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EP-4738739-A2 - EFFICIENT MULTIPLEXING OF CONTROL INFORMATION IN TRANSPORT BLOCK

EP4738739A2EP 4738739 A2EP4738739 A2EP 4738739A2EP-4738739-A2

Abstract

The present disclosure relates to systems and methods for transmitting data over a wireless channel from a data transmitting node to a data receiving node in a communication system. In particular, the data transmitting node comprises second-layer processing circuitry for receiving, from a third layer, at least one second-layer service data unit, SDU, to be mapped onto a resource allocated for data transmission, and for generating a second-layer protocol data unit, PDU, including said at least one second-layer SDU and at least one second-layer control element, the at least one second-layer control element placed after any of the at least one second-layer SDU, and first-layer processing circuitry for receiving the second-layer PDU generated by the second-layer processing circuitry and mapping the second-layer PDU onto the resource allocated for data transmission. The data receiving node comprises first-layer processing circuitry for de-mapping at least one second-layer protocol data unit, PDU, from a resource allocated for data reception, and a second layer processing circuitry for receiving and parsing the second-layer PDU de-mapped by the first-layer processing circuitry, the second-layer PDU including at least one second-layer service data unit, SDU, and at least one second-layer control element, the at least one second-layer control element following any of the at least one second-layer SDU.

Inventors

  • LOEHR, JOACHIM
  • BASU MALLICK, PRATEEK
  • SHAH, Rikin
  • SUZUKI, HIDETOSHI
  • HORI, TAKAKO

Assignees

  • Panasonic Intellectual Property Corporation of America

Dates

Publication Date
20260506
Application Date
20170831

Claims (7)

  1. An integrated circuit for controlling a data transmitting node (3100t) for transmitting data over a wireless channel (3190) to a data receiving node (3100r) in a 3GPP communication system (3100), the integrated circuit comprising: second-layer processing circuitry (3120t), which, in operation, receives, from a third layer (3130t), at least one second-layer service data unit, SDU (243a), to be mapped onto a resource allocated for data transmission, and for generating a second-layer protocol data unit, PDU (2400), including said at least one second-layer SDU (243a) and at least one second-layer control element, CE, (244a), the at least one second-layer CE (244a) placed after any of the at least one second-layer SDU (243a), first-layer processing circuitry (3110t), which, in operation, receives the second-layer PDU (2400) generated by the second-layer processing circuitry (3120t) and maps the second-layer PDU (2400) onto the resource allocated for data transmission, wherein the second-layer PDU (2400) includes at least one second layer SDU (243a) and at least one second layer CE (244a), in a first-type second-layer PDU, the at least one second-layer CE is placed after any of the at least one second-layer SDU (243a); in a second-type second-layer PDU, the at least one second-layer CE precedes any of the at least one second-layer SDU, the second-layer processing circuitry (3120t) is configurable to generate, dependent on the type of second-layer CE (244a) to be included in the second-layer PDU, either a first-type second-layer PDU (2400) or a second-type second-layer PDU as the second-layer PDU, the second-layer CE is a Medium Access Control, MAC, CE, a first type of second layer CE to be included in the first-type second-layer PDU includes a power headroom report, a cell radio network temporary identifier, C-RNTI, MAC CE, or a buffer status report, BSR different from a padding BSR, and a second type of second-layer CE to be included in the second-type second-layer PDU includes an activation/deactivation MAC CE contention resolution MAC CE.
  2. The integrated circuit according to claim 1, wherein the second-layer PDU further includes a respective second-layer subheader (241a) associated with each of the at least one second-layer SDU (243a), and a respective second-layer subheader (242a) associated with each of the at least one second-layer CE (244a).
  3. The integrated circuit according to claim 2, wherein the at least one second-layer SDU (243a) is placed after the respective associated subheader (241a) and the at least one second-layer CE (244a) is placed before the respective associated subheader (242a).
  4. The integrated circuit according to claim 3, wherein either the first or each second-layer subheader (241a) includes a presence indicator indicating whether the second-layer PDU (2400) includes at least one second-layer CE (244a).
  5. The integrated circuit according to claim 2, wherein each second-layer subheader (242a) associated with any of the at least one second-layer CE (244a) precedes each second-layer SDU (243a) and the respective subheader (241a) associated with each second-layer SDU (243a).
  6. The integrated circuit according to any one of claims 1 to 5, wherein the second-layer PDU (2400) includes a padding buffer status report, BSR, and a second-layer subheader associated with the padding BSR, the padding BSR and the second-layer subheader associated with the padding BSR are placed after any of the at least one second-layer SDU (243a).
  7. The integrated circuit according to any of claims 1 to 6, wherein the second-layer processing circuitry (3120t) is configured to start forwarding packages constituting parts of the second-layer PDU (2400) to the first-layer processing circuitry before the generation of the second-layer the second-layer PDU (2400) is completed.

Description

[Technical Field] The present disclosure relates to transmission and reception processing on multiple layers in a communication system as well as to the corresponding transmission apparatuses, methods and programs. [Background] Third-generation mobile systems (3G) based on WCDMA radio-access technology are being deployed on a broad scale all around the world. A first step in enhancing or evolving this technology entails introducing High-Speed Downlink Packet Access (HSDPA) and an enhanced uplink, also referred to as High Speed Uplink Packet Access (HSUPA), giving a radio-access technology that is highly competitive. In order to be prepared for further increasing user demands and to be competitive against new radio access technologies, 3GPP introduced a new mobile communication system called Long Term Evolution (LTE). LTE is designed to meet the carrier needs for high speed data and media transport as well as high capacity voice support through to the next decade. The ability to provide high bit rates is a key measure for LTE. The work item (WI) specification on Long-Term Evolution (LTE) called Evolved UMTS Terrestrial Radio Access (UTRA) and UMTS Terrestrial Radio Access Network (UTRAN) is finalized as Release 8 (Rel. 8 LTE). The LTE system represents efficient packet based radio access and radio access networks that provide full IP-based functionalities with low latency and low cost. In LTE, scalable multiple transmission bandwidths are specified such as 1.4, 3.0, 5.0, 10.0, 15.0, and 20.0 MHz, in order to achieve flexible system deployment using a given spectrum. In the downlink, Orthogonal Frequency Division Multiplexing (OFDM) based radio access was adopted because of its inherent immunity to multipath interference (MPI) due to a low symbol rate, the use of a cyclic prefix (CP), and its affinity to different transmission bandwidth arrangements. Single-carrier frequency division multiple access (SC-FDMA) based radio access was adopted in the uplink, since the provision of wide area coverage was prioritized over improvement in the peak data rate considering the restricted transmission power of the user equipment (UE). Many key packet radio access techniques are employed including multiple-input multiple-output (MIMO) channel transmission techniques, and a highly efficient control signaling structure is achieved in Rel. 8 LTE. LTE architecture The overall architecture is shown in Figure 1 and a more detailed representation of the E-UTRAN architecture is given in Figure 2. The E-UTRAN consists of eNBs, providing the E-UTRA user plane (PDCP/RLC/MAC/PHY) and control plane (RRC) protocol terminations towards the UE. The eNB hosts the Physical (PHY), Medium Access Control (MAC), Radio Link Control (RLC), and Packet data Control Protocol (PDCP) layers that include the functionality of user-plane header-compression and encryption. It also offers Radio Resource Control (RRC) functionality corresponding to the control plane. It performs many functions including radio resource management, admission control, scheduling, enforcement of negotiated UL QoS, cell information broadcast, ciphering/deciphering of user and control plane data, and compression/decompression of DL/UL user plane packet headers. The eNBs are interconnected with each other by means of the X2 interface. The eNBs are also connected by means of the S1 interface to the EPC (Evolved Packet Core), more specifically to the MME (Mobility Management Entity) by means of the S1-MME and to the Serving Gateway (S-GW) by means of the S1-U. The S1 interface supports a many-to-many relation between MMEs /Serving Gateways and eNBs. The SGW routes and forwards user data packets, while also acting as the mobility anchor for the user plane during inter-eNB handovers and as the anchor for mobility between LTE and other 3GPP technologies (terminating S4 interface and relaying the traffic between 2G/3G systems and PDN GW). For idle state UEs, the SGW terminates the DL data path and triggers paging when DL data arrives for the UE. It manages and stores UE contexts, e.g. parameters of the IP bearer service, network internal routing information. It also performs replication of the user traffic in case of lawful interception. The MME is the key control-node for the LTE access-network. It is responsible for idle mode UE tracking and paging procedures including retransmissions. It is involved in the bearer activation/deactivation process and is also responsible for choosing the SGW for a UE at the initial attach and at time of intra-LTE handover involving Core Network (CN) node relocation. It is also responsible for authenticating the user (by interacting with the HSS). The Non-Access Stratum (NAS) signaling terminates at the MME and it is also responsible for generation and allocation of temporary identities to UEs. It checks the authorization of the UE to camp on the service provider's Public Land Mobile Network (PLMN) and enforces UE roaming restrictions. The MME is the ter