CN114449661A - Main and auxiliary earphone communication method of TWS earphone and TWS earphone - Google Patents
Main and auxiliary earphone communication method of TWS earphone and TWS earphone Download PDFInfo
- Publication number
- CN114449661A CN114449661A CN202111502726.1A CN202111502726A CN114449661A CN 114449661 A CN114449661 A CN 114449661A CN 202111502726 A CN202111502726 A CN 202111502726A CN 114449661 A CN114449661 A CN 114449661A
- Authority
- CN
- China
- Prior art keywords
- earphone
- communication
- main
- auxiliary
- main earphone
- 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.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1041—Mechanical or electronic switches, or control elements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R5/00—Stereophonic arrangements
- H04R5/033—Headphones for stereophonic communication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a main and auxiliary earphone communication method of a TWS earphone and the TWS earphone, wherein the method comprises the following steps: the method comprises the steps that a Bluetooth connection is established between a main earphone and intelligent equipment, a main-auxiliary connection is established between the main earphone and an auxiliary earphone, and the auxiliary earphone monitors data communicated between the main earphone and the intelligent equipment by receiving aerial signals; switching to the communication of the main earphone and the auxiliary earphone in an idle time slot of the communication between the main earphone and the intelligent equipment; after the communication of the main earphone and the auxiliary earphone is switched, the main earphone and the auxiliary earphone carry out data sending and receiving, and after a first preset time interval, the communication of the main earphone and the intelligent equipment is switched. The embodiment of the invention can complete the communication between the left ear and the right ear under the condition of not influencing the communication performance of the mobile phone and the left ear by effectively utilizing the idle time slot of the communication between the mobile phone and the left ear to carry out the communication between the left ear and the right ear, thereby realizing the function of the TWS earphone.
Description
Technical Field
The invention relates to the field of Bluetooth communication, in particular to a main earphone and auxiliary earphone communication method of a TWS earphone and the TWS earphone.
Background
In a typical TWS headset scheme, a TWS primary and secondary headset needs to establish connection and communication for forwarding audio data, as shown in fig. 1, a left headset is used as a primary headset, a right headset is used as a secondary headset, a left headset establishes bluetooth communication with a mobile phone, a left headset establishes bluetooth communication with a right headset, and a right headset listens for data communicated between the left headset and the mobile phone.
A typical timing chart of the handset and left-ear communication and the left-ear and right-ear communication is shown in fig. 2, in a left-ear and right-ear communication window, the left ear performs TX to transmit to the right ear, the right ear performs RX to receive data of the left ear, at this time, the handset does not know that the left ear and the right ear are in communication, the handset is a Master which actively transmits data to the left ear, and the left ear is not in an RX handset packet state (the left ear transmits TX data to the right ear at this time), so that the handset data cannot be received. If the frequency hopping of the mobile phone and the frequency hopping of the left ear and the right ear collide with the same frequency point, the communication of the left ear and the right ear can be interfered. The disadvantage of the design can cause that the mobile phone fails to send in the left and right ear communication windows and needs a large amount of retransmission, which causes the music jamming, the power consumption increase and even influences the main and auxiliary communication (when the frequency hopping hits the use of the same frequency).
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a main earphone and auxiliary earphone communication method of a TWS earphone, which can realize left ear and right ear communication on the premise of not influencing the communication between intelligent equipment and the earphone, and improve the communication performance of the TWS earphone.
The invention also provides a TWS earphone using the method.
The main-auxiliary earphone communication method of the TWS earphone according to the embodiment of the first aspect of the invention comprises the following steps: the method comprises the steps that a Bluetooth connection is established between a main earphone and intelligent equipment, a main-auxiliary connection is established between the main earphone and an auxiliary earphone, and the auxiliary earphone monitors data communicated between the main earphone and the intelligent equipment by receiving aerial signals; switching to the communication of the main earphone and the auxiliary earphone in an idle time slot of the communication between the main earphone and the intelligent equipment; after the communication of the main earphone and the auxiliary earphone is switched, the main earphone and the auxiliary earphone carry out data sending and receiving, and after a first preset time interval, the communication of the main earphone and the intelligent equipment is switched.
The main and auxiliary earphone communication method of the TWS earphone according to the embodiment of the invention at least has the following beneficial effects: the embodiment of the invention realizes the left and right ear communication on the premise of not influencing the communication between the intelligent equipment and the earphone by utilizing the idle time slot, thereby improving the communication performance of the TWS earphone. The embodiment of the invention can also avoid massive retransmission of the intelligent equipment, reduce power consumption and avoid the risk of wire breakage.
According to some embodiments of the invention, the idle time slot is a communication time slot excluding necessary communication time slots in a communication window when the smart device communicates with the primary earpiece; the necessary communication slots include communication slots for transmitting necessary audio and control data between the smart device and the master earpiece.
According to some embodiments of the invention, switching to primary-secondary headset communication during an idle timeslot when the primary headset is in communication with the smart device comprises: and the main earphone is communicated with the intelligent equipment, and after a second preset time interval in a receiving window of the main earphone, the main earphone is switched to the main earphone and the auxiliary earphone for communication when not receiving data.
According to some embodiments of the invention, the switching to primary-secondary headset communication comprises: in a communication window between a main earphone and the intelligent equipment, if data of the intelligent equipment is not received after 100us passes through a receiving window of the main earphone, the communication is switched to the main earphone and the auxiliary earphone, the communication window of the main earphone and the auxiliary earphone is 1180us, and in the communication window of the main earphone and the auxiliary earphone, the main earphone and the auxiliary earphone complete one-time operation of sending data and receiving data.
According to some embodiments of the invention, switching to primary-secondary headset communication during an idle timeslot when the primary headset is in communication with the smart device comprises: the main earphone is communicated with the intelligent equipment, the main earphone receives a data packet of the intelligent equipment, whether the data packet contains valid data or not is determined, and if not, the main earphone is switched to the main earphone and the auxiliary earphone for communication.
According to some embodiments of the invention, if the data packet contains valid data, the secondary earpiece processes the data packet, and the primary earpiece processes the data packet and sends a reply to the smart device in a next send window in which the data packet is received.
According to some embodiments of the invention, the method for determining whether the data packet is valid data comprises: and determining whether the data packet contains valid data or not through the Access code in the data packet.
A TWS headset according to an embodiment of the second aspect of the invention comprises a primary headset and a secondary headset, the primary headset comprising, using the method of any one of the embodiments of the first aspect of the invention: the first communication unit is used for carrying out Bluetooth communication with intelligent equipment or the auxiliary earphone respectively; the first communication switching control unit is used for switching to the communication of the main earphone and the auxiliary earphone in the idle time slot of the communication between the main earphone and the intelligent equipment and switching to the communication between the main earphone and the auxiliary earphone after the communication between the main earphone and the auxiliary earphone is switched to the communication between the main earphone and the auxiliary earphone through a first preset time interval; the sub-earphone includes: the second communication unit is used for monitoring the intelligent equipment or carrying out Bluetooth communication with the main earphone; and the second communication switching control unit is used for switching to the communication of the main earphone and the auxiliary earphone in an idle time slot of the communication between the main earphone and the intelligent equipment and switching to and monitoring the intelligent equipment after the communication between the main earphone and the auxiliary earphone is switched to the communication between the main earphone and the auxiliary earphone through a first preset time interval.
The TWS earphone provided by the embodiment of the invention at least has the following beneficial effects: the embodiment of the invention realizes the left and right ear communication on the premise of not influencing the communication between the intelligent equipment and the earphone by utilizing the idle time slot, thereby improving the communication performance of the TWS earphone. The embodiment of the invention can also avoid massive retransmission of the intelligent equipment, reduce power consumption and avoid the risk of wire breakage.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic diagram of a TWS headset and handset communication connection.
Fig. 2 is a typical timing diagram for handset and left ear communication and left and right ear communication.
Fig. 3 is a timing diagram of TWS headset primary and secondary ear communication according to an embodiment of the invention.
Fig. 4 is a left ear communication flow chart of the embodiment of the invention.
Fig. 5 is a right ear communication flow diagram of an embodiment of the present invention.
Fig. 6 is a block schematic diagram of modules of a TWS headset of an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and more than, less than, more than, etc. are understood as excluding the present number, and more than, less than, etc. are understood as including the present number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
Referring to fig. 3, the method of an embodiment of the present invention includes the steps of: the method comprises the following steps that a main earphone (a left earphone) is connected with an intelligent device (a mobile phone) in a Bluetooth mode, the main earphone is connected with an auxiliary earphone (a right earphone) in a main-auxiliary mode, and the auxiliary earphone monitors data communicated with the intelligent device through receiving aerial signals; switching to the communication of the main earphone and the auxiliary earphone in an idle time slot of the communication of the main earphone and the intelligent equipment; after the communication of the main earphone and the auxiliary earphone is switched, the main earphone and the auxiliary earphone transmit and receive data, and after a first preset time interval, the communication of the main earphone and the intelligent equipment is switched.
In this embodiment, the idle time slot includes a communication time slot except necessary audio and control data between the smart device and the host headset in a scenario of bluetooth music, bluetooth call, and the like, and the smart device may not send a data packet and may send a POLL packet without valid data.
In some embodiments, switching to primary-secondary headset communication during an idle time slot when the primary headset is in communication with the smart device includes: and the main earphone is communicated with the intelligent equipment, and after a second preset time interval passes through a receiving window of the main earphone, the main earphone is switched to the main earphone and the auxiliary earphone for communication when not receiving data.
In some embodiments, switching to primary-secondary headset communication includes: in the communication window of the main earphone and the intelligent equipment, data of the intelligent equipment is not received after 100us passes through the receiving window of the main earphone, the communication is switched to the main earphone and the auxiliary earphone, the communication window of the main earphone and the auxiliary earphone is 1180us, and the main earphone and the auxiliary earphone complete one-time data sending and receiving operation in the communication window of the main earphone and the auxiliary earphone.
In some embodiments, switching to primary-secondary headset communication during an idle time slot when the primary headset is in communication with the smart device includes: the main earphone is communicated with the intelligent equipment, the main earphone receives a data packet of the intelligent equipment, whether the data packet contains effective data or not is determined, and if not, the main earphone is switched to the main earphone and the auxiliary earphone for communication.
In some embodiments, if the data packet contains valid data, the sub-headset processes the data packet, the main headset processes the data packet, and the smart device sends a reply in the next sending window in which the data packet is received.
In some embodiments, the method for determining whether the data packet is valid data comprises: and determining whether the data packet contains valid data or not through the Access code in the data packet.
Referring to fig. 4, in an embodiment, a communication flow of the left headset as the master headset includes: the left earphone is communicated with the Bluetooth of the mobile phone to receive the Bluetooth packet of the mobile phone; judging whether the received mobile phone Bluetooth packet is valid data or not, if so, processing the received mobile phone data by the left ear, replying the mobile phone in the next received sending window and returning to the step of receiving the mobile phone Bluetooth packet; if the received Bluetooth packet of the mobile phone is not valid data, switching to left and right ear communication after 100us and sending a data packet to a right earphone, receiving right ear data in a next receiving window, processing the received right ear data, and then returning to the step of receiving the Bluetooth packet of the mobile phone by the left earphone.
Referring to fig. 5, in an embodiment, a communication flow of the right earphone as the secondary earphone includes: the right earphone monitors the Bluetooth packet of the mobile phone, judges whether the monitored Bluetooth packet of the mobile phone is valid data or not, and if so, the right earphone processes the received mobile phone data and returns to the step of monitoring the Bluetooth packet of the mobile phone; if not, switching to left-ear and right-ear communication after 100us, and receiving left-ear data; and the right ear processes the received left ear data, replies to the left ear in the next receiving window, and returns to the step of monitoring the mobile phone Bluetooth packet.
Referring to fig. 6, an embodiment of the present invention further provides a TWS headset, which is used to implement the above-mentioned left and right headset bluetooth communication method. The TWS headset includes a primary headset and a secondary headset, the primary headset including: the first communication unit is used for carrying out Bluetooth communication with the intelligent equipment or the auxiliary earphone respectively; the first communication switching control unit is used for switching to the communication of the main earphone and the auxiliary earphone in an idle time slot of the communication between the main earphone and the intelligent equipment and switching to the communication between the main earphone and the auxiliary earphone after the communication between the main earphone and the auxiliary earphone is switched to the communication between the intelligent equipment and the intelligent equipment through a first preset time interval; the sub-earphone includes: the second communication unit is used for monitoring the intelligent equipment or carrying out Bluetooth communication with the main earphone; and the second communication switching control unit is used for switching to the communication of the main earphone and the auxiliary earphone in an idle time slot when the main earphone is communicated with the intelligent equipment, and switching to the intelligent equipment for monitoring after the communication of the main earphone and the auxiliary earphone is switched to the communication of the main earphone and the auxiliary earphone through a first preset time interval.
Although specific embodiments have been described herein, those of ordinary skill in the art will recognize that many other modifications or alternative embodiments are equally within the scope of this disclosure. For example, any of the functions and/or processing capabilities described in connection with a particular device or component may be performed by any other device or component. In addition, while various illustrative implementations and architectures have been described in accordance with embodiments of the present disclosure, those of ordinary skill in the art will recognize that many other modifications of the illustrative implementations and architectures described herein are also within the scope of the present disclosure.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (8)
1. A main earphone and auxiliary earphone communication method of a TWS earphone is characterized by comprising the following steps:
the method comprises the steps that a Bluetooth connection is established between a main earphone and intelligent equipment, a main-auxiliary connection is established between the main earphone and an auxiliary earphone, and the auxiliary earphone monitors data communicated between the main earphone and the intelligent equipment by receiving aerial signals;
switching to the communication of the main earphone and the auxiliary earphone in an idle time slot of the communication between the main earphone and the intelligent equipment;
after the communication of the main earphone and the auxiliary earphone is switched, the main earphone and the auxiliary earphone carry out data sending and receiving, and after a first preset time interval, the communication of the main earphone and the intelligent equipment is switched.
2. The primary-secondary headset communication method of a TWS headset of claim 1, wherein the idle time slot is a communication time slot excluding necessary communication time slots in a communication window when the smart device communicates with the primary headset; the necessary communication slots include communication slots for transmitting necessary audio and control data between the smart device and the master earpiece.
3. The primary-secondary headset communication method of a TWS headset of claim 1, wherein switching to primary-secondary headset communication during an idle time slot when the primary headset is in communication with the smart device comprises:
and the main earphone is communicated with the intelligent equipment, and after a second preset time interval in a receiving window of the main earphone, the main earphone is switched to the main earphone and the auxiliary earphone for communication when not receiving data.
4. The primary-secondary headset communication method of a TWS headset of claim 3, wherein the switching to primary-secondary headset communication includes:
in a communication window between a main earphone and the intelligent equipment, if data of the intelligent equipment is not received after 100us passes through a receiving window of the main earphone, the communication is switched to the main earphone and the auxiliary earphone, the communication window of the main earphone and the auxiliary earphone is 1180us, and in the communication window of the main earphone and the auxiliary earphone, the main earphone and the auxiliary earphone complete one-time operation of sending data and receiving data.
5. The primary-secondary headset communication method of a TWS headset of claim 1, wherein switching to primary-secondary headset communication during an idle time slot when the primary headset is in communication with the smart device comprises:
the main earphone is communicated with the intelligent equipment, the main earphone receives a data packet of the intelligent equipment, whether the data packet contains valid data or not is determined, and if not, the main earphone is switched to the main earphone and the auxiliary earphone for communication.
6. The primary-secondary headset communication method of claim 5, wherein if the data packet contains valid data, the secondary headset processes the data packet, and the primary headset processes the data packet and sends a reply to the smart device in a next send window in which the data packet is received.
7. The primary-secondary headset communication method of a TWS headset of claim 5, wherein the method of determining whether the data packet is valid data comprises: and determining whether the data packet contains valid data or not through the Access code in the data packet.
8. A TWS headset comprising a primary headset and a secondary headset using the method of any of claims 1 to 7,
the main earphone includes:
the first communication unit is used for carrying out Bluetooth communication with intelligent equipment or the auxiliary earphone respectively;
the first communication switching control unit is used for switching to the communication of the main earphone and the auxiliary earphone in the idle time slot of the communication between the main earphone and the intelligent equipment and switching to the communication between the main earphone and the auxiliary earphone after the communication between the main earphone and the auxiliary earphone is switched to the communication between the main earphone and the auxiliary earphone through a first preset time interval;
the sub-earphone includes:
the second communication unit is used for monitoring the intelligent equipment or carrying out Bluetooth communication with the main earphone;
and the second communication switching control unit is used for switching to the communication of the main earphone and the auxiliary earphone in an idle time slot of the communication between the main earphone and the intelligent equipment and switching to and monitoring the intelligent equipment after the communication between the main earphone and the auxiliary earphone is switched to the communication between the main earphone and the auxiliary earphone through a first preset time interval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111502726.1A CN114449661A (en) | 2021-12-09 | 2021-12-09 | Main and auxiliary earphone communication method of TWS earphone and TWS earphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111502726.1A CN114449661A (en) | 2021-12-09 | 2021-12-09 | Main and auxiliary earphone communication method of TWS earphone and TWS earphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114449661A true CN114449661A (en) | 2022-05-06 |
Family
ID=81364667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111502726.1A Pending CN114449661A (en) | 2021-12-09 | 2021-12-09 | Main and auxiliary earphone communication method of TWS earphone and TWS earphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114449661A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114710771A (en) * | 2022-06-07 | 2022-07-05 | 成都市安比科技有限公司 | Link switching method and device based on TWS (two way traffic system) and Bluetooth communication system |
-
2021
- 2021-12-09 CN CN202111502726.1A patent/CN114449661A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114710771A (en) * | 2022-06-07 | 2022-07-05 | 成都市安比科技有限公司 | Link switching method and device based on TWS (two way traffic system) and Bluetooth communication system |
| CN114710771B (en) * | 2022-06-07 | 2022-08-23 | 成都市安比科技有限公司 | Link switching method and device based on TWS (two way communication system) and Bluetooth communication system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110995326B (en) | Communication method of wireless earphone, wireless earphone and wireless earplug | |
| US5404392A (en) | Digital Cellular Overlay Network (DCON) | |
| US9094944B2 (en) | Dynamic transmission protection in the presence of multiple modulation schemes | |
| US10390205B2 (en) | Bluetooth® connection setup and Bluetooth® device | |
| US20210360690A1 (en) | Channel Access Method and Apparatus | |
| MXPA04007545A (en) | Minimising interference by time division multiplexing of ieee 802.11 and cdma transmissions. | |
| JPS619039A (en) | Multi-channel access radio system | |
| EP1875753A1 (en) | Method and system for bluetooth and wireless local area network coexistence | |
| JP2003037529A (en) | Radio communication method and device for avoiding mutual interference between radio communications systems | |
| WO2009151291A2 (en) | Apparatus and method for transmitting and receiving data | |
| CN110234100B (en) | Wireless data transmission method, equipment and system | |
| JP2012165043A (en) | Radio communication device | |
| US6002677A (en) | Method and apparatus for transmitting high rate packet data over under-utilized virtual circuits | |
| US20080026696A1 (en) | Method and system for transmitting voice data by using wireless LAN and bluetooth | |
| US20230074888A1 (en) | Rapid bluetooth networking method and system and bluetooth earphones | |
| US20110032916A1 (en) | Wireless communication apparatus and method using the same | |
| CN114449661A (en) | Main and auxiliary earphone communication method of TWS earphone and TWS earphone | |
| US20180084531A1 (en) | Method and circuitry for wireless communications between different networks | |
| EP1838027B1 (en) | Method and apparatus for de-activating hybrid automatic repeat request process in a wireless communications system | |
| US10091742B2 (en) | Wireless communication device | |
| CN111107460B (en) | Wireless earphone communication method and wireless earphone | |
| US8830929B2 (en) | Intentional idle gaps in coexisting wireless networks | |
| EP3897070A1 (en) | 4g automatic link establishment (ale) with improved two-way link quality analysis (lqa) exchange | |
| CN1077370C (en) | Random access control for CDMA network | |
| CA2434355C (en) | Method for avoiding interference in cellular cdma radio networks caused by defective mobile stations |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |