Patents by Inventor Tahir Shamim
Tahir Shamim has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 11516822Abstract: Methods and apparatuses are presented to facilitate coexistence between multiple wireless communication protocols implemented by a wireless communication device, using a shared antenna, e.g., due to limitations resulting from a small form factor of the wireless communication device. The wireless communication device may determine whether communications according to a second protocol are causing performance of communications according to a first protocol to fall below a threshold level. If so, the wireless communication device may operate in a mode that favors communications according to the first protocol. If not, the wireless communication device may operate in a mode that favors communications according to the second protocol. For example, the mode that favors communications according to the first protocol may include temporarily implementing operations to remedy the poor performance of the communications according to the first, e.g.Type: GrantFiled: September 10, 2019Date of Patent: November 29, 2022Assignee: Apple Inc.Inventors: Camille Chen, Akshay Tumkur Rajshekhar, Arjun Dheer, Gordon Kin, Sanjay Mani, Yang Yu, Tahir Shamim
-
Publication number: 20210076396Abstract: Methods and apparatuses are presented to facilitate coexistence between multiple wireless communication protocols implemented by a wireless communication device, using a shared antenna, e.g., due to limitations resulting from a small form factor of the wireless communication device. The wireless communication device may determine whether communications according to a second protocol are causing performance of communications according to a first protocol to fall below a threshold level. If so, the wireless communication device may operate in a mode that favors communications according to the first protocol. If not, the wireless communication device may operate in a mode that favors communications according to the second protocol. For example, the mode that favors communications according to the first protocol may include temporarily implementing operations to remedy the poor performance of the communications according to the first, e.g.Type: ApplicationFiled: September 10, 2019Publication date: March 11, 2021Inventors: Camille Chen, Akshay Tumkur Rajshekhar, Arjun Dheer, Gordon Kin, Sanjay Mani, Yang Yu, Tahir Shamim
-
Patent number: 10547558Abstract: Methods, systems and apparatus for a user equipment to implement a dynamic discard timer. The user equipment may generate a packet for transmission and store the packet in a buffer of the user equipment. The user equipment may then generate a timeout value for a discard timer for the buffer, where the discard timer discards the packet from the buffer when the timeout value is reached. After a predetermined amount of time, the user equipment may determine whether the packet has been discarded from the buffer and, when it is determined that the packet has not been discarded from the buffer, update the timeout value.Type: GrantFiled: May 31, 2017Date of Patent: January 28, 2020Assignee: Apple Inc.Inventors: An Chan, Soo Young Lee, Abhishek A. Bhonsle, Anish K. Goyal, Madhusudan Chaudhary, Wanping Zhang, Tahir Shamim, Raghuveer Mallikarjunan
-
Patent number: 10512038Abstract: An accessory wireless device partakes in a data session with a remote device. The data session may be a voice call or other service. To preserve the battery power of the accessory wireless device, the accessory wireless device opportunistically offloads medium-to-long range radio transmission and reception tasks to the companion wireless device while maintaining call continuity. The accessory wireless device and the companion wireless device communicate through a local connection. In one embodiment, the accessory wireless device pushes a wireless wide area network (WWAN) connection to the companion device by sharing selected security and network information with the companion wireless device. When the accessory device and/or the companion device determine that the local connection may not be sustainable, the accessory device pulls the WWAN connection of the companion device back to itself.Type: GrantFiled: July 2, 2018Date of Patent: December 17, 2019Assignee: Apple Inc.Inventors: Li Su, Tahir Shamim, Jianxiong Shi, Wanping Zhang
-
Patent number: 10182337Abstract: This disclosure relates to out of service recovery techniques for an accessory device. According to some embodiments, the accessory device may receive cellular communication system selection information from a paired device. The accessory device may store the communication system selection information. At some point, it may be determined that the accessory device has lost cellular communication service. The accessory device may perform a cellular communication service scan utilizing the system selection information received from the paired device along with its own historical information and location based frequency lists.Type: GrantFiled: February 12, 2018Date of Patent: January 15, 2019Assignee: Apple Inc.Inventors: Sindhu Sivasankaran Nair, Tahir Shamim, Gaurav Arya, Thanigaivelu Elangovan, Lakshmi N. Kavuri
-
Publication number: 20180351873Abstract: Methods, systems and apparatus for a user equipment to implement a dynamic discard timer. The user equipment may generate a packet for transmission and store the packet in a buffer of the user equipment. The user equipment may then generate a timeout value for a discard timer for the buffer, where the discard timer discards the packet from the buffer when the timeout value is reached. After a predetermined amount of time, the user equipment may determine whether the packet has been discarded from the buffer and, when it is determined that the packet has not been discarded from the buffer, update the timeout value.Type: ApplicationFiled: May 31, 2017Publication date: December 6, 2018Inventors: An CHAN, Soo Young LEE, Abhishek A. BHONSLE, Anish K. GOYAL, Madhusudan CHAUDHARY, Wanping ZHANG, Tahir SHAMIM, Raghuveer MALLIKARJUNAN
-
Publication number: 20180317167Abstract: An accessory wireless device partakes in a data session with a remote device. The data session may be a voice call or other service. To preserve the battery power of the accessory wireless device, the accessory wireless device opportunistically offloads medium-to-long range radio transmission and reception tasks to the companion wireless device while maintaining call continuity. The accessory wireless device and the companion wireless device communicate through a local connection. In one embodiment, the accessory wireless device pushes a wireless wide area network (WWAN) connection to the companion device by sharing selected security and network information with the companion wireless device. When the accessory device and/or the companion device determine that the local connection may not be sustainable, the accessory device pulls the WWAN connection of the companion device back to itself.Type: ApplicationFiled: July 2, 2018Publication date: November 1, 2018Inventors: Li SU, Tahir SHAMIM, Jianxiong SHI, Wanping ZHANG
-
Patent number: 10015740Abstract: An accessory wireless device partakes in a data session with a remote device. The data session may be a voice call or other service. To preserve the battery power of the accessory wireless device, the accessory wireless device opportunistically offloads medium-to-long range radio transmission and reception tasks to the companion wireless device while maintaining call continuity. The accessory wireless device and the companion wireless device communicate through a local connection. In one embodiment, the accessory wireless device pushes a wireless wide area network (WWAN) connection to the companion device by sharing selected security and network information with the companion wireless device. When the accessory device and/or the companion device determine that the local connection may not be sustainable, the accessory device pulls the WWAN connection of the companion device back to itself.Type: GrantFiled: September 23, 2016Date of Patent: July 3, 2018Assignee: Apple Inc.Inventors: Li Su, Tahir Shamim, Jianxiong Shi, Wanping Zhang
-
Publication number: 20180167800Abstract: This disclosure relates to out of service recovery techniques for an accessory device. According to some embodiments, the accessory device may receive cellular communication system selection information from a paired device. The accessory device may store the communication system selection information. At some point, it may be determined that the accessory device has lost cellular communication service. The accessory device may perform a cellular communication service scan utilizing the system selection information received from the paired device along with its own historical information and location based frequency lists.Type: ApplicationFiled: February 12, 2018Publication date: June 14, 2018Inventors: Sindhu Sivasankaran Nair, Tahir Shamim, Gaurav Arya, Thanigaivelu Elangovan, Lakshmi N. Kavuri
-
Patent number: 9930717Abstract: This disclosure relates to out of service recovery techniques for an accessory device. According to some embodiments, the accessory device may receive cellular communication system selection information from a paired device. The accessory device may store the communication system selection information. At some point, it may be determined that the accessory device has lost cellular communication service. The accessory device may perform a cellular communication service scan utilizing the system selection information received from the paired device along with its own historical information and location based frequency lists.Type: GrantFiled: June 6, 2016Date of Patent: March 27, 2018Assignee: Apple Inc.Inventors: Sindhu Sivasankaran Nair, Tahir Shamim, Gaurav Arya, Thanigaivelu Elangovan, Lakshmi N. Kavuri
-
Publication number: 20170353990Abstract: This disclosure relates to out of service recovery techniques for an accessory device. According to some embodiments, the accessory device may receive cellular communication system selection information from a paired device. The accessory device may store the communication system selection information. At some point, it may be determined that the accessory device has lost cellular communication service. The accessory device may perform a cellular communication service scan utilizing the system selection information received from the paired device along with its own historical information and location based frequency lists.Type: ApplicationFiled: June 6, 2016Publication date: December 7, 2017Inventors: Sindhu Sivasankaran Nair, Tahir Shamim, Gaurav Arya, Thanigaivelu Elangovan, Lakshmi N. Kavuri
-
Patent number: 9832811Abstract: Methods and apparatus to reduce power consumption in user equipment (UE) that operates in a connected discontinuous reception (C-DRX) mode while in communication with wireless network are disclosed. A C-DRX warm-up period before the UE enters an on-duration is adjusted dynamically based on one or more factors including a time division duplex (TDD) uplink/downlink (UL/DL) subframe configuration, signal-to-noise ratio (SNR) values, and Doppler shift values. The C-DRX warm-up period is adapted based on the pattern of DL subframes in the UL/DL subframe configuration by including DL subframes that best contribute to channel estimation and adaptive tracking loops based on measured SNR and Doppler shift conditions. Favorable channel conditions, such as higher SNR and lower Doppler shift, can require fewer DL subframes and consequently shorter C-DRX warm-up periods. Higher Doppler shift values indicate more rapidly varying channel conditions and require DL subframes positioned closer to the start of the on-duration.Type: GrantFiled: March 28, 2016Date of Patent: November 28, 2017Assignee: Apple Inc.Inventors: Zhu Ji, Johnson O. Sebeni, Tahir Shamim
-
Publication number: 20170094597Abstract: An accessory wireless device partakes in a data session with a remote device. The data session may be a voice call or other service. To preserve the battery power of the accessory wireless device, the accessory wireless device opportunistically offloads medium-to-long range radio transmission and reception tasks to the companion wireless device while maintaining call continuity. The accessory wireless device and the companion wireless device communicate through a local connection. In one embodiment, the accessory wireless device pushes a wireless wide area network (WWAN) connection to the companion device by sharing selected security and network information with the companion wireless device. When the accessory device and/or the companion device determine that the local connection may not be sustainable, the accessory device pulls the WWAN connection of the companion device back to itself.Type: ApplicationFiled: September 23, 2016Publication date: March 30, 2017Inventors: Li SU, Tahir SHAMIM, Jianxiong SHI, Wanping ZHANG
-
Patent number: 9578572Abstract: A method for responding to a page message is provided. The method can include a wireless communication device receiving a page message on a first channel of a first network; suspending a connection to a second network in response to receiving the page message; transitioning to a second channel of the first network prior to responding to the page message; and sending a response message responsive to the page message on the second channel.Type: GrantFiled: February 1, 2016Date of Patent: February 21, 2017Inventors: Anish K. Goyal, Chandra S. Chetty, Tahir Shamim, Jianxiong Shi, Wanping Zhang
-
Publication number: 20160323930Abstract: Methods and apparatus to reduce power consumption in user equipment (UE) that operates in a connected discontinuous reception (C-DRX) mode while in communication with wireless network are disclosed. A C-DRX warm-up period before the UE enters an on-duration is adjusted dynamically based on one or more factors including a time division duplex (TDD) uplink/downlink (UL/DL) subframe configuration, signal-to-noise ratio (SNR) values, and Doppler shift values. The C-DRX warm-up period is adapted based on the pattern of DL subframes in the UL/DL subframe configuration by including DL subframes that best contribute to channel estimation and adaptive tracking loops based on measured SNR and Doppler shift conditions. Favorable channel conditions, such as higher SNR and lower Doppler shift, can require fewer DL subframes and consequently shorter C-DRX warm-up periods. Higher Doppler shift values indicate more rapidly varying channel conditions and require DL subframes positioned closer to the start of the on-duration.Type: ApplicationFiled: March 28, 2016Publication date: November 3, 2016Inventors: Zhu JI, Johnson O. SEBENI, Tahir SHAMIM
-
Publication number: 20160227456Abstract: A method for responding to a page message is provided. The method can include a wireless communication device receiving a page message on a first channel of a first network; suspending a connection to a second network in response to receiving the page message; transitioning to a second channel of the first network prior to responding to the page message; and sending a response message responsive to the page message on the second channel.Type: ApplicationFiled: February 1, 2016Publication date: August 4, 2016Inventors: Anish K. GOYAL, Chandra S. CHETTY, Tahir SHAMIM, Jianxiong SHI, Wanping ZHANG
-
Patent number: 9312943Abstract: A mobile wireless device adapts receive diversity during discontinuous reception based on downlink signal quality, page indicators and page messages. When the downlink signal quality exceeds a pre-determined threshold, the mobile wireless device decodes a page indicator channel through an initial antenna, and otherwise, decodes a paging channel through the initial antenna without decoding the page indicator channel. The mobile wireless device switches to decoding the paging channel through an alternate antenna when a page indicator decodes as an erasure. When a paging message received through a single antenna decodes with an incorrect error checking code, the mobile wireless devices enables receive diversity through multiple antennas for subsequent decoding. The mobile wireless device switches between single antenna reception and multiple antenna reception based on tracking multiple consecutive error checking code failures and successes.Type: GrantFiled: April 9, 2014Date of Patent: April 12, 2016Assignee: Apple Inc.Inventors: Syed A. Mujtaba, Xiaowen Wang, Young Jae Kim, Vinay R. Majjigi, Johnson O. Sebeni, Tahir Shamim, Karthik Anantharaman, Kee-Bong Song, Romain Trilling
-
Patent number: 9307467Abstract: A network reselection procedure, of a wireless communication device, that occurs following a network detachment event, such as a device sleep event or a device power savings mode event. The wireless communication device attempts to acquire a first wireless network to which the wireless communication device was most recently attached, immediately preceding the network detachment event. Then, in response to an unsuccessful acquisition of the first wireless network, the wireless communication device attempts an alternate network acquisition utilizing a Most Recently Used List (MRUL) that is stored at the wireless communication device and includes information about one or more frequency bands allocated to a primary service provider with which the wireless communication device is affiliated. After determining whether the alternate network acquisition attempt was successful, the wireless communication device attaches to a second network and stores information associated with the second network.Type: GrantFiled: August 28, 2013Date of Patent: April 5, 2016Assignee: Apple Inc.Inventors: Swaminathan Balakrishnan, Sarma V. Vangala, Wanping Zhang, Tahir Shamim, Sreevalsan Vallath
-
Patent number: 9301257Abstract: Methods and apparatus to reduce power consumption in user equipment (UE) that operates in a connected discontinuous reception (C-DRX) mode while in communication with wireless network are disclosed. A C-DRX warm-up period before the UE enters an on-duration is adjusted dynamically based on one or more factors including a time division duplex (TDD) uplink/downlink (UL/DL) subframe configuration, signal-to-noise ratio (SNR) values, and Doppler shift values. The C-DRX warm-up period is adapted based on the pattern of DL subframes in the UL/DL subframe configuration by including DL subframes that best contribute to channel estimation and adaptive tracking loops based on measured SNR and Doppler shift conditions. Favorable channel conditions, such as higher SNR and lower Doppler shift, can require fewer DL subframes and consequently shorter C-DRX warm-up periods. Higher Doppler shift values indicate more rapidly varying channel conditions and require DL subframes positioned closer to the start of the on-duration.Type: GrantFiled: May 15, 2014Date of Patent: March 29, 2016Assignee: Apple Inc.Inventors: Zhu Ji, Johnson O. Sebeni, Tahir Shamim
-
Patent number: 9271260Abstract: Enabling receive diversity based on detecting incorrect paging message length. A paging channel may be monitored. An indication of a paging message may be received on the paging channel. The paging message may include a message length field indicating a message length of the paging message. The message length field of the paging message may be received on the paging channel and decoded. It may be determined that the message length indicated in the message length field is incorrect. Receive diversity may be enabled for at least one subsequent paging occasion in response to determining that the message length indicated in the message length field is incorrect.Type: GrantFiled: October 24, 2013Date of Patent: February 23, 2016Assignee: Apple Inc.Inventors: Wael S. Barakat, Chandra S. Chetty, Johnson O. Sebeni, Raghuveer Mallikarjunan, Swaminathan Balakrishnan, Tahir Shamim