Patents by Inventor SaiRamesh Nammi

SaiRamesh Nammi 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: 10985809
    Abstract: The described technology is generally directed towards selecting a compression and/or quantization function for communicating data to and from an analog front end of a radio unit of a base station coupled to a digital baseband processor of a central unit of the base station. The compression function and/or quantization function can be adaptively and/or otherwise selected based on various criteria, such as the amount of data being transmitted, whether the data corresponds to reference signals or other data, the network architecture (e.g., digital beamforming or hybrid beamforming) in use, and so on.
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: April 20, 2021
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Aditya Chopra, Arunabha Ghosh, Milap Majmundar, SaiRamesh Nammi
  • Patent number: 10986645
    Abstract: In response to a metric (e.g., Doppler metric) exceeding a threshold, a network node device can facilitate transmitting a message instructing a user equipment to enable reception of transmission signals having a precoding rank value of one. The network node device can send a reference signal having the precoding rank value of one, and receive feedback from the user equipment comprising an indicator of channel quality. Optionally, in response to the metric exceeding a threshold, the network node device can facilitate transmitting a message instructing the user equipment to respond to a reference signal by providing feedback comprising a first indicator of rank having a value of one, and a second indicator of channel quality.
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: April 20, 2021
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: SaiRamesh Nammi, Arunabha Ghosh
  • Publication number: 20210111740
    Abstract: Aspects of the subject disclosure may include, for example, obtaining a received channel-encoded data block having information bits, a transmitted error-check value, and redundant code bits. The redundant code bits correspond to a channel code applied to the received channel-encoded data block prior to transmission via a communication channel. A channel code type is identified and responsive to it being systematic, the information bits and the transmitted error-check value are obtained without decoding according to the channel code. The received channel-encoded data block is checked according to the transmitted error-check value to obtain a result. Responsive to the result not indicating an error, extracting the information bits without decoding the received channel-encoded data block according to the channel code. Responsive to the result indicating an error, decoding the received channel-encoded data block according to the channel code to obtain decoded information bits. Other embodiments are disclosed.
    Type: Application
    Filed: October 15, 2019
    Publication date: April 15, 2021
    Applicant: AT&T Intellectual Property I, L.P.
    Inventors: Sairamesh Nammi, Arunabha Ghosh, Aditya Chopra, Saeed Ghassemzadeh
  • Patent number: 10979124
    Abstract: Selection of a forward error correction (FEC) code based on a wireless network characteristic is disclosed. The selection can facilitate changing from a first FEC code to a second FEC code in response to the wireless network characteristic changing. The selection can facilitate selection of FEC codes for user equipments (UEs) of a plurality of UEs, wherein the FEC codes can be the same or different FEC codes and can be employed among the plurality of UEs contemporaneously. Selected FEC codes can be applied to uplink and/or downlink channels. An embodiment can select an FEC code based on UE location. An embodiment can select an FEC code based on UE proximity to another device. An embodiment can select an FEC code based on channel signal to noise ratio. An embodiment can select an FEC code based on UE capability. An embodiment can determine a FEC code selection model.
    Type: Grant
    Filed: April 15, 2020
    Date of Patent: April 13, 2021
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventor: SaiRamesh Nammi
  • Patent number: 10980017
    Abstract: Improved downlink control information decoding is disclosed herein. Downlink control information, can be in different formats depending on the rank of transmission from the network to the user equipment device. For instance, if the transmission rank is between 1 and 4, the transmission will be a single codeword transmission, while a rank of 5-8 can have two codewords. The downlink control information can have a different format, or structure depending on the number of codewords. The user equipment device can predict whether a single codeword transmission or a multicode codeword transmission is more likely, and attempt to decode the downlink control information using the corresponding format. If the first pass is unsuccessful, the user equipment device can make a second pass decoding based on the alternate format of downlink control information.
    Type: Grant
    Filed: May 22, 2020
    Date of Patent: April 13, 2021
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventor: SaiRamesh Nammi
  • Patent number: 10979121
    Abstract: Facilitating channel state information determination using demodulation reference signals in advanced networks (e.g., 4G, 5G, and beyond) is provided herein. Operations of a system can comprise communicating first channel state information to a network device of a communication network. The first channel state information can be determined based on a received reference signal. The operations can also comprise determining second channel state information based on a scheduled demodulation reference signal received from the network device and comprising determining a precoding matrix index, rank information, and channel quality index information. Further, the operations can comprise communicating the second channel state information to the network device.
    Type: Grant
    Filed: February 5, 2020
    Date of Patent: April 13, 2021
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: SaiRamesh Nammi, Arunabha Ghosh
  • Patent number: 10972214
    Abstract: Various embodiments disclosed herein provide for facilitating scheduling of uplink data using demodulation reference signal and scheduled resources. According an embodiment, a system can comprise configuring a network device with a periodic rate of specified sounding reference signals with a periodicity using radio resource control signaling. The system can further facilitate estimating channel state information associated with a channel via which the network device communicates. The system can further facilitate transmitting an uplink grant with uplink transmission parameters to set up a physical uplink shared channel, wherein the uplink transmission parameters are determined based on the channel state information. The system can further facilitate estimating scheduling parameters based on a first estimation information associated with the physical uplink shared channel.
    Type: Grant
    Filed: June 14, 2019
    Date of Patent: April 6, 2021
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: SaiRamesh Nammi, Arunabha Ghosh
  • Patent number: 10972922
    Abstract: Various embodiments disclosed herein provide for multi-stage segmentation of downlink control information. Downlink control information can arrive at a user equipment on more than one channel, setting up and configuring data channels for different base stations, or data channels for the same base station but where the data channels are in different frequency domains or time domains. The downlink control information segmentation system disclosed herein can determine when downlink control information for the user equipment is common across a plurality of downlink control channels, and ensure that the downlink control information is sent just one time, to avoid redundant data transmissions and increased overhead.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: April 6, 2021
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Ralf Bendlin, Xiaoyi Wang, SaiRamesh Nammi
  • Publication number: 20210099328
    Abstract: An example method may include a processing system of a base station having a processor selecting a blank resource of a time and frequency resource grid of the base station for a transmission of a channel sounding waveform and transmitting the channel sounding waveform via the blank resource. Another example method may include a processing system of a channel sounding receiver receiving at a location, from a base station, a channel sounding waveform via a blank resource of a time and frequency resource grid of the base station, and measuring a channel property at the location based upon the channel sounding waveform.
    Type: Application
    Filed: September 30, 2019
    Publication date: April 1, 2021
    Inventors: Arunabha Ghosh, Ralf Bendlin, Saeed Ghassemzadeh, Thomas Novlan, Salam Akoum, SaiRamesh Nammi, Xiaoyi Wang
  • Patent number: 10966137
    Abstract: The described technology is generally directed towards adaptively changing which transmission scheme a user equipment is to use based on a Doppler metric (e.g. Doppler frequency) as evaluated against a threshold Doppler value. A network instructs a user equipment to use a Rank-1 precoder cycling transmission scheme if the Doppler metric of user equipment is above a threshold value, or to use a closed loop MIMO transmission scheme if the user equipment has a Doppler metric below the threshold value. The network can instruct the user equipment via a suitable message, or by switching off TPMI and notifying the user equipment thereof.
    Type: Grant
    Filed: August 4, 2020
    Date of Patent: March 30, 2021
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: SaiRamesh Nammi, Arunabha Ghosh
  • Patent number: 10958373
    Abstract: A joint channel estimation and data detection technique for decoding an uplink control channel using resource elements that are redundant in acknowledgement and negative acknowledgement uplink control channel transmissions is disclosed. To improve the performance of a decoder, channel estimation can be performed using reference signals (pilot symbols) to determine the characteristics of a channel at given locations within a subframe. For some uplink control channel formats, however, there aren't dedicated locations for reference signals/symbols, and so channel estimation is not performed.
    Type: Grant
    Filed: June 3, 2020
    Date of Patent: March 23, 2021
    Assignee: AT&T Intellectual Property I, L.P.
    Inventor: SaiRamesh Nammi
  • Publication number: 20210084519
    Abstract: Doppler metric data relating to a speed of a mobile device can be used by the mobile device to determine whether a speed threshold has been satisfied. If the speed threshold has been satisfied, then the mobile device can make a recommendation to a network node device to terminate closed-loop multiple input multiple output transmissions and to use a rank-1 precoder transmission. The network device can then decide how to proceed. Alternatively, the network device can change the transmission type based on a load threshold being determined to have been satisfied and the recommendation from the mobile device.
    Type: Application
    Filed: November 25, 2020
    Publication date: March 18, 2021
    Inventors: SaiRamesh Nammi, Arunabha Ghosh
  • Publication number: 20210083796
    Abstract: Facilitating improved performance based on inferred user equipment device speed for advanced networks (e.g., 4G, 5G, 6G, and beyond) is provided herein. Operations of a system can comprise estimating a speed of a user equipment device based on a number of times that a layer indicator associated with the user equipment device changes during a defined period of time. The operations can also comprise selecting a multiple input transmission mode for a transmission to the user equipment device based on the speed of the user equipment device, resulting in a selected transmission mode. A closed loop multiple input transmission mode can be selected in response to the speed being below a defined speed. Alternatively, an open loop multiple input transmission mode can be selected in response to the speed being above the defined speed.
    Type: Application
    Filed: November 25, 2020
    Publication date: March 18, 2021
    Inventor: SaiRamesh Nammi
  • Publication number: 20210083935
    Abstract: Based on the receipt of a demodulation reference signal from a user equipment, a determination can be made by the network node that a demodulation reference signal configuration is not suitable for the condition of a transmission link between the network node and the user equipment. In response to this determination, the demodulation reference signal configuration can be modified.
    Type: Application
    Filed: November 24, 2020
    Publication date: March 18, 2021
    Inventors: Arunabha Ghosh, SaiRamesh Nammi
  • Patent number: 10951349
    Abstract: The described technology is generally directed towards a network node in a radio communications system adaptively switching the modulation and coding scheme (MCS) table in use by user equipment. The network node evaluates performance data corresponding to one or more performance criteria to determine which MCS table to use. Non-limiting examples of performance data/performance criterion include the current transmission scheme, user equipment cell location, user equipment geometry, the number of transmit and/or receive antennas, the feedback reporting mode, the frequency band used in communications, network node performance, base station transmission power, user equipment deployment scenario, user equipment radio environment, user equipment recommendation, and the type of service being served by the base station. Any of the above performance data/performance criteria can be combined to adaptively make a determination and selection of which modulation and coding scheme table to use.
    Type: Grant
    Filed: January 7, 2020
    Date of Patent: March 16, 2021
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventor: SaiRamesh Nammi
  • Patent number: 10951280
    Abstract: A low complexity multiple input multiple output transmitter that transmits a single codeword per channel is disclosed herein. Instead of sending multiple codewords per channel for transmissions that support higher data layer transmissions, the transmitter can send single codewords over multiple channels in order to improve spectral efficiency over a range of signal to interference plus noise ratios. For instance, if a downlink transmission to a user equipment (UE) has a rank of 4, capable of supporting 4 data layers, instead of sending 2 or more codewords over a single downlink control channel, the transmitter can schedule multiple control channels and transmit a single codeword per channel. The transmitter can also include in the signaling to the UE that the multi-codewords are included in multiple downlink control channels.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: March 16, 2021
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: SaiRamesh Nammi, Arunabha Ghosh
  • Patent number: 10951281
    Abstract: Aspects of the subject disclosure can include, for example, a first logical codeword is associated with multiple layers of a MIMO system to obtain a logical codeword mapping. The first logical codeword is associated with a hybrid automatic receive request (HARQ) process identifier and based on a first number of channel-encoded codewords of a first number of transport data blocks. In response to detection of an error in one of the channel-encoded codewords, a modified first logical codeword is generated based on the one channel-encoded codeword and mapped to the number of layers of the MIMO s system for transmission to the receiver for further processing associated with the HARQ identifier. Other embodiments are disclosed.
    Type: Grant
    Filed: January 23, 2020
    Date of Patent: March 16, 2021
    Assignee: AT&T Intellectual Property I, L.P.
    Inventor: Sairamesh Nammi
  • Patent number: 10951282
    Abstract: Facilitating selection of demodulation reference signal port combinations in advanced networks (e.g., 4G, 5G, 6G, and beyond) is provided herein. Operations of a system can comprise evaluating a capability of a mobile device. The operations can also comprise assigning a first group of port combinations for the mobile device based on the capability of the mobile device being a first capability and a second group of port combinations for the mobile device based on the capability of the mobile device being a second capability, resulting in a port combination assignment. The port combination assignment can mitigate a peak-to-average power ratio value.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: March 16, 2021
    Assignee: AT&T Intellectual Property I, L.P.
    Inventor: SaiRamesh Nammi
  • Patent number: 10945281
    Abstract: Facilitating improved performance of multiple downlink control channels in advanced networks (e.g., 4G, 5G, 6G, and beyond) is provided herein. Operations of a system can comprise scheduling multiple data traffic channels for a user equipment device. Scheduling the multiple data channels can comprise scheduling a first data traffic channel of the multiple data traffic channels based on a legacy scheduling procedure and scheduling a second data traffic channel of the multiple data traffic channels based on an iterative procedure. The operations can also comprise transmitting, to the user equipment device, first information via multiple downlink control channels and transmitting, to the user equipment device, second information via the multiple data traffic channels.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: March 9, 2021
    Assignee: AT&T Intellectual Property I, L.P.
    Inventor: SaiRamesh Nammi
  • Publication number: 20210067395
    Abstract: Various embodiments disclosed herein provide for an improved system for selecting and conveying modulation scheme information for an uplink transmission. A network device can determine the channel state information for an uplink transmission based on sounding reference signals received from a user equipment device, and then select a modulation scheme for the uplink transmission based on the channel state information and associated signal to noise ratio. The network device can then send an indication of the selection to the user equipment device using an index number comprising six bits that correspond to an index number in a table of modulation schemes. The table of modulation schemes can include modulation schemes that use transform precoding, as well as modulation schemes that do not use transform precoding.
    Type: Application
    Filed: November 17, 2020
    Publication date: March 4, 2021
    Inventors: SaiRamesh Nammi, Arunabha Ghosh