transmission power of the plurality of users specifically includes: calculating the ratio of the transmission power required by other users except the reference user in the plurality of users to the transmission power required by the reference user by taking the transmission power required by any user in the plurality of users as a reference, and taking the ratio as a power adjustment factor; or taking a preset power value as a reference, calculating a ratio of the transmission power required by each user in the plurality of users to the preset power value, and taking the ratio as a power adjustment factor;
the adjusting module is used for adjusting the sending power of the users according to the power adjusting factor obtained by the power control module;
and the multiplexing module is used for multiplexing the transmitting signals of the plurality of users according to the transmitting power adjusted by the adjusting module.
6. The apparatus for multi-user slot multiplexing according to claim 5, wherein the power control module comprises:
a receiving submodule, configured to receive the power control parameters reported by the multiple users;
and the adjustment factor acquisition submodule is used for acquiring a power adjustment factor according to the power control parameter received by the receiving submodule.
7. The apparatus for multi-user slot multiplexing according to claim 5, further comprising:
and the power adjusting module is used for adjusting the transmitting power of the transmitting signals multiplexed by the multiplexing module into the transmitting power actually required by the plurality of users through the power control factor.
8. A base station comprising the apparatus for multiuser slot multiplexing according to any one of claims 5 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100818397A CN101577959B (en) | 2008-05-08 | 2008-05-08 | Method and device for multiplexing multi-user time slots |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100818397A CN101577959B (en) | 2008-05-08 | 2008-05-08 | Method and device for multiplexing multi-user time slots |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101577959A CN101577959A (en) | 2009-11-11 |
| CN101577959B true CN101577959B (en) | 2011-08-03 |
Family
ID=41272701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100818397A Expired - Fee Related CN101577959B (en) | 2008-05-08 | 2008-05-08 | Method and device for multiplexing multi-user time slots |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101577959B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102300302A (en) * | 2010-06-24 | 2011-12-28 | 中兴通讯股份有限公司 | Method and device for controlling joint power |
| CN105282834A (en) * | 2014-05-30 | 2016-01-27 | 中兴通讯股份有限公司 | Power allocation method and device |
| CN106162851B (en) * | 2015-03-27 | 2019-07-26 | 上海朗帛通信技术有限公司 | A kind of communication means and device of multi-user's superposition |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1387320A (en) * | 2001-05-19 | 2002-12-25 | Lg电子株式会社 | Increased close-loop power controlling method |
| EP1326356A1 (en) * | 2000-09-25 | 2003-07-09 | Huawei Technologies Co., Ltd. | Method for multiple time slot power control |
| CN1463110A (en) * | 2003-06-18 | 2003-12-24 | 清华大学 | Multiplexing method of combination of non-orthogonal partition and time division partition |
-
2008
- 2008-05-08 CN CN2008100818397A patent/CN101577959B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1326356A1 (en) * | 2000-09-25 | 2003-07-09 | Huawei Technologies Co., Ltd. | Method for multiple time slot power control |
| CN1387320A (en) * | 2001-05-19 | 2002-12-25 | Lg电子株式会社 | Increased close-loop power controlling method |
| CN1463110A (en) * | 2003-06-18 | 2003-12-24 | 清华大学 | Multiplexing method of combination of non-orthogonal partition and time division partition |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101577959A (en) | 2009-11-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5579622B2 (en) | Time slot sharing using non-uniform QPSK modulation | |
| CN102165726B (en) | Physical layer data unit format | |
| US5745480A (en) | Multi-rate wireless communications system | |
| US6785323B1 (en) | Variable rate coding for forward link | |
| US8045580B2 (en) | Band control method and communication apparatus | |
| CN104811996A (en) | Methods and apparatus for generating, communicating, and/or using information relating to self-noise | |
| WO1997037457A9 (en) | Multi-rate wireless communications system | |
| EP3086485B1 (en) | Uplink access method, device and system | |
| CN104918311B (en) | Poewr control method and device | |
| EP2883311B1 (en) | Multi-user multiple input multiple output radio communications | |
| JP2004120730A (en) | Method for communication, and transmitter and receiver using the same | |
| EP2510658B1 (en) | Apparatus and method for cubic metric computation in dual-carrier and multi-carrier wireless communication system | |
| EP2235855B1 (en) | Report mechanism in a radio system reusing one time-slot | |
| MXPA05010772A (en) | Method and apparatus for a spectrally compliant cellular communication system. | |
| CN101577959B (en) | Method and device for multiplexing multi-user time slots | |
| US6545990B1 (en) | Method and apparatus for a spectrally compliant cellular communication system | |
| WO2009096840A1 (en) | A method of power control | |
| WO2015053161A1 (en) | Radio apparatus, radio control apparatus and communication control method | |
| CN101243620A (en) | Allocation method, network element, module and user device | |
| US8761678B2 (en) | Radio transmitting method and apparatus, and radio receiving method and apparatus | |
| JP6635918B2 (en) | Wireless base station, master station device, slave station device, and control method | |
| CN104796184B (en) | Information and energy hybrid transmission method and device based on extensive antenna | |
| JP2006287530A (en) | Cellular mobile telecommunication system | |
| CN109286428B (en) | Processing method for channel state information estimation, network side equipment and terminal | |
| JP2005039473A (en) | Communication system, transmitter for the system, receiver for the system, and physical layer control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110803 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |