SERVICE ADVERTISEMENT MESSAGE TRANSMISSION METHOD AND DEVICE

• US 20160037483A1
• Filed: 10/13/2015
• Published: 02/04/2016
• Est. Priority Date: 05/15/2013
• Status: Active Grant

• Current Assignee: Huawei Device Company Limited (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Device Company Limited (Huawei Investment & Holding Co., Ltd.)
• Inventors: DU, Zhenguo, CHEN, Ji
• Granted Patent: US 10,004,059 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04B 17/318 Received signal strength
• CPC Class Codes: H04L 67/51 Discovery or management thereof, e.g. service location protocol [SLP] or web services
• CPC Class Codes: H04W 4/06 Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
• CPC Class Codes: H04W 4/21 for social networking applications
• CPC Class Codes: H04W 68/00 User notification, e.g. alerting and paging, for incoming communication, change of service or the like
• CPC Class Codes: H04W 68/10 using simulcast notification
• CPC Class Codes: H04W 76/14 Direct-mode setup
• CPC Class Codes: H04W 76/40 for selective distribution or broadcast
• CPC Class Codes: H04W 8/005 Discovery of network devices, e.g. terminals

Abstract

Embodiments of the present invention disclose a service advertisement message transmission method and device. The method in the embodiments of the present invention includes: generating, by a first device, a first service advertisement message, where the first service advertisement message includes first service information of the first device and second service information of a second device; the second service information is obtained by the first device from a received message sent by the second device; the first service information is used to enable a device in a communication range of the first device to learn service information of the first device; and the second service information is used to enable a device in a communication range of the second device to learn service information of the second device; and sending, by the first device, the first service advertisement message.

Claims

1. A service advertisement message transmission method, comprising:

generating, by a first device, a first service advertisement message, wherein the first service advertisement message comprises first service information of the first device and second service information of at least one second device;

the second service information is obtained by the first device from a received message sent by the at least one second device;

the first service information is used to enable a device in a communication range of the first device to learn service information of the first device; and

the second service information is used to enable a device in a communication range of the at least one second device to learn service information of the at least one second device; and

sending, by the first device, the first service advertisement message.

2. The method according to claim 1, before the generating a first service advertisement message, comprising:

receiving a second service advertisement message sent by the at least one second device, wherein the second service advertisement message comprises the second service information; and

adding the second service information to a carrying candidate list, wherein the carrying candidate list is used to store non-local service information that can be carried in the first service advertisement message for sending.

3. The method according to claim 1, wherein:

the first service information comprises a service identifier and operating regularity information of the first device;

the second service information comprises a service identifier and operating regularity information of the at least one second device; and

the operating regularity information comprises time information and/or channel information.

4. The method according to claim 3, wherein:

the first service information further comprises a service information validity period and/or device address information of the first device; and

the second service information further comprises a service information validity period and/or device address information of the at least one second device.

5. The method according to claim 2, wherein if the second service advertisement message comprises service information of multiple devices, the generating a first service advertisement message comprises:

extracting only the second service information of the at least one second device from the second service advertisement message, and storing the second service information in the carrying candidate list of the first device; and

selecting N pieces of second service information from the carrying candidate list of the first device from the carrying candidate list of the first device to generate the first service advertisement message, wherein N is an integer greater than zero;

N is less than or equal to a quantity of second service information stored in the carrying candidate list; and

a total data amount of the N pieces of second service information is smaller than a message packet capacity of the first service advertisement message.

6. The method according to claim 1, before the generating a first service advertisement message, further comprising:

determining, according to transceiving status of the second service advertisement message, whether the first device is in a dense environment;

if the first device is in a dense environment, triggering the step of generating a first service advertisement message; and

if the first device is not in a dense environment, sending a first service advertisement message that does not carry the second service information.

7. The method according to claim 6, wherein the determining, according to transceiving status of the second service advertisement message, whether the first device is in a dense environment comprises:

in predefined time T₀, separately collecting statistics on the quantity V_sparse of received service advertisement messages in a sparse mode and the quantity V_dense of received service advertisement messages in a dense mode, wherein when α

₁V_sparse α

₂V_dense>

thr₁, the first device is considered to be in a dense environment, wherein α

₁ and α

2 are respectively weighting coefficients of V_sparse and V_dense, and thr₁ is a first dense environment threshold;

or when (α

₁V_sparseT₁+α

₂V_dense T₂)/T₀>

thr₂, the first device is considered to be in a dense environment, wherein α

₁ and α

₂ are respectively weighting coefficients of V_sparse and V_dense, and thr₂ is a second dense environment threshold;

or

collecting statistics on an average value T_A of waiting time for sending the first service advertisement message, wherein if T_A>

thr₃, the first device is considered to be in a dense environment;

the waiting time is time needed by the first device from monitoring a channel to successfully sending the first service advertisement message; and

thr₃ is a third dense environment threshold.

8. The method according to claim 2, after the receiving a second service advertisement message sent by the at least one second device, further comprising:

acquiring a received signal strength indicator RSSI of the second service advertisement message, wherein

the adding the second service information to a carrying candidate list is;

if the RSSI is greater than a first RSSI threshold, adding the second service information to the carrying candidate list of the first device.

9. The method according to claim 2, wherein if the second service advertisement message further carries third service information, the method further comprises:

determining whether the third service information is a service needed by the first device, and if the third service information is a service needed by the first device, returning a service response message to a third device that generates the third service information.

10. The method according to claim 9, before the returning a service response message to a third device that generates the third service information, further comprising:

acquiring the RSSI of the second service advertisement message; and

if the RSSI is greater than a second RSSI threshold, triggering the step of returning a service response message to a third device that generates the third service information.

11. The method according to claim 9, wherein the returning a service response message to a third device that generates the third service information is:

sending the service response message to the third device at first power, wherein the first power is higher than second power used by the at least one second device to send the second service advertisement message.

12. A service advertisement message transmission device, wherein the device is a first device, comprising:

a message generating unit, configured to generate a first service advertisement message, wherein the first service advertisement message comprises first service information of the first device and second service information of at least one second device;

the second service information is obtained by the first device from a received message sent by the at least one second device;

the first service information is used to enable a device in a communication range of the first device to learn service information of the first device; and

the second service information is used to enable a device in a communication range of the at least one second device to learn service information of the at least one second device; and

a message sending unit, configured to send the first service advertisement message.

13. The device according to claim 12, wherein the device further comprises:

a message receiving unit, configured to;

before the first service advertisement message is generated, receive a second service advertisement message sent by the at least one second device, wherein the second service advertisement message comprises the second service information; and

a storing unit, configured to add the second service information to a carrying candidate list, wherein the carrying candidate list stores non-local service information that can be carried in the first service advertisement message for sending.

14. The device according to claim 13, wherein the message sending unit comprises:

an information extracting module, configured to extract only the second service information of the at least one second device from the second service advertisement message, and store the second service information in a carrying candidate list of the first device; and

an information selecting module, configured to select N pieces of second service information from the carrying candidate list of the first device to generate the first service advertisement message, wherein N is an integer greater than zero;

N is less than or equal to a quantity of second service information in the carrying candidate list; and

a total data amount of the N pieces of second service information is smaller than a message packet capacity of the first service advertisement message.

15. The device according to claim 12 wherein the device further comprises:

an environment determining unit, configured to determine, according to transceiving status of the first service advertisement message, whether the first device is in a dense environment;

if the first device is in a dense environment, trigger the message generating unit to generate the first service advertisement message; and

if the first device is not in a dense environment, trigger the message sending unit to send a first service advertisement message that does not carry the second service information.

16. The device according to claim 15, wherein the environment determining unit comprises:

a first determining module, configured to;

in predefined time T₀, separately collect statistics on a quantity V_sparse of received service advertisement messages in a sparse mode and a quantity V_dense of received service advertisement messages in a dense mode, wherein when α

₁V_sparse α

₂V_dense thr₁, the first device is considered to be in a dense environment, wherein α

₁ and α

₂ are respectively weighting coefficients of V_sparse and V_dense, and thr₁ is a first dense environment threshold;

or

a second determining module, configured to;

in predefined time T₀, separately collect statistics on a quantity V_sparse of received service advertisement messages in a sparse mode and a quantity V_dense of received service advertisement messages in a dense mode, wherein when (α

₁V_sparseT₁+α

₂V_dense T₂)/T₀>

thr₂, the first device is considered to be in a dense environment, wherein α

₁ and α

₂ are respectively weighting coefficients of V_sparse and V_dense, and thr₂ is a second dense environment threshold;

or

a third determining module, configured to;

in predefined time, collect statistics about an average value TA of waiting time for sending the first service advertisement message, or calculate an average value T_A of several times of waiting time for sending the first service advertisement, message, wherein if T_A>

thr₃, the first device is considered to be in a dense environment;

the waiting time is time needed by the first device from monitoring a channel to successfully sending the first service advertisement message; and

thr₃ is a third dense environment threshold.

17. The device according to claim 13, wherein the device further comprises:

a signal acquiring unit, configured to acquire an RSSI of the second service advertisement message, wherein

the storing unit is configured to;

if the RSSI is greater than a first RSSI threshold, add the second service information to the carrying candidate list of the first device.

18. The device according to claim 13, wherein the device further comprises:

a service determining unit, configured to;

if the second service advertisement message further carries third service information, determine whether the third service information is a service needed by the first device, wherein

the message sending unit is further configured to;

when a result of the determining of the service determining unit is yes, return a service response message to a third device that generates the third service information.

19. The device according to claim 18, wherein the device further comprises:

a response determining unit, configured to;

if the RSSI is greater than a second RSSI threshold, trigger the message sending unit to return the service response message to the device that generates the third service information.

20. The device according to claim 18, wherein the message sending unit is configured to send, at first power, the service response message to the third device that generates the third service information corresponding to the third service information, wherein the first power is higher than second power used by the at least one second device to send the second service advertisement message.