# US 10,873,968 B2 · Method, apparatus and computer program product for transmission > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,873,968 B2 - Document ID: US10873968B2 - Status: Granted - Kind: B2 - Application number: 16/346,969 - Filed: 2016-11-14 - Published: 2020-02-27 - Granted: 2020-12-22 - Earliest claimed: 2016-11-14 - Assignees: Nokia Technologies Oy - Applicants: Nokia Technologies Oy - Inventors: Yuantao Zhang; Yan-Ji Zhang; Yi Zhang - Web page: https://patentgrep.com/patent/US10873968B2 ## CPC - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04W 74/08: Non-scheduled access, e.g. ALOHA (hybrid access H04W74/02) - H04L 5/0033: {each allocating device acting autonomously, i.e. without negotiation with other allocating devices} - H04L 69/324: in the data link layer [OSI layer 2], e.g. HDLC - H04W 72/0466: {the resource being a scrambling code} - H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT} - H04W 76/27: Transitions between radio resource control [RRC] states - H04W 88/02: Terminal devices - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract Method, apparatus and computer program product are disclosed for transmission in a wireless network. A method comprises: transmitting an uplink data block using grant free; detecting a downlink channel after a predefined timing or in a predefined time window; and determining whether the downlink channel being for a user equipment, wherein the uplink data block comprises information for identifying the user equipment identity, and a part of the user equipment identity is used to scramble a predefined part of the user equipment specific downlink channel. ## Claims ### Claim 1 A method comprising: transmitting an uplink data block using grant free transmission; detecting a downlink channel after a predefined timing or in a predefined time window; and determining whether the downlink channel is for a user equipment, wherein the uplink data block comprises information for identifying the user equipment identity, and a part of the user equipment identity is used to scramble a predefined part of the user equipment specific downlink channel, and wherein the part of the user equipment identity is least significant bits or most significant bits of the user equipment identity. ### Claim 2 An apparatus comprising: at least one processor; and at least one memory including computer program code, wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus to transmit an uplink data block using grant free transmission; detect a downlink channel after a predefined timing or in a predefined time window; and determine whether the downlink channel is for a user equipment, wherein the uplink data block comprises information for identifying the user equipment identity, and a part of the user equipment identity is used to scramble a predefined part of the user equipment specific downlink channel, and wherein the part of the user equipment identity is least significant bits or most significant bits of the user equipment identity. ### Claim 3 (depends on 2) The apparatus according to claim 2, wherein the downlink channel is a downlink control channel or a downlink data channel. ### Claim 4 (depends on 2) The apparatus according to claim 2, wherein the predefined part is the cyclic redundancy check of the downlink channel. ### Claim 5 (depends on 2) The apparatus according to claim 2, wherein the length of the user equipment identity is longer than the length of the cyclic redundancy check. ### Claim 6 (depends on 2) The apparatus according to claim 2, wherein the user equipment identity comprises a first part used to identify the user equipment and a second part used to identify a network element serving the user equipment, and the first part is used to scramble a predefined part of the user equipment specific downlink channel. ### Claim 7 (depends on 2) The apparatus according to claim 2, wherein the downlink channel is a downlink control channel, and the at least one memory and the computer program code are further configured to, with the at least one processor, cause the apparatus to: compare the part of the user equipment identity with the corresponding scrambling sequence used for the predefined part of the downlink control channel; in response to the part of the user equipment identity matching the corresponding scrambling sequence, obtain the rest part of the user equipment identity in the downlink control channel, or in a scheduled downlink data channel; and in response to the obtained user equipment identity combined by the part of the user equipment identity and the rest part of the user equipment identity matches the user equipment identity, determine the downlink control channel is for the user equipment. ### Claim 8 (depends on 2) The apparatus according to claim 2, wherein the downlink channel is a downlink data channel, and the rest of the user equipment identity is obtained from the downlink data channel. ### Claim 9 (depends on 2) The apparatus according to claim 2, wherein the downlink control channel comprises an indicator indicating the function of the downlink control channel. ### Claim 10 (depends on 9) The apparatus according to claim 9, wherein the indicator contains one bit, and the function of the downlink control channel is for detection response or for scheduling a downlink data channel. ### Claim 11 (depends on 10) The apparatus according to claim 10, wherein the function of the downlink control channel is for detection response and the rest part of the user equipment identity is obtained from the downlink control channel, or the function of the downlink control channel is for scheduling the downlink data channel and the rest part of the user equipment identity is obtained from the scheduled downlink data channel. ### Claim 12 An apparatus comprising: at least one processor; and at least one memory including computer program code, wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus to receive an uplink data block transmitted by a user equipment using grant free transmission, wherein the uplink data block comprises information for identifying the user equipment identity; recognize the user equipment based on the information; and transmit a downlink channel to the user equipment after a predefined timing or in a predefined time window, wherein a part of the user equipment identity is used to scramble a predefined part of the user equipment specific downlink channel, and wherein the part of the user equipment identity is least significant bits or most significant bits of the user equipment identity. ### Claim 13 (depends on 12) The apparatus according to claim 12, wherein the predefined part is the cyclic redundancy check of the downlink channel. ### Claim 14 (depends on 12) The apparatus according to claim 12, wherein the user equipment identity comprises a first part used to identify the user equipment and a second part used to a network element serving the user equipment, and the first part is used to scramble a predefined part of the user equipment specific downlink channel. ### Claim 15 (depends on 12) The apparatus according to claim 12, wherein the downlink channel is a downlink data channel, which contains information of the rest of the user equipment identity. ### Claim 16 (depends on 12) The apparatus according to claim 12, wherein the downlink channel is a downlink control channel, which comprises an indicator indicating the function of the downlink control channel. ### Claim 17 (depends on 16) The apparatus according to claim 16, wherein the indicator contains one bit, and the function of the downlink control channel is for detection response or for scheduling a downlink data channel. ### Claim 18 (depends on 17) The apparatus according to claim 17, wherein the function of the downlink control channel is for detection response and the downlink control channel contains information of the rest part of the user equipment identity, or the function of the downlink control channel is for scheduling the downlink data channel and the scheduled downlink data channel contains information of the rest part of the user equipment identity.